JPH0655833B2 - Method for improving powder properties of synthetic resin powder - Google Patents
Method for improving powder properties of synthetic resin powderInfo
- Publication number
- JPH0655833B2 JPH0655833B2 JP63089884A JP8988488A JPH0655833B2 JP H0655833 B2 JPH0655833 B2 JP H0655833B2 JP 63089884 A JP63089884 A JP 63089884A JP 8988488 A JP8988488 A JP 8988488A JP H0655833 B2 JPH0655833 B2 JP H0655833B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- powder
- synthetic resin
- resin powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000843 powder Substances 0.000 title claims description 62
- 229920003002 synthetic resin Polymers 0.000 title claims description 33
- 239000000057 synthetic resin Substances 0.000 title claims description 33
- 238000000034 method Methods 0.000 title description 14
- 229920001577 copolymer Polymers 0.000 claims description 21
- 239000004816 latex Substances 0.000 claims description 17
- 229920000126 latex Polymers 0.000 claims description 17
- 229920001971 elastomer Polymers 0.000 claims description 13
- 239000000314 lubricant Substances 0.000 claims description 11
- 229920000642 polymer Polymers 0.000 claims description 7
- 229920000578 graft copolymer Polymers 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 18
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 14
- 239000000178 monomer Substances 0.000 description 12
- -1 alkyl methacrylate Chemical compound 0.000 description 11
- 230000005484 gravity Effects 0.000 description 11
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 8
- 239000006185 dispersion Substances 0.000 description 8
- 230000018044 dehydration Effects 0.000 description 7
- 238000006297 dehydration reaction Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 6
- 239000000839 emulsion Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 229920002554 vinyl polymer Polymers 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 235000014113 dietary fatty acids Nutrition 0.000 description 5
- 239000000194 fatty acid Substances 0.000 description 5
- 229930195729 fatty acid Natural products 0.000 description 5
- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000003431 cross linking reagent Substances 0.000 description 4
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Chemical compound CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 3
- OCKWAZCWKSMKNC-UHFFFAOYSA-N [3-octadecanoyloxy-2,2-bis(octadecanoyloxymethyl)propyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(COC(=O)CCCCCCCCCCCCCCCCC)(COC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC OCKWAZCWKSMKNC-UHFFFAOYSA-N 0.000 description 3
- 125000005250 alkyl acrylate group Chemical group 0.000 description 3
- 239000004359 castor oil Substances 0.000 description 3
- 235000019438 castor oil Nutrition 0.000 description 3
- 230000001112 coagulating effect Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 238000007334 copolymerization reaction Methods 0.000 description 3
- 238000007720 emulsion polymerization reaction Methods 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 239000001587 sorbitan monostearate Substances 0.000 description 3
- 235000011076 sorbitan monostearate Nutrition 0.000 description 3
- 229940035048 sorbitan monostearate Drugs 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 description 2
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 2
- INLLPKCGLOXCIV-UHFFFAOYSA-N bromoethene Chemical compound BrC=C INLLPKCGLOXCIV-UHFFFAOYSA-N 0.000 description 2
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 239000008116 calcium stearate Substances 0.000 description 2
- 235000013539 calcium stearate Nutrition 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 2
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 description 2
- UKMSUNONTOPOIO-UHFFFAOYSA-N docosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCC(O)=O UKMSUNONTOPOIO-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 2
- 235000003891 ferrous sulphate Nutrition 0.000 description 2
- 239000011790 ferrous sulphate Substances 0.000 description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- 229940065472 octyl acrylate Drugs 0.000 description 2
- ANISOHQJBAQUQP-UHFFFAOYSA-N octyl prop-2-enoate Chemical compound CCCCCCCCOC(=O)C=C ANISOHQJBAQUQP-UHFFFAOYSA-N 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical compound [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- QMMJWQMCMRUYTG-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl QMMJWQMCMRUYTG-UHFFFAOYSA-N 0.000 description 1
- RZRNAYUHWVFMIP-KTKRTIGZSA-N 1-oleoylglycerol Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(O)CO RZRNAYUHWVFMIP-KTKRTIGZSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 235000021357 Behenic acid Nutrition 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- VCUFZILGIRCDQQ-KRWDZBQOSA-N N-[[(5S)-2-oxo-3-(2-oxo-3H-1,3-benzoxazol-6-yl)-1,3-oxazolidin-5-yl]methyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C1O[C@H](CN1C1=CC2=C(NC(O2)=O)C=C1)CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F VCUFZILGIRCDQQ-KRWDZBQOSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- TXQVDVNAKHFQPP-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(CO)(CO)CO TXQVDVNAKHFQPP-UHFFFAOYSA-N 0.000 description 1
- 229910001508 alkali metal halide Inorganic materials 0.000 description 1
- 150000008045 alkali metal halides Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229940116226 behenic acid Drugs 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- SPTHWAJJMLCAQF-UHFFFAOYSA-M ctk4f8481 Chemical compound [O-]O.CC(C)C1=CC=CC=C1C(C)C SPTHWAJJMLCAQF-UHFFFAOYSA-M 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- RZRNAYUHWVFMIP-UHFFFAOYSA-N monoelaidin Natural products CCCCCCCCC=CCCCCCCCC(=O)OCC(O)CO RZRNAYUHWVFMIP-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- FTQWRYSLUYAIRQ-UHFFFAOYSA-N n-[(octadecanoylamino)methyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCNC(=O)CCCCCCCCCCCCCCCCC FTQWRYSLUYAIRQ-UHFFFAOYSA-N 0.000 description 1
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229950011392 sorbitan stearate Drugs 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 229910000404 tripotassium phosphate Inorganic materials 0.000 description 1
- 235000019798 tripotassium phosphate Nutrition 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Processes Of Treating Macromolecular Substances (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は合成樹脂粉末の粉体特性の改良方法に関する。
さらに詳しくは、本発明はゴムを幹ポリマとするグラフ
ト共重合体ラテックスを凝固し、滑剤を添加し、優れた
粉体特性を有する合成樹脂粉末をうるための合成樹脂粉
末の粉体特性の改良方法に関する。The present invention relates to a method for improving powder characteristics of synthetic resin powder.
More specifically, the present invention is to improve the powder properties of synthetic resin powder for obtaining a synthetic resin powder having excellent powder properties by coagulating a graft copolymer latex having rubber as a trunk polymer and adding a lubricant. Regarding the method.
従来より合成樹脂粉末の粉体特性を改良する方法は種々
検討されている。たとえば、共重合体ラテックスを気相
凝固する方法（特開昭57−59929号公報参照）、直接噴
霧乾燥する方法や特定の溶媒に球形分散した後凝固する
方法などが知られている。Various methods for improving the powder characteristics of synthetic resin powders have been studied. For example, a method of vapor-phase coagulation of the copolymer latex (see JP-A-57-59929), a method of directly spray-drying, a method of spherically dispersing in a specific solvent and then coagulating are known.
しかしながら、前記のような従来から知られている方法
では、粉体特性を改良する効果が不充分であり、近年の
粉末の自動計量および輸送方式の大型化に対応すること
がきる流動性や耐ブロッキング性を有する粉末がえられ
ないので、従来から知られている方法が充分満足されて
いるとはいえない。However, the conventionally known methods as described above are insufficient in the effect of improving the powder characteristics, and the fluidity and the resistance that can cope with the recent increase in the size of powder automatic metering and transportation systems. Since a powder having a blocking property cannot be obtained, it cannot be said that the conventionally known methods are sufficiently satisfied.
そこで本発明者らは、合成樹脂粉末の粉体特性の改良が
粉末の自動計量および輸送方式の大型化に不可欠である
と考え、鋭意研究を重ねた結果、本発明を完成するに至
った。Therefore, the present inventors considered that the improvement of the powder characteristics of the synthetic resin powder was indispensable for increasing the size of the automatic powder weighing and transportation method, and as a result of earnest research, the present invention was completed.
〔課題を解決するための手段〕 すなわち、本発明は、ゴムを幹ポリマーとするグラフト
共重合体ラテックスを凝固し、該共重合体100重量部に
対して滑剤0.01〜10重量部を添加することを特徴とする
合成樹脂粉末の粉体特性の改良方法に関する。[Means for Solving the Problems] That is, the present invention is to solidify a graft copolymer latex having a rubber as a trunk polymer, and add 0.01 to 10 parts by weight of a lubricant to 100 parts by weight of the copolymer. And a method for improving powder characteristics of synthetic resin powder.
本発明に用いられるグラフト共重合体ラテックスは、幹
ポリマーとなるゴムをまず通常の乳化重合で製造し、つ
ぎにえられた共重合体ラテックスに該共重合体ラテック
スと共重合しうる単量体を通常の乳化重合でグラフト共
重合させることによってえられる。The graft copolymer latex used in the present invention is a monomer that can be copolymerized with the copolymer latex by first producing a rubber to be a trunk polymer by ordinary emulsion polymerization, and then producing the copolymer latex. Can be obtained by graft copolymerization by ordinary emulsion polymerization.
幹ポリマーとして用いられるゴムを形成する単量体とし
ては、たとえばブタジエン、イソプレン、クロロプレン
などのジエン系単量体および／またはブチルアクリレー
ト、オクチルアクリレートなどのアクリル酸アルキルエ
ステル系単量体が用いられる。なお、前記アクリル酸ア
ルキルエステル系単量体の炭素数は４〜11、なかんづく
５〜７であることが好ましい。さらに前記単量体を共重
合可能な単量体と共重合させてもよい。かかる共重合可
能な単量体としては、たとえば、メチルメタクリレー
ト、エチルメタクリレートなどのアルキルメタクリレー
ト、アクリロニトリル、メタアクリロニトリルなどのビ
ニルシアン、スチレン、α−メチルスチレンなどの芳香
族ビニル、塩化ビニル、臭化ビニルなどのハロゲン化ビ
ニルなどがあげられる。さらに架橋剤としてジビニルベ
ンゼン、モノエチレングリコールジメタクリレート、ポ
リエチレングリコールジメタクリレートなどを用いるこ
とができるが、本発明はかかる具体例のみに限定される
ものではない。As the monomer forming the rubber used as the trunk polymer, for example, a diene-based monomer such as butadiene, isoprene or chloroprene and / or an alkyl acrylate-based monomer such as butyl acrylate or octyl acrylate is used. The alkyl acrylate monomer preferably has 4 to 11 carbon atoms, especially 5 to 7 carbon atoms. Further, the monomer may be copolymerized with a copolymerizable monomer. Such copolymerizable monomers include, for example, alkyl methacrylate such as methyl methacrylate and ethyl methacrylate, vinyl cyan such as acrylonitrile and methacrylonitrile, styrene, aromatic vinyl such as α-methylstyrene, vinyl chloride and vinyl bromide. Such as vinyl halide. Further, divinylbenzene, monoethylene glycol dimethacrylate, polyethylene glycol dimethacrylate, etc. can be used as the crosslinking agent, but the present invention is not limited to such specific examples.
とくに好ましいゴムは、全量100重量部に対してブタジ
エン20〜80重量部、スチレン０〜50重量部、ブタジエン
またはスチレンと共重合可能な単量体０〜20重量部およ
び架橋剤０〜５重量部を乳化重合することによりえられ
る。Particularly preferred rubber is 20 to 80 parts by weight of butadiene, 0 to 50 parts by weight of styrene, 0 to 20 parts by weight of a monomer copolymerizable with butadiene or styrene, and 0 to 5 parts by weight of a crosslinking agent, based on 100 parts by weight of the total amount. Can be obtained by emulsion polymerization.
つぎに、前記ゴムを幹ポリマーとグラフト共重合させて
共重合体をうるときに用いられる単量体としては、前記
ゴムと共重合可能なメチルアクリレート、エチルアクリ
レート、ブチルアクリレート、オクチルアクリレートな
どのアルキルアクリレート；メチルメタクリレート、エ
チルメタクリレートなどのアルキルメタクリレート；ア
クリロニトリル、メタアクリロニトリルなどのビニルシ
アン；スチレン、α−メチルスチレンなどの芳香族ビニ
ル；塩化ビニル、臭化ビニルなどのハロゲン化ビニルな
どを前記ゴムに添加してもよく、さらに架橋剤としてジ
ビニルベンゼン、モノエチレングリコールジメタクリレ
ート、ポリエチレングリコールジメタクリレートなどを
用いることができるが、本発明はかかる具体例のみに限
定されるものではない。Next, as a monomer used when a copolymer is obtained by graft-copolymerizing the rubber with a trunk polymer, alkyl acrylates such as methyl acrylate, ethyl acrylate, butyl acrylate, and octyl acrylate that are copolymerizable with the rubber are used. Acrylate; alkyl methacrylate such as methyl methacrylate and ethyl methacrylate; vinyl cyan such as acrylonitrile and methacrylonitrile; aromatic vinyl such as styrene and α-methylstyrene; vinyl halide such as vinyl chloride and vinyl bromide. Further, divinylbenzene, monoethylene glycol dimethacrylate, polyethylene glycol dimethacrylate, etc. can be used as the crosslinking agent, but the present invention is not limited to such specific examples. There.
前記グラフト共重合によってえられた共重合体の組成
は、共重合体全量100重量部に対してゴム５〜80重量
部、好ましくは20〜60重量部およびグラフト成分20〜95
重量部、好ましくは40〜80重量部からなる。グラフト部
における単量体の比率はグラフト部の全量100重量部に
対してメチレンメタクリレート30〜70重量部、スチレン
30〜70重量部、その他の共重合可能な単量体０〜20重量
部および架橋剤０〜５重量部であるのが好ましい。The composition of the copolymer obtained by the graft copolymerization is 5 to 80 parts by weight of rubber, preferably 20 to 60 parts by weight and 20 to 95 parts of the graft component per 100 parts by weight of the total amount of the copolymer.
Parts by weight, preferably 40-80 parts by weight. The ratio of the monomers in the graft part is 30 to 70 parts by weight of methylene methacrylate and styrene based on 100 parts by weight of the total amount of the graft part.
It is preferably 30 to 70 parts by weight, 0 to 20 parts by weight of other copolymerizable monomers, and 0 to 5 parts by weight of a crosslinking agent.
本発明に用いられる滑剤としては、ステアリン酸、ベヘ
ニン酸などの脂肪酸；ステアリン酸亜鉛、ステアリン酸
カルシウムなどの脂肪酸金属塩；オレイン酸アミド、エ
ルカ酸アミド、エチレンビスアミドなどの脂肪酸アミ
ド；ブチルステアレート、ステアリルステアレート、ソ
ルビタンモノステアレートなどのソルビタンステアリン
酸エステル、ペンタエリトリトールテトラステアレート
などのペンタエリトリトールステアリン酸エステル、オ
レイン酸モノグリセリドなどのグリセリン脂肪酸エステ
ル；硬化ヒマシ油などの脂肪酸エステル；ステアリルア
ルコールなどの高級アルコールなどがあげられるが、本
発明はかかる具体例のみに限定されるものではない。な
お、本発明においては、前記滑剤は単独で用いてもよ
く、また２種以上を混合して用いてもよい。Lubricants used in the present invention include fatty acids such as stearic acid and behenic acid; fatty acid metal salts such as zinc stearate and calcium stearate; fatty acid amides such as oleic acid amide, erucic acid amide and ethylene bisamide; butyl stearate, stearyl. Stearate, sorbitan stearate such as sorbitan monostearate, pentaerythritol stearate such as pentaerythritol tetrastearate, glycerin fatty acid ester such as oleic acid monoglyceride; fatty acid ester such as hydrogenated castor oil; higher alcohol such as stearyl alcohol However, the present invention is not limited to such specific examples. In addition, in the present invention, the lubricant may be used alone or in combination of two or more kinds.
前記滑剤は、ゴムを幹ポリマーとするグラフト共重合体
ラテックスを凝固し、該共重合体100重量部に対して0.0
1〜10重量部、好ましくは0.1〜３重量部添加される。滑
剤の添加量が0.01重量部未満のばあい、粉体特性の改良
効果が小さく、10重量部をこえるばあい、その合成樹脂
本来の物性が低下する。The lubricant coagulates a graft copolymer latex having rubber as a trunk polymer, and is 0.0 to 100 parts by weight of the copolymer.
1 to 10 parts by weight, preferably 0.1 to 3 parts by weight is added. When the amount of the lubricant added is less than 0.01 parts by weight, the effect of improving the powder properties is small, and when it exceeds 10 parts by weight, the original physical properties of the synthetic resin deteriorate.
本発明においてグラフト共重合によってえられた共重合
体を凝固する際の凝固剤としては硫塩、塩酸、リン酸、
硝酸などの無機酸類、酢酸などの有機酸類あるいはナト
リウム、カリウムなどのいわゆるアルカリ金属のハロゲ
ン化物、無機酸とのアルカリ金属塩、有機酸とのアルカ
リ金属塩などが用いられる。これらは単独で用いてもよ
く、また２種以上を併用してもよい。前記のような凝固
剤0.05〜10重量部、好ましくは0.1〜５重量部を共重合
体ラテックス100重量部に添加し、凝固し、えられた凝
固された共重合体に前記滑剤をそのまままたは滑剤の乳
化分散液もしくは溶液を添加する。In the present invention, as a coagulant for coagulating the copolymer obtained by graft copolymerization, sulphate, hydrochloric acid, phosphoric acid,
Inorganic acids such as nitric acid, organic acids such as acetic acid, so-called alkali metal halides such as sodium and potassium, alkali metal salts with inorganic acids, alkali metal salts with organic acids and the like are used. These may be used alone or in combination of two or more. 0.05 to 10 parts by weight, preferably 0.1 to 5 parts by weight, of the coagulant as described above is added to 100 parts by weight of the copolymer latex and coagulated, and the obtained coagulated copolymer is provided with the lubricant as it is or as a lubricant. Add the emulsion dispersion or solution of.
前記滑剤または滑剤の乳化液の添加は凝固後、熱処理
後、脱水後または乾燥後のいずれのときに行なってもよ
いが、凝固後のスラリーに添加するのが最も効果がある
ので好ましい。The addition of the lubricant or the emulsion of the lubricant may be carried out at any time after coagulation, heat treatment, dehydration or drying, but it is preferable to add it to the slurry after coagulation since it is most effective.
前記共重合体のスラリーは、蒸気または電熱器などによ
ってたとえば50〜100℃、10分〜１時間の条件で熱処理
し、さらに真空脱水機、遠心脱水機、プレス脱水機など
によって脱水を行ない、箱型流動乾燥機、真空乾燥機な
どを用いてたとえば50〜60℃で、20時間程度乾燥するこ
とによって、粉体特性が改良された合成樹脂がえられ
る。The slurry of the copolymer is heat-treated with steam or an electric heater under the conditions of, for example, 50 to 100 ° C. for 10 minutes to 1 hour, and further dehydrated by a vacuum dehydrator, a centrifugal dehydrator, a press dehydrator, or the like. A synthetic resin with improved powder characteristics can be obtained by drying at 50 to 60 ° C. for about 20 hours using a mold fluidized dryer, a vacuum dryer, or the like.
つぎに本発明の合成樹脂粉末の粉体特性の改良方法を実
施例にもとづいてさらに詳細に説明するが、本発明はか
かる実施例のみに限定されるものではない。Next, the method for improving the powder characteristics of the synthetic resin powder of the present invention will be described in more detail based on examples, but the present invention is not limited to these examples.
実施例１ 水200重量部、オレイン酸ソーダ1.5重量部、硫酸第一鉄
0.002重量部、エチレンジアミン四酢酸二ナトリウム0.0
05重量部、リン酸三カリウム0.2重量部、ホルムアルデ
ヒドスルフォキシル酸ソーダ0.2重量部、ブタジエン75
重量部、スチレン25重量部、ジビニルベンゼン1.0重量
部およびジイソプロピルベンゼンハイドロパーオキサイ
ド0.1重量部を内容積５の攪拌機付き重合容器に仕込
み、反応温度50℃で５時間重合させた。えられたゴムの
重合転化率は98％であった。つぎにえられたゴム180重
量部（固形分60重量部）、水90重量部、硫酸第一鉄0.00
2重量部、エチレンジアミン四酢酸二ナトリウム0.004重
量部、ホムアルデヒドスルフォキシル酸ソーダ0.1重量
部、スチレン20重量部およびメチルメタクリレート20重
量部を内容積５の攪拌機付き重合容器に仕込み、反応
温度60℃で３時間重合させた。えられたゴムの共重合体
の転化率は99％であった。Example 1 200 parts by weight of water, 1.5 parts by weight of sodium oleate, ferrous sulfate
0.002 parts by weight, disodium ethylenediaminetetraacetate 0.0
05 parts by weight, tripotassium phosphate 0.2 parts by weight, formaldehyde sodium sulfoxylate 0.2 parts by weight, butadiene 75
Parts by weight, 25 parts by weight of styrene, 1.0 part by weight of divinylbenzene and 0.1 part by weight of diisopropylbenzene hydroperoxide were placed in a polymerization vessel having an inner volume of 5 and equipped with a stirrer, and polymerized at a reaction temperature of 50 ° C. for 5 hours. The polymerization conversion of the obtained rubber was 98%. 180 parts by weight of rubber (60 parts by weight of solids), 90 parts by weight of water, 0.001 of ferrous sulfate
2 parts by weight, 0.004 parts by weight of disodium ethylenediamine tetraacetate, 0.1 parts by weight of sodium formaldehyde sulfoxylate, 20 parts by weight of styrene and 20 parts by weight of methyl methacrylate were charged into a polymerization vessel with an internal volume of 5 and equipped with a stirrer, and the reaction temperature was 60 ° C. It was polymerized for 3 hours. The conversion rate of the obtained rubber copolymer was 99%.
えられた共重合体ラテックス３（グラフト共重合体：
100重量部）に10％（重量％、以下同様）塩酸300mlを加
えて凝固させた後、10％エチレンビスアミドの乳化分散
液100mlを添加し、電熱器によって70℃で10分間熱処理
し、さらにヌッチェによって脱水した後、箱型乾燥機を
用いて60℃、20時間乾燥させ、粉体特性が改良された合
成樹脂粉末をえた。えられた合成樹脂粉末の粉体特性と
して、かさ比重、流動性指数、崩壊性および剪断荷重を
下記の方法にしたがって測定した。その結果を第１表に
示した。The obtained copolymer latex 3 (graft copolymer:
To 100 parts by weight, 300 ml of 10% hydrochloric acid (same as below) is added to solidify, then 100 ml of an emulsion dispersion of 10% ethylenebisamide is added, and the mixture is heat treated at 70 ° C for 10 minutes with an electric heater. After dehydration by, it was dried at 60 ° C. for 20 hours using a box dryer to obtain a synthetic resin powder with improved powder characteristics. As powder characteristics of the obtained synthetic resin powder, bulk specific gravity, fluidity index, disintegration property and shear load were measured according to the following methods. The results are shown in Table 1.
（かさ比重） えられた合成樹脂粉末のかさ比重（単位：ｇ／ml）をJI
S Ｋ 6721に基づいて測定した。(Bulk Specific Gravity) JI is the bulk specific gravity (unit: g / ml) of the obtained synthetic resin powder.
It was measured according to SK 6721.
（流動性指数） 「ケミカル・エンジニアリング」（Chemical Engineer
ing）、1965年１月18日発行、163〜168頁の記載の方法
により安息角、圧縮度、スパチェラ角および均一度（ま
たは凝集度）の４つの測定値をえられた合成樹脂粉末に
ついて求め、それらの値より換算表にしたがって点数を
つけ、これらの点数の和で表わされる指数によって評価
する。なお、測定値が大きいものほど流動性がよい。(Liquidity Index) “Chemical Engineering” (Chemical Engineer
ing), issued on January 18, 1965, pp.163-168, the four angles of repose, compression, spatula angle and homogeneity (or cohesion) were obtained for the obtained synthetic resin powder. Scores are assigned from these values according to a conversion table, and evaluation is performed using an index represented by the sum of these scores. The larger the measured value, the better the fluidity.
（崩壊性） えられた合成樹脂粉末に一定の荷重（５kg／cm2）をか
けてブロック（形状：円柱状、寸法：５cmφ／３cm）を
製造し、該ブロックに一定の振動（振動数：60Hz）を10
0秒間与えて崩壊させ、崩壊された粉末のうち18メッシ
ュパスの粉末の重量をもとのブロックの全重量に対する
百分率で表わした。その百分率の数値を崩壊性（単位：
％）といい、数値が大きいものほどブロッキングしにく
いことを示す。(Disintegration) A certain load (5 kg / cm 2 ) is applied to the obtained synthetic resin powder to produce a block (shape: columnar, size: 5 cmφ / 3 cm), and a constant vibration (frequency: 60Hz) 10
The powder was allowed to disintegrate for 0 seconds, and the weight of the powder of the disintegrated powder of 18 mesh pass was expressed as a percentage of the total weight of the original block. The percentage value is the collapsibility (unit:
%), Indicating that the larger the number, the more difficult the blocking is.
（剪断荷重） パウダーベッドテスター（三協電業（株）製、PTO型）
に合成樹脂粉末を充填し一定荷重（20kg／cm2）をか
け、一面剪断試験を行なった。そのときの最大剪断荷重
（単位：kg）を樹脂のブロッキング指標として表わし
た。すなわち、数値が大きいほどブロッキングしやすい
ことを示す。(Shear load) Powder bed tester (PTO type manufactured by Sankyo Denki Co., Ltd.)
A synthetic resin powder was filled in and a constant load (20 kg / cm 2 ) was applied, and a one-sided shear test was performed. The maximum shear load (unit: kg) at that time was expressed as a blocking index of the resin. That is, the larger the value, the easier the blocking.
実施例２ 実施例１でえられた共重合体ラテックス３に10％塩酸
300mlを加えて凝固させた後、10％ソルビタンモノステ
アレートの乳化分散液100mlを添加し、実施例１と同じ
熱処理、脱水および乾燥を行なって粉末特性が改良され
た合成樹脂粉末をえた。えられた合成樹脂粉末の粉体特
性としてかさ比重、流動性指数、崩壊性および剪断荷重
を実施例１と同様にして測定した。その結果を第１表に
示す。Example 2 10% hydrochloric acid was added to the copolymer latex 3 obtained in Example 1.
After adding 300 ml to solidify, 100 ml of 10% sorbitan monostearate emulsified dispersion was added, and the same heat treatment, dehydration and drying as in Example 1 were carried out to obtain a synthetic resin powder having improved powder characteristics. As the powder characteristics of the obtained synthetic resin powder, bulk specific gravity, fluidity index, disintegration property and shear load were measured in the same manner as in Example 1. The results are shown in Table 1.
実施例３ 実施例１でえられた共重合体ラテックス３に10％塩酸
300mlを加えて凝固させた後、10％硬化ヒマシ油の乳化
分散液100mlを添加し、えられた合成樹脂粉末の粉体特
性としてかさ比重、流動性指数、崩壊性および剪断荷重
を実施例１と同様に測定した。その結果を第１表に示
す。Example 3 10% hydrochloric acid was added to the copolymer latex 3 obtained in Example 1.
After adding 300 ml to solidify, 100 ml of an emulsion dispersion of 10% hydrogenated castor oil was added, and the bulk specific gravity, fluidity index, disintegration property and shear load were determined as powder properties of the obtained synthetic resin powder. It measured similarly to. The results are shown in Table 1.
実施例４ 実施例１でえられた共重合体ラテックス３に10％塩酸
300mlを加えて凝固させた後、10％ペンタエリトリトー
ルテトラステアレートの乳化分散液100mlを添加し、実
施例１と同じ濾過、熱処理、脱水および乾燥を行なって
粉体特性が改良された合成樹脂粉末をえた。えられた合
成樹脂粉末の粉体特性としてかさ比重、流動性指数、崩
壊性および剪断荷重を実施例１と同様にして測定した。
その結果を第１表に示す。Example 4 10% hydrochloric acid was added to the copolymer latex 3 obtained in Example 1.
After adding 300 ml to solidify, 100 ml of 10% pentaerythritol tetrastearate emulsified dispersion was added, and the same filtration, heat treatment, dehydration and drying as in Example 1 were carried out to improve the powder properties of the synthetic resin powder. I got it. As the powder characteristics of the obtained synthetic resin powder, bulk specific gravity, fluidity index, disintegration property and shear load were measured in the same manner as in Example 1.
The results are shown in Table 1.
実施例５ 実施例１でえられた共重合体ラテックス３に10％塩酸
300mlを加えて凝固させた後、25％ソルビタンモノステ
アレートの乳化分散液400mlを添加し、実施例１と同じ
濾過、熱処理、脱水および乾燥を行なって粉体特性が改
良された合成樹脂粉末をえた。えられた合成樹脂粉末の
粉体特性としてかさ比重、流動性指数、崩壊性および剪
断荷重を実施例１と同様にして測定した。その結果を第
１表に示す。Example 5 10% hydrochloric acid was added to the copolymer latex 3 obtained in Example 1.
After 300 ml was added and solidified, 400 ml of 25% sorbitan monostearate emulsified dispersion was added, and the same filtration, heat treatment, dehydration and drying as in Example 1 were carried out to obtain a synthetic resin powder having improved powder characteristics. I got it. As the powder characteristics of the obtained synthetic resin powder, bulk specific gravity, fluidity index, disintegration property and shear load were measured in the same manner as in Example 1. The results are shown in Table 1.
比較例１ 実施例１でえられた共重合体ラテックス３に10％塩酸
300mlを加えて凝固させた後、何も添加せずに実施例１
と同じ濾過、熱処理、脱水および乾燥を行なって合成樹
脂粉末をえた。えられた合成樹脂粉末の粉体特性として
かさ比重、流動性指数、崩壊性および剪断荷重を実施例
１と同様にしてを測定した。その結果を第１表に示す。Comparative Example 1 10% hydrochloric acid was added to the copolymer latex 3 obtained in Example 1.
After adding 300 ml to solidify, Example 1 without adding anything
The same filtration, heat treatment, dehydration and drying as those described above were carried out to obtain a synthetic resin powder. As the powder characteristics of the obtained synthetic resin powder, bulk specific gravity, fluidity index, disintegration property and shear load were measured in the same manner as in Example 1. The results are shown in Table 1.
比較例２ 実施例１でえられた共重合体ラテックス３に10％塩酸
300mlを加えて凝固させた後、25％硬化ヒマシ油の乳化
分散液600mlを添加し、実施例１と同じ濾過、熱処理、
脱水および乾燥を行なって合成樹脂粉末をえた。えられ
た合成樹脂粉末の粉体特性として、かさ比重、流動性指
数、崩壊性および剪断荷重を実施例１と同様にして測定
した。その結果を第１表に示す。Comparative Example 2 10% hydrochloric acid was added to the copolymer latex 3 obtained in Example 1.
After adding 300 ml to solidify, 600 ml of an emulsion dispersion of 25% hydrogenated castor oil was added, and the same filtration, heat treatment as in Example 1,
By dehydration and drying, a synthetic resin powder was obtained. As the powder characteristics of the obtained synthetic resin powder, bulk specific gravity, fluidity index, disintegration property and shear load were measured in the same manner as in Example 1. The results are shown in Table 1.
比較例３ 実施例４において、実施例１でえられた共重合体ラテッ
クス３に10％ペンタエリトリトールテトラステアレー
トの乳化分散液100mlを添加した後に、10％塩酸300mlを
加えて凝固させたほかは実施例４と同様にして合成樹脂
粉末をえた。えられた合成樹脂粉末の粉体特性として、
かさ比重、流動性指数および崩壊性を実施例１と同様に
して測定した。その結果を第１表に示す。Comparative Example 3 In Example 4, except that 100 ml of an emulsion dispersion of 10% pentaerythritol tetrastearate was added to the copolymer latex 3 obtained in Example 1, and then 300 ml of 10% hydrochloric acid was added to coagulate it. A synthetic resin powder was obtained in the same manner as in Example 4. As powder characteristics of the obtained synthetic resin powder,
Bulk specific gravity, fluidity index and disintegration were measured in the same manner as in Example 1. The results are shown in Table 1.
またえられた実施例１〜５ならびに比較例１および２の
合成樹脂10重量部とジオクチル錫メルカプト系安定剤1.
2重量部およびステアリン酸カルシウム１重量部をポリ
塩化ビニル樹脂（カネビニルS1001）100重量部に配合
し、８分間180℃でロールにて加熱混練した後、200℃で
15分間のプレス成形を行ない、シート状の成形体を作製
し、透明性測定用テストピース（長さ：５cm、幅：５c
m、厚さ：６mm）および熱安定性測定用テストピース
（長さ：３cm、幅：５cm、厚さ：１mm）を作製した。熱
安定性の測定結果を第２表に示す。なお、透明性はJIS
Ｋ 7105、熱安定性はJIS Ｋ 7212に基づいて測定
した。Further, 10 parts by weight of the synthetic resins obtained in Examples 1 to 5 and Comparative Examples 1 and 2 and dioctyltin mercapto-based stabilizer 1.
2 parts by weight and 1 part by weight of calcium stearate were mixed with 100 parts by weight of polyvinyl chloride resin (Kanevinyl S1001), heated and kneaded with a roll at 180 ° C for 8 minutes, and then at 200 ° C.
Press molding for 15 minutes to make a sheet-shaped compact, and test piece for transparency measurement (length: 5 cm, width: 5 c
m, thickness: 6 mm) and a test piece for measuring thermal stability (length: 3 cm, width: 5 cm, thickness: 1 mm). The results of measuring the thermal stability are shown in Table 2. The transparency is JIS
K 7105 and thermal stability were measured according to JIS K 7212.
〔発明の効果〕 本発明によれば合成樹脂粉末のかさ比重を大きくするこ
とができ、さらに流動性および耐ブロッキング性を従来
より知られている方法を用いたばあいに比べていちじる
しく向上させることができる。したがって合成樹脂粉末
の貯蔵中のブロッキング現象や輸送ラインの詰まりをな
くすことができるだけでなく粉末の自動計量および輸送
の大型化を可能にすることができる。 [Advantages of the Invention] According to the present invention, it is possible to increase the bulk specific gravity of the synthetic resin powder, and further improve the fluidity and blocking resistance significantly compared with the case where a conventionally known method is used. You can Therefore, not only the blocking phenomenon during storage of the synthetic resin powder and the clogging of the transportation line can be eliminated, but also the automatic weighing and transportation of the powder can be increased in size.
Claims (1)
ラテックスを凝固し、該共重合体100重量部に対して滑
剤0.01〜10重量部を添加することを特徴とする合成樹脂
粉末の粉体特性の改良方法。1. A powder of synthetic resin powder, characterized in that a graft copolymer latex having rubber as a trunk polymer is coagulated, and 0.01 to 10 parts by weight of a lubricant is added to 100 parts by weight of the copolymer. How to improve properties.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63089884A JPH0655833B2 (en) | 1987-04-13 | 1988-04-12 | Method for improving powder properties of synthetic resin powder |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9007787 | 1987-04-13 | ||
| JP62-90077 | 1987-04-13 | ||
| JP63089884A JPH0655833B2 (en) | 1987-04-13 | 1988-04-12 | Method for improving powder properties of synthetic resin powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6426644A JPS6426644A (en) | 1989-01-27 |
| JPH0655833B2 true JPH0655833B2 (en) | 1994-07-27 |
Family
ID=26431283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63089884A Expired - Lifetime JPH0655833B2 (en) | 1987-04-13 | 1988-04-12 | Method for improving powder properties of synthetic resin powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0655833B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05262953A (en) * | 1992-03-19 | 1993-10-12 | Mitsubishi Rayon Co Ltd | Production of graft copolymer particle containing rubber |
| JPWO2007034660A1 (en) | 2005-09-20 | 2009-03-19 | 株式会社カネカ | Method for producing resin powder |
| WO2007125597A1 (en) * | 2006-04-28 | 2007-11-08 | Kaneka Corporation | Process for producing resin particulate |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5834497B2 (en) * | 1973-09-04 | 1983-07-27 | 大日本インキ化学工業株式会社 | Ethylene-vinyl ester |
| US4213888A (en) * | 1978-07-14 | 1980-07-22 | Copolymer Rubber & Chemical Corporation | Particulate elastomeric materials and method |
| JPS58152028A (en) * | 1982-03-05 | 1983-09-09 | Toagosei Chem Ind Co Ltd | Powdery polymer |
| JPS5947698A (en) * | 1982-08-25 | 1984-03-17 | 横河電機株式会社 | 2-wire current transmitter |
-
1988
- 1988-04-12 JP JP63089884A patent/JPH0655833B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6426644A (en) | 1989-01-27 |
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