US4892891A
Expired / Lapsed
US
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Novel foam compositions
Assignee: SYN-COAT ENTERPRISES A CORP OF OH
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Filing: 1988-12-02
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Granted: 1990-01-09
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Expires: 2008-12-02
Abstract
Abstract Foam compositions with improved physical characteristics are from urethane prepolymers in the presence of various modifying agents. Blowing agents employed in the presence of surfactants make it possible to obtain either open or closed cell structures, and the degree of foam stiffness may be desirably controlled with polyols, as well as with polymeric polymethylene polyphenylisocyanates. Suitable modifying agents include asphalts, portland cement, epichlorohydrin, other epoxidized compounds, additional polymers, and various other materials.
Inventors
- 👤 Donald S. Close
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:24
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/83; C08G18/831; C04; C04B; C04B26/00; C04B26/02; C04B26/10; C04B26/16; C04B28/00; C04B28/14; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/64; C08G18/6476; C04B2201/00; C04B2201/20; C08G2110/00; C08G2110/0083; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
47 words
A product obtained by the process comprising reacting polymerizable components which include a polyurethane prepolymer in the presence of a blowing agent, and at least one modifying agent, said modifying agent including portland cement, asphalt, epichlorohydrin, a silicone, or mixtures of at least two of the preceding.
Claim 2
Dependent Claim
47 words
A product obtained by the process comprising reacting polymerizable components which include a polyurethane prepolymer in the presence of a blowing agent, and at least one modifying agent, said modifying agent including portland cement, asphalt, epichlorohydrin, a silicone, or mixtures of at least two of the preceding.
Claim 3
Dependent Claim
15 words
A product according to claim 1 wherein said polyurethane prepolymer is a polyisocyanate terminated polyether.
Claim 4
Dependent Claim
21 words
A product according to claim 1 wherein one of said polymerizable components is a polyol containing at least one amine group.
Claim 5
Dependent Claim
20 words
A product according to claim 1 wherein one of the polymerizable components is a polymethylene polyphenylisocyanate that contains di-para-phenylene phenylisocyanate.
Claim 6
Dependent Claim
17 words
A product according to claim 1 wherein during the reaction there is also present an acrylic-containing emulsion.
Claim 7
Dependent Claim
12 words
A product according to claim 1 wherein said blowing agent is water.
Claim 8
Dependent Claim
43 words
A process comprising reacting polymerizable components which include a polyurethane prepolymer in the presence of a blowing agent, and at least one modifying agent, said modifying agent including portland cement, asphalt, epichlorohydrin, a silicone, or mixtures of at least two of the preceding.
Claim 9
Dependent Claim
43 words
A process comprising reacting polymerizable components which include a polyurethane prepolymer in the presence of a blowing agent, and at least one modifying agent, said modifying agent including portland cement, asphalt, epichlorohydrin, a silicone, or mixtures of at least two of the preceding.
Claim 10
Dependent Claim
14 words
The process according to claim 7 wherein said polyurethane prepolymer is a polyisocyanate polyether.
Claim 11
Dependent Claim
18 words
The process of claim 7 wherein said blowing agent is water, and said modifying agent is portland cement.
Claim 12
Dependent Claim
17 words
The process of claim 7 wherein said blowing agent is water and said modifying agent is asphalt.
Claim 13
Dependent Claim
66 words
A non-water soluble polyurethane foam, said foam being the reaction product in the presence of a blowing agent of an organic polyisocyanate and water soluble polyalkylene ether polyol which normally gives a water swellable foam but said reaction product is modified by reacting said organic polyisocyanate and said polyalkylene polyol in the presence of a modifying agent to form a foam which is not water swellable.
Claim 14
Dependent Claim
66 words
A non-water soluble polyurethane foam, said foam being the reaction product in the presence of a blowing agent of an organic polyisocyanate and water soluble polyalkylene ether polyol which normally gives a water swellable foam but said reaction product is modified by reacting said organic polyisocyanate and said polyalkylene polyol in the presence of a modifying agent to form a foam which is not water swellable.
Claim 15
Dependent Claim
50 words
The non-water swellable polyurethane foam of claim 11 wherein the polyalkylene ether polyol contains alkylene groups having 2 to 3 carbon atoms with the proviso that when some of the alkylene groups contain 3 carbon atoms the rest must contain 2 carbon atoms in the amount of at least 45%.
Claim 16
Dependent Claim
22 words
The foam of claim 12 wherein the organic polyisocyanate is selected from the class consisting of toluene diisocyanate and methane di(phenylene isocyanate).
Claim 17
Dependent Claim
65 words
A laminated foam product having at least one surface of a polyurethane foam adhered to essentially a planular member, said polyurethane foam being a reaction product of a water soluble polyalkylene ether polyol and an organic polyisocyanate in the presence of a blowing agent and a modifying agent to change the foam from a highly water swellable one to one that is non water swellable.
Claim 18
Dependent Claim
65 words
A laminated foam product having at least one surface of a polyurethane foam adhered to essentially a planular member, said polyurethane foam being a reaction product of a water soluble polyalkylene ether polyol and an organic polyisocyanate in the presence of a blowing agent and a modifying agent to change the foam from a highly water swellable one to one that is non water swellable.
Claim 19
Dependent Claim
22 words
The laminated foam product of claim 14 wherein the planular member is a sheet or film of a plastic, metal or cellulose.
Claim 20
Dependent Claim
31 words
The non-water swellable polyurethane foam of claim 11 wherein the organic polyisocyanate is a diisocyanate and the polyol contains less than 10% by weight of a tri or high functional polyol.
Claim 21
Dependent Claim
14 words
The non-water swellable polyurethane foam of claim 11 wherein the modifying agent is bitumen.
Claim 22
Dependent Claim
60 words
A laminate composed of at least one planular member bonded to a polyurethane foam that has had its ability to swell in water, changed by the organic polyisocyanate reacting with a reactive hydrogen containing material by reacting in the presence of sufficient modifying agent to render the foam essentially non-water swellable in water at about 75° F. for 10 minutes.
Claim 23
Dependent Claim
60 words
A laminate composed of at least one planular member bonded to a polyurethane foam that has had its ability to swell in water, changed by the organic polyisocyanate reacting with a reactive hydrogen containing material by reacting in the presence of sufficient modifying agent to render the foam essentially non-water swellable in water at about 75° F. for 10 minutes.
Claim 24
Dependent Claim
18 words
The laminate of claim 18 wherein the foam does not exhibit water swellability after one hour in water.
Claim 25
Dependent Claim
33 words
The laminate of claim 18 wherein the polyurethane foam is the reaction product of a polyalkylene ether polyol whose alkylene group is at least 40% ethylene groups, an excess organic polyisocyanate and water.
Claim 26
Dependent Claim
20 words
The laminate of claim 20 wherein the modifying agent is selected from the class of fly ash, cement and bitumens.
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) | 1993-01-08 | 1993-07-10 | 1994-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-08 | 1997-07-10 | 1998-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-08 | 2001-07-10 | 2002-01-09 | $7700.00 | Window Closed / Lapsed |