Patent US3637427A successfully refreshed from Google Patents.
US3637427A
Expired / Lapsed
US
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Process for imparting high-elastic recovery to extensible knitted or woven fabrics and product obtained
Assignee: Nippon Rayon Co Ltd
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Filing: 1968-09-20
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Granted: 1972-01-25
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Expires: 1988-09-20
Abstract
Abstract The present invention relates to a process for imparting highelastic recovery to extensible knitted or woven fabrics by treating the fabric with an organic solution of low-viscosity containing a hydroxy-terminated dimethylpolysiloxane, a methylhydrogen polysiloxane and an organometallic catalyst.
Inventors
- 👤 Motohiro Tsuruta
- 👤 Hiroshiro Kimura
- 👤 Akio Koshimo
- 👤 Hirohisa Nara
- 👤 Kunio Amemiya
- 👤 Hideki Matusaka
- 👤 Tokuju Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:51
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2369; Y10T442/2377
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
28 words
The process of claim 1 in which said fabric is composed of textured yarn selected from the class consisting of polyamide, polyester, polyacrylonitrile, polyolefin, polyvinylalcohol and mixtures thereof.
Claim 2
Dependent Claim
43 words
a methylhydrogen polysiloxane having the general formula: in which n is an integer from 15 to 50, the ratio of methylhydrogen polysiloxane to dimethylpolysiloxane is 5 to 30 parts by weight of methylhydrogen polysiloxane based upon 100 parts by weight of dimethylpolysiloxane; and
Claim 3
Dependent Claim
63 words
an organic metallic catalyst, dissolved in an organic solvent capable of dissolving said polysiloxanes and utilized in an amount to give a solution having a viscosity of not more than 400 c.p.s. so that 1.0 to 5.0 percent by weight of the fabric, of polysiloxanes are deposited as solid on said fabric, and then curing the polysiloxane treated fabric at an elevated temperature.
Claim 4
Dependent Claim
22 words
The process of claim 2 in which said textured yarn is twist-set-untwist yarn, false twist yarn, stuffer box-treated yarn or mixtures thereof.
Claim 5
Dependent Claim
29 words
The process of claim 1 in which the treating solution further contains at least one member selected from the class consisting of sodium alcoholate, ester silane and polyalkyl silicate.
Claim 6
Dependent Claim
60 words
The process of claim 1 in which said organometallic catalyst is at least one member selected from the class consisting of zinc caprylate, tin caprylate, zirconium caprylate, dibutyl tin dicaprylate, dibutyl tin dilaurate, dibutyl tin diacetate, dibutyl tin oxide, alkyl titanate, zinc naphthenate, tin naphthenate, zirconium naphthenate, ferric naphthenate, cobalt naphthenate, zinc formate, zirconium formate, zinc acetate and zirconium acetate.
Claim 7
Dependent Claim
21 words
The process of claim 1 in which said organic solvent is a hydrocarbon having carbon atoms of from one to 10.
Claim 8
Dependent Claim
29 words
The process of claim 6 in which said hydrocarbon is one member selected from the class consisting of petroleum benzine, gasoline, benzene, toluene, xylene, trichloroethylene, perchloroethylene and ethyl acetate.
Claim 9
Dependent Claim
20 words
The process of claim 1 in which said fabric is cured at a temperature of from 120* to 200* C.
Claim 10
Dependent Claim
8 words
The product of the process of claim 1.
References Cited (Backward Citations)
CA724612A
Cited
US2588366A
Cited
US3127363A
Cited
US2914836A
Cited
US3009833A
Cited
US3004871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |