US4522976A
Expired / Lapsed
US
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Graft polymer dispersion in a mixture of low molecular weight polyols and polyether polyols and polyurethane foams prepared therefrom
Assignee: BASF Corp
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Filing: 1984-05-17
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Granted: 1985-06-11
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Expires: 2004-05-17
Abstract
Abstract A low viscosity, stable graft polymer dispersion is prepared by polymerizing in the presence of a free radical initiator, from about 25 to about 70 weight percent based on the total weight of the dispersion, an ethylenically unsaturated monomer or mixture of monomers, in a polyol mixture comprising (1) from about 25 to about 99 weight percent of a polyol containing from 2 to 8 hydroxyl groups and having an equivalent weight from 30 to about 200, (2) from about 1 to about 75 weight percent of a macromer containing induced unsaturation, said macromer comprising the reaction product of a polyether polyol having an equivalent weight from 100 to 10,000 with a compound having both ethylenic unsaturation and a group selected from the group consisting of a hydroxyl, carboxyl, anhydride, isocyanate and epoxy or mixtures thereof. These graft polymer dispersions are useful for preparing polyurethane products.
Inventors
- 👤 Oscar M. Grace
- 👤 Steven E. Wujcik
- 👤 Duane A. Heyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:54
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/63; C08G18/635; C08F; C08F290/00; C08F290/02; C08F290/06; C08F290/062
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
137 words
A stable low viscosity graft polymer dispersion prepared by polymerizing in the presence of a free radical initiator from about 25 to about 70 weight percent based on the total weight of the dispersion, an ethylenically unsaturated monomer or mixture of monomers, in a polyol mixture comprising (1) from about 25 to about 99 weight percent of a polyol containing from 2 to 8 hydroxyl groups and having an equivalent weight from 30 to about 200, and (2) from about 1 to about 75 weight percent of a macromer containing induced unsaturation, said macromer comprising the reaction product of a polyether polyol having an equivalent weight from 100 to 10,000 with a compound having both ethylenic unsaturation and a group selected from the group consisting of a hydroxyl, carboxyl, anhydride, isocyanate, and epoxy group or mixtures thereof.
Claim 2
Dependent Claim
137 words
A stable low viscosity graft polymer dispersion prepared by polymerizing in the presence of a free radical initiator from about 25 to about 70 weight percent based on the total weight of the dispersion, an ethylenically unsaturated monomer or mixture of monomers, in a polyol mixture comprising (1) from about 25 to about 99 weight percent of a polyol containing from 2 to 8 hydroxyl groups and having an equivalent weight from 30 to about 200, and (2) from about 1 to about 75 weight percent of a macromer containing induced unsaturation, said macromer comprising the reaction product of a polyether polyol having an equivalent weight from 100 to 10,000 with a compound having both ethylenic unsaturation and a group selected from the group consisting of a hydroxyl, carboxyl, anhydride, isocyanate, and epoxy group or mixtures thereof.
Claim 3
Dependent Claim
28 words
The graft polymer dispersion of claim 1 wherein the amount of induced saturation is from about 0.001 to about 1.0 mole of unsaturation per mole of polyol mixture.
Claim 4
Dependent Claim
27 words
The graft polymer dispersion of claim 1 wherein the monomer is selected from the group consisting of styrene, methylstyrene, vinyl toluene, methyl methacrylate, methacrylonitrile, divinylbenzene and acrylonitrile.
Claim 5
Dependent Claim
20 words
The graft polymer dispersion of claim 1 wherein the monomer is selected from the group consisting of styrene and acrylonitrile.
Claim 6
Dependent Claim
11 words
The polymer dispersion of claim 1 wherein the monomer is styrene.
Claim 7
Dependent Claim
18 words
The polymer dispersion of claim 1 wherein the polymerization occurs in the presence of a chain transfer agent.
Claim 8
Dependent Claim
28 words
The polymer dispersion of claim 6 wherein the chain transfer agent is selected from the group consisting of dodecanethiol, bromotrichloromethane, 2-butanol, 1-butanol, allyl alcohol, 2-mercaptoethanol and octadecyl mercaptan.
Claim 9
Dependent Claim
31 words
The polymer dispersion of claim 6 wherein the concentration of chain transfer agent is from about 0.1 weight percent to about 10 weight percent based on the weight of the monomer.
Claim 10
Dependent Claim
142 words
A process for the preparation of a stable low viscosity graft polymer dispersion prepared by polymerizing in the presence of a free radical initiator from about 25 to about 70 weight percent based on the total weight of the dispersion, an ethylenically unsaturated monomer or mixture of monomers, in a polyol mixture comprising (1) from about 25 to about 99 weight percent of a polyol containing from 2 to 8 hydroxyl groups and having an equivalent weight from 30 to about 200, (2) from about 1 to about 75 weight percent of a macromer containing induced unsaturation, said macromer comprising the reaction product of a polyether polyol having an equivalent weight from 100 to 10,000 with a compound having both ethylenic unsaturation and a group selected from the group consisting of a hydroxyl, carboxyl, anhydride, isocyanate, and epoxy group or mixtures thereof.
Claim 11
Dependent Claim
142 words
A process for the preparation of a stable low viscosity graft polymer dispersion prepared by polymerizing in the presence of a free radical initiator from about 25 to about 70 weight percent based on the total weight of the dispersion, an ethylenically unsaturated monomer or mixture of monomers, in a polyol mixture comprising (1) from about 25 to about 99 weight percent of a polyol containing from 2 to 8 hydroxyl groups and having an equivalent weight from 30 to about 200, (2) from about 1 to about 75 weight percent of a macromer containing induced unsaturation, said macromer comprising the reaction product of a polyether polyol having an equivalent weight from 100 to 10,000 with a compound having both ethylenic unsaturation and a group selected from the group consisting of a hydroxyl, carboxyl, anhydride, isocyanate, and epoxy group or mixtures thereof.
Claim 12
Dependent Claim
26 words
The process of claim 9 wherein the amount of induced saturation is from about 0.001 to about 1.0 mole of unsaturation per mole of polyol mixture.
Claim 13
Dependent Claim
25 words
The process of claim 9 wherein the monomer is selected from the group consisting of styrene, methylstyrene, vinyl toluene, methyl methacrylate, methacrylonitrile, divinylbenzene and acrylonitrile.
Claim 14
Dependent Claim
18 words
The process of claim 9 wherein the monomer is selected from the group consisting of styrene and acrylonitrile.
Claim 15
Dependent Claim
10 words
The process of claim 9 wherein the monomer is styrene.
Claim 16
Dependent Claim
17 words
The process of claim 9 wherein the polymerization occurs in the presence of a chain transfer agent.
Claim 17
Dependent Claim
27 words
The process of claim 9 wherein the chain transfer agent is selected from the group consisting of dodecanethiol, bromotrichloromethane, 2-butanol, 1-butanol, allyl alcohol, 2-mercaptoethanol and octadecyl mercaptan.
Claim 18
Dependent Claim
30 words
The process of claim 9 wherein the concentration of chain transfer agent is from about 0.1 weight percent to about 10 weight percent based on the weight of the monomer.
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) | 1988-06-10 | 1988-12-10 | 1989-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-10 | 1992-12-10 | 1993-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-10 | 1996-12-10 | 1997-06-11 | $7700.00 | Window Closed / Lapsed |