Triazinylaminostilbene compounds

Details Triazinylaminostilbene compounds Triazinylaminostilbene compounds

1998-05-19

2000-11-28

Kopec, Mark

Compositions

Organic luminescent material containing compositions

Optical brightening compositions

25230121, 5441932, 8919, 8119, C11D 342, C09K 1106, C07D25100, D21H 2132

Patent

active

061531227

ABSTRACT:
The present invention provides a hydrate of the 4,4'-di-triazinylamino-2,2'-di-sulfostilbene compound having the formula: ##STR1## in which M and M.sub.1 independently represent hydrogen, an alkaline-, an alkaline earth metal or ammonium, x is a number within the range of from 1 to 30, and the crystal form of the hydrate (I) being characterized by an X-ray diffraction pattern which is essentially as set out in the accompanying FIGS. 1 to 11; or a mixture containing one or more of the hydrates of the 4,4'-di-triazinylamino-2,2'-di-sulfostilbene compound having the formula (I); processes for the preparation of the new hydrates; and the use of the new hydrates for the preparation of concentrated aqueous formulations of fluorescent whitening agents.

REFERENCES:
patent: 3925260 (1975-12-01), Tscharner et al.
patent: 4271036 (1981-06-01), Uhl et al.
patent: 4326982 (1982-04-01), Neumann et al.
patent: 4866152 (1989-09-01), Lo
patent: 5076968 (1991-12-01), Fringeli et al.
patent: 5437818 (1995-08-01), Ehlis et al.

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