Copolymerized methine colorant-polyester color concentrates
US5106942A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1990 |
| Grant date | Apr 21, 1992 |
| Priority date | — |
| Expiry date | Jan 8, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B69/105
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclose are polyester color concentrates, especially amorphous and partially-crystalline, polyester color concentrates, comprising a polyester having copolymerized therein colored residues of at least one polyester-reactive, thermally-stable methine colorant compound. The color concentrates may be used to impart yellow shades and colors to various polymeric materials, shaped articles fabricated of and coatings formulated from such polymeric materials and, especially, personal, medical and home care products where non-extractability of the colorant material is essential. Also disclosed are colored semicrystalline powders derived from the color concentrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.