Hoechst Aktiengesellschaft

Cassella Aktiengesellschaft

Hoechst Gmbh

Herbert Friedrich

Thomas Martini

Bernhard Mees

Friedrich Engelhardt

Erich Schinzel

Rainer Kupfer

Karl Hintermeier

Hans Frischkorn

Heinz Probst

Gunther Siebott

Michael Bildhauer

Richard Gruber

Copolymers based on ethylenically unsaturated dicarboxylic anhydrides, long-chain olefins and fluoroolefins Copolymers containing 10 to 60% by weight of bivalent structural units of the formula A ##STR1## wherein R.sup.1 and R.sup.2, independently of one another, are hydrogen or C.sub.1 -C.sub.6 -alkyl, a and b are zero or one and a+b is one, X and Y are identical or different and are the group --N--HR.sup.3, where R.sup.3 is C.sub.1 -C.sub.40 -alkyl, C.sub.3 -C.sub.40 -alkenyl, C.sub.5 -C.sub.20 -cycloalkyl or C.sub.6 -C.sub.18 -aryl, the group --N--(R.sup.3).sub.2, where R.sup.3 are identical or different and have the abovementioned meaning, and/or the group --O--R.sup.4, where R.sup.4 is hydrogen, an alkali metal cation, one equivalent of an alkaline earth metal ion, a cation of the formula H.sub.2 N.sup..sym. (R.sup.3).sub.2 or H.sub.3 N.sup..sym. R.sup.3, C.sub.1 -C.sub.40 -alkyl, C.sub.5 -C.sub.20 -cycloalkyl or C.sub.6 -C.sub.18 -aryl, 30 to 89% by weight of bivalent structural units of the formula B ##STR2## wherein R.sup.5 is hydrogen or C.sub.1 -C.sub.4 -alkyl and R.sub.6 is C.sub.6 -C.sub.40 -alkyl or C.sub.6 -C.sub.18 -aryl, and 1 to 20% by weight of bivalent structural units of the formula C ##STR3## wherein n is a number from 6 to 24. The invention also relates to a process for the preparation of these copolymers and to the utilization thereof.

Copolymers based on ethylenically unsaturated dicarboxylic anhydrides,

Salts of copolymers of ethylenically unsaturated carboxylic acids and ethylenically unsaturated fatty acid derivatives.

Salts of copolymers of ethylenically unsaturated carboxylic acids and

Mixtures of optical brighteners consisting of 1 to 60% by weight of a brightener from the bisbenzoxazolylnaphthalene series and 99 to 40% by weight of one or more brighteners of the formulae 2 to 10 listed in the description.

Mixtures of optical brighteners and their use

The formulation for brightening synthetic fibers or mixtures of synthetic fibers and natural fibers, which is an aqueous dispersion comprising at least one finely divided optical brightener and a dispersing agent, wherein the improvement comprises the dispersing agent being a water-soluble or water-dispersible polyester containing at least one phosphonic acid ester moiety.

Formulation for brightening synthetic fibers and its preparation and use

Growing community of inventors

Heusenstamm, Germany

Herbert Friedrich