Patent · US Expired

Colorant compositions

US7342113B2 · kind B2 · utility

0Cited by
14References
4Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 18, 2004
Grant dateMar 11, 2008
Priority date—
Expiry dateJul 13, 2025

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.