US4373930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous dispersions of coloring materials: poly-alkyleneoxy naphthalene dispersing agents
Assignee: Imperial Chemical Industries Ltd
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Filing: 1981-09-15
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Granted: 1983-02-15
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Expires: 2001-09-15
Abstract
Abstract An aqueous dispersion of a solid, especially a disperse dyestuff or a pigment, containing, as dispersing agent, a water-soluble, non-ionic polycyclic aromatic compound having a poly(lower alkylene-oxy)chain containing from 5 to 30 lower alkylene-oxy groups. Preferred dispersing agents contain about 10 ethylene-oxy groups in the chain. The dispersions of disperse dyestuffs are especially suitable for use in aqueous print pastes based on synthetic thickening agents and the pigment dispersions are suitable for use in emulsion paints.
Inventors
- 👤 Geoffrey R. Rothwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:03
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/60; D06P1/613; D06P1/6131; D06P1/6135; C; C09; C09B; C09B67/00; C09B67/006; C09B67/0071; C09B67/008; C09B67/0084; C09B67/0085; C09B67/0089
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
68 words
An aqueous dispersion of a finely-divided, inorganic or non-ionic, organic solid selected from the groups consisting of disperse dyestuffs, pigments, optical brightening agents and anthraquinone, containing a water-soluble, non-ionic dispersing agent which comprises naphthalene carrying, in the alpha or the beta position, a water-solubilising poly(C 2 to C 4 alkyleneoxy) chain containing from 5 to 15 C 2 to C 4 alkyleneoxy groups and otherwise free from substituents.
Claim 2
Dependent Claim
68 words
An aqueous dispersion of a finely-divided, inorganic or non-ionic, organic solid selected from the groups consisting of disperse dyestuffs, pigments, optical brightening agents and anthraquinone, containing a water-soluble, non-ionic dispersing agent which comprises naphthalene carrying, in the alpha or the beta position, a water-solubilising poly(C 2 to C 4 alkyleneoxy) chain containing from 5 to 15 C 2 to C 4 alkyleneoxy groups and otherwise free from substituents.
Claim 3
Dependent Claim
23 words
An aqueous dispersion according to claim 1 wherein at least 50% of the C 2 to C 4 alkyleneoxy groups are ethyleneoxy groups.
Claim 4
Dependent Claim
59 words
An aqueous dispersion according to claim 1 wherein the dispersing agent has the formula: A--X--Y wherein A represents unsubstituted naphthyl; X represents a group selected from --O--, --Co.O-- and --S--; and Y represents --(C 3 H 6 O) m --(C 2 H 4 O) n wherein m is from O to n and m+n is from 5 to 15.
Claim 5
Dependent Claim
11 words
An aqueous dispersion according to claim 3 wherein X is --O--.
Claim 6
Dependent Claim
35 words
An aqueous dispersion according to claim 1 containing from 5 to 70%, by weight, of the solid and from 5 to 150%, by weight, based on the weight of the solid, of the dispersing agent.
Claim 7
Dependent Claim
29 words
An aqueous print paste comprising a dispersion according to any one of claims 1 to 4 and 5 wherein the solid is a disperse dyestuff, and a thickening agent.
Claim 8
Dependent Claim
16 words
A print paste according to claim 6 wherein the thickening agent is a synthetic thickening agent.
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) | 1986-02-14 | 1986-08-16 | 1987-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-14 | 1990-08-16 | 1991-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-14 | 1994-08-16 | 1995-02-15 | $7700.00 | Window Closed / Lapsed |