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US4067911A
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Halogenated polyether-polyols and polyurethane foams manufactured from the latter
Assignee: Solvay SA
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Filing: 1977-01-24
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Granted: 1978-01-10
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Expires: 1997-01-24
Abstract
Abstract Halogenated polyether-polyols lacking terminal primary chlorohydrin and hydroxyl groups are reacted with organic isocyanates to produce semi-rigid or rigid polyurethane foam having excellent physical, mechanical and processing characteristics and good fire-resistance. The polyether-polyols are used individually, as admixtures with each other and/or as admixtures with non-halogenated polyether-polyols.
Inventors
- 👤 Rene Walraevens
- 👤 Andre Collin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:20
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/13; C07C43/137; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5003; C08G18/5006; C08G18/67; C08G18/6795
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
89 words
A polyether-polyol of the general formula: ##STR12##in which z represents a number from 2 to 6; x and y represent numbers from 0 to 7 such that the average value x + y per chain is from 0 to 7; z(x + y), wherein x + y represents the average value of x + y throughout the entire molecule, is from 1 to 42; Z represents a C 2 to C 6 aliphatic radical of valency z; and R represents a C 1 to C 5 monovalent aliphatic radical.
Claim 2
Dependent Claim
89 words
A polyether-polyol of the general formula: ##STR12##in which z represents a number from 2 to 6; x and y represent numbers from 0 to 7 such that the average value x + y per chain is from 0 to 7; z(x + y), wherein x + y represents the average value of x + y throughout the entire molecule, is from 1 to 42; Z represents a C 2 to C 6 aliphatic radical of valency z; and R represents a C 1 to C 5 monovalent aliphatic radical.
Claim 3
Dependent Claim
17 words
A polyether-polyol according to claim 1 wherein Z represents the divalent radical --CH 2 --CH 2 --.
Claim 4
Dependent Claim
13 words
A polyether-polyol according to claim 1 wherein Z represents the trivalent radical ##STR13##
Claim 5
Dependent Claim
13 words
A polyether-polyol according to claim 1 wherein Z represents the chlorinated divalent radical
Claim 6
Dependent Claim
24 words
A polyether-polyol according to claim 1 wherein Z represents a C 2 to C 6 saturated or unsaturated brominated aliphatic radical of valency z.
Claim 7
Dependent Claim
12 words
A polyether-polyol according to claim 5 wherein Z represents the divalent radical
Claim 8
Dependent Claim
12 words
A polyether-polyol according to claim 5 wherein Z represents the divalent radical
Claim 9
Dependent Claim
21 words
A polyether-polyol according to claim 1 wherein Z represents a C 2 to C 6 unsaturated aliphatic radical of valency z.
Claim 10
Dependent Claim
23 words
A polyether-polyol according to claim 1 wherein R represents an optionally halogenated C 1 to C 5 saturated or unsaturated monovalent aliphatic radical.
Claim 11
Dependent Claim
31 words
A polyether-polyol according to claim 9 wherein R is a radical selected from the group consisting of --CH 3 , --CH 2 --CH 2 Cl and --CH 2 --CH=CH 2 .
References Cited (Backward Citations)
US2581464A
Cited
US2575558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |