THERMOPLASTIC RESIN COMPOSITION AND MOLDED PRODUCT OF THE SAME

• Main Authors: DOI AKIRA, SUGA TAKANORI, SHIMOZAWA TAKU
• Format: Patent
• Language: English; Japanese
• Published: 21.09.2017
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide a thermoplastic resin composition capable of obtaining a molded product excellent in weather resistance, impact resistance and transparency.SOLUTION: There is provided a thermoplastic resin composition which is formed by blending a graft copolymer (B) obtained by graft copolymerization of a vinyl monomer (b) and a vinyl (co) polymer (C) obtained by (co) polymerization of a vinyl monomer (c) containing 80-100 wt.% of an unsaturated carboxylic acid alkyl ester monomer (c1), 0-20 wt.% of a vinyl cyanide monomer (c2) and 0-20 wt.% of an aromatic vinyl monomer (c3), in the presence of an acrylic rubbery polymer (A) obtained by copolymerization of a vinyl monomer (a) containing 70-90 wt.% of an acrylic ester monomer (a1), 10-30 wt.% of an aromatic vinyl monomer (a2) and 0.5-3 wt.% of a polyfunctional vinyl monomer (a3), where 35-75 pts.wt. of the graft copolymer (B) and 25-65 pts.wt. of the vinyl (co) polymer (C) are blended with respect to 100 pts.wt. of the total of the graft copolymer (B) and the vinyl (co) polymer (C).SELECTED DRAWING: None 【課題】耐候性、耐衝撃性および透明性に優れる成形品を得ることのできる熱可塑性樹脂組成物を提供すること。【解決手段】アクリル酸エステル系単量体（ａ１）７０〜９０重量％、芳香族ビニル系単量体（ａ２）１０〜３０重量％、多官能性ビニル系単量体（ａ３）０．５〜３重量％を含むビニル系単量体（ａ）を共重合して得られるアクリル系ゴム質重合体（Ａ）の存在下に、ビニル系単量体（ｂ）をグラフト共重合して得られるグラフト共重合体（Ｂ）と、不飽和カルボン酸アルキルエステル系単量体（ｃ１）８０〜１００重量％、シアン化ビニル系単量体（ｃ２）０〜２０重量％、芳香族ビニル系単量体（ｃ３）０〜２０重量％を含むビニル系単量体（ｃ）を（共）重合して得られるビニル系（共）重合体（Ｃ）を配合してなる熱可塑性樹脂組成物であって、グラフト共重合体（Ｂ）とビニル系（共）重合体（Ｃ）の合計１００重量部に対して、グラフト共重合体（Ｂ）３５〜７５重量部およびビニル系（共）重合体（Ｃ）２５〜６５重量部を配合してなる熱可塑性樹脂組成物。【選択図】なし