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. 11, 2014
Filed:
Dec. 22, 2010
Stefan Sommer, Leverkusen, DE;
Erhard Luehmann, Bomlitz, DE;
Serkan Unal, Pittsburgh, PA (US);
Micheal J. Dvorchak, Monroeville, PA (US);
Stefan Sommer, Leverkusen, DE;
Erhard Luehmann, Bomlitz, DE;
Serkan Unal, Pittsburgh, PA (US);
Micheal J. Dvorchak, Monroeville, PA (US);
Bayer MaterialScience LLC, Pittsburgh, PA (US);
Bayer MaterialScience AG, Leverkusen, DE;
Abstract
The present invention relates to a process for the production of sized and/or wet-strength papers, paperboards or cardboards, wherein an aqueous radiation-curable dispersion containing water and at least one polymer, characterized in that the polymer contains cationic groups, is mixed with suspended wood pulp and/or chemical pulp and this mixture is sieved, pressed, thermally dried and then radiation-cured, characterized in that the dispersion is employed in amounts, based on its non-aqueous content in relation to the solid content of the wood pulp and/or chemical pulp, of from 0.001 to 10 wt. %, the papers, paperboards and cardboards produced by this process, and compositions comprising suspended wood pulp and/or chemical pulp and an aqueous radiation-curable dispersion containing at least one polymer, characterized in that the polymer contains cationic groups.