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. 29, 2000
Filed:
Sep. 18, 1997
Applicant:
Inventors:
John Oliver Stockwell, West Yorkshire, GB;
Timothy Guy Bingham, Stockport, GB;
Howard Roger Dungworth, Halifax, GB;
Assignee:
Ciba Specialty Chemicals Water Treatments Limited, Bradford, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
524555 ; 524556 ; 524558 ; 524560 ; 524561 ; 524562 ; 524812 ; 524820 ; 524823 ; 524824 ;
Abstract
Flexographic or other printed paper is deinked by a process which comprises pulping in the presence of an emulsion of crosslinked, insoluble, ionisable and swellable polymer particles. The emulsion preferably provides a viscosity (at 3%) in the ionised state of below 50,000 cps (Brookfiled RVT) and is novel.