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. 10, 1981
Filed:
Sep. 24, 1979
Applicant:
Inventors:
Shizuo Narisawa, Ichihara, JP;
Takeo Oyamada, Ichihara, JP;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526273 ; 156327 ; 260 / ; 526200 ; 526209 ; 526322 ; 526323 ; 526324 ; 526922 ;
Abstract
An improved process for producing an aqueous emulsion of a vinyl chloride/vinyl ester/ethylene copolymer having a small heat fluidity and excellent strength which comprises continuously adding a solution of a specific polybasic acid polyallyl ester in the vinyl chloride and/or vinyl ester and further at least 60% by weight of the vinyl chloride and vinyl ester to the polymerization system during the polymerization reaction. The copolymer thus produced has a large benzene-insoluble part and the aqueous emulsion thereof is stable and is useful as an adhesive, as for paint compositions, or as a binder for fibers and papers.