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:
Sep. 18, 2007
Filed:
Jun. 24, 2003
Fabienne Cuesta, Waldighoffen, FR;
Georges Metzger, Moernach, FR;
Roland Naef, Münchenstein, CH;
Peter Rohringer, Schönenbuch, CH;
Rainer Hans Traber, Reinach, CH;
Fabienne Cuesta, Waldighoffen, FR;
Georges Metzger, Moernach, FR;
Roland Naef, Münchenstein, CH;
Peter Rohringer, Schönenbuch, CH;
Rainer Hans Traber, Reinach, CH;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
The present invention relates to a fluorescent whitening agent comprising a mixture of two symmetrically and one asymmetrically substituted triazinylaminostilbene disulphonic acids, novel asymmetrically substituted derivatives, a process for their preparations and use of the mixture for whitening synthetic or natural organic materials, especially paper and for the fluorescent whitening and improvement of sun protection factors of textile materials.