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. 20, 1976
Filed:
Aug. 31, 1973
Applicant:
Inventors:
Nathan D Field, Allentown, PA (US);
Earl P Williams, Pen Argyl, PA (US);
Assignee:
GAF Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526260 ; 252-1 ; 260 296 ; 260 / ; 260 / ; 260 / ; 260 8073 ; 526264 ; 526304 ; 526347 ;
Abstract
An interpolymer useful in the thickening of aqueous acids comprising (A) about 20 to about 99.0 mole % acrylamide or N-vinyllactam, (B) about 0.5 to about 10 mole % long-chain containing vinyl monomer derivatives having the formula: ##EQU1## wherein Y represents hydrogen, halogen, lower alkyl or phenyl