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:
Dec. 11, 2007
Filed:
Apr. 26, 1999
Applicants:
Hans Hällström, Nacka, SE;
Rein Sikkar, Floda, SE;
Oliver Struck, Düren, DE;
Inventors:
Assignee:
Akzo Nobel NV, Arnhem, NL;
Primary Examiner:
Int. Cl.
CPC ...
D21H 17/45 (2006.01); D21H 17/37 (2006.01); C08F 220/56 (2006.01); D12H 21/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for the production of paper from a suspension containing cellulosic fibres, and optional fillers, comprising adding to the suspension drainage and retention aids comprising a cationic organic polymer and anionic microparticulate material, forming and dewatering the suspension on a wire, wherein the cationic organic polymer has a non-aromatic hydrophobic group. The invention further relates to a cationic vinyl addition polymer comprising in polymerized form at least one non-cationic monomer having a non-aromatic hydrophobic group and at least one cationic monomer.