EP0132302A2
Expired / Lapsed
EP
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Polyether polyols from mixed initiators
Assignee: Lyondell Chemical Technology LP
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Filing: 1984-06-21
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Granted: —
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Expires: 2004-06-21
Abstract
Abstract Polyether polyols suitable for the production of flexible polyurethane foams having improved load-bearing properties are obtained by reacting one of more alkylene oxides with a mixture of initiators comprising 1) 60 to 90 weight % of a trifunctional partially alkoxylated initiator, and 2) 10 to 40 weight % of a secondary partially alkoxylated initiator having an active hydrogen functionality of from 4 to 8. Preferably, the triol initiator is partially alkoxylated, the higher functional alkoxylated initiator is added, and the resulting mixture is further alkoxylated.
Inventors
- 👤 George Phillip Speranza
- 👤 Michael Cuscurida
- 👤 Bruce William Peterson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 14:38
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: 9
Claim 1
Independent Claim
65 words
A method for making polyether polyols by reacting one or more alkylene oxides with an initiator having active hydrogen, characterized in that said initiator comprises a mixture of initiators comprising 1) 60 to 90 weight % of a trifunctional partially alkoxylated initiator, and 2) 10 to 40 weight % of a secondary partially alkoxylated initiator having an active hydrogen functionality of from 4 to 8.
Claim 2
Independent Claim
65 words
A method for making polyether polyols by reacting one or more alkylene oxides with an initiator having active hydrogen, characterized in that said initiator comprises a mixture of initiators comprising 1) 60 to 90 weight % of a trifunctional partially alkoxylated initiator, and 2) 10 to 40 weight % of a secondary partially alkoxylated initiator having an active hydrogen functionality of from 4 to 8.
Claim 3
Dependent Claim
24 words
A method according to Claim 1 characterized in that the alkylene oxide component comprises ethylene oxide, propylene oxide, 1,2-butylene oxide or a mixture thereof.
Claim 4
Dependent Claim
24 words
A method according to Claim 1 or 2 characterized in that the alkylene oxide component comprises a mixture of ethylene oxide and propylene oxide.
Claim 5
Independent Claim
43 words
A method according to any of the preceding Claims characterized in that the trifunctional initiator is an alkylene oxide adduct of glycerol, trimethylolpropane or triethanolamine, and in that the secondary initiator is an alkylene oxide adduct of methyl glucoside, ethylenediamine, sorbitol or sucrose.
Claim 6
Independent Claim
32 words
A method according to any of the preceding Claims characterized in that the reaction is conducted in the presence of an alkaline catalyst and at a temperature of from 75 to 150°C.
Claim 7
Independent Claim
31 words
A method according to any of the preceding Claims characterized in that triol initiator is partially alkoxylated, the higher functional alkoxylated initiator is added, and the resulting mixture is further alkoxylated.
Claim 8
Independent Claim
43 words
A method for producing a flexible polyurethane foam by reacting an organic polyisocyanate and a polyol in the presence of a polyurethane-formation catalyst, characterized in that the polyol is a polyether polyol obtainable by a method according to any of the preceding Claims.
Claim 9
Dependent Claim
21 words
A method according to Claim 7 characterized in that the polyether polyol has a molecular weight of from 1,000 to 20,000.
References Cited (Backward Citations)
No citation records indexed.
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