US3926700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular-urethane backed carpet
Assignee: General Latex and Chemical Corp
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Filing: 1973-04-13
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Granted: 1975-12-16
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Expires: 1993-04-13
Abstract
Abstract A sheet material which comprises in combination: a backing sheet and a layer of a cured, flexible, elastomeric, cellular-urethane resin securely and directly bonded to one surface of the backing sheet, the urethane resin containing in combination a silicone fluid surfactant in an amount to aid in uniform cell structure, a catalyst to control the rate of cure, and from about 0.1 to 5.0 percent by weight of a moisture-scavenging agent, the cellular layer characterized by being composed of essentially uniform, open and interconnecting cells, and the exposed foam surface characterized by a smooth thin skin resin layer substantially free of craters, pimples and ridges therein.
Inventors
- 👤 Jr Henry S Hopkins
- 👤 Philip L Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:49
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/30; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/088; C08G18/0885; C08J9/0004; C08K; C08K3/00; C08K3/01; C08K3/015; D; D06; D06N; D06N7/00; D06N7/0063; D06N7/0071; C08J2375/00; C08J2375/04; D06N2201/00; D06N2201/02; D06N2201/0254; D06N2203/00; D06N2203/06; D06N2203/068; D06N2205/00; D06N2205/04; D06N2205/10; D06N2205/20; D06N2207/00; D06N2207/08; D06N2209/00; D06N2209/16; D06N2209/1664; Y; Y10; Y10S; Y10S264/00; Y10S264/14; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23979; Y10T428/23986; Y10T428/249921; Y10T428/249953; Y10T428/249971; Y10T428/249972; Y10T428/249986
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
113 words
A SHEET MATERIAL WHICH COMPRISES IN COMBINATION: A FIBROUS BACKING SHEET AND A LAYER OF A CURED, FLEXIBLE, ELASTOMERIC, CELLULAR URETHANE RESIN SECURELY AND DIRECTLY BONDED TO THE FIBERS ON ONE SURFACE OF THE BACKING SHEET, THE URETHANE RESIN CONTAINING IN COMBINATION: A. A SILICONE FLUID SURFACTANT IN AN AMOUNT TO AID IN UNIFORM CELL STRUCTURE; B. A CATALYST TO CONTROL THE RATE OF CURE; AND C. FROM ABOUT 0.1 TO 5.0 PERCENT BY WEIGHT OF A MOISTURESCAVENGING AGENT, THE CELLULAR LAYER CHARACTERIZED BY BEING COMPOSED OF ESSENTIALLY UNIFORM, OPEN AND INTERCONNECTING CELLS, THE EXPOSED FOAM SURFACE CHARACTERIZED BY A SMOOTH THIN SKIN RESIN LAYER SUBSTANTIALLY FREE OF CREATERS, PIMPLES AND RIDGES THEREIN.
Claim 2
Dependent Claim
113 words
A SHEET MATERIAL WHICH COMPRISES IN COMBINATION: A FIBROUS BACKING SHEET AND A LAYER OF A CURED, FLEXIBLE, ELASTOMERIC, CELLULAR URETHANE RESIN SECURELY AND DIRECTLY BONDED TO THE FIBERS ON ONE SURFACE OF THE BACKING SHEET, THE URETHANE RESIN CONTAINING IN COMBINATION: A. A SILICONE FLUID SURFACTANT IN AN AMOUNT TO AID IN UNIFORM CELL STRUCTURE; B. A CATALYST TO CONTROL THE RATE OF CURE; AND C. FROM ABOUT 0.1 TO 5.0 PERCENT BY WEIGHT OF A MOISTURESCAVENGING AGENT, THE CELLULAR LAYER CHARACTERIZED BY BEING COMPOSED OF ESSENTIALLY UNIFORM, OPEN AND INTERCONNECTING CELLS, THE EXPOSED FOAM SURFACE CHARACTERIZED BY A SMOOTH THIN SKIN RESIN LAYER SUBSTANTIALLY FREE OF CREATERS, PIMPLES AND RIDGES THEREIN.
Claim 3
Dependent Claim
13 words
The material of claim 1 wherein the moisturescavenging agent comprises molecular sieve particles.
Claim 4
Dependent Claim
21 words
The material of claim 1 wherein the resin contains from about 0.5 to 2.0 percent by weight of the moisturescavenging agent.
Claim 5
Dependent Claim
17 words
The material of claim 1 wherein the moisturescavenging agent comprises a 4A or 5A molecular sieve material.
Claim 6
Dependent Claim
48 words
The material of claim 1 which includes a release sheet material in contact with the exposed surface of the cellular layer, the surface of the release sheet material contacting the cellular layer having surface characteristics which enable the release sheet to be easily removed from the cellular surface.
Claim 7
Dependent Claim
23 words
The material of claim 5 wherein the release sheet material is a polymer-coated paper sheet or a sheet of a C2-C4 olefinic resin.
Claim 8
Dependent Claim
27 words
The material of claim 1 wherein the resin contains from about 0.05 to 1.0 percent by weight of a nucleating agent to provide regular and fine-size cells.
Claim 9
Dependent Claim
15 words
The material of claim 1 wherein the backing sheet material is a fabric sheet material.
Claim 10
Dependent Claim
18 words
The material of claim 1 wherein the cellular layer is composed of over 90 percent open, interconnecting cells.
Claim 11
Dependent Claim
23 words
The material of claim 1 wherein the urethane resin includes from about 1.0 to 5.0 percent by weight of a silicone fluid surfactant.
Claim 12
Dependent Claim
56 words
The material of claim 1 wherein the backing sheet comprises a scrim sheet hAving a face surface composed of a plurality of tufted fibers, the fibers secured to the scrim sheet and the urethane layer bonded directly to the back surface of the scrim sheet and to the back of the tufted fibers on such surface.
Claim 13
Dependent Claim
15 words
The material of claim 11 wherein the tufted fibers are composed of olefinic resin fibers.
Claim 14
Dependent Claim
28 words
The material of claim 1 wherein the cellular foam layer meets or exceeds a maximum of 15% loss in compression set when measured by ASTM D1055 and 1056.
Claim 15
Dependent Claim
21 words
The material of claim 1 wherein the resin includes from about 0.05 to 1.0 percent by weight of finely divided silica.
Claim 16
Dependent Claim
44 words
The material of claim 1 wherein the elastomeric urethane resin is a reaction product of a diisocyanate and a liquid polyol having a hydroxyl number of from about 25 to 1000, the cured elastomer characterized when cured by being rubbery and elastomeric in properties.
Claim 17
Dependent Claim
141 words
A tufted carpet, which carpet comprises in combination: a scrim sheet material, fibers secured through the scrim sheet material to form a fibrous face surface on the scrim sheet material, and an exposed back surface of such fibers and a layer of a cured flexible elastomeric cellular urethane resin securely and directly bonded to the back surface of the scrim sheet material and the fibers on such back surface, the urethane resin containing in combination: a. a silicone fluid surfactant in an amount to aid in uniform cell structure; b. a catalyst to control the rate of cure; and c. from about 0.1 to 5.0 percent by weight of molecular sieve particles therein as a moisture-scavenging agent, the moisture content of the resin less than 0.05% moisture, the cellular layer characterized by being composed of essentially uniform, open and interconnecting cells.
Claim 18
Dependent Claim
141 words
A tufted carpet, which carpet comprises in combination: a scrim sheet material, fibers secured through the scrim sheet material to form a fibrous face surface on the scrim sheet material, and an exposed back surface of such fibers and a layer of a cured flexible elastomeric cellular urethane resin securely and directly bonded to the back surface of the scrim sheet material and the fibers on such back surface, the urethane resin containing in combination: a. a silicone fluid surfactant in an amount to aid in uniform cell structure; b. a catalyst to control the rate of cure; and c. from about 0.1 to 5.0 percent by weight of molecular sieve particles therein as a moisture-scavenging agent, the moisture content of the resin less than 0.05% moisture, the cellular layer characterized by being composed of essentially uniform, open and interconnecting cells.
Claim 19
Dependent Claim
15 words
The carpet of claim 16 wherein the fibers are composed of polyethylene or polypropylene fibers.
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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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |