US4703069A
Expired / Lapsed
US
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Polyether polyols, their manufacture and use in polyurethanes production
Assignee: Imperial Chemical Industries Ltd
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Filing: 1986-06-27
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Granted: 1987-10-27
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Expires: 2006-06-27
Abstract
Abstract This invention relates to polyether polyols having an average hydroxyl value in the range of 100 to 250 mgKOH/g, which are alkoxylated derivatives of a polyhydric alcohol being a mixture of compounds according to formula (I) or/and (II) <IMAGE> (I) <IMAGE> (II) wherein R1 is H, CH3 or OCH3, R2 is H, CH2OH or CH2 C(CH2OH)3, and R3 and R4 are H, CH2OH or CH2OCH3.
Inventors
- 👤 James P. Brown
- 👤 Ronald N. May
- 👤 David Randall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:05
CPC Classifications
C; C07; C07D; C07D319/00; C07D319/04; C07D319/06; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/487; C08G18/4883; C08G65/00; C08G65/02; C08G65/26; C08G65/2603; C08G65/2606
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
106 words
A polyether polyol having an average hydroxyl value in the range of 100 to 250 mgKOH/g which is an alkoxylated derivative of a polyhydric alcohol obtained as by-product in pentaerythritol manufacture and consisting essentially of a mixture of compounds according to formula (I) ##STR3## wherein R 1 is H, CH 3 or OCH 3 R 2 is H, CH 2 OH or CH 2 C(CH 2 OH) 3 R 3 and R 4 which may be the same or different are H, CH 2 OH, CH 2 OCH 3 provided that only one of R 3 or R 4 may be CH 2 OCH 3 .
Claim 2
Dependent Claim
106 words
A polyether polyol having an average hydroxyl value in the range of 100 to 250 mgKOH/g which is an alkoxylated derivative of a polyhydric alcohol obtained as by-product in pentaerythritol manufacture and consisting essentially of a mixture of compounds according to formula (I) ##STR3## wherein R 1 is H, CH 3 or OCH 3 R 2 is H, CH 2 OH or CH 2 C(CH 2 OH) 3 R 3 and R 4 which may be the same or different are H, CH 2 OH, CH 2 OCH 3 provided that only one of R 3 or R 4 may be CH 2 OCH 3 .
Claim 3
Dependent Claim
16 words
A polyether polyol in accordance with claim 1 wherein the alkoxylated derivative is a propoxylated derivative.
Claim 4
Dependent Claim
12 words
A polyether polyol blend comprising a polyether polyol according to claim 1.
Claim 5
Dependent Claim
11 words
A compatibilising additive comprising a polyether polyol according to claim 1.
Claim 6
Dependent Claim
24 words
A composition comprising 1 to 20 parts by weight of a polyether polyol according to claim 1 and 100 parts of a polyol blend.
Claim 7
Dependent Claim
24 words
A composition comprising 5 to 15 parts by weight of a polyether polyol according to claim 1 and 100 parts of a polyol blend.
Claim 8
Dependent Claim
31 words
A polyol blend comprising a polyether polyol according to claim 1 in addition to one or more catalysts, blowing agents, flame-retardant, surfactants, fillers and other usual ingredients used in polyurethane manufacture.
Claim 9
Dependent Claim
43 words
A process to manufacture rigid polyurethane foams comprising reacting a polyether and/or polyester polyol and a polyisocyanate in the presence of 1 to 20% parts by weight, for 100 parts of said polyether/or polyester polyol, of a polyether polyol according to claim 1.
Claim 10
Dependent Claim
11 words
A polyurethane product made according to the process of claim 8.
References Cited (Backward Citations)
US3290387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-26 | 1991-04-27 | 1991-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-26 | 1995-04-27 | 1995-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-26 | 1999-04-27 | 1999-10-27 | $7700.00 | Window Closed / Lapsed |