Patent US3947287A successfully refreshed from Google Patents.
US3947287A
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US
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Aqueous pigment dispersions
Assignee: BASF SE
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Filing: 1973-12-12
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Granted: 1976-03-30
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Expires: 1993-12-12
Abstract
Abstract An aqueous pigment dispersion which contains (a) pigment, (b) a water-soluble surfactant and water and a water-retaining agent in which (b) is a reaction product of a polyhydroxyl compound with from 3 to 50 moles of propylene oxide and from 2 to 70 moles of ethylene oxide per equivalent of hydroxyl. The dispersions give bright and deep-shade emulsion paints or distempers containing cellulose ethers.
Inventors
- 👤 Horst Belde
- 👤 Knut Oppenlaender
- 👤 Ewald Daubach
- 👤 Rolf Fikentscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:47
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0084; C09B67/0085; C09B67/0089; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2603; C08G65/2606; C08G65/2609; C08L; C08L71/00; C08L71/02; C09B67/006; C09B67/0066; C09D; C09D101/00; C09D101/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
152 words
An aqueous pigment dispersion which does not flocculate in a cellulose-ether-containing emulsion paint or distemper which contains, with reference to the total weight of (a) + (b) + (c), a. from 20 to 55% by weight of a finely divided pigment; b. from 5 to 25% by weight of a water-soluble surfactant or mixture of surfactants obtained by reaction of a hydroxyl compound of the formula: A(OH) m in which A is an m-valent aliphatic or cycloaliphatic radical of two to 10 carbon atoms, Oh is primary or secondary hydroxyl; and m is one of the integers from 2 to 6; with from 3 to 50 moles of propylene oxide per equivalent of primary and secondary hydroxyl and then with from 2 to 70 moles of ethylene oxide per equivalent of primary and secondary hydroxyl and c. from 40 to 75% by weight of a mixture of water and a waterretaining agent.
Claim 2
Dependent Claim
152 words
An aqueous pigment dispersion which does not flocculate in a cellulose-ether-containing emulsion paint or distemper which contains, with reference to the total weight of (a) + (b) + (c), a. from 20 to 55% by weight of a finely divided pigment; b. from 5 to 25% by weight of a water-soluble surfactant or mixture of surfactants obtained by reaction of a hydroxyl compound of the formula: A(OH) m in which A is an m-valent aliphatic or cycloaliphatic radical of two to 10 carbon atoms, Oh is primary or secondary hydroxyl; and m is one of the integers from 2 to 6; with from 3 to 50 moles of propylene oxide per equivalent of primary and secondary hydroxyl and then with from 2 to 70 moles of ethylene oxide per equivalent of primary and secondary hydroxyl and c. from 40 to 75% by weight of a mixture of water and a waterretaining agent.
Claim 3
Dependent Claim
62 words
An aqueous pigment dispersion stable to flocculation according to claim 1 characterized by a content of surfactant (b) which has been obtained by reaction of a hydroxyl compound with from 8 to 20 moles of propylene oxide per equivalent of primary and secondary hydroxyl followed by reaction with 12 to 30 moles of ethylene oxide per equivalent of primary and secondary hydroxyl.
Claim 4
Dependent Claim
56 words
An aqueous pigment dispersion stable to flocculation according to claim 1 characterized by a content of surfactant (b) which has been obtained by reaction of trimethylolpropane, butanediol-1,4, glycerol, triethanolamine, pentaerythritol, N-(aminoethyl)-ethanolamine or a mixture thereof with from 8 to 20 moles of propylene oxide and 12 to 30 moles of ethylene oxide per equivalent of hydroxyl.
Claim 5
Dependent Claim
38 words
An aqueous pigment dispersion stable to flocculation according to claim 1, characterized by a content of surfactant (b) which has been obtained by reaction of 1 mole pentaerythritol with 64 moles propylene oxide and 74 moles ethylene oxide.
Claim 6
Dependent Claim
16 words
A pigment dispersion stable to flocculation according to claim 1 wherein (a) is an inorganic pigment.
Claim 7
Dependent Claim
33 words
A pigment dispersion stable to flocculation according to claim 1 wherein (a) is an azo pigment, quinacridone pigment, anthraquinoid pigment, a pigment based on perylene-3,4,9,10-tetracarboxylic acid, a phthalocyanine, polychlorophthalocyanine, polybromochlorophthalocyanine or oxazine pigment.
Claim 8
Dependent Claim
49 words
A pigment dispersion stable to flocculation according to claim 1 wherein said hydroxyl compound is selected from the group consisting of ethylene glycol, propylene glycol-1,3, propylene glycol-1,2, butanediol-1,3, butanediol-1,4, butenediol-1,4, butynediol, butanetriol, pentanediol-1,5, hexanediol-1,6, decandiol-1,10, glycerol, pentaerythritol, trimethylolpropane, sorbitol, triethanolamine, aminoethylethanolamine, triisopropanolamine, hexahydroterephthalyl alcohol, cyclohexanediol-1,4, cyclohexanediol-1,3 and mixtures thereof.
References Cited (Backward Citations)
US3094499A
Cited
US3451835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |