Tint compositions useful for providing coloration to aqueous and non-aqueous liquids
US4871371A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1988 |
| Grant date | Oct 3, 1989 |
| Priority date | — |
| Expiry date | Oct 24, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B69/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A two component tint composition is provided which comprises as a first component, a colorant of the formula: ##STR1## wherein X is a polar group selected from sulfonic acids, sulfonic acid salts, sulfonamides, sulfonates, carboxylic acids, carboxylic acid salts, carboxylic acid amides, carboxylic aldehydes, carboxylic acid esters, ureas, thioureas, nitro groups, hydroxy groups, polyethers, and hydroxyalkylethers; PA0 R.sub.1 is selected from nitrogen, oxygen, sulfur, or a sulfur, or a sulfur-containing divalent linking group; PA0 R.sub.2 is hydrogen or a lower alkyl group; PA0 a is an integer of from 2-10; PA0 b is an integer of from 2-10; PA0 c and d are each independently selected from one or two; PA0 A is a chromophore selected from nitro, nitroso, monazo, diazo, diarylmethane, triarylmethane, acridine, methine, thiazole, indamine, oxazine, or anthraquinone; and PA0 B is --H, -alkyl, or -alkyl carboxylate; and PA0 as a second component a diluent selected from alkoxylated fatty acids and long chain alcohols, the weight ratio of diluent to colorant being from about 2.5 to about 5 parts diluent to 1 part colorant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.