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:
Sep. 20, 1994
Filed:
Jan. 11, 1993
Applicant:
Inventors:
Peter T Trzasko, Plainsboro, NJ (US);
Michael T Philbin, Plainsboro, NJ (US);
Assignee:
National Starch and Chemical Investment Holding Corporation, Bridgewater, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07H / ; C08B / ; C08B / ;
U.S. Cl.
CPC ...
564291 ; 162158 ; 1621646 ; 162175 ; 162176 ; 162177 ; 536 187 ; 536 30 ; 536 43 ; 536 45 ; 536 50 ; 536 52 ; 536 54 ; 536 55 ; 536 551 ; 536 552 ; 536 553 ; 536123 ; 536124 ; 544374 ; 5483137 ; 5483381 ; 5483401 ; 564292 ;
Abstract
Cationic polysaccharide derivatives are prepared by reacting a polysaccharide with a polycationic reagent having one polysaccharide reactive group and at least two cationic groups. Suitable reagents include polycationic alkyl, aryl, alkaryl, cycloaliphatic, or heterocyclic amines, some of which are novel compositions. The polycationic polysaccharide derivatives prepared from these reagents are useful in the manufacture of paper.