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. 31, 2004
Filed:
Apr. 23, 2002
Applicant:
Inventors:
Dieter Reinehr, Kandern, DE;
Hanspeter Sauter, Schopfheim, DE;
Hans Kramer, Frick, CH;
Werner Schreiber, Basel, CH;
Assignee:
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D06L 3/12 ; C11D 3/42 ;
U.S. Cl.
CPC ...
D06L 3/12 ; C11D 3/42 ;
Abstract
The present invention relates to a mixture of fluorescent whitening agents comprising 20 to 70% by weight of a compound of formula (1), 30 to 80% of a compound of formula (2) and 0.1 to 10% of a compound of formula (3), compositions containing the mixture and the user of the compositions for whitening synthetic fibers, in particular, polyester.