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. 05, 1983
Filed:
Jan. 22, 1982
Applicant:
Inventor:
Wun T Tai, Palos Hills, IL (US);
Assignee:
Nalco Chemical Company, Oak Brook, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
523337 ; 524475 ; 524801 ;
Abstract
Water-in-oil emulsions of copolymers of acrylamide and dimethylaminopropylacrylamide are disclosed. These polymers find use as retention aids in the manufacture of paper and as dewatering agents for municipal and industrial aqueous waste materials. Methods of preparing these polymers are disclosed.