Fluorescent whitening agent, its preparation and use

Details Fluorescent whitening agent, its preparation and use Fluorescent whitening agent, its preparation and use

2000-01-28

2000-12-26

Gupta, Yogendra

Cleaning compositions for solid surfaces, auxiliary compositions

Auxiliary compositions for cleaning, or processes of preparing

Textile softening or antistatic composition

510518, 510461, 25230121, 25230123, C09K 1106, C11D 300, C11D 1500, D06L 300

Patent

active

061659738

ABSTRACT:
A fluorescent whitening agent comprising a mixture of compounds of the formulae Ia, Ib and Ic: ##STR1## in which the --SO.sub.3 R groups are in the meta and/or para position, and wherein R and M, independently of each other are H, Na, Li, K, Ca, Mg, ammonium, or ammonium that is mono-, di-, tri- or tetra-substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 -hydroxyalkyl or a mixture thereof, a process for its preparation and its use to brighten paper and especially textile materials.

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patent: 4388079 (1983-06-01), Suzuki et al.
patent: 4468341 (1984-08-01), Beyer
patent: 5051111 (1991-09-01), Anceschi et al.
patent: 5688758 (1997-11-01), Reinehr et al.
patent: 5800862 (1998-09-01), Kaufman et al.

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