US4010146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyol blends and polyurethane prepared therefrom
Assignee: FLUROCARBON COMPANY
•
Filing: 1975-09-29
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Granted: 1977-03-01
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Expires: 1995-09-29
Abstract
Abstract A poly(oxyethylene-oxypropylene)glycol and poly(tetramethylene ether)glycol are blended together and the resulting blend and a chain extender are reacted with an organic diisocyanate under conditions which produce a thermoplastically processible polyurethane elastomer. The polyurethane elastomer can be used to advantage for making the sheath of a hydraulic hose.
Inventors
- 👤 David D. Russell
- 👤 George Shkapenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:59
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4804; C08G18/4808; C08G18/4833; C08G18/4837; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6674; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2935
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
127 words
A thermoplastically processible polyurethane prepared by reacting an organic diisocyanate, a low molecular weight glycol chain extender having only primary hydroxyl groups and a blend of from about 5 to about 95 parts by weight per 100 parts of a block copolymer of ethylene oxide and 1,2-propylene oxide having the formula HO[(C.sub.2 H.sub.5 - O).sub.x (C.sub.3 H.sub.6 - O).sub.y (C.sub.2 H.sub.5 - O).sub.z ]H wherein x and z are integers of from 0 to 22 and y is an integer of from 1 to 20 and the molecular weight of the copolymer is between 500 and 3000 and the remainder poly(tetramethylene ether)glycol having a molecular weight of from about 500 to about 3000, said block copolymer containing from about 60 to about 100 percent primary hydroxyl groups.
Claim 2
Dependent Claim
127 words
A thermoplastically processible polyurethane prepared by reacting an organic diisocyanate, a low molecular weight glycol chain extender having only primary hydroxyl groups and a blend of from about 5 to about 95 parts by weight per 100 parts of a block copolymer of ethylene oxide and 1,2-propylene oxide having the formula HO[(C.sub.2 H.sub.5 - O).sub.x (C.sub.3 H.sub.6 - O).sub.y (C.sub.2 H.sub.5 - O).sub.z ]H wherein x and z are integers of from 0 to 22 and y is an integer of from 1 to 20 and the molecular weight of the copolymer is between 500 and 3000 and the remainder poly(tetramethylene ether)glycol having a molecular weight of from about 500 to about 3000, said block copolymer containing from about 60 to about 100 percent primary hydroxyl groups.
Claim 3
Dependent Claim
15 words
A hydraulic hose having a sheath prepared by extrusion of the polyurethane of claim 1.
Claim 4
Dependent Claim
11 words
The polyurethane of claim 1 wherein the organic diisocyanate is MDI.
Claim 5
Dependent Claim
12 words
The polyurethane of claim 1 where the chain extender is diethylene glycol.
Claim 6
Dependent Claim
12 words
The polyurethane of claim 1 wherein the chain extender is 1,4-butane diol.
Claim 7
Dependent Claim
12 words
The polyurethane of claim 1 wherein the chain extender is bis-hydroxy-ethylene terephthalate.
Claim 8
Dependent Claim
15 words
The polyurethane of claim 1 wherein the chain extender is bis-hydroxy ethyl ether of hydroquinone.
References Cited (Backward Citations)
US3627714A
Cited
US3915937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-29 | 1980-08-30 | 1981-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-29 | 1984-08-30 | 1985-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-29 | 1988-08-30 | 1989-03-01 | $7700.00 | Window Closed / Lapsed |