Patent US3841888A successfully refreshed from Google Patents.
US3841888A
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Aqueous pigment dispersions
Assignee: BASF SE
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Filing: 1972-11-03
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Granted: 1974-10-15
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Expires: 1992-11-03
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 an aliphatic or aromatic diamine or polyhydroxyl compound with from 3 to 50 moles of propylene oxide and from 2 to 70 moles of ethylene oxide per equivalent of reactive amino hydrogen or hydroxyl. The dispersions give bright and deep-shade emulsion paints or distempers containing cellulose ethers.
Inventors
- 👤 H Belde
- 👤 K Oppenlaender
- 👤 E Daubach
- 👤 R Fikentscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:36
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0084; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2603; C08G65/2606; C08G65/2609; C08K; C08K3/00; C08K3/01; C08K3/013; C09B67/006; C09B67/0066; C09D; C09D101/00; C09D101/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
64 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 PERCENT BY WEIGHT OF FINELY DIVIDED PIGMENT, (B) FROM 5 TO 25 PERCENT BY WEIGHT OF A WATER-SOLUBLE SURFACTANT OR MIXTURE OF SURFACTANTS OBTAINED BY REACTION OF (A) AN AMINE OF THE FORMULA
Claim 2
Dependent Claim
64 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 PERCENT BY WEIGHT OF FINELY DIVIDED PIGMENT, (B) FROM 5 TO 25 PERCENT BY WEIGHT OF A WATER-SOLUBLE SURFACTANT OR MIXTURE OF SURFACTANTS OBTAINED BY REACTION OF (A) AN AMINE OF THE FORMULA
Claim 3
Dependent Claim
66 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 the amino compound ( Alpha ) or ( Beta ) with from 8 to 20 moles of propylene oxide per equivalent of reactive amino hydrogen and then with 12 to 30 moles of ethylene oxide per equivalent of reactive amino hydrogen.
Claim 4
Dependent Claim
44 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 ethylenediamine, diethylenetriamine, propylenediamine-1,3, dipropylenetriamine, hexamethylenediamine, N-bis-(3-aminopropyl)-N-methylamine, N-( Beta -aminoethyl)-ethanolamine, piperazine, o-phenylenediamine, m-phenylenediamine, p-phenylenediamine, bis-(3-methyl-4-aminophenyl)-methane or mixtures of the same.
Claim 5
Dependent Claim
39 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 ethylene diamine with 70 moles propylene oxide and 70 moles ethylene oxide.
Claim 6
Dependent Claim
39 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 phenylene diamine with 68 moles propylene oxide and 74 moles ethylene oxide.
Claim 7
Dependent Claim
16 words
A pigment dispersion stable to flocculation according to claim 2 wherein (a) is an inorganic pigment.
Claim 8
Dependent Claim
33 words
A pigment dispersion stable to flocculation according to claim 2 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 9
Dependent Claim
25 words
An aqueous emulsion paint containing a cellulose ether and a binder and which has been colored with a pigment dispersion as claimed in claim 1.
References Cited (Backward Citations)
US3094499A
Cited
US3337360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |