Ciba Specialty Chemicals Corporation

Rolf Tittmann

Gerhard Reinert

Francesco Fuso

Hans Peter Harri

Ruth Roth

The invention relates to a coating having a thickness of from 5 to 25 &#x3bc;m, comprising a high-molecular-weight organic material and from 5 to 9 g/mcolored pigments, wherein, based on the total amount of colored pigments, (a) from 30 to 90% by weight of 3,6-di(4'-biphenyl)-2,5-dihydro-pyrrolo[3,4-c]-pyrrole-1,4-dione having a specific surface area of from 20 to 50 m/g and (b) from 10 to 70% by weight of a further organic colored pigment, selected from the series consisting of quinacridone, diketo-pyrrolo[3,4-c]-pyrrole, dioxazine, indanthrone, perylene, phthalocyanine and 3-amino-1H-isoindol-1-one-oximatometal complex pigments and solid solutions and mixtures thereof, are present.

Opaque, colour-pigmented coating

A description is given of novel stabilizer mixtures comprising at least one compound of the formula ##STR1## and at least one compound of the formula ##STR2## in which the variables are as defined in the claims. The novel stabilizer mixtures are suitable for stabilizing organic material, especially textile fiber materials, against damage by light, oxygen and heat.

Stabilizer combination

A description is given of novel stabilizer mixtures comprising at least one compound of the formula ##STR1## and at least one compound of the formula ##STR2## in which the variables are as defined in the claims. The novel stabilizer mixtures are suitable for stabilizing organic material, especially textile fibre materials, against damage by light, oxygen and heat.

There is described a process for the preparation of basic poIycondensates, which comprises (a) reacting an amine of formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another hydrogen or alkyl which is unsubstituted or substituted by amino, hydroxy, cyano or C.sub.1 -C.sub.4 alkoxy, and A is alkylene which may be substituted or interrupted by one or more than one hetero atom, with an ammonium salt in the presence of an anhydrous solvent, and (b) reacting the protonised product obtained according to (a) with a cyanamide at elevated temperature. The polycondensates or salts thereof prepared according to this process are particularly suitable aftertreatment agents for enhancing the wetfastness properties of dyed or printed textile material.

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Lorrach, Germany

Rolf Tittmann