US3988108A
Expired / Lapsed
US
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Process for coloring fibrous structures
Assignee: Kanebo Ltd
•
Filing: 1974-04-09
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Granted: 1976-10-26
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Expires: 1994-04-09
Abstract
Abstract A process for coloring a fibrous structure which comprises applying a coloring agent and a prepolymer or precondensate of a synthetic resin to a fibrous structure, heat-treating the fibrous structure, and then treating the fibrous structure with a reducing agent.
Inventors
- 👤 Kenji Segoshi
- 👤 Toshio Kidogami
- 👤 Chinzo Yamaba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:48
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/02; D06P1/00; D06P1/0056; D06P1/0064; D06P1/44; D06P1/52; D06P1/56; D06P1/64; D06P1/651; D06P1/65106; D06P1/65112; D06P3/00; D06P3/82; D06P3/8204; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
183 words
A process for coloring a fibrous structure consisting essentially of fibers selected from the group of natural fibers, semi-synthetic fibers and synthetic fibers which comprises applying a solution of a coloring agent and a methylol compound derived from formaldehyde, the amount of said methylol compound being about 0.7 to 30% by weight of said solution and being about 1 to 20 times the weight of the coloring agent, to the fibrous structure, heat-treating the fibrous structure at 100° to 220° C for 0.1 to 10 minutes and then treating the fibrous structure with a reducing agent selected from the group consisting of hydrogen, hydrogen iodide, hydrogen sulfide, lithium aluminum hydride, sodium borohydride, carbon monoxide, sulfur dioxide, thiourea dioxide, thiourea sulfite, sodium sulfide, polysodium sulfide, ammonium sulfide, alkali metals, magnesium, calcium, aluminum, zinc, iron (II) salts, tin (II) salts, titanium (III) salts, chromium (II) salts, aldehydes, saccharides, sodium bisulfite, Na-sulfoxylate formaldehyde, modified primary zinc salts of formaldehyde sulfoxylic acid and a hydrosulfite said reducing agents being used in an amount of 0.05 to 5% by weight based on the weight of the fibrous structure.
Claim 2
Dependent Claim
183 words
A process for coloring a fibrous structure consisting essentially of fibers selected from the group of natural fibers, semi-synthetic fibers and synthetic fibers which comprises applying a solution of a coloring agent and a methylol compound derived from formaldehyde, the amount of said methylol compound being about 0.7 to 30% by weight of said solution and being about 1 to 20 times the weight of the coloring agent, to the fibrous structure, heat-treating the fibrous structure at 100° to 220° C for 0.1 to 10 minutes and then treating the fibrous structure with a reducing agent selected from the group consisting of hydrogen, hydrogen iodide, hydrogen sulfide, lithium aluminum hydride, sodium borohydride, carbon monoxide, sulfur dioxide, thiourea dioxide, thiourea sulfite, sodium sulfide, polysodium sulfide, ammonium sulfide, alkali metals, magnesium, calcium, aluminum, zinc, iron (II) salts, tin (II) salts, titanium (III) salts, chromium (II) salts, aldehydes, saccharides, sodium bisulfite, Na-sulfoxylate formaldehyde, modified primary zinc salts of formaldehyde sulfoxylic acid and a hydrosulfite said reducing agents being used in an amount of 0.05 to 5% by weight based on the weight of the fibrous structure.
Claim 3
Dependent Claim
11 words
The process of claim 1, wherein said fibrous structure comprises cotton.
Claim 4
Dependent Claim
29 words
The process of claim 1, wherein said fibrous structure comprises a blend of polyethylene terephthalate fibers and fibers selected from the group consisting of cotton, viscose, flax and wool.
Claim 5
Dependent Claim
23 words
The process of claim 1, wherein the methylol compound and the coloring agent are applied to the fibrous structure in the same bath.
Claim 6
Dependent Claim
27 words
The process of claim 1, wherein the methylol compound is first applied to the fibrous structure, and then the coloring agent is applied to the fibrous structure.
Claim 7
Dependent Claim
21 words
The process of claim 5, wherein a catalyst for the methylol compound is included in a bath containing the coloring agent.
Claim 8
Dependent Claim
27 words
The process of claim 1, wherein the coloring agent is first applied to the fibrous structure, and then the methylol compound is applied to the fibrous structure.
Claim 9
Dependent Claim
20 words
The process of claim 1, wherein said heat-treating is at 130° C to 210° C for 0.3 to 5 minutes.
Claim 10
Dependent Claim
15 words
The process of claim 1, wherein said reducing agent is hydrosulfite or a formaldehyde-modified sulfoxylate.
Claim 11
Dependent Claim
19 words
The process of claim 1, wherein an alkali agent is jointly used in the treatment with the reducing agent.
Claim 12
Dependent Claim
19 words
The process of claim 1, wherein said amount of said reducing agent ranges from 0.1 to 3% by weight.
Claim 13
Dependent Claim
30 words
The process of claim 1, wherein said treating with said reducing agent comprises dipping said fibrous structure in a bath containing said reducing agent and then steaming said fibrous structure.
Claim 14
Dependent Claim
49 words
The process of claim 1, wherein said treating the fibrous structure with a reducing agent comprises dipping said fibrous structure in a bath containing said reducing agent for about 5 to 60 minutes and then heating said fibrous structure to a temperature of about 20° C to 130° C.
Claim 15
Dependent Claim
37 words
The process of claim 1, wherein said methylol compound derived from formaldehyde comprises precondensates of formaldehyde with compounds selected from the group consisting of phenol, cresols, aromatic amines, urea, alkylene ureas, hydroxyalkene ureas, carbamates, aminotriazines and triazones.
Claim 16
Dependent Claim
17 words
The process of claim 14, wherein said precondensate is a hydroxyalkene urea-formaldehyde precondensate or a triazone-formaldehyde precondensate.
Claim 17
Dependent Claim
60 words
The process of claim 1, wherein said fibrous structure comprises a blend of cotton and polyester fibers; wherein said coloring agent comprises a blend of a water-soluble reactive dye and a water-insoluble disperse dye; wherein said methylol compound derived from formaldehyde consists of a formaldehyde-hydroxyalkene urea precondensate compound; and wherein said reducing agent comprises a hydropersulfite or an aldehyde-modified sulfoxylate.
Claim 18
Dependent Claim
57 words
The process of claim 1, wherein said fibrous structure consists of cotton; wherein said coloring agent comprises a blend of a water-soluble reactive dye, a direct dye and an acid dye; wherein said methylol compound derived from formaldehyde consists of a formaldehyde-hydroxyalkylene urea precondensate compound; and wherein said reducing agent comprises a hydropersulfite or an aldehyde-modified sulfoxylate.
Claim 19
Dependent Claim
17 words
The process of claim 1, wherein said coloring agent is a disperse dye or a reactive dye.
Claim 20
Dependent Claim
139 words
A process for coloring a fibrous structure comprising a blend of polyethylene terephthalate fibers and fibers selected from the group consisting of cotton, viscose and flax which comprises applying (1) a coloring agent comprising a mixture of a disperse dye and a reactive or acid dye and (2) a hydroxyalkyleneurea-formaldehyde precondensate to said fibrous structure in a single bath, said precondensate being employed in an amount of about 0.7 to 30% by weight of said bath and being about 1 to 20 times the weight of said coloring agent; heat-treating said fibrous structure at a temperature of from about 130° to 210° C for a period of from about 0.3 to 5 minutes and treating the thus dyed fibrous structure at an alkaline pH with a reducing agent selected from the group consisting of hydrosulfite and a formaldehyde-modified sulfoxylate.
Claim 21
Dependent Claim
139 words
A process for coloring a fibrous structure comprising a blend of polyethylene terephthalate fibers and fibers selected from the group consisting of cotton, viscose and flax which comprises applying (1) a coloring agent comprising a mixture of a disperse dye and a reactive or acid dye and (2) a hydroxyalkyleneurea-formaldehyde precondensate to said fibrous structure in a single bath, said precondensate being employed in an amount of about 0.7 to 30% by weight of said bath and being about 1 to 20 times the weight of said coloring agent; heat-treating said fibrous structure at a temperature of from about 130° to 210° C for a period of from about 0.3 to 5 minutes and treating the thus dyed fibrous structure at an alkaline pH with a reducing agent selected from the group consisting of hydrosulfite and a formaldehyde-modified sulfoxylate.
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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) | 1979-10-26 | 1980-04-26 | 1980-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-26 | 1984-04-26 | 1984-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-26 | 1988-04-26 | 1988-10-26 | $7700.00 | Window Closed / Lapsed |