Migration-free coloured copolycondensates for colouring polymers
US8697792B2 · kind B2 · utility
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7References
21Claims
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Key dates
| Filing date | Sep 15, 2010 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Sep 15, 2030 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P3/006
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to colored and/or fluorescent copolycondensates which are obtained by reaction of colorants substituted by at least two reactive groups which do not interfere with one another, with selected cyclic dicarboxylic acids (especially 1,4-cyclohexanedicarboxylic acid), aliphatic diols (especially ethylene glycol), cyclic diamines (especially isophoronediamine) and/or amino acids in particular amounts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.