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. 05, 2008
Filed:
Jan. 05, 2007
Georges Metzger, Moernach, FR;
Fabienne Cuesta, Waldighoffen, FR;
Georges Metzger, Moernach, FR;
Fabienne Cuesta, Waldighoffen, FR;
Ciba Specialty Chemicals Corp., Tarrytown, NY (US);
Abstract
A process for improving the sun protection factor (SPF) of cellulosic fibre materials and blends thereof, which comprises contacting said materials with at least one compound of the formula (1) in which M is hydrogen, an alkali metal atom, ammonium or a cation formed from an amine; Rand R' independently of each other are —NH—R, —N(R)or —O—R, wherein Ris aryl substituted by —CO—X—R, wherein X is O or NH and Ris optionally substituted C-C-alkyl, Ris a group of formula —O—Rwherein Ris hydroxy alkyl, alkoxy alkyl or hydroxy alkoxy alkyl,and R′ has the meaning of Ror R.