The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 11, 2010
Filed:
Jun. 08, 2005
Eiji Takahashi, Ichihara, JP;
Shoji Yamaguchi, Ichihara, JP;
Eiji Takahashi, Ichihara, JP;
Shoji Yamaguchi, Ichihara, JP;
Nippon Soda Co., Ltd., Tokyo, JP;
Abstract
An anionic polymerizable monomer is added to a reaction system in which an anion species which is incapable of initiating polymerization but may react with polymerization inhibiting substances to convert them into compounds that do not inhibit polymerization is present, and then an anion species capable of initiating polymerization is added thereto. It becomes possible to produce high molecular weight polymers and to precisely control the molecular weight thereof even if polymerization inhibiting substances are present in the system or when polymerization inhibiting substances enter from outside.