US4690956A
Expired / Lapsed
US
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Process for the preparation of graft polymer dispersions and flame-retardant polyurethane foams
Assignee: BASF Corp
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Filing: 1985-10-28
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Granted: 1987-09-01
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Expires: 2005-10-28
Abstract
Abstract Graft polymer dispersions in polyoxyalkylene polyether polyols are employed together with flame retardant compounds to prepare flame retardant polyurethane foams. The polymer dispersions employ less than 0.1 mole of induced unsaturation per mole of polyol mixture. Processes for the preparation of these polymer dispersions employ fumarate derived polyetherester polyols or polyetherester polyols prepared by reacting a polyoxyalkylene polyether polyol with a compound selected from the group consisting of maleic acid, maleic anhydride and fumaric acid and an alkylene oxide in the presence of salts and oxides of divalent metals. The polymer dispersions are prepared in the presence of a reaction moderator and employ 50 weight percent or more of acrylonitrile.
Inventors
- 👤 Gerhard G. Ramlow
- 👤 Duane A. Heyman
- 👤 Oscar M. Grace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:44
CPC Classifications
C; C08; C08F; C08F291/00; C08F291/06; C08F291/08; C08F283/00; C08F283/06; C08F299/00; C08F299/02; C08F299/022; C08F299/026; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/63; C08G18/635; C08G63/00; C08G63/66; C08G63/668; C08G63/676
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
133 words
A stable low viscosity graft polymer dispersion formed by polymerizing in the presence of a reaction moderator and a free radical initiator (a) an ethylenically unsaturated monomer or mixture of monomers provided that in the mixture of monomers the concentration of acrylonitrile or methacrylonitrile is 50 weight percent to 100 weight percent of the weight of monomers, in (b) from about 25 to about 75 weight percent based on the total weight of the dispersion, a polyol mixture comprising (1) a polyoxyalkylene polyether polyol having an equivalent weight from 100 to 10,000, (2) a macromer containing induced fumarate unsaturation consisting essentially of a polyoxyalkylene polyether polyol having an equivalent weight from 100 to 10,000 , wherein the polyol mixture contains from 0.001 to 0.09 mole of induced unsaturation per mole of polyol mixture.
Claim 2
Dependent Claim
133 words
A stable low viscosity graft polymer dispersion formed by polymerizing in the presence of a reaction moderator and a free radical initiator (a) an ethylenically unsaturated monomer or mixture of monomers provided that in the mixture of monomers the concentration of acrylonitrile or methacrylonitrile is 50 weight percent to 100 weight percent of the weight of monomers, in (b) from about 25 to about 75 weight percent based on the total weight of the dispersion, a polyol mixture comprising (1) a polyoxyalkylene polyether polyol having an equivalent weight from 100 to 10,000, (2) a macromer containing induced fumarate unsaturation consisting essentially of a polyoxyalkylene polyether polyol having an equivalent weight from 100 to 10,000 , wherein the polyol mixture contains from 0.001 to 0.09 mole of induced unsaturation per mole of polyol mixture.
Claim 3
Dependent Claim
35 words
The polymer dispersion of claim 1 wherein the monomer is selected from the group consisting of at least 50 weight percent acrylonitrile and the remainder selected from 4-methylstyrene, vinyl toluene, methyl methacrylate, methacrylonitrile, and styrene.
Claim 4
Dependent Claim
25 words
The polymer dispersion of claim 1 wherein the reaction moderator is selected from the group consisting of 1-dodecanethiol, morpholine, 2-butanol, 1-butanol, 2-mercaptoethanol and 4,4'-bis(α,α-dimethylbenzyl) diphenylamine.
Claim 5
Dependent Claim
30 words
The polymer dispersion of claim 1 wherein the concentration of reaction moderator is from about 0.1 weight percent to about 30 weight percent based on the weight of the monomer.
Claim 6
Dependent Claim
31 words
The polymer dispersion of claim 1 wherein the concentration of said reaction moderator is from about 0.5 weight percent to about 10.0 weight percent based on the weight of the monomer.
Claim 7
Dependent Claim
142 words
A process for the preparation of a stable low viscosity graft polymer dispersion comprising polymerizing in the presence of a reaction moderator and in the presence of a free radical initiator (a) an ethylenically unsaturated monomer or mixture of monomers provided that in the mixture of monomers the concentration of acrylonitrile or methacrylonitrile is 50 weight percent to 100 weight percent of the weight of monomers, in (b) from about 25 to about 75 weight percent based on the total weight of the dispersion, a polyol mixture comprising (1) a polyoxyalkylene polyether polyol having an equivalent weight from 100 to 10,000, (2) a macromer containing induced fumarate unsaturation consisting essentially of a polyoxyalkylene polyether polyol having an equivalent weight from 100 to 10,000 , wherein the polyol mixture contains from 0.001 to 0.09 mole of induced unsaturation per mole of polyol mixture.
Claim 8
Dependent Claim
142 words
A process for the preparation of a stable low viscosity graft polymer dispersion comprising polymerizing in the presence of a reaction moderator and in the presence of a free radical initiator (a) an ethylenically unsaturated monomer or mixture of monomers provided that in the mixture of monomers the concentration of acrylonitrile or methacrylonitrile is 50 weight percent to 100 weight percent of the weight of monomers, in (b) from about 25 to about 75 weight percent based on the total weight of the dispersion, a polyol mixture comprising (1) a polyoxyalkylene polyether polyol having an equivalent weight from 100 to 10,000, (2) a macromer containing induced fumarate unsaturation consisting essentially of a polyoxyalkylene polyether polyol having an equivalent weight from 100 to 10,000 , wherein the polyol mixture contains from 0.001 to 0.09 mole of induced unsaturation per mole of polyol mixture.
Claim 9
Dependent Claim
35 words
The process of claim 5 wherein the monomer is selected from the group consisting of at least 50 weight percent acrylonitrile, and the remainder selected from methylstyrene, vinyl toluene, methyl methacrylate, methacrylonitrile, divinylbenzene and styrene.
Claim 10
Dependent Claim
29 words
The process of claim 5 wherein the polymerization occurs in the presence of a reaction moderator selected from the group consisting of 1-dodecanethiol, morpholine, 2-butanol, 1-butanol, 2-mercaptoethanol and 4,4'-bis(α,α-dimethylbenzyl)diphenylamine.
Claim 11
Dependent Claim
29 words
The process of claim 6 wherein the concentration of reaction moderator is from about 0.1 weight percent to about 30 weight percent based on the weight of the monomer.
Claim 12
Dependent Claim
30 words
The process of claim 6 wherein the concentration of said reaction moderator is from about 0.5 weight percent to about 10.0 weight percent based on the weight of the monomer.
Claim 13
Dependent Claim
35 words
A flame retardant polyurethane foam prepared by reacting the (a) polymer dispersion of claim 1, (b) an organic polyisocyanate, (c) a blowing agent, (d) a urethane forming catalyst, (e) foam stabilizers, and (f) flame retardants.
Claim 14
Dependent Claim
15 words
A flame retardant polyurethane foam prepared by reacting the (a) polymer dispersion of claim 2.
Claim 15
Dependent Claim
15 words
A flame retardant polyurethane foam prepared by reacting the (a) polymer dispersion of claim 3.
Claim 16
Dependent Claim
15 words
A flame retardant polyurethane foam prepared by reacting the (a) polymer dispersion of claim 4.
Claim 17
Dependent Claim
15 words
A flame retardant polyurethane foam prepared by reacting the (a) polymer dispersion of claim 5.
Claim 18
Dependent Claim
31 words
A flame retardant polyurethane elastomer prepared by reacting the (a) polymer dispersion of claim 1, (b) an organic polyisocyanate, (c) a urethane forming catalyst, (d) foam stabilizers, and (e) flame retardants.
Claim 19
Dependent Claim
15 words
A flame retardant polyurethane elastomer prepared by reacting the (a) polymer dispersion of claim 2.
Claim 20
Dependent Claim
15 words
A flame retardant polyurethane elastomer prepared by reacting the (a) polymer dispersion of claim 3.
Claim 21
Dependent Claim
15 words
A flame retardant polyurethane elastomer prepared by reacting the (a) polymer dispersion of claim 4.
Claim 22
Dependent Claim
15 words
A flame retardant polyurethane elastomer prepared by reacting the (a) polymer dispersion of claim 5.
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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) | 1990-08-31 | 1991-03-02 | 1991-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-31 | 1995-03-02 | 1995-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-31 | 1999-03-02 | 1999-09-01 | $7700.00 | Window Closed / Lapsed |