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Patent US4485032A successfully refreshed from Google Patents.
US4485032A
Expired / Lapsed
US
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Compatible polyol blends
Assignee: Dow Chemical Co
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Filing: 1983-09-12
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Granted: 1984-11-27
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Expires: 2003-09-12
Abstract
Abstract Compositions containing a relatively high molecular weight polyol and ethylene glycol which compositions are incompatible, i.e. separate into two distinct phases upon storage, are compatibilized by the admixture therewith of urea or a substituted urea.
Inventors
- 👤 Franciszek Olstowski
- 👤 Richard D. Peffley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:44
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6674; C08K; C08K5/00; C08K5/16; C08K5/21; C08G2120/00; C08G2130/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
176 words
A compatible mixture comprising (A) a normally incompatible mixture comprising (1) at least one relatively high molecular weight polyol having an average hydroxyl functionality of from about 2 to about 4; an average molecular weight of at least about 1000; and with at least about 30 percent, of the hydroxyl groups being primary hydroxyl groups; (2) at least one relatively low molecular weight polyol having an average hydroxyl functionality of from about 2 to about 6; a molecular weight of less than about 1000; (B) at least one material which is either a liquid or a solid having a melting point not greater than about 200° C. which material is represented by the formula ##STR2## wherein each R is independently hydrogen or a hydrocarbyl group having a sufficient number of carbon atoms such that the molecular weight of such group is not greater than about 400; said material being present in a quantity sufficient to maintain the composition in a single liquid phase for at least about 5 days at about 25° C. without causing gellation.
Claim 2
Dependent Claim
176 words
A compatible mixture comprising (A) a normally incompatible mixture comprising (1) at least one relatively high molecular weight polyol having an average hydroxyl functionality of from about 2 to about 4; an average molecular weight of at least about 1000; and with at least about 30 percent, of the hydroxyl groups being primary hydroxyl groups; (2) at least one relatively low molecular weight polyol having an average hydroxyl functionality of from about 2 to about 6; a molecular weight of less than about 1000; (B) at least one material which is either a liquid or a solid having a melting point not greater than about 200° C. which material is represented by the formula ##STR2## wherein each R is independently hydrogen or a hydrocarbyl group having a sufficient number of carbon atoms such that the molecular weight of such group is not greater than about 400; said material being present in a quantity sufficient to maintain the composition in a single liquid phase for at least about 5 days at about 25° C. without causing gellation.
Claim 3
Dependent Claim
58 words
A compatible mixture of claim 1 wherein Component (A-1) has an average hydroxyl functionality of from about 2 to about 3; an average molecular weight of from about 2000 to about 8000; Component (A-2) has an average hydroxyl functionality of from about 2 to about 4 and an average molecular weight of from about 60 to about 600.
Claim 4
Dependent Claim
28 words
A compatible mixture of claim 2 wherein Component (A-1) has an average hydroxyl functionality of about 3 and contains at least about 10 weight percent terminal oxyethylene groups.
Claim 5
Dependent Claim
31 words
A compatible mixture of claim 3 wherein Component (A-1) is a glycerine initiated polyoxypropylene glycol containing at least about 14 weight percent terminal oxyethylene groups and Component (A-2) is ethylene glycol.
Claim 6
Dependent Claim
19 words
A compatible mixture of claim 4 wherein said compatible mixture contains a minor amount of a primary amine-containing material.
Claim 7
Dependent Claim
14 words
A compatible mixture of claim 1 wherein Component (B) is urea or dimethyl urea.
Claim 8
Dependent Claim
14 words
A compatible mixture of claim 2 wherein Component (B) is urea or dimethyl urea.
Claim 9
Dependent Claim
14 words
A compatible mixture of claim 3 wherein Component (B) is urea or dimethyl urea.
Claim 10
Dependent Claim
14 words
A compatible mixture of claim 4 wherein Component (B) is urea or dimethyl urea.
Claim 11
Dependent Claim
14 words
A compatible mixture of claim 5 wherein Component (B) is urea or dimethyl urea.
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) | 1987-11-27 | 1988-05-28 | 1988-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-27 | 1992-05-28 | 1992-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-27 | 1996-05-28 | 1996-11-27 | $7700.00 | Window Closed / Lapsed |