Patent US4086194A successfully refreshed from Google Patents.
US4086194A
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Polyurethane foam containing a flame retardant
Assignee: Stauffer Chemical Co
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Filing: 1975-10-06
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Granted: 1978-04-25
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Expires: 1995-10-06
Abstract
Abstract Reaction of halides of alkyl and aryl phosphonic acids of the formula RP(O)X 2 , where R is an C 1 -C 20 alkyl or aryl, e.g., phenyl, group or a halo- substituted C 1 -C 20 alkyl group or aryl group, e.g., phenyl, and an epoxy group containing alcohol of the formula ##STR1## where n is an integer from 1 to 8, e.g., glycidol, give a compound having the formula ##STR2## where R and n are as defined above which can be used as a flame retardant in polyurethane foams.
Inventors
- 👤 Siegfried Altscher
- 👤 Jagadish C. Goswami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:45
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3878; C08G18/388; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4071; C07F9/4075
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
58 words
A polyurethane foam containing an effective amount for flame retardancy of the foam formed therefrom of a compound of the formula ##STR5## where n is an integer from 1 to 8, R is selected from the group consisting of C 1 -C 20 alkyl, aryl and halo-substituted C 1 -C 20 alkyl and aryl and X is halogen.
Claim 2
Dependent Claim
58 words
A polyurethane foam containing an effective amount for flame retardancy of the foam formed therefrom of a compound of the formula ##STR5## where n is an integer from 1 to 8, R is selected from the group consisting of C 1 -C 20 alkyl, aryl and halo-substituted C 1 -C 20 alkyl and aryl and X is halogen.
Claim 3
Dependent Claim
14 words
A foam as set forth in claim 1 wherein R is --CH 2 Cl.
Claim 4
Dependent Claim
20 words
A foam as claimed in claim 1 wherein X is selected from the group consisting of chlorine, bromine and iodine.
Claim 5
Dependent Claim
16 words
A foam as claimed in claim 1 wherein R is C 1 -C 20 alkyl group.
Claim 6
Dependent Claim
13 words
A foam as claimed in claim 1 wherein R is a phenyl group.
Claim 7
Dependent Claim
18 words
A foam as claimed in claim 1 wherein R is a halosubstituted C 1 -C 20 alkyl group.
References Cited (Backward Citations)
US3167575A
Cited
US3737397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |