US4248593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for obtaining fast colorations and prints on materials consisting of cellulosic fibers or of blends thereof with synthetic fibers
Assignee: Hoechst AG
•
Filing: 1978-08-10
•
Granted: 1981-02-03
•
Expires: 1998-08-10
Abstract
Abstract Fast colorations are obtained on materials consisting of or containing cellulosic fibers when aqueous alkaline solutions of water-insoluble dyeing matters are applied onto these materials, followed by a fixation by steaming and/or dry heat.
Inventors
- 👤 Friedrich Reinhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:03
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/58; D06P3/60; D06P3/6033; D06P1/00; D06P1/0048; D06P3/82; D06P3/8204; D06P3/8223; D06P3/8228; D06P3/8233
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
87 words
A process for coloring material comprised of cellulosic fibers which consists essentially of contacting said material with an aqueous alkaline solution of a water-insoluble alkali-soluble dye selected from the group consisting of pigments and disperse dyestuffs for a time sufficient to penetrate, for dyeing purposes, said material, followed by fixation by steaming, dry heat or a combination of steaming and dry heat, to reprecipitate, in a reproducible manner, said dye, and following said fixation, washing said fibers with an aqueous washing liquor containing anionic or non-ionic detergent.
Claim 2
Dependent Claim
87 words
A process for coloring material comprised of cellulosic fibers which consists essentially of contacting said material with an aqueous alkaline solution of a water-insoluble alkali-soluble dye selected from the group consisting of pigments and disperse dyestuffs for a time sufficient to penetrate, for dyeing purposes, said material, followed by fixation by steaming, dry heat or a combination of steaming and dry heat, to reprecipitate, in a reproducible manner, said dye, and following said fixation, washing said fibers with an aqueous washing liquor containing anionic or non-ionic detergent.
Claim 3
Dependent Claim
22 words
A process as claimed in claim 1, wherein the material comprises 30 to 70% by weight of cellulosic fibers, balance synthetic fibers.
Claim 4
Dependent Claim
15 words
A process as claimed in claim 2, wherein the material comprises synthetic fibers of polyester.
Claim 5
Dependent Claim
23 words
A process as claimed in claim 2, wherein an aqueous alkaline solution has added thereto an acid-yielding agent, yielding said acid during fixation.
Claim 6
Dependent Claim
33 words
A process as claimed in claim 4, wherein the acid-yielding agent is an ester, an amide or ureide of an inorganic or organic acid, or a salt of a halogenated lower alkanoic acid.
Claim 7
Dependent Claim
16 words
A process as claimed in claim 1, wherein the cellulosic fibers are natural or regenerated cellulose.
Claim 8
Dependent Claim
47 words
A process as claimed in claim 1, wherein the base for the aqueous alkaline solution is an alkali metal hydroxide, an alkaline earth metal hydroxide, an alkaline-reacting alkali metal or alkaline earth metal salt of a weak or intermediately strong organic or inorganic acid, or an amine.
Claim 9
Dependent Claim
15 words
A process as claimed in claim 1, wherein the water-insoluble dye is a disperse dye.
Claim 10
Dependent Claim
17 words
A process as claimed in claim 1, wherein the aqueous alkaline solution contains a water-miscible organic solvent.
Claim 11
Dependent Claim
23 words
A process as claimed in claim 1, wherein the alkaline aqueous solution contains a thickener and is applied by padding, slop-padding or printing.
Claim 12
Dependent Claim
27 words
A process as claimed in claim 1, wherein fixation occurs by steaming for 1 to 15 minutes with saturated or superheated steam at 160° to 190° C.
Claim 13
Dependent Claim
25 words
A process as claimed in claim 1, wherein fixation occurs by a hot air treatment for 20 to 90 seconds at 170° to 210° C.
Claim 14
Dependent Claim
93 words
A process for coloring a fabric containing at least 30% by weight of cellulosic fibers which comprises padding, slop-padding or printing said fabric with an aqueous alkaline solution of a disperse dyestuff, soluble in said alkaline solution, said solution containing an alkali-stable thickener and an acid yielding agent, thereafter fixing by a heat treatment by steaming with saturated steam, steaming with super-heated steam or dry heat, whereby said acid-yielding agent sets free the acid, followed by washing with an aqueous washing liquor containing an anionic or nonionic detergent at 60° to 90° C.
Claim 15
Dependent Claim
93 words
A process for coloring a fabric containing at least 30% by weight of cellulosic fibers which comprises padding, slop-padding or printing said fabric with an aqueous alkaline solution of a disperse dyestuff, soluble in said alkaline solution, said solution containing an alkali-stable thickener and an acid yielding agent, thereafter fixing by a heat treatment by steaming with saturated steam, steaming with super-heated steam or dry heat, whereby said acid-yielding agent sets free the acid, followed by washing with an aqueous washing liquor containing an anionic or nonionic detergent at 60° to 90° C.
References Cited (Backward Citations)
GB1133650A
Cited
US2785040A
Cited
US3494716A
Cited
US3418063A
Cited
DE1469750A1
Cited
US3545910A
Cited
US3649161A
Cited
US3807945A
Cited
US3888624A
Cited
NL7302648A
Cited
GB1417512A
Cited
GB1425451A
Cited
CA998207A
Cited
US3990839A
Cited
US4023925A
Cited
DE2443268A1
Cited
US3993438A
Cited
SU513138A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |