Polyurethane articles comprising novel high toluene diisocyanate-stable blue colorants
US7019101B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 14, 2003 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Jun 14, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/0041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An inventive blue colorant comprising a chromophore having at least one polyester chain attached, through a suitable linking group (or groups), to the 1-position, the 4-position, or both, of an anthraquinone backbone is provided. Such colorants exhibit excellent amine/base stability and thermal stability, effective colorations, excellent low extraction rates, high lightfastness levels, particularly when incorporated within certain media and/or on the surface of certain polyurethane substrates, and most importantly excellent stability in the presence of excess of diisocyanates. The polyester chain or chains can be conveniently tailored to increase the solubility or compatibility in different types of polyurethane resin precursors thereby permitting the introduction of such excellent coloring chromophores within diverse polyurethane media and/or or diverse polyurethane substrates as well as provides a liquid colorant which facilitates handling. Compositions and articles comprising such inventive colorants are provided as well as methods for producing such inventive colorants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.