Mitsubishi Rayon Company, Limited

Hiroyuki Nogami

Ryuichi Ansai

Kuniyoshi Ogura

Keiichi Sakashita

Tetsuya Noda

Fuminori Nakaya

Takafumi Asai

An object of the invention is to provide a molding with suppressed coloring which has good weather resistance and in which the advantageous effect does not decrease with time. The present invention provides a molding material comprising a polymer (A) obtained by polymerizing 0.01 to 35 mol % of monomer (a1) represented by a specified formula (1) and 65 to 99.99 mol % of monomer (a2) whose main component is methylmethacrylate.

Molding material and molding

Disclosed is a method for producing a (meth)acrylate ester wherein a high purity (meth)acrylate ester is obtained with a high yield, with a reduced loss of (meth)acrylic acid anhydride. In the method, (meth)acrylic acid is recovered with a high yield, and the (meth)acrylate ester is purified easily. Specifically disclosed is a method for producing a (meth)acrylate ester which comprises: (1) a step of producing (meth)acrylic acid anhydride by reacting a specific fatty acid anhydride and (meth)acrylic acid, while removing a by-produced fatty acid; (2) a step of obtaining a (meth)acrylate ester by reacting an alcohol and unpurified (meth)acrylic acid anhydride obtained in step (1) preferably at a temperature not less than 90&#xb0; C.; and (3) a step of recovering (meth)acrylic acid by distillation preferably at a temperature not less than 90&#xb0; C. The method may also comprise a step of heating or distilling the reaction liquid obtained in step (2) at a temperature not less than 90&#xb0; C.

Method for producing a (meth)acrylate

It is an object of the present invention to provide a method for producing (meth)acrylic anhydride that provides high yield and high efficiency and can suppress side reactions, in a method for reacting (meth)acrylic acid with a fatty acid anhydride to produce (meth)acrylic anhydride. The method for producing (meth)acrylic anhydride according to the present invention is a method for producing (meth)acrylic anhydride, including reacting a fatty acid anhydride with (meth)acrylic acid to produce (meth)acrylic anhydride, while extracting a fatty acid produced as a by-product, wherein the reaction is performed, while adjustment is performed so that a molar ratio of the (meth)acrylic acid to the (meth)acrylic anhydride in a reaction liquid is 0.3 or more.

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Otake, Japan

Hiroyuki Nogami