Bleaching and dyeing; fluid treatment and chemical modification – Dye or potential dye composition – additive – treatment,... – Fluorescent dye – e.g. – stilbene – benzimidazole – benzoxazole,...
Reexamination Certificate
2007-01-05
2008-08-05
Douyon, Lorna M. (Department: 1796)
Bleaching and dyeing; fluid treatment and chemical modification
Dye or potential dye composition, additive, treatment,...
Fluorescent dye, e.g., stilbene, benzimidazole, benzoxazole,...
C008S115510, C008S115600, C008S116100
Reexamination Certificate
active
07407519
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; R1and R1′ independently of each other are —NH—R3, —N(R3)2or —O—R3, wherein R3is aryl substituted by —CO—X—R5, wherein X is O or NH and R5is optionally substituted C1-C4-alkyl, R2is a group of formula —O—R4wherein R4is hydroxy alkyl, alkoxy alkyl or hydroxy alkoxy alkyl,and R2′ has the meaning of R1or R2.
REFERENCES:
patent: 5700295 (1997-12-01), Fuso et al.
patent: 5744599 (1998-04-01), Reinehr et al.
patent: 5800862 (1998-09-01), Kaufmann et al.
patent: 2003/0192137 (2003-10-01), Cuesta et al.
patent: 640899 (1984-01-01), None
patent: 2335570 (1974-01-01), None
patent: 0922699 (1999-06-01), None
patent: 01/19804 (2001-03-01), None
patent: 02/08511 (2002-01-01), None
Chemical Abstract 1984:193483 for CH 640899 (Jan. 1984).
Chemical Abstract 1974-146982 for DE 2335570 (Jan. 1974).
Cuesta Fabienne
Metzger Georges
Ciba Specialty Chemicals Corp.
Douyon Lorna M.
Khan Amina
Stevenson Tyler A.
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