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:
Nov. 17, 1992
Filed:
Aug. 02, 1991
Applicant:
Inventors:
Shiro Kobayashi, Kawauchi Juutaku, Kawauchi Mubanchi, Sendai-shi, Miyagi 980, JP;
Hiroshi Uyama, Tagajo, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528408 ; 528424 ; 528398 ; 528378 ;
Abstract
A polyfunctional polymerization initiator suitable to cationic ring-opening polymerization of heterocyclic monomers, having at least one carbon atom bonded directly to a carbon-carbon double bond in a linear or cyclic organic group and, further, having at least two following groups containing the above said carbon atoms and represented by the general formula: