US3791849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of a chemically bondedtextile sheet material based on synthetic fibers and having a high water vapor absorption capacity
Assignee: Kalle GmbH and Co KG
•
Filing: 1970-10-13
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Granted: 1974-02-12
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Expires: 1990-10-13
Abstract
Abstract This invention relates to a process for the manufacture of chemically bonded, textile sheet material based on synthetic fibers, in which a polymer material in the form of a solution or dispersion is incorporated in the flexible textile sheet material and the polymer material is then coagulated, which comprises impregnating the textile sheet material containing synthetic fibers with a liquid binder system containing (a) a liquid aqueous dispersion of an elastomer, (b) a liquid aqueous solution of a hydrophilic polymer, and (c) a liquid aqueous emulsion of a long-chain aliphatic monoisocyanate and/or diisocyanate, or an aqueous dispersion of an ethylene imine reaction product of a monoisocyanate and/or a diisocyanate; heating the textile sheet material to the coagulating temperature of the elastomer; further heating the impregnated textile sheet material to a temperature in excess of 100*C, but below the softening temperature of the fibers contained in the textile sheet material; treating the sheet material with a washing liquid; and drying the sheet material.
Inventors
- 👤 K Hammer
- 👤 H Porrmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:30
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; D04H1/645; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6212; C08G18/64; C08G18/6484; C08G18/67; C08G18/69; C08G18/70; C08G18/71; D04H1/42; D04H1/4326; D04H1/4334; D04H1/435; D04H1/44; D04H1/46; D04H1/48; D04H1/488; D04H1/54; D04H1/552; D04H1/556; D04H1/65; D04H1/655; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2033
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
16 words
A process according to claim 1 in which the textile sheet material is dried by heating.
Claim 2
Dependent Claim
34 words
A process according to claim 1 in which the liquid binder system contains about 50 to 98 percent by weight of aqueous elastomer dispersion, calculated on the total weight of the liquid binder system.
Claim 3
Dependent Claim
16 words
A process according to claim 1 in which the elastomer employed is a butadiene-acrylonitrile-methacrylic acid terpolymer.
Claim 4
Dependent Claim
26 words
A process according to claim 1 in which the liquid binder system contains an aliphatic isocyanate having a chain length of 16 to 20 carbon atoms.
Claim 5
Dependent Claim
15 words
A process according to claim 1 in which the liquid binder system contains stearyl isocyanate.
Claim 6
Dependent Claim
28 words
A process according to claim 1 in which the liquid binder system contains a reactive ethylene imine reaction product of a monoisocyanate or a diisocyanate or mixtures thereof.
Claim 7
Dependent Claim
16 words
A process according to claim 1 in which the liquid binder system contains octadecyl ethylene urea.
Claim 8
Dependent Claim
22 words
A process according to claim 1 in which polyvinyl alcohol is employed as the water-soluble hydrophilic component of the liquid binder system.
Claim 9
Dependent Claim
34 words
A process according to claim 1 in which the liquid binder system contains an aqueous dispersion of a butadiene-acrylonitrile-methacrylic acid terpolymer, an aqueous solution of polyvinyl alcohol, and an aqueous emulsion of stearyl isocyanate.
Claim 10
Dependent Claim
34 words
A process according to claim 1 in which the liquid binder system consists of an aqueous dispersion of a butadiene-acrylonitrile-methacrylic acid terpolymer, an aqueous solution of polyvinyl alcohol, and an aqueous dispersion of octadecyl-ethylene-urea.
Claim 11
Dependent Claim
17 words
A process according to claim 1 in which a matted fiber fleece of synthetic fibers is employed.
Claim 12
Dependent Claim
18 words
A process according to claim 1 in which a matted fiber fleece of polyethylene terephthalate fibers is employed.
Claim 13
Dependent Claim
19 words
A process according to claim 1 in which a needled matted fiber fleece of polyethylene terephthalate fibers is employed.
Claim 14
Dependent Claim
31 words
A process according to claim 1 in which a needled matted fiber fleece based on polyethylene terephthalate fibers is employed having a weight per unit area of 250 grams per m2.
Claim 15
Dependent Claim
36 words
A process according to claim 1 in which a matted fiber fleece is employed which contains more than 50 percent by weight of polyethylene terephthalate fibers and less than 50 percent by weight of polyamide fibers.
Claim 16
Dependent Claim
12 words
A process according to claim 1 in which masked isocyanates are employed.
Claim 17
Dependent Claim
31 words
A process according to claim 1 in which, during the third process step, the textile sheet material is subjected for 2 to 30 minutes to a temperature between 120* and 180*C.
Claim 18
Dependent Claim
18 words
A chemically bonded, textile sheet material, based on synthetic fibers, produced accordinG to the process of claim 1.
Claim 19
Dependent Claim
33 words
A process according to claim 1 in which the liquid binder system contains an elastomer having at least one free group selected from the group consisting of COOH, OH, NH2, and SH groups.
References Cited (Backward Citations)
CA626893A
Cited
FR1128989A
Cited
US3040002A
Cited
US3190765A
Cited
US3278333A
Cited
US3424604A
Cited
US3507675A
Cited
US3494781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |