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:
Jul. 02, 1985
Filed:
Jun. 20, 1984
Applicant:
Inventor:
Chin C Hsu, Avon Lake, OH (US);
Assignee:
The B. F. Goodrich Company, Akron, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C08F / ; C08F / ;
U.S. Cl.
CPC ...
524724 ; 524762 ; 524853 ; 524854 ; 526209 ; 52623823 ; 526317 ;
Abstract
A process for polymerizing olefinically unsaturated carboxylic acids containing at least one activated carbon-to-carbon olefinic double bond and at least one carboxyl group in benzene in the presence of block copolymers of propylene oxide and ethylene oxides having molecular weights in the range of greater than about 1600 to about 20,000, resulting in improved yields of carboxyl-containing polymers, such as cross-linked polyacrylic acid as shown by an increase in total solids of the benzene slurry of about 50 percent, the polymers obtained at this higher total solids having increased bulk density.