PURPOSE: To obtain a heat-resistant resin having a specified heat distortion temperature by imidizing a methacrylic resin with a cyclohexylamine to incorporate N-cyclohexylglutarimide groups therein.
CONSTITUTION: This resin contains structural units of N-cyclohexylglutarimide groups represented by formula I (wherein R1 and R2 are each H or methyl) in an amount of at least 20mol% and the structural units of N-cyclohexyl (meth) acrylamide groups represented by formula II (wherein R3 is H or methyl), with the total of these two types of units being 30-100mol%, and has a heat distortion temperature of 150°C or higher. Examples of the methacrylic resin used for the production of this resin include a methyl methacrylate homopolymer, a methyl methacrylate/methyl acrylate copolymer and a methyl methacrylate/ styrene copolymer.
MIWA YOSHIYUKI
GOGOTA TADAO
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