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:
Aug. 22, 2006
Filed:
Jan. 30, 2004
Applicants:
Tapio Vihervaara, Turku, FI;
Kari Luukkonen, Raisio, FI;
Veikko Niinivaara, Raisio, FI;
Inventors:
Assignee:
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 17/29 (2006.01);
U.S. Cl.
CPC ...
Abstract
The object of the invention is an additive for paper making by means of which the dusting tendency of paper can be reduced. The agent is based on starch, the molecular size of which has been reduced, and which has been cationized to a charge of less than 1.5 meq/g with a quaternary nitrogen compound. The agent is added to the fiber pulp for paper making prior to web formation.