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. 22, 2001
Filed:
Aug. 31, 1999
Applicant:
Inventors:
Masato Fujikake, Himeji, JP;
Shigeki Hamamoto, Himeji, JP;
Nobutaka Fujimoto, Himeji, JP;
Kimihiko Kondo, Himeji, JP;
Morio Nakamura, Himeji, JP;
Takao Okada, Kakogawa, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C08F / ; C08K 3/24 ; C08L 3/908 ;
U.S. Cl.
CPC ...
C08F / ; C08F / ; C08F / ; C08K 3/24 ; C08L 3/908 ;
Abstract
A method for producing a highly concentrated aqueous acrylic amide-based polymer dispersion which is inexpensive, good in fluidity and easy to handle is provided. The method comprises polymerizing a water-soluble monomer composition containing an acrylic amide monomer in an aqueous solution of an inorganic salt in the presence of a homopolymer of vinylpyrrolidone and/or a copolymer of vinylpyrrolidone and other monomer(s).