JPS6010542B2 - Thermoplastic resin composition with excellent paintability - Google Patents
Thermoplastic resin composition with excellent paintabilityInfo
- Publication number
- JPS6010542B2 JPS6010542B2 JP13908678A JP13908678A JPS6010542B2 JP S6010542 B2 JPS6010542 B2 JP S6010542B2 JP 13908678 A JP13908678 A JP 13908678A JP 13908678 A JP13908678 A JP 13908678A JP S6010542 B2 JPS6010542 B2 JP S6010542B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- thermoplastic resin
- resin composition
- aromatic monovinyl
- parts
- 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
Links
- 239000011342 resin composition Substances 0.000 title claims description 8
- 229920005992 thermoplastic resin Polymers 0.000 title claims description 8
- 229920000578 graft copolymer Polymers 0.000 claims description 12
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 11
- 125000003118 aryl group Chemical group 0.000 claims description 10
- 229920001577 copolymer Polymers 0.000 claims description 10
- 229920006324 polyoxymethylene Polymers 0.000 claims description 10
- 229930182556 Polyacetal Natural products 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 229920003244 diene elastomer Polymers 0.000 claims description 3
- STSRVFAXSLNLLI-UHFFFAOYSA-N penta-2,4-dienenitrile Chemical compound C=CC=CC#N STSRVFAXSLNLLI-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 8
- 239000005060 rubber Substances 0.000 description 8
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 6
- 108090000623 proteins and genes Proteins 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000010422 painting Methods 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- SBYMUDUGTIKLCR-UHFFFAOYSA-N 2-chloroethenylbenzene Chemical compound ClC=CC1=CC=CC=C1 SBYMUDUGTIKLCR-UHFFFAOYSA-N 0.000 description 2
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 description 2
- -1 Q-methylstyrene Chemical compound 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 2
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 229920004943 Delrin® Polymers 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical group CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920006163 vinyl copolymer Polymers 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】
本発明は新規な熱可塑性樹脂組成物に関するものである
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel thermoplastic resin composition.
更に詳しくは、塗装性に優れる熱可塑性樹脂組成物に関
するものである。従来、共役ジェン系ゴムー芳香族ビニ
ルーシアン化ビニルからなる重合体（以下Ａ茂樹脂）は
、優れた機械的性質、成形性を有しており、広く応用さ
れている。More specifically, the present invention relates to a thermoplastic resin composition having excellent paintability. BACKGROUND ART Conventionally, a polymer consisting of a conjugated diene-based rubber-aromatic vinyl-vinyl cyanide (hereinafter referred to as A-mo resin) has excellent mechanical properties and moldability, and has been widely applied.
しかし、ＡＢＳ樹脂成形品が屋外で用いられる場合、不
飽和のジェン系ゴム成分が紫外線により劣化するため通
常塗装が施される。However, when an ABS resin molded product is used outdoors, it is usually painted because the unsaturated gene-based rubber component is degraded by ultraviolet rays.
一般にＡＢＳ樹脂は塗料との密着性、シンナーとの親和
性も良く、塗装性プラスチックとしては優れる材料では
あるが、射出成形法にて成形品を得る場合が殆んどであ
り、その結果成形条件によっては成形品に残留歪が残り
やすく、塗装時に残留歪に起因すると思われる塗装不良
、即ち、ストレスクラックが発生しやすい。In general, ABS resin has good adhesion with paint and affinity with thinner, making it an excellent material for paintable plastics, but most molded products are obtained by injection molding, and as a result, molding conditions Depending on the molded product, residual strain tends to remain on the molded product, and coating defects, ie, stress cracks, are likely to occur during painting, which are thought to be caused by the residual strain.
特にこのストレスクラツクの発生は射出時に雛断応力が
大きく作用するゲート付近に発生しやすい。In particular, stress cracks are likely to occur near the gate where a large amount of stress is applied during injection.
本発明者等はこの様なＡ茂樹脂の塗装不良について鋭意
研究した結果、本発明に到達したものである。The present inventors have arrived at the present invention as a result of intensive research into such coating defects of Amo resin.
本発明の目的は塗装性に優れ、かつ耐衝撃性、加工性、
耐熱性に優れる熱可塑性樹脂組成物を提供することにあ
る。The purpose of the present invention is to have excellent paintability, impact resistance, processability,
An object of the present invention is to provide a thermoplastic resin composition having excellent heat resistance.
即ち、本発明はポリアセタール樹脂Ａ、６０〜８０重量
％の芳香族モノビニルと４０〜２の重量％のシアン化ビ
ニルとからなり固有粘度が０．３０〜１．１０である芳
香族モノビニルーシアン化ビニル共重合体Ｂおよび５〜
４５重量％の共役ジェン系ゴムを含む共役ジェン系ゴム
ー芳香族モノビニルーシアン化ビニルグラフト重合体Ｃ
とからなり、Ａ：Ｂ十Ｃが０．１〜５：１００（重量比
）であり、Ｂ：Ｃが５〜９０：５〜９５（重量比）であ
ることを特徴とする塗装性に優れる熱可塑性樹脂組成物
を提供するものである。That is, the present invention provides polyacetal resin A, an aromatic monovinyl cyanide comprising 60 to 80% by weight of aromatic monovinyl and 40 to 2% by weight of vinyl cyanide, and having an inherent viscosity of 0.30 to 1.10. Vinyl copolymer B and 5-
Conjugated Jene Rubber Containing 45% by Weight of Conjugated Jene Rubber - Aromatic Monovinyl Cyanide Vinyl Graft Polymer C
Excellent paintability characterized by having A:B + C of 0.1 to 5:100 (weight ratio) and B:C of 5 to 90:5 to 95 (weight ratio). A thermoplastic resin composition is provided.
以下本発明の熱可塑性樹脂組成物を詳細に説明する。The thermoplastic resin composition of the present invention will be explained in detail below.
本発明において用いられるポリアセタール樹脂Ａとして
は、ポリホルムアルデヒドの均一体である、ポリアセタ
ールホモポリマーおよびエチレンオキサイドとの共重合
体であるポリアセタールコポリマーが挙げられる。Examples of the polyacetal resin A used in the present invention include a polyacetal homopolymer, which is a homogeneous body of polyformaldehyde, and a polyacetal copolymer, which is a copolymer with ethylene oxide.
ポリアセタール樹脂は芳香族ビニルーシアン化ビニル共
重合体Ｂおよび共役ジェン系ゴム−芳香族モノビニルー
シアン化ビニルグラフト重合体Ｃの合計１００重量部当
り０．１〜５重量部必要であり、０．１重量部未満では
、ポリアセタール樹脂の分散が不均一になり塗装時のス
トレスクラックは解決できない。The polyacetal resin is required in an amount of 0.1 to 5 parts by weight per 100 parts by weight of the aromatic vinyl/vinyl cyanide copolymer B and the conjugated gene rubber/aromatic monovinyl/vinyl cyanide graft polymer C, and 0.1 If the amount is less than 1 part by weight, the polyacetal resin will not be dispersed uniformly and stress cracks during painting cannot be solved.
又、５重量部を越えると最終組成物の衝撃強度が低下し
、成形品に層分離が発生し、正常な成形品は得られない
。芳香族モノビニル−シアン化ビニル共重合体Ｂは、６
０〜８の重量％の芳香族モノビニルと４０〜２の重量％
のシアン化ピニルとからなり、固有粘度が０．３〜１．
１０である。If the amount exceeds 5 parts by weight, the impact strength of the final composition decreases, layer separation occurs in the molded product, and a normal molded product cannot be obtained. Aromatic monovinyl-vinyl cyanide copolymer B is 6
0-8 wt% aromatic monovinyl and 40-2 wt%
of pinyl cyanide and has an intrinsic viscosity of 0.3 to 1.
It is 10.
これらの範囲外の共重合体では最終組成物の物性バラン
ス上好ましくない。芳香族モノビニルとしては、スチレ
ン、Ｑ−メチルスチレン、ビニルトルエン、モノクロル
スチレン等、シアン化ビニルとしては、アクリロニトリ
ル、メタクリロニトリル等が挙げられ、それぞれ一種又
は二種以上用いることができる。固有粘度とは、ＤＭＦ
（ジメチルホルムアミド）３０ｏｏにて測定された値を
示す。Copolymers outside these ranges are unfavorable in terms of the balance of physical properties of the final composition. Examples of aromatic monovinyl include styrene, Q-methylstyrene, vinyltoluene, monochlorostyrene, etc., and examples of vinyl cyanide include acrylonitrile, methacrylonitrile, etc., and one or more types of each can be used. Intrinsic viscosity is DMF
(Dimethylformamide) Shows the value measured at 30oo.
共重合体Ｂは、グラフト重合体Ｃ５〜９５重量部に対し
５〜９の重量部であり、５重量部未満では、最終組成物
の加工性が箸く劣り、９の重量部を越えると最終組成物
の機械的性質、特に衝撃強度が低下する。Copolymer B is used in an amount of 5 to 9 parts by weight based on 5 to 95 parts by weight of graft polymer C. If it is less than 5 parts by weight, the processability of the final composition will be poor, and if it exceeds 9 parts by weight, the final composition will be The mechanical properties of the composition, especially the impact strength, are reduced.
さらに好ましくは、２０〜８の重量部である。More preferably, it is 20 to 8 parts by weight.
共役ジェン系ゴムー芳香族モノビニルーシアン化ビニル
グラフト重合体Ｃは、５〜４５重量％の共役ジェン系ゴ
ムを含むグラフト重合体である。共役ジェン系ゴムとし
てはポリブタジェン、スチレンーブタジェン共重合体、
アクリロニトリルーフタジェン共重合体等々が挙げられ
、一種又は二種以上用いることができる。芳香族モノビ
ニルおよびシアン化ビニルとしては、スチレン、Ｑーメ
チルスチレン、ビニルトルェン・モノクロルスチレン等
およびアクリロニトリル、メタクリロニトリル等が挙げ
られ、それぞれ一種又は二種以上用いることができる。Conjugated Jen Rubber-Aromatic Monovinyl Cyanide Vinyl Graft Polymer C is a graft polymer containing 5 to 45% by weight of conjugated Jen rubber. Conjugated diene rubbers include polybutadiene, styrene-butadiene copolymer,
Acrylonitrile rutadine copolymers and the like can be mentioned, and one or more types can be used. Examples of the aromatic monovinyl and vinyl cyanide include styrene, Q-methylstyrene, vinyltoluene/monochlorostyrene, acrylonitrile, methacrylonitrile, etc., and one or more types of each can be used.
グラフト重合体を構成する共役ジェン系ゴムが５重量％
未満であると最終組成物の耐衝撃性が劣り、４５重量％
を越えると加工性が劣り好ましくない。Conjugated gene rubber constituting the graft polymer is 5% by weight
If it is less than 45% by weight, the impact resistance of the final composition will be poor.
Exceeding this is not preferable due to poor workability.
グラフト重合体Ｃに含まれる芳香族モノビニルおよびシ
アン化ビニルの好ましい量としては、それぞれ３０〜７
８％、１７〜３５重量％である。The preferable amounts of aromatic monovinyl and vinyl cyanide contained in the graft polymer C are 30 to 7, respectively.
8% and 17 to 35% by weight.
グラフト重合体Ｃは、共重合体燈５〜９０重量部に対し
５〜９５重量部であり、５重量部未満では共役ジェン系
ゴムを４５％含むグラフト重合体でも最終組成物の衝撃
強度が低下する。９５重量部を越えると共役ジェン系ゴ
ムを５％含むグラフト重合体でも加工性が悪く、又、ポ
リアセタール樹脂の分散が悪くなり衝撃強度まで低下す
る。The amount of the graft polymer C is 5 to 95 parts by weight per 5 to 90 parts by weight of the copolymer light, and if it is less than 5 parts by weight, the impact strength of the final composition will decrease even if the graft polymer contains 45% of conjugated rubber. do. If it exceeds 95 parts by weight, even a graft polymer containing 5% of conjugated gene rubber will have poor processability, and the dispersion of the polyacetal resin will deteriorate, resulting in a decrease in impact strength.
さらに好ましくは２０〜８匹重量部である。More preferably, the amount is 20 to 8 parts by weight.
又、本発明の熱可塑性樹脂組成物は必要に応じて、着色
剤、充填剤、可塑剤等を加えて用いる事も十分可能であ
る。以下に実施例を用いて本発明を具体的に説明するが
本発明は、これらによって何ら制限されるものでない。Furthermore, the thermoplastic resin composition of the present invention may be used with addition of coloring agents, fillers, plasticizers, etc., if necessary. The present invention will be specifically explained below using Examples, but the present invention is not limited to these in any way.
実施例
ポリアセタール樹脂Ａ、共重合体Ｂおよびグラフト重合
体Ｃを表１に示す組成でバンバリーミキサーにより、１
８０午０〜２００℃の温度で５分間混練し、５オンスの
射出成形機にて（２００つ０の成形温度）成形品を得た
。Example Polyacetal resin A, copolymer B and graft polymer C were mixed in a Banbury mixer with the composition shown in Table 1.
The mixture was kneaded for 5 minutes at a temperature of 80° C. to 200° C., and a molded product was obtained using a 5-ounce injection molding machine (molding temperature of 200° C.).
塗装はオリジン電気社製プラネットＰＡを用い、シンナ
ーとして同じく同社製＃２１０シンナー（フオードカッ
プによる粘度９．９妙）を用いて実施した。Painting was carried out using Planet PA manufactured by Origin Electric Co., Ltd., and #210 thinner (viscosity 9.9 mm as measured by a food cup) also manufactured by the same company.
なお、表一１中の数値は重量部を示す。The numerical values in Table 1 indicate parts by weight.
表−２に結果を示す。The results are shown in Table-2.
表−１
ＳＴＹ：スチレン，ｏ−ＳＴＹ：アルフアメチルスチレ
ン、ＡＣＮ：アクリロニトリル、ＰＢＤＥ：ポリプタジ
エン、ＮＢＲ：アクリロニトリルーブタジェン共重合体
デルリン＃５００デュポンファーイースト社製、 ブュ
フコンＭ９０−０２：ポリプラスチックス社製表−２※
フローマーク発生部にストレスクランクが認められ
る。Table-1 STY: Styrene, o-STY: Alphamethylstyrene, ACN: Acrylonitrile, PBDE: Polyptadiene, NBR: Acrylonitrile-butadiene copolymer Delrin #500 manufactured by DuPont Far East, Bufcon M90-02: Polyplastics Table-2*
Stress crank is observed in the area where flow marks occur.
Claims (1)
モノビニルと４０〜２０重量％のシアン化ビニルとから
なり固有粘度が０．３０〜１．１０である芳香族モノビ
ニル−シアン化ビニル共重合体Ｂおよび５〜４５重量％
の共役ジエン系ゴムを含む共役ジエン系ゴム−芳香族モ
ノビニル−シアン化ビニルグラフト重合体Ｃとからなり
、Ａ：Ｂ＋Ｃが０．１〜５：１００（重量比）であり、
Ｂ：Ｃが５〜９０：５〜９５（重量比）であることを特
徴とする塗装性に優れる熱可塑性樹脂組成物。1 Polyacetal resin A, aromatic monovinyl-vinyl cyanide copolymer B comprising 60 to 80% by weight of aromatic monovinyl and 40 to 20% by weight of vinyl cyanide and having an intrinsic viscosity of 0.30 to 1.10. and 5-45% by weight
conjugated diene rubber containing conjugated diene rubber - aromatic monovinyl - vinyl cyanide graft polymer C, A:B + C is 0.1 to 5:100 (weight ratio),
A thermoplastic resin composition with excellent paintability, characterized in that B:C is 5-90:5-95 (weight ratio).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13908678A JPS6010542B2 (en) | 1978-11-10 | 1978-11-10 | Thermoplastic resin composition with excellent paintability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13908678A JPS6010542B2 (en) | 1978-11-10 | 1978-11-10 | Thermoplastic resin composition with excellent paintability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5565247A JPS5565247A (en) | 1980-05-16 |
| JPS6010542B2 true JPS6010542B2 (en) | 1985-03-18 |
Family
ID=15237153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13908678A Expired JPS6010542B2 (en) | 1978-11-10 | 1978-11-10 | Thermoplastic resin composition with excellent paintability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6010542B2 (en) |
-
1978
- 1978-11-10 JP JP13908678A patent/JPS6010542B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5565247A (en) | 1980-05-16 |
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