Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2005-05-10
2005-05-10
Yoon, Tae H. (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C524S092000, C524S094000, C524S090000, C524S190000, C524S357000, C106S401000
Reexamination Certificate
active
06890977
ABSTRACT:
The invention relates to the use of compounds of the formulaR1, R2, R3and R4independently of one another are hydrogen, halogen, R6, OR6or SR6, R5is hydrogen or linear or branched C1-C12alkyl, benzyl or phenethyl, and R6is an apolar group which is unsubstituted or substituted one or more times by halogen or by OC1-C6alkyl, with the proviso that if R5is hydrogen, R1, R2, R3or R4is R6, OR6or SR6, as additives in the pigmentation of partially crystalline plastics, especially those processed by injection moulding, with pigments containing at least one each of groupswhich are joined to one another asor 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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Bugnon Philippe
Flandrin Franck Rey
Hao Zhimin
Hu Guo-Hua
Ciba Specialty Chemicals Corporation
Stevenson Tyler A.
Yoon Tae H.
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