US4111828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage stable polyol mixture
Assignee: Monsanto Co
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Filing: 1977-01-03
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Granted: 1978-09-05
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Expires: 1997-01-03
Abstract
Abstract Stable mixtures, comprising a sucrose-based polyol, a β-haloalkyl phosphate or β-haloalkyl phosphonate flame retardant and a hydroxylamine catalyst are provided which are characterized by prolonged shelf life. The stable mixtures are used in the preparation of foamed urethane polymers by reaction thereof with an isocyanate. The urethane polymers are useful as flexible foam insulating material in buildings, pipe lines, storage tanks and refrigerators and as flexible foams in cushions, mattresses, carpet backings, and packaging materials.
Inventors
- 👤 Donald S. T. Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:28
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/487; C08G18/4883; C08G18/08; C08G18/16; C08G18/18; C08G18/1825
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
54 words
In a B-side mixture used to prepare a flame retarded urethane polymer foam, said mixture comprising a sucrose-based polyol prepared by reacting sucrose with alkylene oxide, a β-halophosphonate and a catalyst, the improvement which comprises using as said catalyst a hydroxylamine selected from dimethylamino-2-propanol, methyl-di-ethanolamine, triethanolamine and a mixture of o- and p-dimethylaminomethyl phenols.
Claim 2
Dependent Claim
54 words
In a B-side mixture used to prepare a flame retarded urethane polymer foam, said mixture comprising a sucrose-based polyol prepared by reacting sucrose with alkylene oxide, a β-halophosphonate and a catalyst, the improvement which comprises using as said catalyst a hydroxylamine selected from dimethylamino-2-propanol, methyl-di-ethanolamine, triethanolamine and a mixture of o- and p-dimethylaminomethyl phenols.
Claim 3
Dependent Claim
26 words
Mixture of claim 1 wherein said β-halophosphonate is a compound of the formula ##STR4## wherein n is an average value of about 1 to about 2.
Claim 4
Dependent Claim
9 words
Mixture of claim 2 wherein said hydroxylamine is dimethylamino-2-propanol.
Claim 5
Dependent Claim
9 words
Mixture of claim 2 wherein said hydroxylamine is methyl-di-ethanolamine.
Claim 6
Dependent Claim
15 words
Mixture of claim 2 wherein said hydroxylamine is a mixture of o- and p-dimethylaminomethyl phenols.
Claim 7
Dependent Claim
9 words
Mixture of claim 2 wherein said hydroxylamine is triethanolamine.
Claim 8
Dependent Claim
54 words
In a B-side mixture used to prepare a flame retarded urethane polymer foam, said mixture comprising a sucrose-based polyol prepared by reacting sucrose with alkylene oxide, a β-halophosphate and a catalyst, the improvement which comprises using as said catalyst a hydroxylamine selected from dimethylamino-2-propanol, methyl-di-ethanolamine, triethanolamine and a mixture of o- and p-dimethylaminomethyl phenols.
Claim 9
Dependent Claim
54 words
In a B-side mixture used to prepare a flame retarded urethane polymer foam, said mixture comprising a sucrose-based polyol prepared by reacting sucrose with alkylene oxide, a β-halophosphate and a catalyst, the improvement which comprises using as said catalyst a hydroxylamine selected from dimethylamino-2-propanol, methyl-di-ethanolamine, triethanolamine and a mixture of o- and p-dimethylaminomethyl phenols.
Claim 10
Dependent Claim
12 words
Mixture of claim 7 wherein said β-halophosphate is 2,2-bis(chloromethyl) trimethylene bis[bis(2-chloroethyl) phosphate].
Claim 11
Dependent Claim
11 words
Mixture of claim 7 wherein said β-halophosphate is diethylene glycol-bis-di-2-chloroethyl phosphate.
Claim 12
Dependent Claim
10 words
Mixture of claim 7 wherein said β-halophosphate is tris(2,3-dibromopropyl) phosphate.
Claim 13
Dependent Claim
10 words
Mixture of claim 7 wherein said β-halophosphate is tris(β-chloroethyl) phosphate.
Claim 14
Dependent Claim
9 words
Mixture of claim 7 wherein said hydroxylamine is dimethylamino-2-propanol.
Claim 15
Dependent Claim
9 words
Mixture of claim 7 wherein said hydroxylamine is methyl-di-ethanolamine.
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) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |