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:
Feb. 25, 1997
Filed:
Dec. 04, 1995
Applicant:
Inventors:
Assignee:
Mitsubishi Rayon Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
524833 ; 524832 ;
Abstract
A particulate vinyl polymer is provided. At least 95 wt. % of its particles have a minor axis A and a major axis B, which are in a relationship of 1.ltoreq.B/A.ltoreq.1.5 and individually range from 30 .mu.m to 400 .mu.m. The polymer has an acid value of from 30 to 150 mgKOH/g. This particulate vinyl polymer is excellent in work-ability such as the solubility in aqueous medium, and is useful as a raw material for water-base coating compositions having superb dispersion of a pigment and excellent waterproofness.