US4273884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable emulsions of polyols and crosslinkers for polyurethanes
Assignee: Huntsman Corp
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Filing: 1980-05-12
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Granted: 1981-06-16
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Expires: 2000-05-12
Abstract
Abstract A stable emulsion of a high molecular weight polyol and either ethylene glycol or 1,4-butane diol is made by adding to the mixture an ethylene oxide/propylene oxide copolymer diol having an average molecular weight of above about 12,000 and an ethylene oxide content of from about 70% to 90%. The stable emulsion is useful as a reactant in RIM polyurethane plastics.
Inventors
- 👤 Richard J. G. Dominguez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:32
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6674; C08G18/40; C08G18/48; C08G18/4804; C08G2120/00; C08G2130/00; Y; Y10; Y10S; Y10S521/00; Y10S521/914
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
51 words
An emulsion of a polyol having an hydroxy number of from about 56 to about 24 and ethylene glycol and an emulsifier comprising an ethylene oxide/propylene oxide block copolymer diol having an average molecular weight of above about 12,000 and an ethylene oxide content of from about 70% to about 90%.
Claim 2
Dependent Claim
51 words
An emulsion of a polyol having an hydroxy number of from about 56 to about 24 and ethylene glycol and an emulsifier comprising an ethylene oxide/propylene oxide block copolymer diol having an average molecular weight of above about 12,000 and an ethylene oxide content of from about 70% to about 90%.
Claim 3
Dependent Claim
16 words
An emulsion as in claim 1 wherein the polyol has an hydroxyl number of about 26.
Claim 4
Dependent Claim
33 words
An emulsion as in claim 1 wherein the emulsifier is an ethylene oxide/propylene oxide block copolymer diol having an average molecular weight of about 13,500 and an ethylene oxide content of about 80%.
Claim 5
Dependent Claim
51 words
An emulsion of a polyol having an hydroxy number of from about 56 to about 24 and 1,4-butane diol and an emulsifier comprising an ethylene oxide/propylene oxide block copolymer diol having an average molecular weight of above about 12,000 and an ethylene oxide content of from about 70% to about 90%.
Claim 6
Dependent Claim
51 words
An emulsion of a polyol having an hydroxy number of from about 56 to about 24 and 1,4-butane diol and an emulsifier comprising an ethylene oxide/propylene oxide block copolymer diol having an average molecular weight of above about 12,000 and an ethylene oxide content of from about 70% to about 90%.
Claim 7
Dependent Claim
16 words
An emulsion as in claim 4 wherein the polyol has an hydroxyl number of about 26.
Claim 8
Dependent Claim
33 words
An emulsion as in claim 4 wherein the emulsifier is an ethylene oxide/propylene oxide block copolymer diol having an average molecular weight of about 13,500 and an ethylene oxide content of about 80%.
Claim 9
Dependent Claim
71 words
In a method for making a RIM polyurethane product wherein a polyol, a chain extender comprising ethylene glycol and/or 1,4-butane diol and a polyisocyanate are reacted in a closable mold the improvement which comprises emulsifying the polyol and chain-extender with an effective amount of an ethylene oxide/propylene oxide block copolymer having an average molecular weight of above about 12,000 and an ethylene oxide content of from about 70% to about 90%.
Claim 10
Dependent Claim
71 words
In a method for making a RIM polyurethane product wherein a polyol, a chain extender comprising ethylene glycol and/or 1,4-butane diol and a polyisocyanate are reacted in a closable mold the improvement which comprises emulsifying the polyol and chain-extender with an effective amount of an ethylene oxide/propylene oxide block copolymer having an average molecular weight of above about 12,000 and an ethylene oxide content of from about 70% to about 90%.
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) | 1984-06-15 | 1984-12-15 | 1985-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-15 | 1988-12-15 | 1989-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-15 | 1992-12-15 | 1993-06-16 | $7700.00 | Window Closed / Lapsed |