US4173710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenated polyether polyols and polyurethane foams produced therefrom
Assignee: Solvay SA
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Filing: 1977-11-14
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Granted: 1979-11-06
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Expires: 1997-11-14
Abstract
Abstract New halogenated polyether polyols for the production of permanently fire-proof polyurethane foams, said halogenated polyether polyols corresponding to the general formula: ##STR1## in which z represents a number between 2 and 6, x and y represent numbers between 0 and 12 such that the mean value x+y per chain is between 0 and 12, and that z (x+y), in which x+y represents the mean value of x+y in the entire molecule, is between 1 and 72, and Z represents the residue of a halogenated polyhydroxyl compound initiator and comprises a C 2 to C 6 halogenated aliphatic radical of valence z, the halogen being selected from the group consisting of chlorine and bromine.
Inventors
- 👤 Jean-Claude Boulet
- 👤 Rene Walraevens
- 👤 Gerard Bonnety
- 👤 Jacques Lolivier
- 👤 Paul Trouillet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:10
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5003; C08G18/5006; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/13; C07C43/137; C08G59/00; C08G59/14; C08G59/1405; C08G59/1427; C08G65/00; C08G65/02; C08G65/04; C08G65/22; C08G65/223; C08G65/24; C08G65/26; C08G65/2639; C08G65/32; C08G65/321; C08G65/324; C08G65/327; C08G65/329; C08G65/335
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
98 words
Polyether polyols of the general formula: ##STR8## in which z represents a number between 2 and 6, x and y represent numbers between 0 and 12 such that the mean value x+y per chain is between 0 and 12, and that z (x+y) in which x+y represents the mean value of x+y in the entire molecule is between 1 and 72 and Z represents the residue of a halogenated polyhydroxyl compound initiator and comprises a C 2 to C 6 halogenated aliphatic radical of valence z, the halogen being selected from the group consisting of chlorine and bromine.
Claim 2
Dependent Claim
98 words
Polyether polyols of the general formula: ##STR8## in which z represents a number between 2 and 6, x and y represent numbers between 0 and 12 such that the mean value x+y per chain is between 0 and 12, and that z (x+y) in which x+y represents the mean value of x+y in the entire molecule is between 1 and 72 and Z represents the residue of a halogenated polyhydroxyl compound initiator and comprises a C 2 to C 6 halogenated aliphatic radical of valence z, the halogen being selected from the group consisting of chlorine and bromine.
Claim 3
Dependent Claim
14 words
Polyether polyols according to claim 1 wherein Z represents the bivalent organic radical ##STR9##
Claim 4
Dependent Claim
20 words
Polyether polyols according to claim 1 wherein the halogen of C 2 to C 6 halogenated aliphatic radical is bromine.
Claim 5
Dependent Claim
15 words
Polyether polyols according to claim 1 wherein Z represents the bivalent brominated saturated radical ##STR10##
Claim 6
Dependent Claim
15 words
Polyether polyols according to claim 1 wherein Z represents the bivalent brominated unsaturated radical ##STR11##
Claim 7
Dependent Claim
53 words
Polyether polyols according to claim 1 characterized in that x and y represent numbers between 0 and 4 such that the mean value x+y per chain is between 0 and 4 and that z (x+y), in which x+y represents the mean value of x+y in the entire molecule, is between 1 and 24.
References Cited (Backward Citations)
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US2236919A
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US2581464A
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US2575558A
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FR1350425A
Cited
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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) | 1982-11-05 | 1983-05-07 | 1983-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-05 | 1987-05-07 | 1987-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-05 | 1991-05-07 | 1991-11-06 | $7700.00 | Window Closed / Lapsed |