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    • 9. 发明公开
    • COMPOSITIONS RESISTANTES AU CHOC A BASE DE (CO)POLYMERE METHACRYLIQUE THERMOPLASTIQUE
    • 组合物抵抗所有CHOC A BASE DE(CO)多元醇甲基丙烯酸酯热塑性
    • EP1255788A1
    • 2002-11-13
    • EP01904016.1
    • 2001-01-26
    • Atofina
    • GAILLARD, PatriceHEIM, PhilippeMEUNIER, GillesVUILLEMIN, Bruno
    • C08L33/12
    • C08L33/12C08L2666/24
    • The invention concerns thermoplastic impact-resistant compositions comprising (A) a thermoplastic methacrylic polymer or copolymer (P) including for the major part methyl methacrylate units, (B) at least an impact resistance enhancing additive and at least a grafted elastomeric polymer (C) bearing thermoplastic methacrylic (co)polymer groups (P) grafted at least in pendant position on an elastomeric copolymer (C°), said elastomeric copolymer (C°) being obtained from (i) at least a vinylaromatic monomer (C1), (ii) at least a monomer (C2) selected among the C¿1?-C15 linear or branched alkyl acrylates, alkoxyalkyl acrylates wherein the alkyl group(s) have 1 to 4 carbon atoms and aralkyl acrylates wherein the alkyl group(s) has/have 1 to 15 carbon atoms and/or at least a diene monomer (C?3¿) and (iii) optionally at least an ethylenically unsaturated monomer (C4) with pendant initiator function(s), said monomer(s) (C4) being necessary in the absence of monomer (C3), said grafted elastomeric copolymer (C) being dispersed in the matrix (A) in the form of nodules 10 to 500 nm in size capable of having a droplet, capsule-type single-inclusion and/or salami-type multiple inclusion morphology.
    • (A)热塑性甲基丙烯酸类聚合物或共聚物(P),其主要部分包括甲基丙烯酸甲酯单元,(B)至少一种抗冲击强化添加剂和至少一种接枝弹性体聚合物(C) 所述弹性共聚物(C 0)由至少一种乙烯基芳族单体(C 1),(ii)至少一种乙烯基芳族单体(C 1),(ii)至少一种乙烯基芳族单体 )至少一种选自C 1 -C 15直链或支链烷基丙烯酸酯,烷氧基烷基丙烯酸酯(其中烷基具有1至4个碳原子)和芳烷基丙烯酸酯(其中烷基具有1至4个碳原子) (C4)具有1-15个碳原子和/或至少一个二烯单体(C3-8)和(iii)任选至少一种具有侧接引发剂官能团的烯属不饱和单体(C4) 在没有单体(C3)时是必要的,所述接枝弹性体 (C)以10-500nm大小的结节形式分散在基质(A)中,所述结节能够具有液滴,胶囊型单夹杂物和/或萨拉米勒型多重包涵体形态。