US4623674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer/polyols of substituted styrenes and polyurethanes made therefrom
Assignee: Lyondell Chemical Technology LP
•
Filing: 1985-06-21
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Granted: 1986-11-18
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Expires: 2005-06-21
Abstract
Abstract Stable dispersions of poly(para-methylstyrene), poly(vinyltoluene) and other substituted styrenes can be made in polyether polyols and thereafter formed into polyurethanes. The polymer/polyols made from substituted styrenes have low viscosity and good particle size and distribution.
Inventors
- 👤 Frederick E. Bailey, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:49
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/63; C08G18/638
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
116 words
A polymer/polyol dispersion which is useful in the preparation of polyurethanes comprising: (a) a polyol having a hydroxy number from about 20 to about 250; and (b) a polymer containing a substituted styrene monomer of the general formula ##STR5## where R is not in the ortho position and is an alkyl group containing one to four carbon atoms and may be substituted or unsubstituted, wherein the total amount of polymer dispersed in the polyol is from about 5 to 55 weight percent, based on the total weight of the dispersion with the proviso that the polymer contain less than 20 weight percent, based on the total weight of the polymer, of acrylonitrile when comonomers are employed.
Claim 2
Dependent Claim
116 words
A polymer/polyol dispersion which is useful in the preparation of polyurethanes comprising: (a) a polyol having a hydroxy number from about 20 to about 250; and (b) a polymer containing a substituted styrene monomer of the general formula ##STR5## where R is not in the ortho position and is an alkyl group containing one to four carbon atoms and may be substituted or unsubstituted, wherein the total amount of polymer dispersed in the polyol is from about 5 to 55 weight percent, based on the total weight of the dispersion with the proviso that the polymer contain less than 20 weight percent, based on the total weight of the polymer, of acrylonitrile when comonomers are employed.
Claim 3
Dependent Claim
17 words
The polymer/polyol dispersion of claim 1 wherein R is methyl, ethyl or a halogen substituted methyl group.
Claim 4
Dependent Claim
11 words
The polymer/polyol dispersion of claim 1 wherein a comonomer is employed.
Claim 5
Dependent Claim
11 words
The polymer/polyol dispersion of claim 3 wherein the comonomer is styrene.
Claim 6
Dependent Claim
12 words
The polymer/polyol dispersion of claim 1 wherein the substituted styrene is paramethylstyrene.
Claim 7
Dependent Claim
12 words
The polymer/polyol dispersion of claim 1 wherein the substituted styrene is vinyltoluene.
Claim 8
Dependent Claim
12 words
The polymer/polyol dispersion of claim 1 wherein the substituted styrene is chloromethylstyrene.
Claim 9
Dependent Claim
14 words
The polymer/polyol dispersion of claim 1 wherein the polyol is a polyalkylene oxide triol.
Claim 10
Dependent Claim
14 words
The polymer/polyol dispersion of claim 1 wherein the polyol is an amine terminated triol.
Claim 11
Dependent Claim
12 words
The polymer/polyol dispersion of claim 1 wherein the polymer is free-radical initiated.
Claim 12
Dependent Claim
51 words
A method for producing a polyurethane which comprises reacting (a) a polymer/polyol dispersion with (b) an organic polyisocyanate in the presence of a catalyst for the reaction of (a) and (b) wherein the polymer/polyol dispersion is the polymer/polyol disperson of claim 1 alone or in combination with other polyols and/or polymer/polyols.
Claim 13
Dependent Claim
22 words
The method of claim 11 wherein the polyurethane is a cellular polyurethane and wherein a blowing agent is present during the reaction.
Claim 14
Dependent Claim
15 words
The method of claim 12 wherein a foam stabilizer is additionally present during the reaction.
Claim 15
Dependent Claim
19 words
The method of claim 11 wherein the organic polyisocyanate is either TDI, MDI or a mixture of the two.
Claim 16
Dependent Claim
20 words
The method of claim 1 wherein in the substituted styrene is selected from group consisting of paramethylstyrene, vinyltoluene, and chloromethylstyrene.
Claim 17
Dependent Claim
10 words
The method of claim 11 wherein the comonomer is styrene.
Claim 18
Dependent Claim
13 words
The method of claim 11 wherein the polyol is an amine terminated triol.
Claim 19
Dependent Claim
13 words
The method of claim 11 wherein the polyol is a polyalkylene oxide triol.
Claim 20
Dependent Claim
9 words
A polyurethane comprising the reaction product of claim 11.
Claim 21
Dependent Claim
10 words
A polyurethane foam comprising the reaction product of claim 12.
Claim 22
Dependent Claim
10 words
A polyurethane foam comprising the reaction product of claim 13.
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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) | 1989-11-17 | 1990-05-19 | 1990-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-17 | 1994-05-19 | 1994-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-17 | 1998-05-19 | 1998-11-18 | $7700.00 | Window Closed / Lapsed |