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:
Mar. 21, 2023
Filed:
May. 07, 2019
Applicant:
Spcm SA, Andrezieux Boutheon, FR;
Inventors:
Gatien Faucher, Andrezieux Boutheon, FR;
Damien Fougerouse, Andrezieux Boutheon, FR;
René Hund, Andrezieux Boutheon, FR;
Assignee:
SPCM SA, Andrezieux Boutheon, FR;
Primary Examiner:
Int. Cl.
CPC ...
C08F 271/00 (2006.01); D21H 21/18 (2006.01); D21H 17/37 (2006.01); D21H 17/45 (2006.01); D21H 23/04 (2006.01);
U.S. Cl.
CPC ...
D21H 21/18 (2013.01); C08F 271/00 (2013.01); D21H 17/375 (2013.01); D21H 17/455 (2013.01); D21H 23/04 (2013.01);
Abstract
The present invention relates to a complex of polymers and to the use thereof in a method of making paper, cardboard or the like. This complex of polymers is obtained by polymerizing water-soluble monomers: in the presence of a host polymer that comprises vinylamine functions and of a non-polymeric transfer agent, and in the absence of a branching or crosslinking agent of the ethylenic polyfunctional type. It is obtained as from a mass ratio of anionic monomer to water that is greater than 0.035.