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:
Jun. 08, 1993
Filed:
Nov. 07, 1988
Applicant:
Inventors:
Richard A Wolf, Midland, MI (US);
John M Warakomski, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
5262181 ; 526217 ; 564251 ;
Abstract
The invention is an improved process for polymerization of vinyl monomers under polymerization conditions with hydrazone initiators at a temperature range of from -10.degree. C. to about 98.degree. C. in the substantial absence of a peroxide to prepare an addition polymer thereof. The process is especially useful for preparation of polymers of acrylic acid, C.sub.1-4 esters of acrylic acid and acrylamide.