# US 5,352,729 A · Use of pigment formulations for the preparation of pastes, printing inks and coatings

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- Number: US 5,352,729 A
- Document ID: US5352729A
- Status: Granted
- Kind: A
- Application number: 07/973,986
- Filed: 1992-11-09
- Granted: 1994-10-04
- Earliest claimed: 1991-11-14
- Assignees: BASF SE
- Inventors: Hermann Birkhofer; Walter Denzinger; Heinrich Hartmann; Juan A. G. Gomez; Paul Guenthert; Joachim Jesse; Robert Kreuzer; Knut Oppenlaender; Reinhard U. Roth; Benno Sens
- Web page: https://patentgrep.com/patent/US5352729A

## CPC

- C09D 11/037: characterised by the pigment
- C09B 67/0063: {of organic pigments with only macromolecular substances}
- C09B 67/009: {polymeric dispersing agent}
- C09D 7/41: Organic pigments; Organic dyes
- Y10T 428/2998: including synthetic resin or polymer
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- 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)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Pigment formulations containing (a) at least one finely divided pigment, (b) at least one copolymer obtainable by free radical polymerization of (.alpha..sub.1) C.sub.8 -C.sub.40 -monoolefins or (.alpha..sub.2) C.sub.8 -C.sub.40 -alkyl vinyl ethers or (.alpha..sub.3) a mixture of C.sub.8 -C.sub.40 -alkyl vinyl ethers and up to 50 mol % of C.sub.8 -C.sub.40 -monoolefins with (.beta.) monoethylenically unsaturated C.sub.4 -C.sub.12 -dicarboxylic acids or C.sub.4 -C.sub.12 -dicarboxylic anhydrides and having a molecular weight of from 500 to 20,000 g/mol, some or all of whose carboxyl or anhydride groups may be reacted with ammnonia, amines, alcohols, amino- or hydroxycarboxylic acids or alkali metal or alkaline earth metal hydroxides, and (c) if required, further assistants conventionally used in pigment formulations are used for the preparation of pastes, printing inks and coatings.

## Claims

### Claim 1

A process for the preparation of pastes, printing inks or coatings, comprising
(a) selecting at least one finely divided pigment,
(b) mixing with said finely divided pigment at least one thermoplastic copolymer obtainable by free radical polymerization of
(.alpha..sub.1) C.sub.8 -C.sub.40 -monoolefins or
(.alpha..sub.2) C.sub.8 -C.sub.40 -alkyl vinyl ethers or
(.alpha..sub.3) a mixture of C.sub.8 -C.sub.40 -alkyl vinyl ethers and up to 50 mol % of C.sub.8 -C.sub.40 -monoolefins with
(.beta.) monoethylenically unsaturated C.sub.4 -C.sub.12 -dicarboxylic acids or C.sub.4 -C.sub.12 -dicarboxylic anhydrides
and having a weight average molecular weight of from 500 to 20,000 g/mol, some or all of whose carboxyl or anhydride groups may be reacted with ammonia, amines, alcohols, amino- or hydroxycarboxylic acids or alkali metal or alkaline earth metal hydroxides, and
(c) if required, further assistants conventionally used in pigment formulations,
wherein the thermoplastic copolymer (b) is present in an amount of from 1 to 30% by weight based on the pigment (a).

### Claim 2 (depends on 1)

A paste, printing ink or coating containing a pigment formulation prepared by the process of claim 1.

### Claim 3

A pigment formulation containing
(a) at least one finely divided pigment,
(b') at least one copolymer obtainable by free radical polymerization of
(.alpha..sub.1 ') C.sub.18 -C.sub.40 -monoolefins or
(.alpha..sub.2) C.sub.8 -C.sub.40 -alkyl vinyl ethers or
(.alpha..sub.3) a mixture of C.sub.8 -C.sub.40 -alkyl vinyl ethers and up to 50 mol % of C.sub.8 -C.sub.40 -monoolefins with
(.beta.) monoethylenically unsaturated C.sub.4 -C.sub.12 -dicarboxylic acids or C.sub.4 -C.sub.12 -dicarboxylic anhydrides
and having a molecular weight of from 500 to 12,000 g/mol, some or all of whose carboxyl or anhydride groups are reacted with ammonia, amines, amino- or hydroxycarboxylic acids or alkali metal or alkaline earth metal hydroxides, and
(c) if required, further assistants conventionally used in pigment formulations.

### Claim 4 (depends on 3)

A pigment formulation as claimed in claim 3, which contains from 1 to 30% by weight of (b'), based on (a).