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. 22, 2011
Filed:
Dec. 13, 2006
Hans Johansson-vestin, Kungälv, SE;
Jonas Liesén, Jörlanda, SE;
Marie Turunen, Spekeröd, SE;
Jan Emanuelsson, Stenungsund, SE;
Hans Johansson-Vestin, Kungälv, SE;
Jonas Liesén, Jörlanda, SE;
Marie Turunen, Spekeröd, SE;
Jan Emanuelsson, Stenungsund, SE;
Akzo Nobel N.V., Arnhem, NL;
Abstract
The invention relates to an aqueous dispersion of cellulose-reactive sizing agent containing an acid anhydride, an anionic polyelectrolyte and a nitrogen-containing organic compound which is an amine or quaternary ammonium thereof having a molecular weight less than 180 and/or having one or more hydroxyl groups. The invention further relates to a process for the production of paper which comprises adding the aqueous dispersion of cellulose-reactive sizing agent to an aqueous cellulosic suspension.