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:
May. 19, 2015
Filed:
Apr. 30, 2013
Hercules Incorporated, Wilmington, DE (US);
Joseph M. Mahoney, Newark, DE (US);
Frank J. Sutman, Wilmington, DE (US);
Solenis Technologies, L.P., , CH;
Abstract
Disclosed are methods for increasing the filler content of paper or paperboard, comprising (a) combining a heterogeneous polymer blend with a ground calcium carbonate filler; (b) combining the resulting mixture with a pulp slurry; and (c) processing the resulting slurry mixture to form a sheet of paper or paperboard. Also disclosed are methods of increasing the filler content of paper or paperboard comprising (1) combining either a heterogeneous polymer blend or a ground calcium carbonate filler with a pulp slurry, (2) combining the remaining component with the pulp slurry; and (c) processing the resulting pulp slurry mixture to form a sheet of paper or paperboard.