US4392265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of modifying the dye affinity of cellulose fiber-containing structure with benzene sulfonyl chloride
Assignee: Toppan Inc
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Filing: 1981-11-12
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Granted: 1983-07-12
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Expires: 2001-11-12
Abstract
Abstract The method involves treating a cellulose fiber-containing structure with an alkaline agent, coating the structure with an acid chloride having the following formula: <IMAGE> (wherein X is -H, -NO2, -CH3 or -SO2Cl) and subjecting the resultant structure to heat treatment to cause chemical modification. The acid chloride is employed in the form of an emulsion in water. The emulsion may also contain a thickener such as a natural sizing agent or a dye. The method provides a more dyeable cellulose fiber-containing structure.
Inventors
- 👤 Takahiro Fujiu
- 👤 Masao Nakajima
- 👤 Shigeru Okano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:48
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/003; D06P5/004; D06P5/005; D06B; D06B11/00; D06B11/0079; D06B11/0089; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/256; D06P5/22; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
83 words
A method of modifying the dye affinity of a cellulose fiber-containing structure, comprising the steps of treating a cellulose fiber structure or a mixed structure of a cellulose fiber and a synthetic fiber with an alkaline agent, coating the structure with an aqueous emulsion of an acid chloride having the formula: ##STR5## (wherein X is --H, --NO 2 , --CH 3 or --SO 2 Cl) and subjecting the coated structure to heat treatment prior to drying of the emulsion to cause chemical modification.
Claim 2
Independent Claim
83 words
A method of modifying the dye affinity of a cellulose fiber-containing structure, comprising the steps of treating a cellulose fiber structure or a mixed structure of a cellulose fiber and a synthetic fiber with an alkaline agent, coating the structure with an aqueous emulsion of an acid chloride having the formula: ##STR5## (wherein X is --H, --NO 2 , --CH 3 or --SO 2 Cl) and subjecting the coated structure to heat treatment prior to drying of the emulsion to cause chemical modification.
Claim 3
Dependent Claim
16 words
A method according to claim 1, wherein the heat treatment is carried out by microwave heating.
Claim 4
Dependent Claim
18 words
A method according to claim 2, wherein the microwave heating is carried out for 5 to 120 seconds.
Claim 5
Dependent Claim
19 words
A method according to claim 1, wherein the emulsion contains the acid chloride, a disperse dye and a thickener.
Claim 6
Dependent Claim
17 words
A method according to claim 4, wherein the thickener is an animal, vegetable or mineral sizing agent.
Claim 7
Dependent Claim
25 words
A method according to claim 1, wherein the emulsion contains the acid chloride, a vegetable natural sizing agent, bentonite and a nonionic surface active agent.
Claim 8
Independent Claim
34 words
A method according to any one of claims 1 to 3 and 6, wherein treatment with a resin capable of being dyed with a disperse dye is further carried out after the chemical modification.
Claim 9
Independent Claim
31 words
A method according to any one of claims 1 to 3 and 6, wherein treatment with a fiber crosslinking agent and a crosslinking catalyst is carried out after the chemical modification.
Claim 10
Independent Claim
47 words
A method according to any one of claims 1 to 6, wherein the fiber structure is partially chemically modified and subjected to heat treatment with a 40 to 75% sulfuric acid solution, whereby the chemically unmodified portion thereof is dissolved substantially completely to give a transparent pattern.
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) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |