# US 4,400,507 A · Isoindoline pigments

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,400,507 A
- Document ID: US4400507A
- Status: Granted
- Kind: A
- Application number: 06/214,944
- Filed: 1980-12-10
- Granted: 1983-08-23
- Earliest claimed: 1977-04-07
- Assignees: Ciba-Geigy Corporation
- Inventors: Jost von der Crone
- Web page: https://patentgrep.com/patent/US4400507A

## CPC

- C09B 57/04: Isoindoline dyes
- C09B: ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES {, e.g. PIGMENTS}; MORDANTS; LAKES (fermentation or enzyme using processes to synthesise a desired chemical compound C12P)

## Abstract

Isoindolinone pigments of the formula ##STR1## in which R is an aryl radical which can contain groups which do not confer solubility and X is a group of the formulae ##STR2## in which Q is a radical of the formula ##STR3## in which R.sub.1 is a di- or tri-halogenophenyl radical or a carbamoylphenyl radical or a phenyl radical which is fused with a 5-membered or 6-membered hetero-ring which contains a cyclically bonded --CONH group, are useful for coloring in yellow to orange shades of good fastness properties.

## Claims

### Claim 1

An isoindoline pigment of the formula ##STR20## wherein R is phenyl mono- or di-substituted by chlorine, bromine, methyl, methoxy, nitro, methoxycarbonyl, ethoxycarbonyl, methoxyphenylcarbamoyl, acetylaminophenylcarbamoyl or phthalimido; with the proviso that phenyl is mono-substituted when only chlorine or bromine is substituted thereon.

### Claim 2 (depends on 1)

The pigment of claim 1, wherein R is 4-chlorophenyl.

### Claim 3 (depends on 1)

the pigment of claim 1, wherein R is 2-methoxycarbonylphenyl.

### Claim 4 (depends on 1)

The pigment of claim 1, wherein R is 2-ethoxycarbonylphenyl.

### Claim 5 (depends on 1)

The pigment of claim 1, wherein R is 2-methylphenyl.