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:
Dec. 23, 2003
Filed:
Dec. 27, 2001
Applicant:
Inventors:
Qu-Ming Gu, Hockessin, DE (US);
Armin Michel, DE Amersfoort, NL;
Huai Nan Cheng, Wilmington, DE (US);
William W. Maslanka, Landenberg, PA (US);
Ronald R. Staib, Wilmington, DE (US);
Assignee:
Hercules Incorporated, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 7/300 ; C08G 6/948 ; C08L 7/700 ; C08L 3/300 ;
U.S. Cl.
CPC ...
C08G 7/300 ; C08G 6/948 ; C08L 7/700 ; C08L 3/300 ;
Abstract
The present invention contemplates poly(aminoamide) pre-polymers, polyamide polymers, a multi-step process for the synthesis of these pre-polymers and polymers using acrylates and at least one monomer containing at least two primary amines, and the resins resulting from the reaction of the polymers with an epihalohydrin. These resins may be used as wet strength resins and creping aids in the papermaking industry as well as surface additives for wool.