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:
Mar. 23, 1976
Filed:
Aug. 23, 1971
Applicant:
Inventors:
Leonard Feiler, Riverdale, NY (US);
Sheldon F Gelman, Danbury, CT (US);
Assignee:
Stauffer Chemical Company, Westport, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C08F / ; C08F / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 260 821 ; 260 / ; 260 863 ; 260 871 ; 260 / ; 260 / ; 260 / ; 260 877 ; 260 917 ; 260 / ; 260 / ; 260879 ;
Abstract
Vinyl halide polymers, preferably polyvinyl chloride, which exhibit improved processing characteristics without sacrificing physical properties are prepared by partially polymerizing vinyl halide monomer at a first reaction temperature and then changing the reaction temperature and continuing the polymerization at a second temperature conducive to forming a polymer of an average molecular weight range different from that obtainable at the first reaction temperature. The product provides the physical characteristics of polymer blends but can be processed without formation of fish eyes.