US4110508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam sheet and method
Assignee: WR Grace and Co
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Filing: 1976-02-09
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Granted: 1978-08-29
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Expires: 1996-02-09
Abstract
Abstract The invention disclosed is for a foam sheet fabric prepared using a hydrophilic crosslinked polyurethane component prepared by reacting an isocyanate capped polyoxyethylene polyol reactant with large amounts of an aqueous reactant. The resultant fabrics may be characterized with a broad spectrum of improved properties including improved comfort, moisture control, ease of processing and may contain selective additives such as fibers, fire retardants or the like.
Inventors
- 👤 Irving E. Isgur
- 👤 Andrew B. Holmstrem
- 👤 Norman J. Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:56
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/245; B32B5/18; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2305/00; B32B2305/02; B32B2305/026; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249954; Y10T428/25; Y10T428/254; Y10T442/00; Y10T442/30; Y10T442/3325; Y10T442/3366; Y10T442/3374; Y10T442/60; Y10T442/647; Y10T442/652; Y10T442/653
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
188 words
A composite which comprises in combination, a fabric consisting essentially of a porous woven or non-woven fibrous web and a hydrophilic crosslinked polyurethane layered thereon having a three-dimensional network, said polyurethane comprising shredded foam particles, said foam being the reaction product of a resin component and an aqueous reactant, said resin component comprising isocyanate-capped polyoxyethylene polyol having a reaction functionality greater than two, and a second component comprising aqueous reactant, the water index value being about 1,300 to about 78,000 H 2 0 and wherein the capped polyoxyethylene polyol is present in the first component in an amount from about 3% by weight up to 100% by weight, wherein the capped polyoxyethylene polyol having a terminal member with an isocyanate functionality of two is present in an amount from 0% up to about 97% by weight, wherein the polyoxyethylene polyol moiety of the isocyanate capped member has a weight average molecular weight of about 200 to about 20,000 and a hydroxyl functionality of about 2 to about 8, and wherein the average particle size of the foam particles is about 0.02 inch mesh to about 0.12 inch mesh.
Claim 2
Dependent Claim
188 words
A composite which comprises in combination, a fabric consisting essentially of a porous woven or non-woven fibrous web and a hydrophilic crosslinked polyurethane layered thereon having a three-dimensional network, said polyurethane comprising shredded foam particles, said foam being the reaction product of a resin component and an aqueous reactant, said resin component comprising isocyanate-capped polyoxyethylene polyol having a reaction functionality greater than two, and a second component comprising aqueous reactant, the water index value being about 1,300 to about 78,000 H 2 0 and wherein the capped polyoxyethylene polyol is present in the first component in an amount from about 3% by weight up to 100% by weight, wherein the capped polyoxyethylene polyol having a terminal member with an isocyanate functionality of two is present in an amount from 0% up to about 97% by weight, wherein the polyoxyethylene polyol moiety of the isocyanate capped member has a weight average molecular weight of about 200 to about 20,000 and a hydroxyl functionality of about 2 to about 8, and wherein the average particle size of the foam particles is about 0.02 inch mesh to about 0.12 inch mesh.
Claim 3
Dependent Claim
17 words
The composite of claim 1 wherein the weight average molecular weight is about 600 to about 6,000.
Claim 4
Dependent Claim
27 words
The composite of claim 1 wherein the aqueous reactant is a member of the group consisting of water, water slurry, water suspension, water emulsion and water solution.
Claim 5
Dependent Claim
16 words
The composite of claim 1 wherein the water index value is about 4,000 to about 40,000.
Claim 6
Dependent Claim
47 words
The composite of claim 1 wherein the aqueous reactant additionally comprises a member selected from the group consisting of a sound deadening agent, flame retardant, organic solvent, blowing agent, antistat, soil repellant, fungicide, insecticide, thickening agent, dispersing agent, resin, polymer filler, biostats, color additive and the like.
Claim 7
Dependent Claim
16 words
The composite of claim 1 wherein the fabric is woven or non-woven, synthetic or natural fibers.
Claim 8
Dependent Claim
133 words
A composite which comprises in combination a fabric consisting essentially of a porous woven or non-woven fibrous web and a hydrophilic crosslinked polyurethane layered thereon having a three-dimensional network, said polyurethane being comprised of shredded particles and the reaction product of a resin component and an aqueous reactant, said resin component comprising isocyanate capped polyoxyethylene polyol having a reaction functionality equal to about two, a second component comprising aqueous reactant, and a third component comprising a crosslinking agent having a reaction functionality greater than two, wherein the polyoxyethylene polyol moiety of the isocyanate capped member has a weight average molecular weight of about 200 to about 20,000, and a hydroxyl functionality of about 2 to about 8, and wherein the average particle size is about 0.02 inch mesh to about 0.12 inch mesh.
Claim 9
Dependent Claim
133 words
A composite which comprises in combination a fabric consisting essentially of a porous woven or non-woven fibrous web and a hydrophilic crosslinked polyurethane layered thereon having a three-dimensional network, said polyurethane being comprised of shredded particles and the reaction product of a resin component and an aqueous reactant, said resin component comprising isocyanate capped polyoxyethylene polyol having a reaction functionality equal to about two, a second component comprising aqueous reactant, and a third component comprising a crosslinking agent having a reaction functionality greater than two, wherein the polyoxyethylene polyol moiety of the isocyanate capped member has a weight average molecular weight of about 200 to about 20,000, and a hydroxyl functionality of about 2 to about 8, and wherein the average particle size is about 0.02 inch mesh to about 0.12 inch mesh.
