US4554340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homogeneous, storage-stable polyol compositions of high ethylene glycol content and their use for the production of polyurethanes
Assignee: Bayer AG
•
Filing: 1985-02-19
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Granted: 1985-11-19
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Expires: 2005-02-19
Abstract
Abstract A homogeneous, storage-stable, emulsifier-free polyol mixture having a high mixed OH-number and a high ethylene glycol content comprising 100 parts of a relatively high molecular weight polyalkylene oxide polyol having an OH-number of from 20 to 210, which contains at least 5%, and less than 80%, by weight, of terminal ethylene oxide blocks, from 0.1 to 30 parts of a low molecular weight diol mixture having an OH-- number of 1200 to 1650 in the form of a reaction product of 1 mole of ethylene glycol with 0.1 to 0.5 moles of propylene oxide, optionally, up to 5 parts of di- and/or tri-functional compounds containing reactive hydrogen atoms and having a molecular weight of from 32 to 399, and optionally, other auxiliaries and additives known in the production of polyurethanes. Also, polyurethanes produced using these polyol mixtures.
Inventors
- 👤 Rudolf Heusch
- 👤 Werner Rasshofer
- 👤 Wolfgang Reichmann
- 👤 Adolf Richartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:45
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/30; C08G18/32; C08G18/3203; C08G18/3206; C08G18/6674; C08G2120/00; C08G2130/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
105 words
A process for the production of polyurethanes comprising reacting isocyanates with a homogeneous, storage-stable, emulsifier-free polyol mixture having a high mixed OH-number and a high ethylene glycol content comprising 100 parts of a relatively high molecular weight polyalkylene oxide polyol having an OH-number of from 20 to 210, which contains at least 5%, and less than 80%, by weight of terminal ethylene oxide blocks and from 0.1 to 30 parts of a low molecular weight diol mixture having an OH-number of 1200 to 1650 in the form of a reaction product of 1 mole of ethylene glycol with 0.1 to 0.5 moles of propylene oxide.
Claim 2
Dependent Claim
105 words
A process for the production of polyurethanes comprising reacting isocyanates with a homogeneous, storage-stable, emulsifier-free polyol mixture having a high mixed OH-number and a high ethylene glycol content comprising 100 parts of a relatively high molecular weight polyalkylene oxide polyol having an OH-number of from 20 to 210, which contains at least 5%, and less than 80%, by weight of terminal ethylene oxide blocks and from 0.1 to 30 parts of a low molecular weight diol mixture having an OH-number of 1200 to 1650 in the form of a reaction product of 1 mole of ethylene glycol with 0.1 to 0.5 moles of propylene oxide.
Claim 3
Dependent Claim
39 words
A process according to claim 1, characterized in that the polyol mixture also comprises other di-, tri- or a combination of di- and tri- functional compounds containing isocyanate-reactive hydrogen atoms and having molecular weights of from 32 to 399.
Claim 4
Dependent Claim
36 words
A process according to claim 1 or 2, characterized in that other polyols containing isocyanate-reactive hydrogen atoms and having molecular weights of from 400 to 10,000 are also reacted with isocyanates for the production of polyurethanes.
Claim 5
Dependent Claim
47 words
A process according to claim 3, characterized in that other auxiliaries and additives known in the production of polyurethanes are contained in the polyol mixture, are added separately to the reaction mixture or are contained in the polyol mixture and are added separately to the reaction mixture.
References Cited (Backward Citations)
US472405A
Cited
DE1770703A1
Cited
US3865762A
Cited
US3945393A
Cited
US4029493A
Cited
DE2309861A1
Cited
US4125505A
Cited
US4226756A
Cited
US4141852A
Cited
US4273884A
Cited
US4351753A
Cited
US4351753B1
Cited
EP0069287A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-18 | 1989-05-20 | 1989-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-18 | 1993-05-20 | 1993-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-18 | 1997-05-20 | 1997-11-19 | $7700.00 | Window Closed / Lapsed |