Patent US3966488A successfully refreshed from Google Patents.
US3966488A
Expired / Lapsed
US
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Flowable aqueous pigment formulations containing dipropylene glycol
Assignee: BASF SE
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Filing: 1974-01-30
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Granted: 1976-06-29
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Expires: 1994-01-30
Abstract
Abstract Aqueous pigment formulations containing glycol and having good flow, good water retention and good flocculation resistance which contain dipropylene glycol as a flow improver. The formulations are particularly suitable for pigmenting aqueous polymer dispersions and textile pigment printing and dope dyeing.
Inventors
- 👤 Hans Langenfelder
- 👤 Ewald Daubach
- 👤 Horst Belde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:47
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/006
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
42 words
An aqueous pigment composition having improved flow, said composition consisting essentially of a. water, b. a water-insoluble pigment, c. a water-soluble dispersing agent and d. from 5 to 35% by weight of dipropylene glycol based on the total weight of the composition.
Claim 2
Dependent Claim
42 words
An aqueous pigment composition having improved flow, said composition consisting essentially of a. water, b. a water-insoluble pigment, c. a water-soluble dispersing agent and d. from 5 to 35% by weight of dipropylene glycol based on the total weight of the composition.
Claim 3
Dependent Claim
26 words
A pigment composition as claimed in claim 1 in which the content of dipropylene glycol is from 15 to 25% by weight based on the composition.
Claim 4
Dependent Claim
31 words
A pigment composition as claimed in claim 1 which contains a copper phthalocyanine, azo pigment, quinacridone pigment, dioxazine pigment, perylene tetracarboxylic acid pigment, thioindigo pigment or vat dye as the pigment.
Claim 5
Dependent Claim
28 words
A pigment composition as claimed in claim 1 in which the dispersing agent is selected from the group consisting of nonionic, cationic and anionic oxyethylated and oxypropylated compounds.
Claim 6
Dependent Claim
24 words
A pigment composition as claimed in claim 4 in which the dispersing agent is the ethylene oxide and propylene oxide adduct of ethylene diamine.
Claim 7
Dependent Claim
20 words
A pigment composition as claimd in claim 4 in which the dispersing agent is the ethylene oxide adduct of nonylphenol.
Claim 8
Dependent Claim
21 words
A pigment composition as claimed in claim 4 in which the dispersing agent is the ethylene oxide adduct of stearyl alcohol.
Claim 9
Dependent Claim
52 words
A pigment composition as claimed in claim 1 in which there is from 8 to 20% by weight of water, 25 to 70% by weight of pigment, 2 to 25% by weight of dispersing agent and 10 to 30% by weight of dipropylene glycol, based on the total weight of the composition.
Claim 10
Dependent Claim
21 words
A pigment composition as claimed in claim 8 in which the content of pigment is about 35 to 65% by weight.
References Cited (Backward Citations)
US3156574A
Cited
US3705045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |