41802-13-5Relevant articles and documents
Compounds for mass coloration of high temperature polymers
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Example A2, (2008/06/13)
The invention relates to novel soluble pigment precursors possessing not only higher thermal stability but also improved solubility characteristics and to a process for mass coloration of high temperature polymers that utilizes these novel soluble pigment precursors. The pigment precursors of the invention are essentially of the formula A(B)x??(I) where x is an integer from 1 to 8, A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, indanthrone, isoindolinone, isoindoline, dioxazine, azo, phthalocyanine or diketopyrrolopyrrole series, this radical being linked with xB groups via one or more heteroatoms, these heteroatoms being selected from the group consisting of N, O and S and forming part of the radical A, and B is hydrogen or a group of the formula although at least one B group is not hydrogen and when x is from 2 to 8 the B groups may be identical or different. E1, E2, R1, R2, R3, R4, R7, R11, R14and G1are as defined in the specification. Also claimed are some materials pigmented according to the invention.