US4357430A
Expired / Lapsed
US
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Polymer/polyols, methods for making same and polyurethanes based thereon
Assignee: Lyondell Chemical Technology LP
•
Filing: 1981-10-02
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Granted: 1982-11-02
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Expires: 2001-10-02
Abstract
Abstract This invention relates to normally liquid, stable polymer/polyol compositions formed by polymerizing, in the presence of a free radical catalyst, an ethylenically unsaturated monomer or monomers dissolved or dispersed in a polyol mixture including a coupled polyol consisting of the reaction product of a polyol having a functionality in excess of 2 reacted with polyisocyanate in such proportion that the ratio of hydroxyl groups to isocyanato groups is greater than 1. In one embodiment, the coupled polyol is made in situ in the base polyol by addition thereto of the required amount of the polyisocyanate. The novel polymer/polyol compositions are convertible to polyurethane foams and elastomers.
Inventors
- 👤 Russell VanCleve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:46
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/63; C08G18/636; C08F; C08F283/00; C08F283/06
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
138 words
A normally liquid, stable polymer/polyol composition formed by polymerizing, in the presence of a free radical catalyst, (1) from about 10 to about 50 weight percent of a mixture of acrylonitrile and an ethylenically unsaturated comonomer or comonomers in a weight ratio, respectively, of from about 80:20 to about 20:80, dissolved or dispersed in (2) from about 50 to about 90 weight percent of a polyol mixture comprising (a) a base polyol having a number average molecular weight of at least about 500 and (b) a coupled polyol consisting essentially of the reaction product of a polyol having a functionality in excess of 2 reacted with a polyisocyanate in such proportion that the ratio of hydroxyl groups to isocyanato groups is greater than 1, the coupled polyol being present in an amount sufficient to stabilize the resulting polymer/polyol.
Claim 2
Dependent Claim
138 words
A normally liquid, stable polymer/polyol composition formed by polymerizing, in the presence of a free radical catalyst, (1) from about 10 to about 50 weight percent of a mixture of acrylonitrile and an ethylenically unsaturated comonomer or comonomers in a weight ratio, respectively, of from about 80:20 to about 20:80, dissolved or dispersed in (2) from about 50 to about 90 weight percent of a polyol mixture comprising (a) a base polyol having a number average molecular weight of at least about 500 and (b) a coupled polyol consisting essentially of the reaction product of a polyol having a functionality in excess of 2 reacted with a polyisocyanate in such proportion that the ratio of hydroxyl groups to isocyanato groups is greater than 1, the coupled polyol being present in an amount sufficient to stabilize the resulting polymer/polyol.
Claim 3
Dependent Claim
33 words
The polymer/polyol composition of claim 1 wherein styrene is the comonomer and the weight percent of the mixture of acrylonitrile and styrene is in the range of from about 30 to about 40.
Claim 4
Dependent Claim
25 words
The polymer/polyol composition of claim 2 wherein the weight ratio of acrylonitrile to styrene is in the range of from about 80:20 to about 50:50.
Claim 5
Dependent Claim
29 words
The polymer/polyol composition of claim 1 wherein styrene is the comonomer and the weight ratio of acrylonitrile to styrene is in the range of from about 40:60 to 20:80.
Claim 6
Dependent Claim
29 words
The polymer/polyol composition of claim 1 wherein styrene is the comonomer and the weight ratio of acrylonitrile to styrene is in the range of from about 30:70 to 20:80.
Claim 7
Dependent Claim
14 words
The polymer/polyol composition of claim 1 wherein the base polyol is a poly(oxypropylene) polyol.
Claim 8
Dependent Claim
35 words
The polymer/polyol composition of claim 6 wherein the poly(oxypropylene) polyol has a nominal functionality in the range of from about 3 to about 4 and a hydroxyl number of from about 25 to about 70.
Claim 9
Dependent Claim
31 words
The polymer/polyol composition of claim 1 wherein the polyol reacted with the polyisocyanate to form the coupled polyol has a functionality in the range of from about 2.5 to about 4.
Claim 10
Dependent Claim
12 words
The polymer/polyol composition of claim 8 wherein the polyisocyanate is toluene diisocyanate.
Claim 11
Dependent Claim
12 words
The polymer/polyol composition of claim 1 wherein the polyisocyanate is toluene diisocyanate.
Claim 12
Dependent Claim
19 words
The polymer/polyol composition of claim 1 wherein the ratio of hydroxyl groups to isocyanato groups is 2:1 or greater.
Claim 13
Dependent Claim
53 words
The polymer/polyol composition of claim 1 wherein the coupled polyol, based upon the total weight of the base and coupled polyols, is present in an amount of from about 5 to about 50 weight percent with the mole ratio of the polyol constituent of the coupled polyol to the polyisocyanate being about 2:1.
Claim 14
Dependent Claim
19 words
The polymer/polyol composition of claim 1 wherein the polyol reacted with the polyisocyanate is identical to the base polyol.
Claim 15
Dependent Claim
159 words
A process for producing a normally liquid, stable polymer/polyol composition which comprises: (a) providing a polyol mixture comprising (1) a base polyol having a number average molecular weight of at least about 500 and (2) a coupled polyol consisting essentially of the reaction product of a polyol having a functionality in excess of 2 reacted with a polyisocyanate in such proportion that the ratio of hydroxyl groups to isocyanato groups is greater than 1, (b) dissolving or dispersing from about 10 to about 50 weight percent of a mixture of acrylonitrile and a comonomer or comonomers in a weight ratio, respectively, of from about 80:20 to about 20:80 in from about 50 to about 90 weight percent of said polyol mixture, and (c) polymerizing the mixture of acrylonitrile and styrene dissolved or dispersed in said polyol mixture in the presence of a free radical catalyst, said coupled polyol being present in an amount sufficient to stabilize the resulting polymer/polyol.
Claim 16
Dependent Claim
159 words
A process for producing a normally liquid, stable polymer/polyol composition which comprises: (a) providing a polyol mixture comprising (1) a base polyol having a number average molecular weight of at least about 500 and (2) a coupled polyol consisting essentially of the reaction product of a polyol having a functionality in excess of 2 reacted with a polyisocyanate in such proportion that the ratio of hydroxyl groups to isocyanato groups is greater than 1, (b) dissolving or dispersing from about 10 to about 50 weight percent of a mixture of acrylonitrile and a comonomer or comonomers in a weight ratio, respectively, of from about 80:20 to about 20:80 in from about 50 to about 90 weight percent of said polyol mixture, and (c) polymerizing the mixture of acrylonitrile and styrene dissolved or dispersed in said polyol mixture in the presence of a free radical catalyst, said coupled polyol being present in an amount sufficient to stabilize the resulting polymer/polyol.
Claim 17
Dependent Claim
47 words
The process for producing the normally liquid, stable polymer/polyol composition of claim 14 wherein said coupled polyol is formed in situ in the base polyol by addition thereto of an amount of said polyisocyanate sufficient to form the required proportion of coupled polyol prior to step (b).
Claim 18
Dependent Claim
41 words
The process for producing the normally liquid, stable polymer/polyol composition of claim 15 wherein styrene is the comonomer and the weight percent of the mixture of the acrylonitrile and styrene is in the range of from about 30 to about 40.
Claim 19
Dependent Claim
32 words
The process for producing the normally liquid, stable polymer/polyol composition of claim 16 wherein the weight ratio of acrylonitrile to styrene is in the range of from about 80:20 to about 50:50.
Claim 20
Dependent Claim
37 words
The process for producing the normally liquid, stable polymer/polyol composition of claim 15 wherein styrene is the comonomer and the weight ratio of acrylonitrile to styrene is in the range of from about 40:60 to about 20:20.
Claim 21
Dependent Claim
37 words
The process of producing the normally liquid, stable polymer/polyol composition of claim 15 wherein styrene is the comonomer and the weight ratio of acrylonitrile to styrene is in the range of from about 30:70 to about 20:80.
Claim 22
Dependent Claim
21 words
The process for producing the normally liquid, stable polymer/polyol composition of claim 15 wherein the base polyol is a poly(oxypropylene) polyol.
Claim 23
Dependent Claim
39 words
The process for producing the normally liquid, stable polymer/polyol composition of claim 20 wherein the poly(oxypropylene) polyol has a nominal functionality of from about 3 to about 4 and a hydroxyl number of from about 25 to about 70.
Claim 24
Dependent Claim
19 words
The process for producing the normally liquid, stable polymer/polyol composition of claim 15 wherein the polyisocyanate is toluene diisocyanate.
Claim 25
Dependent Claim
41 words
The process for producing the normally liquid, stable polymer/polyol composition of claim 15 wherein the coupled polyol is present in an amount of from about 5 to about 50 percent, based upon the total weight of the base and coupled polyols.
Claim 26
Dependent Claim
49 words
A method for producing a polyurethane foam by reacting and foaming a mixture comprising (a) the polymer/polyol composition claimed in claim 1, (b) an organic polyisocyanate, (c) a catalyst for the reaction of (a) and (b) to produce the polyurethane, (d) a blowing agent and (e) a foam stabilizer.
Claim 27
Dependent Claim
63 words
A method as claimed in claim 24 wherein the foam is a flexible foam, the reaction and foaming are performed by the one shot technique, the polymer/polyol composition is as claimed in claim 6, the blowing agent is water and the water is used in an amount to provide a foam having a density of about 1.75 pounds per cubic foot or less.
Claim 28
Dependent Claim
17 words
A method as claimed in claim 25 wherein the polymer/polyol composition is as claimed in claim 5.
Claim 29
Dependent Claim
17 words
A method as claimed in claim 24 wherein the polymer/polyol composition is as claimed in claim 2.
Claim 30
Dependent Claim
17 words
A method as claimed in claim 24 wherein the polymer/polyol composition is as claimed in claim 7.
Claim 31
Dependent Claim
17 words
A method as claimed in claim 24 wherein the polymer/polyol composition is as claimed in claim 8.
Claim 32
Dependent Claim
17 words
A method as claimed in claim 24 wherein the polymer/polyol composition is as claimed in claim 4.
Claim 33
Dependent Claim
20 words
A method as claimed in claim 24 wherein the organic polyisocyanate is a mixture of toluene diisocyanate and polymeric MDI.
Claim 34
Dependent Claim
43 words
A method for producing a polyurethane elastomer by reacting a mixture comprising (a) a polymer/polyol composition as claimed in claim 1 and (b) an organic polyisocyanate, in the presence of a catalyst for the reaction of (a) and (b) to produce the polyurethane.
Claim 35
Dependent Claim
10 words
A polyurethane foam produced by the method of claim 24.
Claim 36
Dependent Claim
10 words
A polyurethane foam produced by the method of claim 25.
Claim 37
Dependent Claim
10 words
A polyurethane foam produced by the method of claim 26.
Claim 38
Dependent Claim
10 words
A polyurethane foam produced by the method of claim 27.
Claim 39
Dependent Claim
10 words
A polyurethane foam produced by the method of claim 28.
Claim 40
Dependent Claim
10 words
A polyurethane foam produced by the method of claim 29.
Claim 41
Dependent Claim
10 words
A polyurethane foam produced by the method of claim 30.
Claim 42
Dependent Claim
10 words
A polyurethane foam produced by the method of claim 31.
Claim 43
Dependent Claim
10 words
A polyurethane foam produced by the method of claim 32.
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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) | 1985-11-01 | 1986-05-03 | 1986-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-01 | 1990-05-03 | 1990-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-01 | 1994-05-03 | 1994-11-02 | $7700.00 | Window Closed / Lapsed |