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:
Jun. 02, 1998
Filed:
Dec. 12, 1996
Applicant:
Inventors:
Assignee:
Wako Pure Chemical Industries, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
525100 ; 525479 ; 528 26 ; 528 38 ; 528 22 ; 526279 ;
Abstract
A block copolymer comprising siloxane segments, amphoteric monomer units and/or cationic nonomer units, and if necessary monomer units of precursors thereof, and nonionic monomer units, obtained by polymerization in the presence of a special azo group-containing polysiloxane compound is useful as paint resins, coating resins and base materials for hair cosmetics.