Polyesters containing copolymerized substituted 1,4-bis(2,6-dialkylanilino)-9, 10-anthraquinones as colorants
US5962557A · kind A · utility
13Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1997 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Aug 7, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L101/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A colored polyester copolymer comprising the reaction product of at least one linear thermoplastic polyester precursor and at least ten parts per million by weight of a residue of at least one 1,4-bis (2,6-dialkylanilino)-9,10-anthraquinone colorant. A composition may be formed comprising the copolymer in admixture with at least one thermoplastic polymer. The copolymer may be formed by reacting at least one thermoplastic polyester precursor with a 1,4-bis (2,6-dialkylanilino)-9,10-anthraquinone colorant which has a polyester reactive group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.