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, 2017
Filed:
Jul. 05, 2013
Applicant:
Roquette Freres, Lestrem, FR;
Inventor:
Regis Houze, Tourmignies, FR;
Assignee:
ROQUETTE FRERES, Lestrem, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 21/18 (2006.01); D21H 17/29 (2006.01); D21H 17/56 (2006.01); D21H 17/00 (2006.01); C08L 3/04 (2006.01); C08L 39/02 (2006.01); D21H 17/34 (2006.01);
U.S. Cl.
CPC ...
D21H 21/18 (2013.01); C08L 3/04 (2013.01); C08L 39/02 (2013.01); D21H 17/29 (2013.01); D21H 17/34 (2013.01); D21H 17/56 (2013.01); D21H 17/72 (2013.01);
Abstract
Mixtures of polyvinylamines and of liquid compositions of cationic amylaceous materials having very specific characteristics in terms of dry matter, viscosity, nitrogen content and pH. With such mixtures, it is possible to produce preparations that are particularly effective at increasing the dry strength of paper and cardboard. Also, the use of such mixtures for the production of paper and cardboard, the corresponding production method and the resulting paper and cardboard.