Patent US1485780A successfully refreshed from Google Patents.
Patent US3853608A successfully refreshed from Google Patents.
US3853608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of a reinforced, non-woven textile fiber sheet material
Assignee: Kalle GmbH and Co KG
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Filing: 1972-09-22
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Granted: 1974-12-10
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Expires: 1992-09-22
Abstract
Abstract This invention relates to a random fiber sheet material having regions in which fiber cross-over points are bonded by synthetic elastomer binder, the regions being separated within the material by regions in which there is no bonding of fiber cross-over points. The invention also relates to a process for the preparation of the material.
Inventors
- 👤 K Hammer
- 👤 L Klenk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:37
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/42; D04H1/4326; D04H1/4334; D04H1/435; D04H1/64; D04H1/645; D04H3/00; D04H3/005; D04H3/009; D04H3/011; D04H3/08; D04H3/12; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2033; Y10T442/2041; Y10T442/2098
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
121 words
A PROCESS FOR THE MANUFACTURE OF CHEMICALLY BONDED NON-WOVEN TEXTILE FIBER SHEET MATERIAL WHICH COMPRISES A. TREATING A NON-WOVEN TEXTILE FIBER SHEET MATERIAL WITH A BINDER LIQUID COMPOSED OF AN AQUEOUS DISPERSION OF A SYNTHETIC ELASTOMER CONTAINING CHEMICALLY REACTIVE GROUPS AND A SOLUTION OF SILICONE OIL IN TOLUENE, B. ELIMINATING EXCESSIVE BINDER LIQUID FROM THE MATERIAL, C. SUBJECTING THE RESULTING MATERIAL TO HEAT, D. TREATING THE RESULTING MATERIAL WITH AN IMPREGNATING LIQUID, E. ELIMINATING EXCESS IMPREGNATING LIQUID FROM THE MATERIAL, F. HEATING THE MATERIAL RESULTING FROM STEP (E), G. TREATING THE RESULTING MATERIAL WITH A LIQUID CONTAINING A SYNTHETIC ELASTOMER, H. ELIMINATING EXCESSIVE ELASTOMER LIQUID FROM THE MATERIAL, I. CONGULATING ELASTOMER REMAINING IN THE MATERIAL, AND J. HEATING THE RESULTING MATERIAL.
Claim 2
Dependent Claim
121 words
A PROCESS FOR THE MANUFACTURE OF CHEMICALLY BONDED NON-WOVEN TEXTILE FIBER SHEET MATERIAL WHICH COMPRISES A. TREATING A NON-WOVEN TEXTILE FIBER SHEET MATERIAL WITH A BINDER LIQUID COMPOSED OF AN AQUEOUS DISPERSION OF A SYNTHETIC ELASTOMER CONTAINING CHEMICALLY REACTIVE GROUPS AND A SOLUTION OF SILICONE OIL IN TOLUENE, B. ELIMINATING EXCESSIVE BINDER LIQUID FROM THE MATERIAL, C. SUBJECTING THE RESULTING MATERIAL TO HEAT, D. TREATING THE RESULTING MATERIAL WITH AN IMPREGNATING LIQUID, E. ELIMINATING EXCESS IMPREGNATING LIQUID FROM THE MATERIAL, F. HEATING THE MATERIAL RESULTING FROM STEP (E), G. TREATING THE RESULTING MATERIAL WITH A LIQUID CONTAINING A SYNTHETIC ELASTOMER, H. ELIMINATING EXCESSIVE ELASTOMER LIQUID FROM THE MATERIAL, I. CONGULATING ELASTOMER REMAINING IN THE MATERIAL, AND J. HEATING THE RESULTING MATERIAL.
Claim 3
Dependent Claim
45 words
A process as claimed in claim 1, wherein the binder liquid of step (a) contains as said aqueous dispersion an aqueous dispersionn of a copolymer of 92 % by weight of butyl acrylate, 4% by weight of methacrylic acid and 4% by weight of acrylamide.
Claim 4
Dependent Claim
52 words
A process as claimed in claim 1 wherein the binder liquid of step (a) contains as said aqueous dispersion an aqueous dispersion of a copolymer of 86% by weight of butyl acrylate, 4% by weight of itaconic acid, 8% by weight of dimethylolmethacrylic acid amide and 2% by weight of methacrylic acid.
Claim 5
Dependent Claim
23 words
A process as claimed in claim 1 wherein as the elastomer of step (g) there is used a copolymer based on butadiene-acrylonitrile-methacrylic acid.
Claim 6
Dependent Claim
40 words
A process as claimed in claim 1 wherein as the elastomer of step (g) there is used a copolymer of approximately 64% by weight of butadiene, approximately 32% by weight of acrylonitrile and approximately 4% by weight of methacrylic acid.
Claim 7
Dependent Claim
17 words
A process as claimed in claim 2 wherein as the elastomer of step (g) polyurethane is used.
Claim 8
Dependent Claim
16 words
A process as claimed in claim 1 wherein the impregnating liquid of step (d) contains dimethylpolysiloxane.
Claim 9
Dependent Claim
23 words
A process as claimed in claim 1 wherein the impregnating liquid of step (d) contains a melamine-formaldehyde precondensate and a synthetic perfluorinated compound.
Claim 10
Dependent Claim
17 words
A chemically bonded non-woven textile fiber sheet material, when made by the process claimed in claim 1.
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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |