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:
Dec. 29, 1992
Filed:
Jan. 31, 1991
Applicant:
Inventors:
Stephen R Betso, Midland, MI (US);
Duane F Foye, Merrill, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526193 ; 526195 ; 526210 ; 526213 ; 526216 ; 526233 ; 526234 ; 5263294 ;
Abstract
The present invention is a polymer composition comprising vinylidene chloride with improved thermal stability. The process comprises either advance addition or polymer slurry addition of a salt of a non-alkenic weak acid during the polymerization of the vinylidene chloride. The polymeric composition comprises a reaction product of a salt of a nonalkenic weak acid in an amount effective to provide improved thermal stability to the polymeric composition. In a preferred embodiment, the present invention further comprises adding a salt of a carboxylic acid to the polymer slurry.