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. 12, 1991
Filed:
Nov. 23, 1990
Applicant:
Inventors:
Fumio Suzuki, Ohtake, JP;
Hideaki Habara, Ohtake, JP;
Yutaro Fukuda, Ohtake, JP;
Haruki Sato, Ohtake, JP;
Hiromasa Inada, Ohtake, JP;
Assignee:
Mitsubishi Rayon Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
528491 ; 528497 ; 528498 ; 523335 ; 523336 ; 524157 ; 524503 ;
Abstract
The invention discloses a process for the production of a particulate polymer which contains few fine particles and has a narrow particle size distribution and a controlled bulk specific gravity. Characteristic features of the process of this invention reside in that a polymer latex obtained by emulsion polymerization is successively processed through the following steps (I) and (II):