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:
Oct. 14, 2014
Filed:
Apr. 05, 2006
Applicants:
Andrew Clive Jackson, Harrogate, GB;
Alec Stewart Tindal, Leeds, GB;
Mariela Gauto, Leeds, GB;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 5/22 (2006.01); C09D 131/04 (2006.01); C09D 129/04 (2006.01); D21H 19/36 (2006.01); D21H 19/44 (2006.01); D21H 19/46 (2006.01); D21H 19/60 (2006.01); C08L 29/04 (2006.01); C08K 5/16 (2006.01); C08K 5/34 (2006.01); C08K 5/3432 (2006.01); C08K 5/3467 (2006.01); C08K 5/3477 (2006.01); C08K 5/3492 (2006.01); C08K 5/36 (2006.01); C08K 5/41 (2006.01); D21H 21/30 (2006.01);
U.S. Cl.
CPC ...
D21H 21/30 (2013.01); D21H 19/46 (2013.01);
Abstract
The instant invention relates to storage stable aqueous solutions of stilbene optical brighteners with polyvinyl alcohols which can be directly used by the papermaker in that they may be diluted with water and/or be metered directly into a coating composition, to provide coated papers of a particularly high whiteness.