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:
Aug. 25, 1987
Filed:
Mar. 28, 1986
Applicant:
Inventors:
Per E Hansson, Helsingborg, SE;
Felek Jachimowicz, Columbia, MD (US);
Assignee:
W. R. Grace & Co., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
525435 ; 1621643 ; 1621646 ; 525423 ; 525430 ; 528342 ;
Abstract
A product formed by reacting a polymeric polyamidoamine with a low molecular weight polyamine under reactions conditions to cause transamidation and then further reacting the transamidation product with a compound which is polyfunctional with respect to amino groups present in the transamidation product. The resultant material is useful in paper making processes as a retention and drainage aid.