US4169922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rigid polyurethane foam-forming compositions
Assignee: Solutia Inc
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Filing: 1977-12-27
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Granted: 1979-10-02
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Expires: 1997-12-27
Abstract
Abstract Advantageous rigid polyurethane foam properties (e.g. compressive strength) can be improved and the proportions of polymerization catalyst and/or surfactant needed to provide a given level of such properties can be lowered by preparing such foams from compositions comprising, in addition to the conventional foam-forming reactants including polyisocyanate and polyol, from about 3% to about 10%, based on the weight of the polyol, of a plasticizer selected from essentially halogen-free phosphates and carboxylates containing at least one aryl radical, e.g. isodecyl diphenyl phosphate or butyl benzyl phthalate.
Inventors
- 👤 Jasper H. Brown
- 👤 Albert W. Morgan
- 👤 Donald S. T. Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:22
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0038; C08J9/0023; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12; C08K5/49; C08K5/51; C08K5/52; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
50 words
Rigid polyurethane foam produced by subjecting to polyurethane foam-forming reaction conditions a composition comprising rigid polyurethane foam-forming reactants including an organic polyisocyanate and a polyol having more than two hydroxy radicals per molecule and, based on the weight of said polyol, from about 3% to about 10% alkyl aryl phthalate.
Claim 2
Dependent Claim
50 words
Rigid polyurethane foam produced by subjecting to polyurethane foam-forming reaction conditions a composition comprising rigid polyurethane foam-forming reactants including an organic polyisocyanate and a polyol having more than two hydroxy radicals per molecule and, based on the weight of said polyol, from about 3% to about 10% alkyl aryl phthalate.
Claim 3
Dependent Claim
11 words
Foam of claim 1 wherein the phthalate is butyl benzyl phthalate.
Claim 4
Dependent Claim
19 words
Foam of claim 1, said composition comprising a silicine surfactant or amine catalyst for the formation of said polyurethane.
Claim 5
Dependent Claim
11 words
Foam of claim 3 wherein the phthalate is butyl benzyl phthalate.
Claim 6
Dependent Claim
28 words
Foam of claim 1, said composition containing not less than about 4% and not more than about 8.5% of said phthalate, based on the weight of said polyol.
Claim 7
Dependent Claim
11 words
Foam of claim 5 wherein the phthalate is butyl benzyl phthalate.
Claim 8
Dependent Claim
19 words
Foam of claim 5, said composition comprising a silicone surfactant or amine catalyst for the formation of said polyurethane.
Claim 9
Dependent Claim
28 words
Foam of claim 1, said composition containing not less than about 5% and not more than about 7% of said phthalate, based on the weight of said polyol.
Claim 10
Dependent Claim
19 words
Foam of claim 8, said composition comprising a silicone surfactant or amine catalyst for the formation of said polyurethane.
Claim 11
Dependent Claim
11 words
Foam of claim 9 wherein the phthalate is butyl benzyl phthalate.
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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) | 1982-10-01 | 1983-04-02 | 1983-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-01 | 1987-04-02 | 1987-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-01 | 1991-04-02 | 1991-10-02 | $7700.00 | Window Closed / Lapsed |