Triazinylaminostilbene disulphonic acid mixtures

Details Triazinylaminostilbene disulphonic acid mixtures Triazinylaminostilbene disulphonic acid mixtures

2007-09-18

2007-09-18

Balasubramanian, Venkataraman (Department: 1624)

Compositions

Organic luminescent material containing compositions

Optical brightening compositions

C252S301210, C544S193200, C008S190000, C008S648000

Reexamination Certificate

active

10519031

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.

REFERENCES:
patent: 3132106 (1964-05-01), Villaume
patent: 3272805 (1966-09-01), Häusermann et al.
patent: 3532692 (1970-10-01), Gold et al.
patent: 3895009 (1975-07-01), Fringeli
patent: 4946628 (1990-08-01), Schussler et al.
patent: 2715864 (1977-10-01), None
patent: 0060439 (1982-03-01), None
patent: 96/00220 (1996-01-01), None
patent: WO-98/42685 (1998-10-01), None
Derwent Abstract 1978-09575 for JP 52152932 (1977).

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