US4410657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigment pastes and their use
Assignee: BASF SE
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Filing: 1981-11-10
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Granted: 1983-10-18
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Expires: 2001-11-10
Abstract
Abstract Pigment pastes, comprising an organic solvent, a copolymer of one or more water-immiscible, or only partially water-miscible, copolymerizable α,β-olefinically unsaturated compounds and one or more water-soluble copolymerizable N-vinyl compounds, and a finely divided pigment and/or filler dispersed in the mixture of solvent and copolymer, are used for pigmenting organic and/or aqueous solutions or dispersions of surface-coating binders, for toning pigmented gloss finishes, and for pigmenting and toning anodic or cathodic electrocoating finishes.
Inventors
- 👤 Werner Loch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:17
CPC Classifications
C; C09; C09D; C09D17/00; C09D17/002; C09D139/00; C09D139/04; C09D139/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
A pigment paste, essentially comprising (A) from 20 to 85% by weight of one or more organic solvents, (B) from 0.1 to 20% by weight of a copolymer of (a) from 10 to 75% by weight of one or more water-immiscible, or only partially water-miscible, copolymerization α,β-olefinically unsaturated compounds and (b) from 25 to 90% by weight of one or more water-soluble copolymerizable N-vinyl compounds selected from the group consisting of N-vinylpyrrolidone, N-vinylpiperidone and N-vinylimidazole, and (C) from 10 to 79% by weight of one or more finely divided pigments or fillers, or a mixture of pigment and filler, dispersed in the mixture of (A) and (B), the sum of the percentages of (A), (B) and (C) being 100.
Claim 2
Dependent Claim
119 words
A pigment paste, essentially comprising (A) from 20 to 85% by weight of one or more organic solvents, (B) from 0.1 to 20% by weight of a copolymer of (a) from 10 to 75% by weight of one or more water-immiscible, or only partially water-miscible, copolymerization α,β-olefinically unsaturated compounds and (b) from 25 to 90% by weight of one or more water-soluble copolymerizable N-vinyl compounds selected from the group consisting of N-vinylpyrrolidone, N-vinylpiperidone and N-vinylimidazole, and (C) from 10 to 79% by weight of one or more finely divided pigments or fillers, or a mixture of pigment and filler, dispersed in the mixture of (A) and (B), the sum of the percentages of (A), (B) and (C) being 100.
Claim 3
Dependent Claim
27 words
A pigment paste defined in claim 1, wherein the organic solvent (A) is a C 2 -C 4 -monoalkyl ether of ethylene glycol, and/or the monoacetate thereof.
Claim 4
Dependent Claim
25 words
A pigment paste defined in claim 1, wherein the organic solvent (A) is an aromatic hydrocarbon and/or a relatively high-boiling gasoline fraction rich in aromatics.
Claim 5
Dependent Claim
46 words
A pigment paste defined in claim 1, wherein component (a) present as copolymerized units in the copolymer (B) is a vinyl ester of a C 2 -C 18 -monocarboxylic acid and/or an acrylic acid ester or methacrylic acid ester of a C 4 -C 18 -monoalcohol.
Claim 6
Dependent Claim
20 words
A pigment paste defined in claim 1, wherein component (b) present as copolymerized units in the copolymer (B) is N-vinylpyrrolidone.
Claim 7
Dependent Claim
32 words
A process for pigmenting an organic and/or aqueous solution or dispersion of a surface-coating binder or binder mixture, wherein a pigment paste as defined in claim 1 is added to said binder.
Claim 8
Dependent Claim
22 words
A process for toning a pigmented gloss paint, wherein a pigment paste as defined in claim 1 is added to said paint.
Claim 9
Dependent Claim
28 words
A process for the preparation of a pigmented anodic or cathodic electrocoating finish, wherein a pigment paste as claimed in claim 1 is added to said electrocoating finish.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-17 | 1987-04-18 | 1987-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-17 | 1991-04-18 | 1991-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-17 | 1995-04-18 | 1995-10-18 | $7700.00 | Window Closed / Lapsed |