Compounds for mass coloration of high temperature polymers
US6355783B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2000 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Sep 7, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0077
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
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 formulaA(B)x  (I)wherex 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, andB 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, R14 and G1 are as defined in the specification.Also claimed are some materials pigmented according to the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.