US4369070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous dyestuff or pigment dispersions
Assignee: Bayer AG
•
Filing: 1981-08-07
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Granted: 1983-01-18
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Expires: 2001-08-07
Abstract
Abstract Aqueous dyestuff dispersions containing water-insoluble dyestuffs and water-soluble oxalkylation products which can be obtained by subjecting aromatic compounds containing phenolic OH groups to a condensation reaction with formaldehyde and amines which contain a NH group which is reactive towards formaldehyde, or containing derivatives of such oxalkylation products are suitable for pigmenting natural or synthetic materials.
Inventors
- 👤 Volker Aign
- 👤 Karlheinz Wolf
- 👤 Reinhold Hornle
- 👤 Norbert Pusch
- 👤 Klaus Walz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:24
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0084; C09B67/0085; C09D; C09D17/00; C09D17/001
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
44 words
A pigment dispersion comprising a water-insoluble pigment and a water-soluble oxyalkylation product of the condensation product of (a) phenol or C 6 -C 12 alkylphenol, (b) C 6 -C 20 alkylamine or cyclohexylamine, and (c) formaldehyde, and 10 to 100 mols of ethylene oxide.
Claim 2
Dependent Claim
44 words
A pigment dispersion comprising a water-insoluble pigment and a water-soluble oxyalkylation product of the condensation product of (a) phenol or C 6 -C 12 alkylphenol, (b) C 6 -C 20 alkylamine or cyclohexylamine, and (c) formaldehyde, and 10 to 100 mols of ethylene oxide.
Claim 3
Dependent Claim
40 words
A pigment dispersion according to claim 1 wherein said pigment is an azo pigment, an anthraquinone pigment, an azaporphine pigment, a thioindigo pigment, a polycyclic pigment, a quinacridone pigment, a dioxazine pigment, a naphthalenetetracarboxylic acid pigment, a perylenetetracarboxylic acid pigment.
Claim 4
Dependent Claim
38 words
A pigment dispersion according to claim 1 wherein said pigment is a zinc sulfide, a cadmium sulfide, a cadmium selenide, ultramarine, titanium dioxide, iron oxide, nickelyellow, chromium-titanium yellow, a chromium oxide, a chromate or a carbon black pigment.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-17 | 1986-07-19 | 1987-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-17 | 1990-07-19 | 1991-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-17 | 1994-07-19 | 1995-01-18 | $7700.00 | Window Closed / Lapsed |