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. 29, 1993
Filed:
Sep. 23, 1991
Applicant:
Inventors:
Kathleen A Hughes, Blue Bell, PA (US);
Graham Swift, Blue Bell, PA (US);
Assignee:
Rohm and Haas Company, Philadelphia, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526 93 ; 5263031 ; 526318 ; 526319 ;
Abstract
This invention relates to the use of copper and cobalt ions to control molecular weight in the aqueous polymerization of vinyl monomers. Incorporating catalytic amounts, generally from 1 to about 300 ppm of copper or cobalt ions, in aqueous polymerization reactions initiated with peroxides, preferably with partial neutralization of the monomers, provides for molecular weight control of the resulting polymers.
Hughes, Kathleen. (1993). Molecular weight control in peroxide-initiated aqueous polymerizations (U.S. Patent No. 5223590). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5223590
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile