Patent US3639154A successfully refreshed from Google Patents.
US3639154A
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Process for manufacturing fibrous structure having excellent recovery from extension by treatment with polyorganosiloxane and a polyethylene glycol or derivative thereof
Assignee: Kanegafuchi Spinning Co Ltd
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Filing: 1969-07-09
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Granted: 1972-02-01
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Expires: 1989-07-09
Abstract
Abstract This invention is directed to fibrous structures such as crimped yarns and fabrics made therefrom having excellent extensibleness, recovery from extension and no water repellency. The process of the invention comprises applying to said structures an aqueous emulsion of polyorganosiloxane comprising essentially methyl hydrogen polysiloxane having specified viscosity and subsidiarily dimethyl polysiloxane if required, polyethylene glycol or a derivative thereof and a catalyst for polymerization of polysiloxane and curing preferably in a dry condition. Important fibrous structures are composed of composite fibers or of conventional mechanically crimped fibers. Crimp developing for the former or heat setting of the latter can be advantageously effected simultaneously with the aforementioned curing.
Inventors
- 👤 Yoshio Sawa
- 👤 Takashi Itoh
- 👤 Minoru Kojima
- 👤 Mikio Sotomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:38
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T442/00; Y10T442/20; Y10T442/2352; Y10T442/2369; Y10T442/2377
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
17 words
A process as claimed in claim 1, wherein the polyorganosiloxane consists substantially of said methyl hydrogen polysiloxane.
Claim 2
Dependent Claim
42 words
A process as claimed in claim 1, wherein the polyorganosiloxane consists of at least 5 percent by weight of said methyl hydrogen polysiloxane and at most 95 percent by weight of dimethyl polysiloxane having a viscosity at 25* C. of 100-50,000 centistokes.
Claim 3
Dependent Claim
52 words
A process as claimed in claim 1, wherein the amount of polyorganosiloxane applied and fixed to the fibrous structure is 0.05-10 percent by weight, based on said structure and the amount of said polyethylene glycol or its derivative applied to tHe fibrous structure is 0.05-5 percent by weight based on said structure.
Claim 4
Dependent Claim
52 words
A process as claimed in claim 1, wherein the amount of polyorganosiloxane applied and fixed to the fibrous structure is 0.2-5 percent by weight based on said structure and the amount of said polyethylene glycol or its derivative applied to the fibrous structure is 0.1-2 percent by weight based on said structure.
Claim 5
Dependent Claim
64 words
A process as claimed in claim 1, wherein said catalyst is at least one organic metal compound selected from the group consisting of: salts of a metal selected from the class consisting of tin, zinc, lead and zirconium with an organic acid selected from the class consisting of naphthenic acid, octylic acid and isooctylic acid; dibutyl tin acetate; dibutyl tin laurate; and butyl titanate.
Claim 6
Dependent Claim
28 words
A process as claimed in claim 6, wherein said catalyst is contained in the aqueous emulsion in an amount of 0.01-5.0 percent by weight based on the polyorganosiloxane.
Claim 7
Dependent Claim
40 words
A process as claimed in claim 1, wherein the fibrous structure that said aqueous emulsion has been applied to is subjected to a preliminary drying at a temperature between a room temperature and 60* C. prior to the curing treatment.
Claim 8
Dependent Claim
25 words
A process as claimed in claim 1, wherein the curing treatment is conducted at a temperature of 80*-200* C. for 10 seconds to 10 minutes.
Claim 9
Dependent Claim
19 words
A process as claimed in claim 1, wherein the curing treatment is conducted at 120*-170* C. for 0.5-2 minutes.
Claim 10
Dependent Claim
50 words
A process as claimed in claim 1, wherein the curing treatment is conducted for a period of time which satisfies the formula, where, D is the total denier of fiber in denier, T is the curing temperature in *C. and t is the period of time for curing in seconds.
Claim 11
Dependent Claim
38 words
A process as claimed in claim 1, wherein said emulsion further contains at least one organic silane compound as a cross-linking agent selected from the class consisting of isocyanates of silane compounds, alkoxysilanes and acetates of silane compounds.
Claim 12
Dependent Claim
43 words
A process as claimed in claim 1, wherein said fibrous structure has substantially no water repellency or waxy hand and wherein said polyorganosiloxane and said polyethylene glycol or derivative thereof are applied to the fibrous structure in a proportion by weight of 3:1-1:1.
Claim 13
Dependent Claim
36 words
A process as claimed in claim 1, wherein the fibrous structure comprises filaments of at least one fiber-forming thermoplastic synthetic condensation polymer selected from the class consisting of linear polyamides, linear polyesters and linear polyester ethers.
Claim 14
Dependent Claim
25 words
A process as claimed in claim 1, wherein the fibrous structure, before the application of said emulsion, has an extensibleness of at least 5 percent.
Claim 15
Dependent Claim
15 words
A process as claimed in claim 15, wherein the fibrous structure is a filament yarn.
Claim 16
Dependent Claim
24 words
A fibrous structure having excellent recovery from extension and reduced water repellency and waxy hand prepared in accordance with the process of claim 1.
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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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |