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. 07, 1996
Filed:
Jun. 30, 1994
Applicant:
Inventors:
Yoichi Ozawa, Tokyo, JP;
Ryota Fujio, Tokyo, JP;
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
525279 ; 525247 ; 525299 ; 525309 ;
Abstract
A block copolymer containing a non-polar polymer block and a polar polymer block was prepared by using an anionic polymerization initiator, by reacting an organic compound which can form an ate complex at the active end of the non-polar polymer block, the compound which contains a main group element of II or III group, before the addition of the polar monomer.