US4072638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenated polyether polyols and polyurethane foams produced therefrom
Assignee: Solvay SA
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Filing: 1976-10-04
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Granted: 1978-02-07
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Expires: 1996-10-04
Abstract
Abstract Rigid and semi-rigid, fire-resisting polyurethane foams which are prepared by reacting in the presence of a foaming agent and a reaction catalyst an organic polyisocyanate and at least one polyether-polyol having 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 a radical of valence z which is the residue of an organic polyhydroxyl compound initiator having from 2 and 6 hydroxyl groups.
Inventors
- 👤 Jean-Claude Boulet
- 👤 Rene Walraevens
- 👤 Gerard Bonnety
- 👤 Jacques Lolivier
- 👤 Paul Trouillet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:14
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5003; C08G18/5006; 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: 16
Claim 1
Independent Claim
120 words
A process for the production of rigid and semi-rigid, fire-resisting polyurethane foams which comprises reacting in the presence of a foaming agent and a reaction catalyst an organic polyisocyanate and at least one polyetherpolyol having 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 means 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 a radical of valence z which is the residue of an organic polyhydroxyl compound initiator having from 2 to 6 hydroxyl groups.
Claim 2
Dependent Claim
120 words
A process for the production of rigid and semi-rigid, fire-resisting polyurethane foams which comprises reacting in the presence of a foaming agent and a reaction catalyst an organic polyisocyanate and at least one polyetherpolyol having 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 means 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 a radical of valence z which is the residue of an organic polyhydroxyl compound initiator having from 2 to 6 hydroxyl groups.
Claim 3
Dependent Claim
44 words
The process of claim 1 wherein Z is a C 2 to C 6 saturated, halogenated aliphatic radical of valence z which is the residue of a C 2 to C 6 saturated, halogenated polyhydroxyl compound initiator having from two to three hydroxyl groups.
Claim 4
Dependent Claim
12 words
The process of claim 2 wherein Z represents the bivalent radical ##STR9##
Claim 5
Dependent Claim
9 words
The process of claim 2 wherein Z is brominated.
Claim 6
Dependent Claim
14 words
The process of claim 4 wherein Z represents the bivalent brominated saturated radical ##STR10##
Claim 7
Dependent Claim
45 words
The process of claim 1 wherein Z is a C 2 to C 6 saturated, non-halogenated aliphatic radical of valence z which is the residue of a C 2 to C 6 saturated, non-halogenated aliphatic polyhydroxyl compound initiator having from two to three hydroxyl groups.
Claim 8
Dependent Claim
18 words
The process of claim 6 wherein Z represents the bivalent non-halogenated saturated radical --CH 2 --CH 2 --.
Claim 9
Dependent Claim
14 words
The process of claim 7 wherein Z represents the trivalent non-halogenated saturated radical ##STR11##
Claim 10
Dependent Claim
29 words
The process of claim 1 wherein Z is a C 2 to C 6 unsaturated, halogenated aliphatic radical of polyhydroxyl compound initiator having from two to three hydroxyl groups.
Claim 11
Dependent Claim
9 words
The process of claim 9 wherein Z is brominated.
Claim 12
Dependent Claim
14 words
The process of claim 10 wherein Z represents the bivalent brominated unsaturated radical ##STR12##
Claim 13
Dependent Claim
41 words
The process of claim 1 in which Z is a C 2 to C 6 aliphatic radical of valence z which is the residue of C 2 to C 6 aliphatic polyhydroxyl compound initiator having from 2 to 6 hydroxyl groups.
Claim 14
Dependent Claim
9 words
The process of claim 12 wherein Z is unsaturated.
Claim 15
Dependent Claim
35 words
The process of claim 12 in which z is a number between 2 and 3 and Z is a C 2 to C 6 aliphatic polyhydroxyl compound initiator having from two to three hydroxyl groups.
Claim 16
Dependent Claim
49 words
The process of claim 1 wherein 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(y+y), in which x+y represents the mean value of x+y in the entire molecule, is between 1 and 24.
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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) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |