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:
Feb. 06, 2001
Filed:
May. 11, 1998
Oliver Eyrisch, Essen, DE;
Clariant Corporation, Frankfurt, DE;
Abstract
The present invention relates to water-insoluble cationized solids obtained by treating solids with cationic homopolymers and/or copolymers comprising allylic and/or vinylic double bonds, where cationization is carried out using nitrogen-containing cationic polymers and/or copolymers which comprise from 0.5 to 100 mol-%, preferably from 5 to 20 mol-%, of said double bonds, based on nitrogen equivalents. The invention relates in particular to cationized solids obtained by cationization with allylated and/or vinylated derivatives of amino-containing polymers and/or copolymers. The invention also embraces the preparation of cationized solids by free-radical crosslinking of the abovementioned cationic polymers and/or copolymers in the presence of solids. The products obtained are in general at least 95% insoluble in water. They are obtained by cationizing mineral materials and, preferably, cellulose and are used preferably as retention aids and/or fixing agents in papermaking.