Patent US4020024A successfully refreshed from Google Patents.
US4020024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenated polyether-polyols and polyurethane foams manufactured from the latter
Assignee: Solvay SA
•
Filing: 1974-10-23
•
Granted: 1977-04-26
•
Expires: 1994-10-23
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
2026-10-27 07:45
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: 24
Claim 1
Independent Claim
112 words
In the production of a semi-rigid or rigid polyurethane foam from a polyether-polyol, the improvement wherein the polyether-polyol comprises at least one polyether-polyol according to 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
112 words
In the production of a semi-rigid or rigid polyurethane foam from a polyether-polyol, the improvement wherein the polyether-polyol comprises at least one polyether-polyol according to 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 process according to claim 1 wherein Z represents the divalent radical --CH 2 -CH 2 --.
Claim 4
Dependent Claim
13 words
A process according to claim 1 wherein Z represents the trivalent radical ##STR13##
Claim 5
Dependent Claim
14 words
A process according to claim 1 wherein Z represents the chlorinated divalent radical ##STR14##
Claim 6
Dependent Claim
24 words
A process 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
13 words
A process according to claim 5 wherein Z represents the divalent radical ##STR15##
Claim 8
Dependent Claim
13 words
A process according to claim 5 wherein Z represents the divalent radical ##STR16##
Claim 9
Dependent Claim
21 words
A process 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 process 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
32 words
A process according to claim 9 wherein R is a radical selected from the group consisting of --CH 3 , ##STR17## --CH 2 CH 2 Cl and --CH 2 -CH=CH 2 .
Claim 12
Dependent Claim
17 words
A process according to claim 1 wherein the polyether-polyol is a mixture of non-chlorinated and chlorinated polyether-polyols.
Claim 13
Dependent Claim
103 words
An isocyanate/polyether-polyol semi-rigid or rigid polyurethane foam, the polyether-polyol of which comprises a polyether-polyol according to the general formula: ##STR18## 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 14
Dependent Claim
103 words
An isocyanate/polyether-polyol semi-rigid or rigid polyurethane foam, the polyether-polyol of which comprises a polyether-polyol according to the general formula: ##STR18## 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 15
Dependent Claim
17 words
A foam according to claim 12 wherein Z represents the divalent radical --CH 2 -CH 2 --.
Claim 16
Dependent Claim
13 words
A foam according to claim 12 wherein Z represents the trivalent radical ##STR19##
Claim 17
Dependent Claim
14 words
A foam according to claim 12 wherein Z represents the chlorinated divalent radical ##STR20##
Claim 18
Dependent Claim
24 words
A foam according to claim 12 wherein Z represents a C 2 to C 6 saturated or unsaturated brominated aliphatic radical of valency z.
Claim 19
Dependent Claim
13 words
A foam according to claim 16 wherein Z represents the divalent radical ##STR21##
Claim 20
Dependent Claim
13 words
A foam according to claim 16 wherein Z represents the divalent radical ##STR22##
Claim 21
Dependent Claim
21 words
A foam according to claim 12 wherein Z represents a C 2 to C 6 unsaturated aliphatic radical of valency z.
Claim 22
Dependent Claim
23 words
A foam according to claim 12 wherein R represents an optionally halogenated C 1 to C 5 saturated or unsaturated monovalent aliphatic radical.
Claim 23
Dependent Claim
32 words
A foam according to claim 20 wherein R is a radical selected from the group consisting of --CH 3 , ##STR23## --CH 2 -CH 2 Cl and --CH 2 -CH=CH 2 .
Claim 24
Dependent Claim
17 words
A foam according to claim 12 wherein the polyether-polyol is a mixture of non-chlorinated and chlorinated polyether-polyols.
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) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |