Warp-free pigment compositions comprising...

Details Warp-free pigment compositions comprising... Warp-free pigment compositions comprising...

C - Chemistry, Metallurgy

09

B

C09B 57/00 (2006.01) C08K 5/3415 (2006.01) C09B 67/22 (2006.01)

Patent

CA 2269587

The invention relates to the use of compounds of the formula (see formula I) R1, R2, R3 and R4 independently of one another are hydrogen, halogen, R6, OR6 or SR6, R5 is hydrogen or linear or branched C1-C12alkyl, benzyl or phenethyl, and R6 is an apolar group which is unsubstituted or substituted one or more times by halogen or by OC1- C6alkyl, with the proviso that if R5 is hydrogen, R1, R2, R3 or R4 is R6, OR6 or SR6, as additives in the pigmentation of partially crystalline plastics, especially those processed by injection moulding, with pigments containing at least one each of groups Image and Image , which are joined to one another as Image or are in conjugation with one another. Preferred pigments are quinacridone pigments, disazo condensation pigments, isoindolinone pigments and pyrrolo[3,4-c]pyrrole pigments, especially pyrrolo[3,4-c]pyrrole pigments. Corresponding formulations and novel compounds are likewise claimed. By these means it is possible to avoid warping.

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