Kaneka Corporation

Shigeru Hagimori

Naoki Furukawa

Yoshiki Nakagawa

Nao Fujita

Kosuke Tanaka

Akihisa Hirota

Masanao Takeda

Kenichi Kitano

Shigeki Ono

Yoshimichi Yamanaka

Kazuya Yonezawa

Yoshikuni Deguchi

Shun Wachi

Chiho Yoshimi

Yosuke Asai

Keizo Hayashi

Koji Tsuneishi

Syun Wachi

The present invention provides: a process for preparing a vinyl polymer containing a halogen in an amount of 1,000 mg or less per kilogram, in which a vinyl polymer containing the halogen produced by atom transfer radical polymerization of a vinyl monomer is heated at a temperature in the range of 140 to 250&#xb0; C. to dehalogenate the vinyl polymer; a vinyl polymer obtained by the process; and a hydrosilylation-reactive curable composition containing the vinyl polymer.

Process for producing vinyl polymer, vinyl polymer, and curable composition

The present invention provides a method for producing a vinyl polymer including the steps of polymerizing a vinyl monomer by atom transfer radical polymerization with a transition metal complex as a polymerization catalyst, and bringing the resultant vinyl polymer into contact with an adsorbent in the presence of an oxidizing agent; the vinyl polymer produced by the method; and a reactive composition susceptible to hydrosilylation containing the vinyl polymer produced by the method and having at least one alkenyl group per molecule.

Process for producing vinyl polymer

The present invention has for its object to produce an isobutylene polymer having excellent performance characteristics by suppressing side reactions at the polymer growth termini during polymerization. The process of the present invention is to carry out a cationic polymerization of a monomer component containing isobutylene in the presence of a polymerization initiator, a catalyst, an ether compound, and an electron donor. Moreover, the process is to carry out a cationic polymerization of a monomer component containing isobutylene in the presence of a polymerization initiator, a catalyst, an ether compound, and an electron donor, and add a compound having the carbon-carbon unsaturated bond for introducing the carbon-carbon unsaturated bond into the polymer terminus.

Process for producing isobutylene polymers

Hydrosilylation process and polymers produced by the process

Processes for producing polymers having functional groups

Growing community of inventors

Settsu, Japan

Shigeru Hagimori