US4190696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame resistant, gas resistant foam material
Assignee: Department of National Defence
•
Filing: 1978-11-07
•
Granted: 1980-02-26
•
Expires: 1998-11-07
Abstract
Abstract The invention disclosed relates to fire-resistant foam materials which are resistant to the passage therethrough of noxious chemicals in liquid or vapor form. The foam material includes an adsorbent material dispersed therein, an organic binder for the foam and a fire-retardant. The binder and fire-retardant are free of any substances which substantially de-activate the adsorbent.
Inventors
- 👤 John A. Hart
- 👤 Rolland P. Fuoco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:53
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/18; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1669; B01D39/1676; B01J; B01J20/00; B01J20/28; B01J20/28002; B01J20/28004; B01J20/28014; B01J20/28023; B01J20/2803; B01J20/28033; B01J20/28042; B01J20/28045; C; C08; C08J; C08J9/00; C08J9/36; C08J9/40; C08J9/42; D; D06; D06M; D06M11/00; D06M11/68; D06M11/70; D06M11/71; D06M11/72; D06M11/73; D06M11/74; D06M15/00; D06M15/19; D06M15/37; D06M15/564; B32B2264/00; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2307/70; B32B2307/724; B32B2307/7242; B32B2307/7246; B32B2437/00; C08J2421/00; C08J2429/00; C08J2433/00; Y; Y10; Y10S; Y10S2/00; Y10S2/90; Y10S428/00; Y10S428/92; Y10S428/921; Y10S521/00; Y10S521/906; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249986; Y10T428/25; Y10T442/00; Y10T442/30; Y10T442/3325; Y10T442/3366; Y10T442/3374
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
94 words
An air and water vapour permeable open cell solid resin foam resistant to passage therethrough of noxious chemicals in liquid or vapour form, said foam containing a particulate adsorbent material for said noxious chemicals dispersed therein, said particulate adsorbent material being bonded in said foam by an organic binder, and a fire-retarding agent selected from the group consisting of ammonium orthophosphate dibasic, ammonium orthophosphate monobasic, sodium orthophosphate dibasic, ammonium polyphosphate and calcium orthophosphate monobasic impregnated therein, wherein said binder and said fire-retarding agent are substantially free from any substances which substantially de-activate the adsorbent.
Claim 2
Dependent Claim
94 words
An air and water vapour permeable open cell solid resin foam resistant to passage therethrough of noxious chemicals in liquid or vapour form, said foam containing a particulate adsorbent material for said noxious chemicals dispersed therein, said particulate adsorbent material being bonded in said foam by an organic binder, and a fire-retarding agent selected from the group consisting of ammonium orthophosphate dibasic, ammonium orthophosphate monobasic, sodium orthophosphate dibasic, ammonium polyphosphate and calcium orthophosphate monobasic impregnated therein, wherein said binder and said fire-retarding agent are substantially free from any substances which substantially de-activate the adsorbent.
Claim 3
Dependent Claim
11 words
A foam according to claim 1, which is a flexible foam.
Claim 4
Dependent Claim
13 words
A foam according to claim 2, wherein the foam is a polyurethane foam.
Claim 5
Dependent Claim
15 words
A foam according to claim 3, wherein the polyurethane foam is of the polyester type.
Claim 6
Dependent Claim
35 words
A foam according to claim 3 or 4, wherein the polyurethane foam is made by reaction of an isocyanate with a polyol in which phosphorus, nitrogen or a halogen is part of the polyol molecule.
Claim 7
Dependent Claim
27 words
A foam according to claim 1 or 2, wherein the foam is selected from the group consisting of foams of polystyrene, vinyl polymer, cellulose resin and polyether.
Claim 8
Dependent Claim
13 words
A foam according to claim 1, wherein the adsorbent material comprises activated carbon.
Claim 9
Dependent Claim
20 words
A foam according to claim 7, wherein the activated carbon has a particle size of about 5 to 15 microns.
Claim 10
Dependent Claim
20 words
A foam according to claim 8, wherein the activated carbon comprises about 5 to 12 mg/cm 2 of said foam.
Claim 11
Dependent Claim
24 words
A foam according to claim 9, wherein the organic binder is selected from the group consisting of natural rubber, synthetic rubbers, polyethylacrylate and polyvinylacetate.
Claim 12
Dependent Claim
29 words
A foam according to claim 10, wherein the amount of the binder in said foam is about 15 to 100 parts per 100 parts by weight of activated carbon.
Claim 13
Dependent Claim
16 words
A foam according to claim 11, bonded to an air and water vapour permeable fabric backing.
Claim 14
Dependent Claim
15 words
A foam according to claim 12, wherein the fabric is a knitted or woven fabric.
Claim 15
Dependent Claim
16 words
A foam according to claim 13, wherein the fabric is made from flame resistant fibre material.
Claim 16
Dependent Claim
15 words
A foam according to claim 12 or 13, where the fabric is made of polyacrylonitrile.
Claim 17
Dependent Claim
112 words
A laminated fabric material comprising an air and water vapour-permeable open cell solid resin foam resistant to passage therethrough of noxious chemicals in liquid or vapour form, said foam containing a particulate adsorbent material for the noxious chemicals dispersed therein, the particulate adsorbent material being bonded in said foam by an organic binder and a fire-retarding agent selected from the group consisting of ammonium orthophosphate dibasic, ammonium orthophosphate monobasic, sodium orthophosphate dibasic, ammonium polyphosphate and calcium orthophosphate monobasic impregnated therein, wherein said binder and said fire-retarding agent are substantially free from substances which would substantially deactivate said adsorbent material, and an air-and water vapour-permeable fabric backing to which the foam is bonded.
Claim 18
Dependent Claim
112 words
A laminated fabric material comprising an air and water vapour-permeable open cell solid resin foam resistant to passage therethrough of noxious chemicals in liquid or vapour form, said foam containing a particulate adsorbent material for the noxious chemicals dispersed therein, the particulate adsorbent material being bonded in said foam by an organic binder and a fire-retarding agent selected from the group consisting of ammonium orthophosphate dibasic, ammonium orthophosphate monobasic, sodium orthophosphate dibasic, ammonium polyphosphate and calcium orthophosphate monobasic impregnated therein, wherein said binder and said fire-retarding agent are substantially free from substances which would substantially deactivate said adsorbent material, and an air-and water vapour-permeable fabric backing to which the foam is bonded.
Claim 19
Dependent Claim
22 words
A laminated fabric material according to claim 16, wherein the fire-retarding agent is adsorbed on activated carbon only to a limited extent.
Claim 20
Dependent Claim
21 words
A laminated fabric material according to claim 16 or 17 wherein said fabric backing is made from a fire-resistant fibre material.
Claim 21
Dependent Claim
20 words
A laminated fabric according to claim 16 or 17 wherein the laminated fabric is in the form of a garment.
Claim 22
Dependent Claim
14 words
A laminated fabric according to claim 16, wherein said foam is a polyurethane foam.
References Cited (Backward Citations)
US2984584A
Cited
US3131115A
Cited
US3238056A
Cited
US3586596A
Cited
US4045609A
Cited
US3966521A
Cited
US4099943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |