US4481127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyol blends
Assignee: Bayer Corp
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Filing: 1983-08-05
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Granted: 1984-11-06
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Expires: 2003-08-05
Abstract
Abstract The present invention is directed to a polyol blend comprising: (a) from about 5 to about 30% by weight of a member selected from the group consisting of 1,4-butanediol, ethylene glycol, and mixtures thereof, and (b) from about 70 to about 95% by weight of a polyester polyol produced by reacting from 10 to 60 parts by weight of adipic acid with from 40 to 90 parts by weight of a polyoxyethylene glycol having a molecular weight of from 150 to 680, the parts of adipic acid and polyoxyethylene glycol being 100, and wherein said polyester has an hydroxyl number of from about 25 to about 130, and an acid number of 2 or less.
Inventors
- 👤 Robert P. Yeater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:12
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4244; C08G18/4247; C08G18/4252; C08G18/65; C08G18/66; C08G18/6633; C08G18/6637; C08G18/664
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
109 words
A polyol blend comprising: (a) from about 5 to about 30% by weight of a member selected from the group consisting of 1,4-butanediol, ethylene glycol, and mixtures thereof, and (b) from about 70 to about 95% by weight of a polyester polyol produced by reacting from 10 to 60 parts by weight of adipic acid with from 40 to 90 parts by weight of a polyoxyethylene glycol having a molecular weight of from 150 to 680, the parts of adipic acid and polyoxyethylene glycol being 100, and wherein said polyester has an hydroxyl number of from about 25 to about 130 and an acid number of 2 or less.
Claim 2
Dependent Claim
109 words
A polyol blend comprising: (a) from about 5 to about 30% by weight of a member selected from the group consisting of 1,4-butanediol, ethylene glycol, and mixtures thereof, and (b) from about 70 to about 95% by weight of a polyester polyol produced by reacting from 10 to 60 parts by weight of adipic acid with from 40 to 90 parts by weight of a polyoxyethylene glycol having a molecular weight of from 150 to 680, the parts of adipic acid and polyoxyethylene glycol being 100, and wherein said polyester has an hydroxyl number of from about 25 to about 130 and an acid number of 2 or less.
Claim 3
Dependent Claim
20 words
The blend of claim 1 wherein said polyester polyol has an hydroxyl number of from about 35 to about 65.
Claim 4
Dependent Claim
17 words
The blend of claim 2 wherein said polyester polyol has an acid number of 1 or less.
Claim 5
Dependent Claim
10 words
The blend of claim 1 wherein component (a) is 1,4-butandiol.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-06 | 1988-05-07 | 1988-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-06 | 1992-05-07 | 1992-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-06 | 1996-05-07 | 1996-11-06 | $7700.00 | Window Closed / Lapsed |