Colorant compositions
US7544804B2 · kind B2 · utility
5Cited by
16References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2008 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Feb 8, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Colorant compositions are useful for a wide variety of product applications. For example, colorants are used in tinting of polymers, providing colors to aqueous solution(s), and affording color to solid or semi-solid products such as detergents. Disclosed herein are colorant compositions having a triphenylmethane (“TPM”) structure having improved stability to alkaline conditions. Thus, the colorant compositions resist decolorization, even at relatively high pH levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.