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:
Nov. 16, 1993
Filed:
Dec. 09, 1992
Claude Trouve, Yerres, FR;
Michel Richard, L'Isle Adam, FR;
Paul Mallo, Chatou, FR;
Jean-Yves Anquetil, Saint Denis, FR;
Societe Francaise Hoechst, Puteaux, FR;
Abstract
Cationic copolymers which are insoluble in water based on acrylamide, and a cationic monomer of general formula (I) ##STR1## in which R and R.sub.1, identical or different, represent a hydrogen atom or a methyl group, X represents an oxygen atom or an NH radical and n represents 2 or 3, containing in molar proportions 5 to 30% of cation units and cross-linked with 0.01% to 0.4% in molar proportions relative to the previous monomers of bisacrylamidoacetic acid and with about 0.01% to 0.1% in molar proportions relative to the monomers of bisacrylamidoacetic acid, self-reversible dispersions containing them and use in coating in the paper industry.