Nippon Oil Fats Co., Ltd.

Kazuyoshi Aoshima

Kenji Kato

Masato Yoshida

Michio Kobayashi

Yasumi Koinuma

Hideo Sawada

Yukinori Haruta

Yuji Okada

Kazunori Doiuchi

Hidehiko Hagii

The maleimide copolymer of the invention is of the class of N-substituted maleimide copolymer such as N-alkyl or N-aromatic maleimide copolymer having peroxy bonds in a molecule, utilizable as a precursor for preparing a maleimide block copolymer and as a modifier for other resins. The maleimide block copolymer, which is useful as a molding material or a thermal resistance improver, is obtained by polymerizing maleimide monomers in the presence of a polymeric peroxide followed by polymerizing vinyl monomers.

Maleimide copolymer, maleimide block copolymer and method for producing

A random copolymer comprising specific groups represented by the general formula: ##STR1## and specific peroxycarbonate structural units represented by the general formula: ##STR2## is produced by a method which comprises causing a compound of the formula: ##STR3## to react with a compound of the formula: ##STR4##

Peroxycarbonate group-containing copolymer and method for manufacture

A fluorine-containing aromatic derivative is produced by causing a di(haloacyl)peroxide to react upon benzene, a mono-substituted benzene, naphthalene, or a mono-substituted naphthalene thereby introducing an X(CF.sub.2).sub.n -group into the benzene ring or the naphthalene ring.

Method for production of fluorine-containing aromatic derivative

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Aichi, Japan

Kazuyoshi Aoshima