US4528112A
Expired / Lapsed
US
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Polyether polyols from mixed initiators
Assignee: Dow Chemical Co
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Filing: 1983-07-26
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Granted: 1985-07-09
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Expires: 2003-07-26
Abstract
Abstract Novel polyether polyols made by alkoxylating a mixture of initiators are described. The initiator mixture is made up of about 60 to 90 wt. % of a partially alkoxylated trifunctional initiator and 10 to 40 wt. % of a secondary partially alkoxylated initiator having an active hydrogen functionality of from 4 to 8. Preferably, the alkylene oxide component to be reacted with the initiator mixture is a blend of ethylene oxide and propylene oxide. Flexible polyurethane foams made from these polyether polyols have improved load bearing properties as compared with those made from prior art polyols.
Inventors
- 👤 George P. Speranza
- 👤 Michael Cuscurida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:28
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4829
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
140 words
A polyether polyol for use in preparing high load bearing foams, the polyether polyol being produced by reacting a. one or more alkylene oxides with b. a mixture of alkoxylated initiators where the mixture was previously made, by mixing together (1) 60 to 90 wt.% of a trifunctional alkoxylated initiator made by alkoxylating a triol selected from the group consisting of glycerine, trimethylolpropane and triethanolamine with an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, 1,2-butylene oxide and mixtures thereof, and (2) 10 to 40 wt.% of a secondary alkoxylated initiator having an active hydrogen functionality of from 4 to 8 made by alkoxylating a polyol selected from the group consisting of methyl glucoside, sorbitol and sucrose with an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, 1,2-butylene oxide and mixtures thereof.
Claim 2
Dependent Claim
140 words
A polyether polyol for use in preparing high load bearing foams, the polyether polyol being produced by reacting a. one or more alkylene oxides with b. a mixture of alkoxylated initiators where the mixture was previously made, by mixing together (1) 60 to 90 wt.% of a trifunctional alkoxylated initiator made by alkoxylating a triol selected from the group consisting of glycerine, trimethylolpropane and triethanolamine with an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, 1,2-butylene oxide and mixtures thereof, and (2) 10 to 40 wt.% of a secondary alkoxylated initiator having an active hydrogen functionality of from 4 to 8 made by alkoxylating a polyol selected from the group consisting of methyl glucoside, sorbitol and sucrose with an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, 1,2-butylene oxide and mixtures thereof.
Claim 3
Dependent Claim
28 words
The polyether polyol of claim 1 in which the alkylene oxide component is selected from the group consisting of ethylene oxide, propylene oxide, 1,2-butylene oxide and mixtures thereof.
Claim 4
Dependent Claim
21 words
The polyether polyol of claim 1 in which the alkylene oxide component is a mixture of ethylene oxide and propylene oxide.
Claim 5
Dependent Claim
23 words
The polyether polyol of claim 1 in which the resulting polyether polyol has a molecular weight in the range from 1,000 to 20,000.
Claim 6
Dependent Claim
36 words
The polyether polyol of claim 1 in which the reaction is conducted in the presence of a catalytic amount of an alkaline catalyst and at a temperature in the range from about 75° to 150° C.
Claim 7
Dependent Claim
124 words
A polyether polyol for use in preparing high load bearing flexible foams, the polyether polyol being produced by reacting a. a mixture of ethylene oxide and propylene oxide with b. a mixture of alkoxylated initiators where the mixture was previously made by mixing together (1) 60 to 90 wt.% of one trifunctional alkylene oxide adduct of a triol selected from the group consisting of glycerine, trimethylolpropane and triethanolamine, and (2) 10 to 40 wt.% of one secondary initiator having an active hydrogen functionality of from 4 to 8 which is an alkylene oxide adduct of a polyol selected from the group consisting of methyl glucoside, sorbitol and sucrose, where the resulting polyether polyol has a molecular weight in the range from 1,000 to 20,000.
Claim 8
Dependent Claim
124 words
A polyether polyol for use in preparing high load bearing flexible foams, the polyether polyol being produced by reacting a. a mixture of ethylene oxide and propylene oxide with b. a mixture of alkoxylated initiators where the mixture was previously made by mixing together (1) 60 to 90 wt.% of one trifunctional alkylene oxide adduct of a triol selected from the group consisting of glycerine, trimethylolpropane and triethanolamine, and (2) 10 to 40 wt.% of one secondary initiator having an active hydrogen functionality of from 4 to 8 which is an alkylene oxide adduct of a polyol selected from the group consisting of methyl glucoside, sorbitol and sucrose, where the resulting polyether polyol has a molecular weight in the range from 1,000 to 20,000.
Claim 9
Dependent Claim
36 words
The polyether polyol of claim 6 in which the reaction is conducted in the presence of a catalytic amount of an alkaline catalyst and at a temperature in the range from about 75° to 150° C.
Claim 10
Independent Claim
156 words
A method for making polyether polyols comprising reacting a. reacting a triol selected from the group consisting of glycerine, trimethylolpropane and triethanolamine with an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, 1,2-butylene oxide and mixtures thereof to give a trifunctional alkoxylated initiator, b. reacting a polyol having an active hydrogen functionality of from 4 to 8 selected from the group consisting of methyl glucoside, sorbitol and sucrose with an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, 1,2-butylene oxide and mixtures thereof to give a secondary alkoxylated initiator, c. mixing the trifunctional alkoxylated initiator from step a. with the secondary alkoxylated initiator of step b. to give a mixture of alkoxylated initiators consisting of 60 to 90 wt.% trifunctional alkoxylated initiator, and 10 to 40 wt.% secondary alkoxylated initiator, and d. subsequently reacting one or more alkylene oxides with the mixture of alkoxylated initiators from step c.
Claim 11
Independent Claim
156 words
A method for making polyether polyols comprising reacting a. reacting a triol selected from the group consisting of glycerine, trimethylolpropane and triethanolamine with an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, 1,2-butylene oxide and mixtures thereof to give a trifunctional alkoxylated initiator, b. reacting a polyol having an active hydrogen functionality of from 4 to 8 selected from the group consisting of methyl glucoside, sorbitol and sucrose with an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, 1,2-butylene oxide and mixtures thereof to give a secondary alkoxylated initiator, c. mixing the trifunctional alkoxylated initiator from step a. with the secondary alkoxylated initiator of step b. to give a mixture of alkoxylated initiators consisting of 60 to 90 wt.% trifunctional alkoxylated initiator, and 10 to 40 wt.% secondary alkoxylated initiator, and d. subsequently reacting one or more alkylene oxides with the mixture of alkoxylated initiators from step c.
Claim 12
Dependent Claim
28 words
The method of claim 8 in which the alkylene oxide component is selected from the group consisting of ethylene oxide, propylene oxide and 1,2-butylene oxide and mixtures thereof.
Claim 13
Dependent Claim
20 words
The method of claim 8 in which the alkylene oxide component is a mixture of ethylene oxide and propylene oxide.
Claim 14
Dependent Claim
22 words
The method of claim 8 in which the resulting polyether polyol has a molecular weight in the range from 1,000 to 20,000.
Claim 15
Dependent Claim
35 words
The method of claim 8 in which the reaction is conducted in the presence of a catalytic amount of an alkaline catalyst and at a temperature in the range from about 75° to 150° C.
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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) | 1988-07-08 | 1989-01-07 | 1989-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-08 | 1993-01-07 | 1993-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-08 | 1997-01-07 | 1997-07-09 | $7700.00 | Window Closed / Lapsed |