Patent US781250A successfully refreshed from Google Patents.
Patent US4227882A successfully refreshed from Google Patents.
US4227882A
Expired / Lapsed
US
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Method of treating fiber or fibrous material
Assignee: Kanebo Ltd
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Filing: 1979-09-06
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Granted: 1980-10-14
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Expires: 1999-09-06
Abstract
Abstract Change of color of grafted fiber or fibrous material having active hydrogen can be prevented by treating the fiber or fibrous material with a processing agent consisting mainly of a compound having the following general formula ##STR1## wherein M 1 -M 5 represent a hydrogen atom or alkali metal, and n represents 0 or 1.
Inventors
- 👤 Toshio Saito
- 👤 Masao Oguchi
- 👤 Akio Kisaichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:49
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; Y; Y10; Y10S; Y10S8/00; Y10S8/18
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
57 words
A method of treating fiber or fibrous material, comprising treating fiber or fibrous material having active hydrogen and graft-polymerized with a water-soluble vinyl monomer, with a processing agnt consisting mainly of a compound having the following general formula ##STR4## wherein M 1 --M 3 represent a hydrogen atom or alkali metal, and n represents 0 or 1.
Claim 2
Independent Claim
57 words
A method of treating fiber or fibrous material, comprising treating fiber or fibrous material having active hydrogen and graft-polymerized with a water-soluble vinyl monomer, with a processing agnt consisting mainly of a compound having the following general formula ##STR4## wherein M 1 --M 3 represent a hydrogen atom or alkali metal, and n represents 0 or 1.
Claim 3
Dependent Claim
26 words
A method according to claim 1, wherein said water-soluble vinyl monomer is N,N'-methylenebisacrylamide, N,N'-methylenebismethacrylamide, N,N'-methylenebis-α-ethylamide, triacryloylhexahydrotriazine, methoxypolyethylene glycol methacrylate, polyethylene glycol monomethacrylate or polyethylene glycol dimethacrylate.
Claim 4
Dependent Claim
22 words
A method according to claim 1, wherein said processing agent is ethylenediaminetetraacetic acid, monosodium ethylenediaminetetraacetate, disodium ethylenediaminetetraacetate, trisodium ethylenediaminetetraacetate or tetrasodium ethylenediaminetetraacetate.
Claim 5
Dependent Claim
24 words
A method according to claim 1, wherein said processing agent is a mixture of a compound having the general formula (1) and an assistant.
Claim 6
Dependent Claim
12 words
A method according to claim 4, wherein said assistant is hydroxy-carboxylic acid.
Claim 7
Dependent Claim
13 words
A method according to claim 5, wherein said hydroxy-carboxylic acid is citric acid.
Claim 8
Dependent Claim
31 words
A method according to claim 1, wherein said graft polymerization is carried out by heating fiber or fibrous material together with a water-soluble vinyl monomer, an acid and a polymerization initiator.
Claim 9
Dependent Claim
31 words
A method according to claim 7, wherein said acid is formic acid, monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid, acetic acid or oxalic acid.
Claim 10
Dependent Claim
18 words
A method according to claim 7, wherein said polymerization initiator is peroxide, cerium salt or water-soluble azo compound.
Claim 11
Dependent Claim
15 words
A method according to claim 9, wherein said peroxide is ammonium persulfate or potassium persulfate.
Claim 12
Dependent Claim
18 words
A method according to claim 9, wherein said cerium salt is ammonium ceric sulfate or ammonium ceric nitrate.
Claim 13
Dependent Claim
19 words
A method according to claim 9, wherein said water-soluble azo compound is sodium 4,4'-azobis-4-cyanovalerate, ammonium 4,4'-azobis-4-cyanovalerate or 2,2'-azobis(2-aminopropane) hydrochloride.
Claim 14
Dependent Claim
34 words
A method according to claim 1, wherein said processing agent is applied to the fiber or fibrous material in the form of a mixture of the processing agent with other treating agent or dye.
Claim 15
Dependent Claim
30 words
A method according to claim 1, wherein said fibrous material is hydrogen peroxide-bleached yarn, woven fabric, knitted fabric or nonwoven fabric, which contains fibers produced from polyamide, silk or wool.
References Cited (Backward Citations)
US2063908A
Cited
US3077487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-14 | 1984-04-14 | 1984-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-14 | 1988-04-14 | 1988-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-14 | 1992-04-14 | 1992-10-14 | $7700.00 | Window Closed / Lapsed |