# US 4,391,648 A · Particulate pigment compositions

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

- Number: US 4,391,648 A
- Document ID: US4391648A
- Status: Granted
- Kind: A
- Application number: 06/274,972
- Filed: 1981-06-18
- Granted: 1983-07-05
- Earliest claimed: 1978-12-04
- Assignees: Ciba-Geigy Corporation
- Inventors: Richard M. Ferrill, Jr.
- Web page: https://patentgrep.com/patent/US4391648A

## CPC

- C08K 5/0091: {Complexes with metal-heteroatom-bonds}
- C08K 3/013: Fillers, pigments or reinforcing additives
- C08K 5/0041: {Optical brightening agents, organic pigments}
- C09B 67/006: {Preparation of organic pigments}
- C09C 3/10: Treatment with macromolecular organic compounds {(C09C3/006 takes precedence)}
- C01P 2004/61: Micrometer sized, i.e. from 1-100 micrometer
- C01P 2004/80: Particles consisting of a mixture of two or more inorganic phases
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- 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)
- C09C: TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES (treatment of materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone C04B14/00, C04B18/00, C04B20/00); PREPARATION OF CARBON BLACK {; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS}
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

## Abstract

Pigmented compositions which are readily dispersible in oleoresinous vehicle systems are described. The compositions comprise by weight from 25 to 95% pigment and 5 to 75% of certain water-insoluble, friable thermoplastic polyester resins having a hydroxyl value of at least 50 mg/KOH per gram and a Ring and Ball softening point of at least 60.degree. C. Particularly preferred polyester resins are the condensation products of an aromatic dicarboxylic acid, anhydride or ester, an aromatic monocarboxylic acid and an aliphatic polyol containing at least three hydroxymethyl groups.

## Claims

### Claim 1

A solid particulate granular pigment composition which is readily dispersible in oleoresinous vehicle systems and consists essentially of from 25 to 95% by weight of at least one pigment; from 1 to 15% of a cationic surfactant or blend of surfactants; and from 5 to 75% of a water-insoluble, non-crystalline, friable, thermoplastic polyester resin having a hydroxyl value of 75-150 mg. KOH/gram of resin and a Ring and Ball softening point of from about 65.degree. to 100.degree. C. which polyester resin is the condensation product of phthalic anhydride, p-tert. butylbenzoic acid and trimethylol ethane.

### Claim 2 (depends on 1)

The composition of claim 1 wherein the pigment is an inorganic pigment.

### Claim 3 (depends on 2)

The composition of claim 2 wherein the pigment is a lead chromate-containing pigment.

### Claim 4 (depends on 1)

The composition of claim 1 wherein the pigment is an organic pigment.

### Claim 5 (depends on 4)

The composition of claim 4 wherein the pigment is a copper phthalocyanine pigment.