US3989870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic sheet adhered to polyurethane ionomer latex foam
Assignee: Bayer AG
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Filing: 1973-06-25
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Granted: 1976-11-02
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Expires: 1993-06-25
Abstract
Abstract This invention discloses a composite material consisting of layers of a plastic sheet, a polyurethane ionomer latex foam and a textile material.
Inventors
- 👤 Paul J. Bocks
- 👤 Jurgen Grammel
- 👤 Hermann Neumaier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:19
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; B; B32; B32B; B32B27/00; B32B27/06; B32B27/065; B32B27/30; B32B27/304; B32B27/40; B32B5/00; B32B5/02; B32B5/024; B32B5/026; B32B5/18; B32B5/22; B32B5/24; B32B5/245; C08J; C08J9/00; C08J9/30; D; D06; D06N; D06N3/00; D06N3/12; D06N3/14; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2305/00; B32B2305/02; B32B2305/022; B32B2305/10; B32B2305/18; C08G2110/00; C08G2110/0008; C08G2110/0041; C08J2375/00; C08J2375/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31554; Y10T442/00; Y10T442/30; Y10T442/3325; Y10T442/40; Y10T442/469; Y10T442/60; Y10T442/647
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
225 words
A composite material comprising layers of a. a plastic sheet with a weight per square meter or 20-300 g/m 2 and a tensile strength of at least 40 kg/cm 2 adhered to b. a polyurethane ionomer latex foam having a gross density of 0.04 to 0.40 g/cm 3 produced from aqueous air whipped ionomeric polyurethane dispersions which have i. a solids content of 45 to 62 % by weight of polyurethane, ii. a viscosity of 10 to 70 seconds outflow time from a Ford measuring cup with a 4 mm nozzle, iii. a particle diameter of 0.05 to 1.0 μ iv. an ionic group content of 3 to 40 milliequivalents per 100 g of polyurethane solids of ions selected from the group consisting of >N +- , --COO - , --SO 3 - , and wherein R is hydrogen or a lower alkyl group, and v. a tensile strength of at least 40 kg/cm 2 when dried to a homogeneous polyurethane foil, and which contain i. 1-10% by weight of a foam stabilizing agent, based on the weight of solid polyurethane, ii. 0-100% by weight of inorganic fillers based on the weight of solid polyurethane, iii. 0-30% by weight of crosslinking agent based on the weight of solid polyurethane, and iv. 0.1 to 10% by weight of thickener based on the weight of solid polyurethane.
Claim 2
Dependent Claim
225 words
A composite material comprising layers of a. a plastic sheet with a weight per square meter or 20-300 g/m 2 and a tensile strength of at least 40 kg/cm 2 adhered to b. a polyurethane ionomer latex foam having a gross density of 0.04 to 0.40 g/cm 3 produced from aqueous air whipped ionomeric polyurethane dispersions which have i. a solids content of 45 to 62 % by weight of polyurethane, ii. a viscosity of 10 to 70 seconds outflow time from a Ford measuring cup with a 4 mm nozzle, iii. a particle diameter of 0.05 to 1.0 μ iv. an ionic group content of 3 to 40 milliequivalents per 100 g of polyurethane solids of ions selected from the group consisting of >N +- , --COO - , --SO 3 - , and wherein R is hydrogen or a lower alkyl group, and v. a tensile strength of at least 40 kg/cm 2 when dried to a homogeneous polyurethane foil, and which contain i. 1-10% by weight of a foam stabilizing agent, based on the weight of solid polyurethane, ii. 0-100% by weight of inorganic fillers based on the weight of solid polyurethane, iii. 0-30% by weight of crosslinking agent based on the weight of solid polyurethane, and iv. 0.1 to 10% by weight of thickener based on the weight of solid polyurethane.
Claim 3
Dependent Claim
35 words
The composite material of claim 1 wherein the plastic sheet is a homogeneous polyurethane with a weight per square meter of 20-80 g/m 2 and a tensile strength of at least 40 kg/cm 2 .
Claim 4
Dependent Claim
13 words
The composite material of claim 1 wherein the plastic sheet is microporous polyurethane.
Claim 5
Dependent Claim
25 words
The composite material of claim 1 wherein the plastic sheet is a polyvinyl chloride having a weight per square meter of 100-300 g/m 2 .
Claim 6
Dependent Claim
35 words
The composite material of claim 1 wherein an additional layer of woven or knitted textile or non-woven fiber material is adhered to the surface of said latex foam which is distant from said plastic sheet.
Claim 7
Dependent Claim
56 words
The composite material of claim 1 wherein the ionomeric polyurethane dispersion has a. a solids content of 48 to 55% based on the weight of the polyurethane b. a viscosity of 20 to 50 seconds outflow time from a Ford measuring cup with 4 mm nozzle. c. a particle diameter of 0.07 μ to 0.30 μ.
Claim 8
Dependent Claim
62 words
The composite material of claim 1 wherein the polyurethane dispersion contains a. 3-8% by weight of foam stabilizing agent, based on the polyurethane content; b. 15-60% by weight, of inorganic fillers, based on the polyurethane solid content. c. 5-12% by weight of cross-linking agent based on the polyurethane solid content; d. 1.0-5.0% by weight of thickeners based on the polyurethane solid content.
References Cited (Backward Citations)
US3461103A
Cited
US3437197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |