JPH0674415B2 - Coolant composition - Google Patents
Coolant compositionInfo
- Publication number
- JPH0674415B2 JPH0674415B2 JP1113426A JP11342689A JPH0674415B2 JP H0674415 B2 JPH0674415 B2 JP H0674415B2 JP 1113426 A JP1113426 A JP 1113426A JP 11342689 A JP11342689 A JP 11342689A JP H0674415 B2 JPH0674415 B2 JP H0674415B2
- Authority
- JP
- Japan
- Prior art keywords
- strontium
- cooling liquid
- liquid composition
- weight
- corrosion
- 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
- 239000000203 mixture Substances 0.000 title claims description 28
- 239000002826 coolant Substances 0.000 title claims description 6
- 239000000110 cooling liquid Substances 0.000 claims description 29
- -1 amine salts Chemical class 0.000 claims description 12
- 150000003438 strontium compounds Chemical class 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 150000002334 glycols Chemical class 0.000 claims description 4
- 150000004760 silicates Chemical class 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 235000021317 phosphate Nutrition 0.000 claims description 3
- 150000003557 thiazoles Chemical class 0.000 claims description 3
- 150000003852 triazoles Chemical class 0.000 claims description 3
- 150000001558 benzoic acid derivatives Chemical class 0.000 claims description 2
- 150000001642 boronic acid derivatives Chemical class 0.000 claims description 2
- 150000002823 nitrates Chemical class 0.000 claims description 2
- 150000002826 nitrites Chemical class 0.000 claims description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 description 25
- 230000007797 corrosion Effects 0.000 description 25
- 239000003112 inhibitor Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 11
- DHEQXMRUPNDRPG-UHFFFAOYSA-N strontium nitrate Chemical compound [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O DHEQXMRUPNDRPG-UHFFFAOYSA-N 0.000 description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- 229910000838 Al alloy Inorganic materials 0.000 description 8
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Chemical compound [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 description 6
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 4
- 238000005536 corrosion prevention Methods 0.000 description 4
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 229910052712 strontium Inorganic materials 0.000 description 3
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 3
- JOPDZQBPOWAEHC-UHFFFAOYSA-H tristrontium;diphosphate Chemical compound [Sr+2].[Sr+2].[Sr+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O JOPDZQBPOWAEHC-UHFFFAOYSA-H 0.000 description 3
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 2
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 description 2
- 229960004063 propylene glycol Drugs 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 2
- 235000010234 sodium benzoate Nutrition 0.000 description 2
- 239000004299 sodium benzoate Substances 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Chemical compound [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 description 2
- PLYYQWWELYJSEB-DEOSSOPVSA-N (2s)-2-(2,3-dihydro-1h-inden-2-yl)-2-(9h-fluoren-9-ylmethoxycarbonylamino)acetic acid Chemical compound C1C2=CC=CC=C2CC1[C@@H](C(=O)O)NC(=O)OCC1C2=CC=CC=C2C2=CC=CC=C21 PLYYQWWELYJSEB-DEOSSOPVSA-N 0.000 description 1
- 229940058015 1,3-butylene glycol Drugs 0.000 description 1
- TXNFKHHYTGEPRL-UHFFFAOYSA-N 1-[4-(trifluoromethylsulfanyl)phenyl]ethanone Chemical compound CC(=O)C1=CC=C(SC(F)(F)F)C=C1 TXNFKHHYTGEPRL-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 150000001565 benzotriazoles Chemical class 0.000 description 1
- 235000019437 butane-1,3-diol Nutrition 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- NHFDKKSSQWCEES-UHFFFAOYSA-N dihydrogen phosphate;tris(2-hydroxyethyl)azanium Chemical compound OP(O)(O)=O.OCCN(CCO)CCO NHFDKKSSQWCEES-UHFFFAOYSA-N 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 229940093476 ethylene glycol Drugs 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229940051250 hexylene glycol Drugs 0.000 description 1
- 229940049920 malate Drugs 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N malic acid Chemical compound OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- IWYDHOAUDWTVEP-UHFFFAOYSA-M mandelate Chemical compound [O-]C(=O)C(O)C1=CC=CC=C1 IWYDHOAUDWTVEP-UHFFFAOYSA-M 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XKLJHFLUAHKGGU-UHFFFAOYSA-N nitrous amide Chemical compound ON=N XKLJHFLUAHKGGU-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical class O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- 235000015393 sodium molybdate Nutrition 0.000 description 1
- 239000011684 sodium molybdate Substances 0.000 description 1
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- PLFNQUXWYPAPAW-UHFFFAOYSA-L strontium 2,3,4-trihydroxy-4-oxobutanoate Chemical compound C(=O)(O)C(O)C(O)C(=O)[O-].[Sr+2].C(=O)(O)C(O)C(O)C(=O)[O-] PLFNQUXWYPAPAW-UHFFFAOYSA-L 0.000 description 1
- 229910001631 strontium chloride Inorganic materials 0.000 description 1
- AHBGXTDRMVNFER-UHFFFAOYSA-L strontium dichloride Chemical compound [Cl-].[Cl-].[Sr+2] AHBGXTDRMVNFER-UHFFFAOYSA-L 0.000 description 1
- UUCCCPNEFXQJEL-UHFFFAOYSA-L strontium dihydroxide Chemical compound [OH-].[OH-].[Sr+2] UUCCCPNEFXQJEL-UHFFFAOYSA-L 0.000 description 1
- FVRNDBHWWSPNOM-UHFFFAOYSA-L strontium fluoride Chemical compound [F-].[F-].[Sr+2] FVRNDBHWWSPNOM-UHFFFAOYSA-L 0.000 description 1
- 229910001637 strontium fluoride Inorganic materials 0.000 description 1
- 229910001866 strontium hydroxide Inorganic materials 0.000 description 1
- KRIJWFBRWPCESA-UHFFFAOYSA-L strontium iodide Chemical compound [Sr+2].[I-].[I-] KRIJWFBRWPCESA-UHFFFAOYSA-L 0.000 description 1
- 229910001643 strontium iodide Inorganic materials 0.000 description 1
- KQAGKTURZUKUCH-UHFFFAOYSA-L strontium oxalate Chemical compound [Sr+2].[O-]C(=O)C([O-])=O KQAGKTURZUKUCH-UHFFFAOYSA-L 0.000 description 1
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 description 1
- XUBXWWLLZIPPHW-DFWYDOINSA-L strontium;(2s)-2-aminopentanedioate Chemical compound [Sr+2].[O-]C(=O)[C@@H](N)CCC([O-])=O XUBXWWLLZIPPHW-DFWYDOINSA-L 0.000 description 1
- QRGQLRSDSGSLBD-CVBJKYQLSA-L strontium;(z)-octadec-9-enoate Chemical compound [Sr+2].CCCCCCCC\C=C/CCCCCCCC([O-])=O.CCCCCCCC\C=C/CCCCCCCC([O-])=O QRGQLRSDSGSLBD-CVBJKYQLSA-L 0.000 description 1
- CCUZKVDGQHXAFK-UHFFFAOYSA-L strontium;2-hydroxypropanoate Chemical compound [Sr+2].CC(O)C([O-])=O.CC(O)C([O-])=O CCUZKVDGQHXAFK-UHFFFAOYSA-L 0.000 description 1
- ITUCOQTVTSFGRJ-UHFFFAOYSA-L strontium;butanoate Chemical compound [Sr+2].CCCC([O-])=O.CCCC([O-])=O ITUCOQTVTSFGRJ-UHFFFAOYSA-L 0.000 description 1
- AYPTZFGEAMGYBT-UHFFFAOYSA-L strontium;decanedioate Chemical compound [Sr+2].[O-]C(=O)CCCCCCCCC([O-])=O AYPTZFGEAMGYBT-UHFFFAOYSA-L 0.000 description 1
- RXSHXLOMRZJCLB-UHFFFAOYSA-L strontium;diacetate Chemical compound [Sr+2].CC([O-])=O.CC([O-])=O RXSHXLOMRZJCLB-UHFFFAOYSA-L 0.000 description 1
- RDRLLHKVJZUFIB-UHFFFAOYSA-L strontium;dibenzoate Chemical compound [Sr+2].[O-]C(=O)C1=CC=CC=C1.[O-]C(=O)C1=CC=CC=C1 RDRLLHKVJZUFIB-UHFFFAOYSA-L 0.000 description 1
- FXWRHZACHXRMCI-UHFFFAOYSA-L strontium;diformate Chemical compound [Sr+2].[O-]C=O.[O-]C=O FXWRHZACHXRMCI-UHFFFAOYSA-L 0.000 description 1
- AOKGFBICYSLGKE-UHFFFAOYSA-L strontium;dihydrogen phosphate Chemical compound [Sr+2].OP(O)([O-])=O.OP(O)([O-])=O AOKGFBICYSLGKE-UHFFFAOYSA-L 0.000 description 1
- OYNZODZYCSVISG-UHFFFAOYSA-L strontium;dodecanoate Chemical compound [Sr+2].CCCCCCCCCCCC([O-])=O.CCCCCCCCCCCC([O-])=O OYNZODZYCSVISG-UHFFFAOYSA-L 0.000 description 1
- FRKHZXHEZFADLA-UHFFFAOYSA-L strontium;octadecanoate Chemical compound [Sr+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O FRKHZXHEZFADLA-UHFFFAOYSA-L 0.000 description 1
- LLOLUUSIFMACRO-UHFFFAOYSA-L strontium;pentanoate Chemical compound [Sr+2].CCCCC([O-])=O.CCCCC([O-])=O LLOLUUSIFMACRO-UHFFFAOYSA-L 0.000 description 1
- KGCOMQDJRDGWDD-UHFFFAOYSA-L strontium;phthalate Chemical compound [Sr+2].[O-]C(=O)C1=CC=CC=C1C([O-])=O KGCOMQDJRDGWDD-UHFFFAOYSA-L 0.000 description 1
- LVZZABGEQTZXHP-UHFFFAOYSA-L strontium;propanedioate Chemical compound [Sr+2].[O-]C(=O)CC([O-])=O LVZZABGEQTZXHP-UHFFFAOYSA-L 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- LNSYCBFBTCINRL-UHFFFAOYSA-N tristrontium;diborate Chemical compound [Sr+2].[Sr+2].[Sr+2].[O-]B([O-])[O-].[O-]B([O-])[O-] LNSYCBFBTCINRL-UHFFFAOYSA-N 0.000 description 1
- CMPGARWFYBADJI-UHFFFAOYSA-L tungstic acid Chemical compound O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、冷却液組成物に関し、更に詳細には特に内燃
機関に使用するアルミニウム合金に対して、優れた腐食
防止効果を有する冷却液組成物に関する。Description: TECHNICAL FIELD The present invention relates to a cooling liquid composition, and more particularly, to a cooling liquid composition having an excellent corrosion prevention effect particularly on an aluminum alloy used in an internal combustion engine. Regarding things.
（従来の技術） 主にエンジン等の内燃機関の冷却系統を構成しているシ
リンダブロック、シリンダヘッド、ラジエータ、ウォー
タポンプ等は、アルミニウム合金や銅等の金属材料から
成るが、これら金属材料は、冷却液中の水に含まれる腐
食性の塩類、或いは不凍液に含まれるアルコール類によ
って腐食を受け易いため、前記冷却液に腐食防止剤を含
有させる必要があった。ここで、従来における冷却液中
の腐食防止剤としては、 燐酸塩、ホウ酸塩、炭酸塩、硫酸塩、硝酸塩、モリブ
デン酸塩、安息香酸塩、ベンゾトリアゾール類等が挙げ
られ、通常はこれらを適宜組み合わせたものが冷却液に
添加されていた。(Prior Art) A cylinder block, a cylinder head, a radiator, a water pump, etc., which mainly constitute a cooling system of an internal combustion engine such as an engine, are made of a metal material such as an aluminum alloy or copper. Since the corrosive salts contained in the water in the cooling liquid or the alcohols contained in the antifreezing liquid are apt to be corroded, the cooling liquid needs to contain a corrosion inhibitor. Here, conventional corrosion inhibitors in cooling liquids include phosphates, borates, carbonates, sulfates, nitrates, molybdates, benzoates, benzotriazoles, etc. An appropriate combination was added to the cooling liquid.
また、代表的な冷却液の組成としては、例えば英国規格
BS3150、及びBS3151を挙げることができるがこれらはエ
チレングリコールを基剤としており、BS3150は、燐酸ト
リエタノールアミン塩、及びメルカプトベンゾチアゾー
ルのナトリウム塩を、BS3151は安息香酸ナトリウム、及
び亜硝酸ナトリウムを各々腐食防止剤として添加するも
のであった。しかしながら、前記腐食防止剤を単独で冷
却液に添加したものは前記冷却系統の金属に対して満足
な腐食防止効果が得られなかった。A typical coolant composition is, for example, a British standard.
Although BS3150 and BS3151 can be mentioned, these are based on ethylene glycol, BS3150 is triethanolamine phosphate, and sodium salt of mercaptobenzothiazole, BS3151 is sodium benzoate, and sodium nitrite, respectively. It was added as a corrosion inhibitor. However, when the corrosion inhibitor was added alone to the cooling liquid, a satisfactory corrosion prevention effect on the metal of the cooling system could not be obtained.
また、他に冷却液に添加する腐食防止剤としてアミン
塩、亜硝酸塩、ケイ酸塩が提案されていた。In addition, amine salts, nitrites, and silicates have been proposed as corrosion inhibitors to be added to the cooling liquid.
（発明が解決しようとする課題） しかし、前記の従来の腐食防止剤を採用した冷却液の
場合には、前記アミン塩は亜硝酸塩の存在下では、毒性
のあるニトロソアミンを生成し、またケイ酸塩は、熱安
定性に欠け、pHが不安定であり、他の塩類との共存時に
は容易にゲル化を起して本来の腐食防止効果が低下する
など他の腐食防止剤との併用による弊害発生の問題があ
った。(Problems to be Solved by the Invention) However, in the case of the cooling liquid adopting the conventional corrosion inhibitor, the amine salt produces toxic nitrosamine in the presence of nitrite, and silicic acid Salt has poor thermal stability and unstable pH, and when coexisting with other salts, it easily gels and reduces the original corrosion prevention effect. There was a problem of occurrence.
そこで本発明は、上記従来の問題及び欠点を除くため
に、ストロンチウム化合物を冷却液組成物の0.0001〜0.
1重量％含有した冷却液組成物であって、冷却系統の金
属部分において優れた腐食防止効果を有し、さらに、他
の腐食防止剤と併用する場合においても、弊害のある腐
食防止剤の添加量を抑制することができると共に安定し
た冷却液組成物を容易に提供することを目的とするもの
である。Therefore, the present invention, in order to eliminate the above-mentioned conventional problems and drawbacks, strontium compound 0.0001 ~ 0.
A cooling liquid composition containing 1% by weight, which has an excellent effect of preventing corrosion in the metal part of the cooling system, and when used in combination with other corrosion inhibitors, the addition of harmful corrosion inhibitors It is an object of the present invention to easily provide a stable cooling liquid composition which can suppress the amount.
（課題を解決するための手段） 上記の目的を達成させるため、本発明の構成を以下に説
明する。(Means for Solving the Problems) In order to achieve the above object, the configuration of the present invention will be described below.
即ち、本発明は、 １）．ストロンチウム化合物を、冷却液組成物の0.0001
〜0.1重量％含有することを特徴とする冷却液組成物、 ２）．水及びグリコール類のうち、少なくとも１種を含
有すると共に、燐酸塩、アミン塩、ホウ酸塩、硝酸塩、
亜硝酸塩、モリブデン酸塩、安息香酸塩、トリアゾール
類、チアゾール類、脂肪酸塩、ケイ酸塩のうち、少なく
とも１種を含有することを特徴とする請求項１記載の冷
却液組成物を各々内容とするものである。That is, the present invention is 1). The strontium compound was added to 0.0001 of the cooling liquid composition.
To 0.1% by weight, 2). In addition to containing at least one of water and glycols, a phosphate, an amine salt, a borate, a nitrate,
The cooling liquid composition according to claim 1, which contains at least one of nitrite, molybdate, benzoate, triazoles, thiazoles, fatty acid salts, and silicates. To do.
（作用） そして上記のような本発明を採用した場合、請求項１記
載の冷却液組成物においては、ストロンチウム化合物
を、該冷却液組成物の0.0001〜0.1重量％含有して金属
部分の腐食防止に作用する。(Operation) When the present invention as described above is adopted, in the cooling liquid composition according to claim 1, 0.0001 to 0.1% by weight of the cooling liquid composition is contained to prevent corrosion of the metal part. Act on.
また請求項２記載の冷却液組成物においては、ストロン
チウム化合物を該冷却液組成物の0.0001〜0.1重量％含
有して金属部分の腐食防止に作用し、水及びグリコール
類のうち、少なくとも１種を含有すると共に、燐酸塩、
アミン塩、ホウ酸塩、硝酸塩、亜硝酸塩、モリブデン酸
塩、安息香酸塩、トリアゾール類、チアゾール類、脂肪
酸塩、ケイ酸塩の腐食防止剤のうち、少なくとも１種を
含有していて、前記ストロンチウム化合物を含有するこ
とによって前記腐食防止剤の添加量を抑制する。Further, in the cooling liquid composition according to claim 2, 0.0001 to 0.1% by weight of the cooling liquid composition is contained in the cooling liquid composition to act to prevent corrosion of a metal part, and at least one of water and glycols is added. In addition to containing,
The strontium containing at least one of corrosion inhibitors of amine salt, borate, nitrate, nitrite, molybdate, benzoate, triazoles, thiazoles, fatty acid salts and silicates. The inclusion of the compound suppresses the amount of the corrosion inhibitor added.
（実施例） 以下本発明に係る冷却液組成物の実施例につき詳細に説
明するが、本実施例によって本発明が限定されるもので
はない。(Examples) Examples of the cooling liquid composition according to the present invention will be described in detail below, but the present invention is not limited to these examples.
ここで本実施例の内容は第１表に示し、比較例の内容
は、第２表に示してある。The contents of this example are shown in Table 1 and the contents of the comparative example are shown in Table 2.
但し、本実施例のサンプルは、No.1〜６とし、比較例の
サンプルはNo.7〜11とする。However, the samples of this example are Nos. 1 to 6, and the samples of the comparative examples are Nos. 7 to 11.
また、実施例及び比較例においては、ストロンチウム化
合物として硝酸ストロンチウム、硫酸ストロンチウム、
燐酸ストロンチウムを採用し、従来の腐食防止剤として
は、オルトリン酸、安息香酸ソーダ、モリブデン酸ソー
ダ、メルカプトベンゾチアゾールソーダ、ベンゾトリア
ゾール、硝酸ソーダ、トリエタノールアミン、メタケイ
酸ソーダ（Na2SiO3・9H2O）を採用した。Further, in Examples and Comparative Examples, strontium nitrate as a strontium compound, strontium sulfate,
Adopting strontium phosphate, as conventional corrosion inhibitors, orthophosphoric acid, sodium benzoate, sodium molybdate, mercaptobenzothiazole soda, benzotriazole, sodium nitrate, triethanolamine, sodium metasilicate (Na 2 SiO 3 9H 2 O) was adopted.
尚、本発明に係る冷却液組成物のストロンチウム化合物
としては、酸化ストロンチウム、水酸化ストロンチウ
ム、塩化ストロンチウム、弗化ストロンチウム、ヨウ化
ストロンチウム、硫酸ストロンチウム、硝酸ストロンチ
ウム、チタン酸ストロンチウム、ホウ酸ストロンチウ
ム、タングステン酸ストロンチウム、燐酸ストロンチウ
ム、燐酸二水素ストロンチウム、蟻酸ストロンチウム、
酢酸ストロンチウム、プロピオン酸ストロンチウム、酪
酸ストロンチウム、吉草酸ストロンチウム、ラウリン酸
ストロンチウム、ステアリン酸ストロンチウム、オレイ
ン酸ストロンチウム、グルタミン酸ストロンチウム、乳
酸ストロンチウム、コハク酸ストロンチウム、リンゴ酸
ストロンチウム、酒石酸ストロンチウム、マレイン酸ス
トロンチウム、クエン酸ストロンチウム、蓚酸ストロン
チウム、マロン酸ストロンチウム、セバシン酸ストロン
チウム、安息香酸ストロンチウム、フタル酸ストロンチ
ウム、サリチル酸ストロンチウム、マンデル酸ストロン
チウム等が採用できるが、その中でも、特に硝酸ストロ
ンチウム、硫酸ストロンチウム、燐酸ストロンチウムが
望ましい。Incidentally, as the strontium compound of the cooling liquid composition according to the present invention, strontium oxide, strontium hydroxide, strontium chloride, strontium fluoride, strontium iodide, strontium sulfate, strontium nitrate, strontium titanate, strontium borate, tungstic acid. Strontium, strontium phosphate, strontium dihydrogen phosphate, strontium formate,
Strontium acetate, strontium propionate, strontium butyrate, strontium valerate, strontium laurate, strontium stearate, strontium oleate, strontium glutamate, strontium lactate, strontium succinate tartrate, strontium strontium tartrate, tartrate malate, strontium tartrate tartrate, maleate , Strontium oxalate, strontium malonate, strontium sebacate, strontium benzoate, strontium phthalate, strontium salicylate, strontium mandelate, and the like can be adopted, and among them, strontium nitrate, strontium sulfate, and strontium phosphate are particularly preferable.
またグリコール類を含む場合において、エチレングリコ
ール、プロピレングリコール、1,3−ブチレングリコー
ル、ヘキシレングリコール、ジエチレングリコール、グ
リセリン等があるが、その中でも特にエチレングリコー
ル或いはプロピレングリコールが望ましい。In the case of containing glycols, there are ethylene glycol, propylene glycol, 1,3-butylene glycol, hexylene glycol, diethylene glycol, glycerin and the like, among which ethylene glycol or propylene glycol is particularly preferable.
また、本発明に係る冷却液組成物において、ストロンチ
ウム化合物を、冷却液組成物の0.0001〜0.1重量％含有
することを特徴としている理由は、ストロンチウム化合
物が冷却液組成物の0.0001％重量％以下では、例えば、
第２表中の比較例の0.00005重量％の硝酸ストロンチウ
ムを含有するNo7のように、第５表の試験片の‐1.02（m
g/cm2）と多い重量変化及び白濁した外観変化と、サン
プルの黒変した外観変化があり、十分な腐食防止効果が
得られず、また0.1重量％以上ではストロンチウム化合
物の安定した溶解性が得られないという欠点があったか
らである。Further, in the cooling liquid composition according to the present invention, the reason that the strontium compound, 0.0001 to 0.1 wt% of the cooling liquid composition is contained is because the strontium compound is 0.0001% by weight or less of the cooling liquid composition. , For example,
Like No. 7 containing 0.00005% by weight of strontium nitrate in the comparative example in Table 2, -1.02 (m
(g / cm 2 ), there are a large amount of weight change, white turbid appearance change, and black appearance change of the sample, and a sufficient corrosion prevention effect cannot be obtained.More than 0.1% by weight, stable solubility of the strontium compound is observed. This is because there was a drawback that it could not be obtained.
以下本発明に係る冷却液組成物の実施例に基づく試験条
件及び試験結果について説明する。尚、前記試験方法に
ついては、ASTM4340−84（Corrosin of Cast Aluminum
Alloys in Engine Coolants Under Heat-Rejecting Con
di-tions）に規定されているアルミニウム合金伝熱面腐
食試験による方法を採用した。The test conditions and test results based on the examples of the cooling liquid composition according to the present invention will be described below. In addition, regarding the test method, ASTM4340-84 (Corrosin of Cast Aluminum
Alloys in Engine Coolants Under Heat-Rejecting Con
The method by the aluminum alloy heat transfer surface corrosion test specified in di-tions) was adopted.
また、試験条件については、第３表、試験結果について
は第４表及び第５表に各々示すものとする。The test conditions are shown in Table 3, and the test results are shown in Tables 4 and 5, respectively.
つまり、本発明に係る実施例のNo3については、第１表
及び第４表より、ストロンチウム化合物を0.1重量％含
有していて、従来の腐食防止剤を含有していなくても、
試験片の重量変化が少なく、かつ外観変化も、わずかな
変色がある程度であり、さらにサンプルの外観変化もな
く腐食防止剤効果に優れることが明らかである。That is, regarding No. 3 of the example according to the present invention, from Table 1 and Table 4, even if 0.1% by weight of the strontium compound is contained and no conventional corrosion inhibitor is contained,
It is clear that the weight change of the test piece is small, the appearance change is slight discoloration to some extent, and the appearance of the sample is not changed, and the corrosion inhibitor effect is excellent.
また第１表中の実施例No4については、硝酸ストロンチ
ウムを0.005重量％含有し、さらに腐食防止剤のトリエ
タノールアミンを0.2重量％含有していて、第２表中の
比較例No10が腐食防止剤のトリエタノールアミンを2.5
重量％含有しているのと比較して含有量（重量％）にお
いて10分の１以下になっているが、第３表に示す通り試
験片の重量変化が‐0.08（mg/cm2）と極めて少なく、か
つ外観変化がなく、またサンプルにおいても外観変化が
ないのである。Further, in Example No. 4 in Table 1, 0.005% by weight of strontium nitrate was contained, and 0.2% by weight of triethanolamine as a corrosion inhibitor was contained, and Comparative Example No. 10 in Table 2 was a corrosion inhibitor. 2.5 of triethanolamine
The content (% by weight) is less than 1/10 of the content (% by weight), but the weight change of the test piece is -0.08 (mg / cm 2 ) as shown in Table 3. It is extremely small and there is no change in appearance, and there is no change in appearance in the sample.
つまり、本発明に係る冷却液組成物は、他の腐食防止剤
と併用していても安定した腐食防止効果をもつと共に併
用する他の腐食防止剤の添加量を抑制できるのである。That is, the coolant composition according to the present invention has a stable corrosion inhibiting effect even when used in combination with other corrosion inhibitors, and can suppress the amount of addition of other corrosion inhibitors used in combination.
さらに、第２表及び第５表に示すように比較例No8〜11
において、No10及びNo11を除いて試験片が全て黒変し、
またNo10を除いてサンプルがすべて白濁または沈澱物を
生成しているのに対し、実施例のNo1及びNo2とNo4〜No6
については、第１表及び第４表に示すように他の腐食防
止剤を併用していても試験片の重量変化も極めて少な
く、かつサンプルの外観変化もなくて腐食防止効果に優
れるものである。Furthermore, as shown in Tables 2 and 5, Comparative Examples No. 8-11
In, all the test pieces except No10 and No11 turned black,
In addition, all of the samples except No10 produced white turbidity or precipitates, while No1 and No2 and No4 to No6 of the examples.
As shown in Tables 1 and 4, even if other corrosion inhibitors were used in combination, the change in weight of the test piece was extremely small, and there was no change in the appearance of the sample, which is excellent in the effect of preventing corrosion. .
以上、実施例より本発明に係る冷却液組成物が特にアル
ミニウム合金に優れた腐食防止効果をもつことが明らか
である。As described above, it is clear from the examples that the cooling liquid composition according to the present invention has an excellent corrosion inhibiting effect particularly on aluminum alloys.
（発明の効果） 以上説明した通り、本発明に係る冷却液組成物による
と、ストロンチウム化合物を冷却液組成物の0.0001〜0.
1重量％含有していて、冷却系統の金属部分に優れた腐
食防止効果を有し、また請求項２記載においては、従来
の腐食防止剤と併用する場合に、弊害のある腐食防止剤
の添加量を抑制することができると共に安定した冷却液
組成物を容易に提供するものである。 (Effects of the Invention) As described above, according to the cooling liquid composition of the present invention, the strontium compound is added to the cooling liquid composition at 0.0001 to 0.
It contains 1% by weight and has an excellent anticorrosion effect on the metal part of the cooling system. Further, in claim 2, when the anticorrosion agent is used in combination with the conventional anticorrosion agent, the addition of the anticorrosion agent. It is possible to suppress the amount and easily provide a stable cooling liquid composition.
また、本発明に係る冷却液組成物は、アルミニウム合
金、銅合金等種々の金属に腐食防止効果をもつが、中で
も特にアルミニウム合金に優れた腐食防止効果をもつた
め、自動車等車体の軽量化を図る目的で冷却系統にアル
ミニウム合金を多く採用する傾向にある近年においては
極めて有効である。Further, the cooling liquid composition according to the present invention has an anticorrosion effect on various metals such as aluminum alloys and copper alloys, but among others, since it has an excellent anticorrosion effect on aluminum alloys in particular, it is possible to reduce the weight of automobile bodies such as automobiles. This is extremely effective in recent years when there is a tendency to use a large amount of aluminum alloy in the cooling system for the purpose of achieving it.
Claims (2)
0.0001〜0.1重量％含有することを特徴とする冷却液組
成物。1. A strontium compound is used as a coolant composition.
A coolant composition comprising 0.0001 to 0.1% by weight.
種を含有すると共に、燐酸塩、アミン塩、ホウ酸塩、硝
酸塩、亜硝酸塩、モリブデン酸塩、安息香酸塩、トリア
ゾール類、チアゾール類、脂肪酸塩、ケイ酸塩のうち、
少なくとも１種を含有することを特徴とする請求項１記
載の冷却液組成物。2. At least one of water and glycols
In addition to containing seeds, among phosphates, amine salts, borates, nitrates, nitrites, molybdates, benzoates, triazoles, thiazoles, fatty acid salts, silicates,
The cooling liquid composition according to claim 1, which contains at least one kind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1113426A JPH0674415B2 (en) | 1989-05-01 | 1989-05-01 | Coolant composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1113426A JPH0674415B2 (en) | 1989-05-01 | 1989-05-01 | Coolant composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02292386A JPH02292386A (en) | 1990-12-03 |
| JPH0674415B2 true JPH0674415B2 (en) | 1994-09-21 |
Family
ID=14611933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1113426A Expired - Lifetime JPH0674415B2 (en) | 1989-05-01 | 1989-05-01 | Coolant composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0674415B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3941030B2 (en) * | 1999-09-02 | 2007-07-04 | シーシーアイ株式会社 | Low phosphorus coolant composition |
| JP2002294227A (en) * | 2001-03-29 | 2002-10-09 | Komatsu Ltd | Antifreeze / coolant composition |
| WO2005006476A1 (en) | 2003-07-11 | 2005-01-20 | Shishiai-Kabushikigaisha | Cooling fluid composition for fuel battery |
| AU2003296103A1 (en) | 2003-10-01 | 2005-04-21 | Shishiai-Kabushikigaisha | Liquid coolant composition |
| JPWO2005037951A1 (en) * | 2003-10-16 | 2006-12-28 | シーシーアイ株式会社 | Coolant composition |
| WO2005052086A1 (en) * | 2003-11-26 | 2005-06-09 | Shishiai-Kabushikigaisha | Cooling fluid composition |
| AU2003296134A1 (en) * | 2003-12-25 | 2005-07-21 | Shishiai-Kabushikigaisha | Cooling fluid composition |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06100398B2 (en) * | 1988-03-31 | 1994-12-12 | 工業技術院長 | Water vapor absorbing medium |
-
1989
- 1989-05-01 JP JP1113426A patent/JPH0674415B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02292386A (en) | 1990-12-03 |
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