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:
Jun. 08, 2010
Filed:
Oct. 17, 2005
Robert Cockcroft, Bradford, GB;
Ted Deisenroth, Brookfield, CT (US);
Peter Rohringer, Schönenbuch, CH;
Winfried Steffen, Lörrach, DE;
Robert Cockcroft, Bradford, GB;
Ted Deisenroth, Brookfield, CT (US);
Peter Rohringer, Schönenbuch, CH;
Winfried Steffen, Lörrach, DE;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
The invention relates to a composition comprising a) at least one water-soluble fluorescent whitening agent, b) a polymer formed from an ethylenically unsaturated monomer or monomer blend, characterized in that at least one monomer is acrylamide and the water-soluble polymer has an average (weight average) molecular weight of between 500 and 49,000, optionally, c) polyethylene glycol with a weight average molecular weight of between 500 and 6000 and d) water and the use of the composition for the fluorescent whitening of paper in coating and size press or film press applications.