Asahi Kasei Kogyo Kabushiki Kaisha

Masaharu Horikawa

Jiro Kurita

Takeaki Abe

A process for preparing arcylate polymers comprising subjecting to suspension-polymerization a system (I) comprising an alkyl ester of methacrylic acid, said system (I) optionally containing an alkyl ester of acrylic acid and other vinyl monomer copolymerizable with said esters, to obtain a suspension containing polymer beads; and adding to the resulting suspension an aqueous suspension of a system (II) comprising an alkyl ester of acrylic acid and a cross-linking monomer, said system (II) optionally containing an alkyl ester of methacrylic acid and being employed in an amount of 20 to 70 parts by weight per 100 parts by weight of said system (I), under agitation at a temperature allowing substantial advance of polymerization to effect a final polymerization. The polymers obtained by the process are excellent in both the weather resistance and impact resistance, which are suitable for formation of molded products having excellent properties, especially, suitable for formation of films having a beautiful lustrous surface and excellent mechanical properties.

Growing community of inventors

Ayase, Japan

Masaharu Horikawa