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:
Apr. 24, 1979
Filed:
Nov. 01, 1974
Applicant:
Inventors:
Ronald L Friedman, San Rafael, CA (US);
Roger N Lewis, Martinez, CA (US);
Assignee:
Argus Chemical Corporation, Brooklyn, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C08F / ; C08F / ;
U.S. Cl.
CPC ...
526204 ; 526209 ; 526214 ; 526219 ; 526220 ; 526223 ; 526227 ; 526330 ; 526344 ;
Abstract
A process for polymerizing vinyl chloride and for copolymerizing vinyl chloride and up to 30 percent by weight of comonomers in aqueous suspension under heat and pressure in the presence of a mixture of an acyl sulfonyl peroxide and a perester of the formula ##STR1## wherein R.sub.3, R.sub.4, and R.sub.5 are the same or different alkyl groups of from 1 to about 10 carbon atoms provided not more than one of R.sub.3, R.sub.4, and R.sub.5 is methyl, and R is selected from 2,2-dimethyl propyl and straight chain alkyl of 1-5 carbon atoms.