US5032623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rigid foams using CHClF2 as a blowing agent
Assignee: Foam Supplies Inc
•
Filing: 1989-07-24
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Granted: 1991-07-16
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Expires: 2009-07-24
Abstract
Abstract A method for preparation of rigid foam disclosed. The method comprises mixing at least two components to form a reaction mixture. The reaction mixture comprises isocyanate, up to about 20% by weight CHClF 2 , up to about 2% by weight of water, and a combination of polyols having an average OH number of from about 300 to about 500 and comprising polyalkoxylated glycerin having an OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to about three carbon atoms. Related methods and compositions are also disclosed.
Inventors
- 👤 David G. Keske
- 👤 Mark S. Schulte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:02
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/143; C08J9/144; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4804; C08G18/482; C08G18/4829; C08G18/487; C08G18/4883; C08G18/50; C08G18/5021; C08G2110/00; C08G2110/0025; C08G2115/00; C08G2115/02; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
91 words
A method for preparation of rigid polyurethane foam, comprising mixing at least two components to form a reaction mixture comprising: (a) isocyanate, (b) from about 1% to about 20% by weight CHClF 2 , (c) up to about 2% by weight of water, and (d) a combination of polyols having an average OH number of from about 300 to about 500 and comprising olyalkoxylated glycerin having an OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to about three carbon atoms.
Claim 2
Independent Claim
91 words
A method for preparation of rigid polyurethane foam, comprising mixing at least two components to form a reaction mixture comprising: (a) isocyanate, (b) from about 1% to about 20% by weight CHClF 2 , (c) up to about 2% by weight of water, and (d) a combination of polyols having an average OH number of from about 300 to about 500 and comprising olyalkoxylated glycerin having an OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to about three carbon atoms.
Claim 3
Dependent Claim
115 words
A method as set forth in claim 1 wherein said combination of polyols comprises a first polyol constituent, which comprises a polyalkoxylated amine having an average OH number of from about 500 to about 700 and in which the alkoxy groups each have from two to three carbon atoms, a second polyol constituent, which comprises a sucrose-based polyol having an average OH number of from about 300 to about 400 and an average functionality of at least about 3, and a third polyol constituent, which comprises polyalkoxylated glycerin having an average OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to about three carbon atoms.
Claim 4
Dependent Claim
47 words
A method as set forth in claim 2 wherein said polyalkoxylated amine is a polyalkoxylated monoamine and the second constituent of the combination of polyols of component B further comprises an additional polyol selected from the group consisting of ethylene glycol based polyols and glycerin based polyols.
Claim 5
Dependent Claim
65 words
A method as set forth in claim 2 wherein said polyalkoxylated amine is a polyalkoxylated monoamine and said combination of polyols comprises from about 4% by weight to about 15% by weight of said first constituent, from about 35% by weight to about 65% by weight of said second constituent, and from about 25% by weight to about 45% by weight of said third constituent.
Claim 6
Dependent Claim
42 words
A method as set forth in claim 1 wherein said isocyanate and said combination of polyols are present in said mixture in a relative proportion such that the ratio of NCO groups to OH groups is from about 1:1 to about 1.8:1.
Claim 7
Dependent Claim
49 words
A method as set forth in claim 1 wherein said foam is an isocyanurate foam and said isocyanate and said combination of polyols are present in said mixture in a relative proportion such that the ratio of NCO groups to OH groups is from about 2:1 to about 3:1.
Claim 8
Dependent Claim
23 words
A method as set forth in claim 2 wherein said polyalkoxylated amine is a polyalkoxylated monoamine and said mixture further comprises a surfactant.
Claim 9
Dependent Claim
160 words
A method as set forth in claim 1 wherein said mixing of at least two components to form a reaction mixture is carried out by mixing a component A with a component B, component A comprising isocyanate, and component B comprising (a) from about 65% by weight to about 95% by weight, based on total component B, of a combination of polyols having an average OH number of from about 300 to about 500 and comprising polyalkoxylated glycerin having an average OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to about three carbon atoms; (b) from about 0.5% by weight to about 3% by weight of water, based on total component B; (c) up to about 5% by weight of water/isocyanate reaction catalyst, based on total component B; and (d) from about 5% by weight to about 15% by weight of CHClF 2 , based on total component B.
Claim 10
Dependent Claim
181 words
A method as set forth in claim 1 wherein said mixing of at least two components to form a reaction mixture is carried out by mixing a component A with a component B, component A comprising isocyanate, from about 0.5% by weight to about 12% by weight CHClF 2 , based on total component A, and a surfactant, and component B comprising (a) from about 65% by weight to about 95% by weight, based on total component B, of a combination of polyols having an average OH number of from about 300 to about 500 and comprising polyalkoxylated glycerin having an average OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to about three carbon atoms; (b) from about 0.5% by weight to about 3% by weight of water, based on total component B; (c) up to about 5% by weight of water/isocyanate reaction catalyst, based on total component B; and (d) from about 1% by weight to about 15% by weight of CHClF 2 , based on total component B.
Claim 11
Dependent Claim
123 words
A method as set forth in claim 1 wherein said mixing of at least two components to form a reaction mixture is carried out by mixing a component A with CHClF 2 and with a component B, component A comprising isocyanate, component B comprising (a) at least about 90% by weight, based on total component B, of a combination of polyols having an average OH number of from about 300 to about 500 and comprising polyalkoxylated glycerin having an average OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to about three carbon atoms, and (b) from about 0.5% by weight to about 3% by weight of water, based on total component B.
Claim 12
Dependent Claim
17 words
A method as set forth in claim 2 wherein said polyalkoxylated amine is a polyalkoxylated trifunctional amine.
Claim 13
Independent Claim
221 words
A method for preparation of rigid foam, comprising mixing a component A with a component B, component A comprising isocyanate, from about 0.5% by weight to about 12% by weight CHClF 2 based on total component A, and a surfactant, and component B comprising (a) from about 65% by weight to about 95% by weight, based on total component B, of a combination of polyols comprising a first polyol constituent, which comprises a polyalkoxylated amine having an average OH number of from about 500 to about 700 and in which the alkoxy groups each have from two to three carbon atoms, a second polyol constituent, which comprises a sucrose-based polyol having an average OH number of from about 300 to about 400 and an average functionality of at least about 3, and a third polyol constituent, which comprises polyalkoxylated glycerin having an average OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to three carbon atoms; (b) from about 0.5% by weight to about 3% by weight of water, based on total component B; (c) up to about 5% by weight of water/isocyanate reaction catalyst, based on total component B; and (d) from about 1% by weight to about 15% by weight of CHClF 2 , based on total component B.
Claim 14
Independent Claim
221 words
A method for preparation of rigid foam, comprising mixing a component A with a component B, component A comprising isocyanate, from about 0.5% by weight to about 12% by weight CHClF 2 based on total component A, and a surfactant, and component B comprising (a) from about 65% by weight to about 95% by weight, based on total component B, of a combination of polyols comprising a first polyol constituent, which comprises a polyalkoxylated amine having an average OH number of from about 500 to about 700 and in which the alkoxy groups each have from two to three carbon atoms, a second polyol constituent, which comprises a sucrose-based polyol having an average OH number of from about 300 to about 400 and an average functionality of at least about 3, and a third polyol constituent, which comprises polyalkoxylated glycerin having an average OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to three carbon atoms; (b) from about 0.5% by weight to about 3% by weight of water, based on total component B; (c) up to about 5% by weight of water/isocyanate reaction catalyst, based on total component B; and (d) from about 1% by weight to about 15% by weight of CHClF 2 , based on total component B.
Claim 15
Dependent Claim
37 words
A method as set forth in claim 12 wherein said polyalkoxylated amine is a polyalkoxylated monoamine and component A comprises from about 1% by weight to about 7% by weight CHClF 2 based on total component A.
Claim 16
Dependent Claim
44 words
A method as set forth in claim 12 wherein said polyalkoxylated amine is a polyalkoxylated monoamine and component A further comprises up to about 5 parts by weight of an acid formation inhibitor per 1000 parts by weight of CHClF 2 in component A.
Claim 17
Dependent Claim
47 words
A method as set forth in claim 12 wherein said polyalkoxylated amine is a polyalkoxylated monoamine and the second constituent of the combination of polyols of component B further comprises an additional polyol selected from the group consisting of ethylene glycol based polyols and glycerin based polyols.
Claim 18
Dependent Claim
45 words
A method as set forth in claim 12 wherein said polyalkoxylated amine is a polyalkoxylated monoamine and component A and component B are mixed in a relative proportion such that the ratio of NCO groups to OH groups is from about 1:1 to about 1.8:1.
Claim 19
Dependent Claim
64 words
A method as set forth in claim 12 wherein said polyalkoxylated amine is a polyalkoxylated monoamine and combination of polyols comprises from about 4% by weight to about 15% by weight of said first constituent, from about 35% by weight to about 65% by weight of said second constituent, and from about 25% by weight to about 45% by weight of said third constituent.
Claim 20
Dependent Claim
53 words
A method as set forth in claim 12 wherein said said polyalkoxylated amine is a polyalkoxylated monoamine and component B further comprises up to about 1% by weight based on total component B of an organometallic catalyst and up to about 1.5% by weight based on total component B of a trimerization catalyst.
Claim 21
Dependent Claim
17 words
A method as set forth in claim 12 wherein said polyalkoxylated amine is a polyalkoxylated trifunctional amine.
Claim 22
Dependent Claim
218 words
A rigid foam produced by mixing a component A with a component B, component A comprising isocyanate, from about 0.5% by weight to about 12% by weight CHClF 2 based on total component A, and a surfactant, and component B comprising (a) from about 65% by weight to about 95% by weight based on total component B of a combination of polyols comprising a first polyol constituent, which comprises a polyalkoxylated amine having an average OH number of from about 500 to about 700 and in which the alkoxy groups each have from two to three carbon atoms, a second polyol constituent, which comprises a sucrose-based polyol having an average OH number of from about 300 to about 400 and an average functionality of at least about 3, and a third polyol constituent, which comprises polyalkoxylated glycerin having an average OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to three carbon atoms; (b) from about 0.5% by weight to about 3% by weight of water, based on total component B; (c) up to about 5% by weight of water/isocyanate reaction catalyst, based on total component B; and (d) from about 1% by weight to about 15% by weight of CHClF 2 , based on total component B.
Claim 23
Dependent Claim
218 words
A rigid foam produced by mixing a component A with a component B, component A comprising isocyanate, from about 0.5% by weight to about 12% by weight CHClF 2 based on total component A, and a surfactant, and component B comprising (a) from about 65% by weight to about 95% by weight based on total component B of a combination of polyols comprising a first polyol constituent, which comprises a polyalkoxylated amine having an average OH number of from about 500 to about 700 and in which the alkoxy groups each have from two to three carbon atoms, a second polyol constituent, which comprises a sucrose-based polyol having an average OH number of from about 300 to about 400 and an average functionality of at least about 3, and a third polyol constituent, which comprises polyalkoxylated glycerin having an average OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to three carbon atoms; (b) from about 0.5% by weight to about 3% by weight of water, based on total component B; (c) up to about 5% by weight of water/isocyanate reaction catalyst, based on total component B; and (d) from about 1% by weight to about 15% by weight of CHClF 2 , based on total component B.
Claim 24
Dependent Claim
19 words
A rigid foam as set forth in claim 20 having a closed cell content of at least about 95%.
Claim 25
Dependent Claim
27 words
A rigid foam as set forth in claim 21 having a density in the range of from about 1 lb/ft. 3 to about 4 lb/ft. 3 .
Claim 26
Dependent Claim
27 words
A rigid foam as set forth in claim 22 having a density in the range of from about 1 lb/ft. 3 to about 1.5 lb./ft. 3 .
Claim 27
Dependent Claim
27 words
A rigid foam as set forth in claim 22 having a density in the range of from about 1.5 lb/ft. 3 to about 2.5 lb/ft. 3 .
Claim 28
Dependent Claim
27 words
A rigid foam as set forth in claim 22 having a density in the range of from about 2.5 lb/ft. 3 to about 4 lb/ft. 3 .
Claim 29
Dependent Claim
17 words
A method as set forth in claim 20 wherein said polyalkoxylated amine is a polyalkoxylated trifunctional amine.
Claim 30
Dependent Claim
16 words
A method as set forth in claim 20 wherein said polyalkoxylated amine is a polyalkoxylated monoamine.
Claim 31
Dependent Claim
94 words
A rigid foam produced by mixing at least two components to form a reaction mixture comprising: (a) isocyanate, (b) from about 2% by weight to about 10% by weight CHClF 2 , (c) from about 0.25% by weight to about 2% by weight of water, and (d) a combination of polyols having an average OH number of from about 300 to about 500 and comprising polyalkoxylated glycerin having an average OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to about three carbon atoms.
Claim 32
Dependent Claim
94 words
A rigid foam produced by mixing at least two components to form a reaction mixture comprising: (a) isocyanate, (b) from about 2% by weight to about 10% by weight CHClF 2 , (c) from about 0.25% by weight to about 2% by weight of water, and (d) a combination of polyols having an average OH number of from about 300 to about 500 and comprising polyalkoxylated glycerin having an average OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to about three carbon atoms.
Claim 33
Dependent Claim
34 words
A rigid foam comprising cells of gaseous CHClF 2 , having a closed cell content of at least 85% and exhibiting less than 5% volume change when cooled from room temperature to -200° F.
Claim 34
Dependent Claim
34 words
A rigid foam comprising cells of gaseous CHClF 2 , having a closed cell content of at least 85% and exhibiting less than 5% volume change when cooled from room temperature to -200° F.
Claim 35
Dependent Claim
24 words
A rigid foam as set forth in claim 29 which exhibits less than 5% volume change when cooled from room temperature to -200° F.
References Cited (Backward Citations)
US3072582A
Cited
GB926414A
Cited
US3391093A
Cited
GB935926A
Cited
US4105599A
Cited
US4205136A
Cited
US4380502A
Cited
US4393015A
Cited
US4407982A
Cited
US4429069A
Cited
US4508853A
Cited
US4595711A
Cited
US4546122A
Cited
US4585807A
Cited
US4636529A
Cited
US4713399A
Cited
US4642319A
Cited
US4742087A
Cited
US4742089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-15 | 1995-01-14 | 1995-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-15 | 1999-01-14 | 1999-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-15 | 2003-01-14 | 2003-07-16 | $7700.00 | Window Closed / Lapsed |