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. 04, 2020
Filed:
May. 30, 2016
Applicant:
Coatex, Genay, FR;
Inventors:
Francois Dupont, Lyons, FR;
Jerome Blanc, Brignais, FR;
Assignee:
COATEX, Genay, FR;
Primary Examiner:
Int. Cl.
CPC ...
D21C 5/02 (2006.01); D21H 21/08 (2006.01); D21H 11/14 (2006.01);
U.S. Cl.
CPC ...
D21C 5/027 (2013.01); D21H 11/14 (2013.01); D21H 21/08 (2013.01);
Abstract
A method for deinking recycled paper, including a pulping step, and then a flotation step, which includes introduction of at least one dispersant of the polyacrylate type, representing from 0.05 to 3.5 wt % of the mineral fillers of the recycled paper. A specific dispersant is used during the flotation step of the method for deinking recycled paper.