Ciba Specialty Chemicals Corporation

Basf Se Corporation

Hunstman International LLC

Huntsman Advanced Materials LLC

Serge Schroeder

Josef Zelger

Andreas Burkhard

Gerhard Merkle

Bernard Schultz

J&uuml;rgen Kaschig

Serge Gruetter

Andrea Frey

The present invention relates to an aqueous dispersion containing (a) a fluorescent whitening agent, (b) a dispersing agent, (c) a &#x3b2;-1,3-glucan and, optionally, (d) a vat dye and the use of the aqueous dispersions for whitening synthetic fibers, in particular polyester and polyacrylonitrile.

Formulations of fluorescent whitening agents in dispersed form

The present invention relates to a storage-stable fluorescent whitener formulation, comprising a compound of formula 1, a process for their preparation and their use. 

Storage-stable fluorescent whitener formulations

A liquid fluorescent whitening agent formulation comprising: a) a compound of formula (1), in which R represents hydrogen, 1-5 C-alkyl, 1-5 C-alkoxy or halogen, M represents hydrogen, an alkaline- or alkaline earth-metal, or ammonium; b) a polyhydroxy compound; c) 5 to 95% water, whereby the ratio of the compound of Formula (1) to the polyhydroxy compound is between 10:90 and 90:10 parts by weight and the total weight of these compounds in the formulation is between 5 and 95% and, optionally, auxiliary stabilizing agents and the use thereof for the manufacture of detergents with improved shade consistency.

Fluorescent whitening agent formulation for detergents

There is provided a white crystal form of the compound having the formula: ##STR1## whose crystal form is characterised by an X-ray diffraction diagram which is essentially as shown in Table I, II or III. Also provided is a formulation comprising from 10 to 85% by weight of the white crystal form of compound having the formula (1) and from 90 to 15% by weight of a polyhydroxy compound, preferably glycerine.

Fluorescent whitening agent

The present invention provides an anhydrous fluorescent whitening agent formulation comprising: a) 5 to 60, preferably 15 to 45% by weight of a fluorescent whitening agent or a mixture thereof; b) 0 to 10, preferably 0 to 2% by weight of a stabiliser or a mixture thereof; c) 0 to 10, preferably 0.5 to 2% by weight of a dispersant or a mixture thereof; d) 0 to 10, preferably 0.5 to 2% by weight of an auxiliary or a mixture thereof; and e) an anhydrous dispersion medium or a mixture thereof to make up 100% by weight, each based on the total weight of the formulation. The formulation is useful for the preparation of detergents.

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Rosenau, France

Serge Schroeder