Claim 10
Dependent Claim
17 words
The composite of claim 7 wherein the weight average molecular weight is about 600 to about 6,000.
Claim 11
Dependent Claim
27 words
The composite of claim 7 wherein the aqueous reactant is a member of the group consisting of water, water slurry, water suspension, water emulsion and water solution.
Claim 12
Dependent Claim
17 words
The composite of claim 7 wherein the water index value is from about 4,000 to about 40,000.
Claim 13
Dependent Claim
47 words
The composite of claim 7 wherein the aqueous reactant additionally comprises a member selected from the group consisting of a sound deadening agent, flame retardant, organic solvent, blowing agent, antistat, soil repellant, fungicide, insecticide, thickening agent, dispersing agent, resin, polymer, filler biostats, color additive and the like.
Claim 14
Dependent Claim
16 words
The composite of claim 7 wherein the crosslinking agent of the third component is a polyol.
Claim 15
Dependent Claim
16 words
The composite of claim 7 wherein the crosslinking agent of the third component is a polyamine.
Claim 16
Dependent Claim
16 words
The composite of claim 7 wherein the crosslinking agent of the third coponent is a polythiol.
Claim 17
Dependent Claim
16 words
The composite of claim 7 wherein the crosslinking agent of the third component is a polyisocyanate.
Claim 18
Independent Claim
171 words
A method for preparing a composite which comprises reacting a first component comprising isocyanate capped polyoxyethylene polyol having a reaction functionality greater than two, with a second component comprising aqueous reactant, the water index value being about 1,300 to about 78,000 H 2 O and wherein the capped polyoxyethylene polyol is present in the first component in an amount from about 3% by weight up to 100% by weight, wherein a capped polyoxyethylene polyol having a terminal member with an isocyanate functionality of two is present in an amount from 0% up to about 97% by weight, wherein the polyoxyethylene polyol moiety of the isocyanate capped member has a weight average molecular weight of about 200 to about 20,000, and a hydroxyl functionality of about 2 to about 8, shredding the generated foam product of the reaction to an average particle size of about 0.02 inch mesh to about 0.12 inch mesh and layering the shredded particles onto a fabric substrate consisting essentially of a porous woven or non-woven fibrous web.
Claim 19
Independent Claim
171 words
A method for preparing a composite which comprises reacting a first component comprising isocyanate capped polyoxyethylene polyol having a reaction functionality greater than two, with a second component comprising aqueous reactant, the water index value being about 1,300 to about 78,000 H 2 O and wherein the capped polyoxyethylene polyol is present in the first component in an amount from about 3% by weight up to 100% by weight, wherein a capped polyoxyethylene polyol having a terminal member with an isocyanate functionality of two is present in an amount from 0% up to about 97% by weight, wherein the polyoxyethylene polyol moiety of the isocyanate capped member has a weight average molecular weight of about 200 to about 20,000, and a hydroxyl functionality of about 2 to about 8, shredding the generated foam product of the reaction to an average particle size of about 0.02 inch mesh to about 0.12 inch mesh and layering the shredded particles onto a fabric substrate consisting essentially of a porous woven or non-woven fibrous web.
Claim 20
Dependent Claim
17 words
The method of claim 16 wherein the weight average molecular weight is about 600 to about 6,000.
Claim 21
Independent Claim
120 words
A method for preparing a composite which comprises reacting a first component comprising isocyanate capped polyoxyethylene polyol having a reaction functionality equal to about two, a second component comprising aqueous reactant, and a third component comprising a crosslinking agent having a reaction functionality greater than two, wherein the polyoxyethylene polyol moiety of the isocyanate capped member has a weight average molecular weight of about 200 to about 20,000 and a hydroxyl functionality of about 2 to about 8, shredding the generated foam product of the reaction to an average particle size of about 0.02 inch mesh to about 0.12 inch mesh and layering the shredded particles onto a fabric substrate consisting essentially of a porous woven or non-woven fibrous web.
Claim 22
Independent Claim
120 words
A method for preparing a composite which comprises reacting a first component comprising isocyanate capped polyoxyethylene polyol having a reaction functionality equal to about two, a second component comprising aqueous reactant, and a third component comprising a crosslinking agent having a reaction functionality greater than two, wherein the polyoxyethylene polyol moiety of the isocyanate capped member has a weight average molecular weight of about 200 to about 20,000 and a hydroxyl functionality of about 2 to about 8, shredding the generated foam product of the reaction to an average particle size of about 0.02 inch mesh to about 0.12 inch mesh and layering the shredded particles onto a fabric substrate consisting essentially of a porous woven or non-woven fibrous web.
Claim 23
Dependent Claim
16 words
The method of claim 18 wherein the crosslinking agent of the third component is a polyamine.
Claim 24
Dependent Claim
16 words
The method of claim 18 wherein the crosslinking agent of the third component is a polythiol.
Claim 25
Dependent Claim
16 words
The method of claim 18 wherein the crosslinking agent of the third component is a polyisocyanate.
References Cited (Backward Citations)
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US3745041A
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US3694301A
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US3874964A
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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) | 1981-08-28 | 1982-02-27 | 1982-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-28 | 1986-02-27 | 1986-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-28 | 1990-02-27 | 1990-08-29 | $7700.00 | Window Closed / Lapsed |