Patent US4657938A successfully refreshed from Google Patents.
US4657938A
Expired / Lapsed
US
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Sprayable and foamable insulating composition
Assignee: Uniroyal Chemical Co Inc
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Filing: 1985-08-26
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Granted: 1987-04-14
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Expires: 2005-08-26
Abstract
Abstract A sprayable and foamable insulating composition comprising: (A) at least one low molecular weight polymer selected from the group consisting of ethylene/alphaolefin copolymer, ethylene/alphaolefin/nonconjugated polyene terpolymer, polyacrylate, polymethacrylate, polyisoprene, polyacrylonitrile, polymethacrylonitrile and polybutadiene; (B) an effective amount of curative; and (C) an effective amount of a blowing agent having an activation temperature which is less than or about equal to the curing temperature of component (B), said composition having a Brookfield viscosity of about 100,000 centipoise or less at shear rates of 5 sec -1 or greater. A process for providing a layer of insulating foam employing such composition is also disclosed.
Inventors
- 👤 Luke E. Fithian
- 👤 Frank C. Cesare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:16
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20; C08L23/22; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08J9/102; C08J9/103; B; B05; B05D; B05D7/00; B05D7/24; C08J9/0014; C08K; C08K3/00; C08K3/02; C08K3/04; C08J2323/00; C08J2323/02; C08J2323/16; C08K3/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
101 words
A sprayable non aqueous and foamable composition comprising: (A) at least one polymer selected from the group consisting of ethylene/alphaolefin copolymer, ethylene/alphaolefin/nonconjugated polyene terpolymer, polyacrylate, polymethacrylate, polyisoprene, polyacrylonitrile, polymethacrylonitrile and polybutadiene; said polymer having a number average molecular weight of between about 500 and about 10,000; (B) an effective amount of organic peroxide curative; and (C) an effective amount of a blowing agent having an activation temperature which less than or about equal to the curing temperature of component (B); said composition possessing a Brookfield viscosity of less than about 100,000 centipoise at shear rates of 5 sec -1 or greater.
Claim 2
Dependent Claim
101 words
A sprayable non aqueous and foamable composition comprising: (A) at least one polymer selected from the group consisting of ethylene/alphaolefin copolymer, ethylene/alphaolefin/nonconjugated polyene terpolymer, polyacrylate, polymethacrylate, polyisoprene, polyacrylonitrile, polymethacrylonitrile and polybutadiene; said polymer having a number average molecular weight of between about 500 and about 10,000; (B) an effective amount of organic peroxide curative; and (C) an effective amount of a blowing agent having an activation temperature which less than or about equal to the curing temperature of component (B); said composition possessing a Brookfield viscosity of less than about 100,000 centipoise at shear rates of 5 sec -1 or greater.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein component (A) is selected from the group consisting of ethylene/ alphaolefin copolymer and ethylene/alphaolefin/non-conjugated polyene terpolymer.
Claim 4
Dependent Claim
19 words
The composition of claim 1 wherein the molecular weight of polymer (A) is between about 1,000 and about 10,000.
Claim 5
Dependent Claim
19 words
The composition of claim 3 wherein the molecular weight of polymer (A) is between about 4,000 and about 7,000.
Claim 6
Dependent Claim
30 words
The composition of claim 1 wherein component (B) is present in an amount of between about 0.5 and about 5.0 parts by weight per 100 parts by weight of polymer.
Claim 7
Dependent Claim
30 words
The composition of claim 1 wherein component (C) is present in an amount of between about 0.1 and about 10 parts by weight per 100 parts by weight of polymer.
Claim 8
Dependent Claim
12 words
The composition of claim 1 wherein said composition further comprises a filler.
Claim 9
Dependent Claim
27 words
The composition of claim 1 wherein said composition possesses a Brookfield viscosity of less than about 75,000 centipoise at shear rates of 5 sec -1 or greater.
Claim 10
Dependent Claim
27 words
The composition of claim 1 wherein said composition possesses a Brookfield viscosity of less than about 50,000 centipoise at shear rates of 5 sec -1 or greater.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1990-04-13 | 1990-10-13 | 1991-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-13 | 1994-10-13 | 1995-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-13 | 1998-10-13 | 1999-04-14 | $7700.00 | Window Closed / Lapsed |