US4113785A
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Polyether polyols and method of preparing same
Assignee: BASF Corp
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Filing: 1976-10-29
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Granted: 1978-09-12
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Expires: 1996-10-29
Abstract
Abstract New polyether polyols of predetermined structure are prepared by reacting polyether bis alcoholates with selected bis epoxides. Specifically, a polyoxyalkylene glycol is converted to the bis alcoholate, and then the bis alcoholate is reacted with an equivalent amount of a glycol bis glycidyl ether, with the reactants being mixed together all at once. The polyether polyalcoholate thus obtained is converted to a high molecular weight polyether polyol by acid neutralization or ion exchange.
Inventors
- 👤 Herbert Helfert
- 👤 Pauls Davis
- 👤 William Keith Langdon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:56
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/331; C08G65/3311; C08G65/3312; C08G65/26; C08G65/321; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
117 words
A process for preparing a high molecular weight water soluble polyoxyalkylene polyol, which comprises the following steps in the order given, converting a polyoxyalkylene glycol having a molecular weight greater than about 500 to the dialkalialcholate form in substantially complete conversion, reacting said alcoholate with an alkylene glycol bis glycidyl ether or a polyoxyalkylene glycol bis glycidyl ether under anhydrous conditions at a temperature of from about 25° to about 250° C., said reactants being combined all at once in equivalent amounts under conditions of mixing for a time sufficient to complete the reaction, and converting the alcoholate groups in the final mixture to alcohol groups, whereby a primarily straight chain high molecular weight product is obtained.
Claim 2
Dependent Claim
117 words
A process for preparing a high molecular weight water soluble polyoxyalkylene polyol, which comprises the following steps in the order given, converting a polyoxyalkylene glycol having a molecular weight greater than about 500 to the dialkalialcholate form in substantially complete conversion, reacting said alcoholate with an alkylene glycol bis glycidyl ether or a polyoxyalkylene glycol bis glycidyl ether under anhydrous conditions at a temperature of from about 25° to about 250° C., said reactants being combined all at once in equivalent amounts under conditions of mixing for a time sufficient to complete the reaction, and converting the alcoholate groups in the final mixture to alcohol groups, whereby a primarily straight chain high molecular weight product is obtained.
Claim 3
Dependent Claim
38 words
A process for preparing a high molecular weight polyoxyalkylene polyol, as defined in claim 1, in which the reaction is carried out in the presence of an organic solvent, which is inert to the reactants and reaction products.
Claim 4
Dependent Claim
44 words
A process for preparing a high molecular weight polyoxyalkylene polyol, as defined in claim 1, in which the alcoholate reactant has the formula: M--O(RC.sub.2 H.sub.3 --O).sub.n --M wherein R is hydrogen or methyl, n is an integer, and M is sodium, potassium or lithium.
Claim 5
Dependent Claim
20 words
A process for preparing a high molecular weight polyoxyalkylene polyol, as defined in claim 3, in which R is methyl.
Claim 6
Dependent Claim
26 words
A process for preparing a high molecular weight polyoxyalkylene polyol, as defined in claim 3, in which at least 80% of the R groups are hydrogen.
Claim 7
Dependent Claim
24 words
A process for preparing a high molecular weight polyoxyalkylene polyol, as defined in claim 1, in which the diepoxide is glycol bis glycidyl ether.
Claim 8
Dependent Claim
150 words
A high molecular weight, water soluble primarily straight chain, polyoxyalkylene polyol obtained by combining equivalent amounts of an alcoholate having the formula: M--O(RC.sub.2 H.sub.3 --O).sub.n --M wherein R is hydrogen or methyl, M is sodium, potassium, or lithium, n is an integer having a sufficient value to provide an average molecular weight of the glycol form of the alcoholate above about 500, and a diepoxy compound having the formula: ##STR5## wherein Z is --O--; --O(CH 2 ) p --O-- where p is 2-10; or --O(RC 2 H 3 --O) m , where R is hydrogen or methyl and m is an integer from 1 to 5, with the reactants combined all at once with mixing at a temperature of from about 25° to about 1250° C., and with the reaction being carried out under substantially anhydrous conditions, and replacing the M groups with hydrogen by ion exchange or acid neutrilization.
Claim 9
Dependent Claim
150 words
A high molecular weight, water soluble primarily straight chain, polyoxyalkylene polyol obtained by combining equivalent amounts of an alcoholate having the formula: M--O(RC.sub.2 H.sub.3 --O).sub.n --M wherein R is hydrogen or methyl, M is sodium, potassium, or lithium, n is an integer having a sufficient value to provide an average molecular weight of the glycol form of the alcoholate above about 500, and a diepoxy compound having the formula: ##STR5## wherein Z is --O--; --O(CH 2 ) p --O-- where p is 2-10; or --O(RC 2 H 3 --O) m , where R is hydrogen or methyl and m is an integer from 1 to 5, with the reactants combined all at once with mixing at a temperature of from about 25° to about 1250° C., and with the reaction being carried out under substantially anhydrous conditions, and replacing the M groups with hydrogen by ion exchange or acid neutrilization.
Claim 10
Dependent Claim
16 words
A high molecular weight polyoxyalkylene polyol, as defined in claim 7, in which R is methyl.
Claim 11
Dependent Claim
22 words
A high molecular weight polyoxyalkylene polyol, as defined in claim 7, in which at least 80% of the R groups are hydrogen.
Claim 12
Dependent Claim
20 words
A high molecular weight polyoxyalkylene polyol, as defined in claim 7, in which the diepoxide is glycol bis glycidyl ether.
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) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |