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Copolymer having improved heat resistance

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专利汇可以提供Copolymer having improved heat resistance专利检索,专利查询,专利分析的服务。并且PURPOSE: A copolymer, prepared by polymerizing methyl methacrylate, an alkyl acrylate, maleic anhydride and styrene in irregular order, and having a specific molecular weight, thermal decomposition index and residual amount of the monomers and improved resistance to heat distortion, thermal decomposition and whitening with water.
CONSTITUTION: A copolymer obtained by copolymerizing 41W97.5mol% methyl methacrylate with 0W5mol% 1W4C alkyl acrylate, 1W26mol% maleic anhydride and 1.5W60mol% styrene, having (1:1.5)W(1:5) molar ratio between the styrene and the maleic anhydride, a molecular structure in which methyl methacrylate units of formula I , alkyl acrylate units of formula II, maleic anhydride units of formula III and styrene units of formula IV are linked in irregular order and 80,000W250,000 molecular weight measured by the gel permeation chromatography, ≤7 thermal decomposition index (α) and ≤0.1wt% residual amount of the maleic anhydride monomer.
COPYRIGHT: (C)1984,JPO&Japio,下面是Copolymer having improved heat resistance专利的具体信息内容。

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