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. 12, 1986
Filed:
Jan. 08, 1985
Applicant:
Inventor:
William W Maslanka, Landenburg, PA (US);
Assignee:
Hercules Incorporated, Wilmington, DE (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
525430 ; 524602 ; 524845 ; 525435 ; 528342 ; 528343 ;
Abstract
Disclosed are novel wet strength resins for paper, said resins being derived by reacting an epihalohydrin, such as epichlorohydrin, with a polyamino-copolyamide derived by reacting methylbisaminopropylamine with (a) a diester of oxalic acid and (b) a diester of a saturated dicarboxylic acid containing at least 4 carbon atoms, the mole ratio of (a) to (b) being from about 0.25:1 to about 10:1.