Patent US3948599A successfully refreshed from Google Patents.
US3948599A
Expired / Lapsed
US
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Noncaking, readily soluble dyestuff granulates of anionic dyestuffs
Assignee: Novartis Corp
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Filing: 1973-04-30
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Granted: 1976-04-06
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Expires: 1993-04-30
Abstract
Abstract Dyestuff granulates of anionic dyestuffs are described, the said granulates containing anionic dyestuff, optionally together with a surface-active agent and/or further auxiliaries, dissolved in a melt of urea, which granulates are solid, non-dusty, noncaking, and very easily and rapidly soluble or dispersible even in cold water, and are particularly suitable for the production of aqueous dye preparations, which can be used for the dyeing and printing of the widest variety of materials.
Inventors
- 👤 Ulrich Irmiger
- 👤 Zdenek Koci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:25
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0092; C09B67/0095; C09B67/0072
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
86 words
Solid non-dusty, noncaking, readily water soluble dyestuff granulates of anionic dyestuffs, the said granulates containing at least one anionic dyestuff, optionally together with a surface-active agent and/or further auxiliaries, dissolve in a melt of urea and wherein said granulates contain 1 to 80 percent by weight of said at least one anionic dyestuff, 20 to 99 percent by weight of said urea, and optionally 1 to 5 percent by weight of said surface-active agent, and optionally 5 to 60 percent by weight of said further auxiliaries.
Claim 2
Dependent Claim
86 words
Solid non-dusty, noncaking, readily water soluble dyestuff granulates of anionic dyestuffs, the said granulates containing at least one anionic dyestuff, optionally together with a surface-active agent and/or further auxiliaries, dissolve in a melt of urea and wherein said granulates contain 1 to 80 percent by weight of said at least one anionic dyestuff, 20 to 99 percent by weight of said urea, and optionally 1 to 5 percent by weight of said surface-active agent, and optionally 5 to 60 percent by weight of said further auxiliaries.
Claim 3
Dependent Claim
34 words
Solid, non-dusty, noncaking, readily water soluble dyestuff granulates according to claim 1 which contain, as surface-active agent, an anion-active surface-active agent, particularly dioctyl sulphosuccinate, and as other auxiliary, thiourea and/or small amounts of water.
Claim 4
Dependent Claim
27 words
Solid, non-dusty, noncaking, readily water soluble dyestuff granulates according to claim 1 which contain, as anionic dyestuff, a dyestuff containing sulphonic acid groups, or a metal-complex dyestuff.
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) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |