US4841007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorinated polyetherurethanes and medical devices therefrom
Assignee: Becton Dickinson and Co
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Filing: 1988-03-28
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Granted: 1989-06-20
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Expires: 2008-03-28
Abstract
Abstract Non-blocking, hemocompatible, thermoplastic, fluorinated polyetherurethanes and a method for their preparation from fluorinated polyether glycols, isocyanates, chain extenders and a non-fluorinated polyol. The method includes two steps in which the fluorinated glycol is reacted initially with the diisocyanate to give a prepolymer having terminal isocyanate groups, and the prepolymer is then reacted with the extender and non-fluorinated polyol. Medical devices are fabricated from the fluorinated polyetherurethane.
Inventors
- 👤 Richard J. Zdrahala
- 👤 Marc A. Strand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:06
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5003; C08G18/5015; A; A61; A61L; A61L33/00; A61L33/06; A61L33/068; C08G18/08; C08G18/10
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
55 words
A thermoplastic polyetherurethane consisting substantially of a product from the reaction of a diisocyanate, a fluorinated polyol, a nonfluorinated polyol selected from the group consisting of a polyalkyleneoxide polyol and a polyester polyol and a chain extender of 2 to 12 carbon atoms selected from the group consisting of a diol, diamine and amino alcohol.
Claim 2
Dependent Claim
55 words
A thermoplastic polyetherurethane consisting substantially of a product from the reaction of a diisocyanate, a fluorinated polyol, a nonfluorinated polyol selected from the group consisting of a polyalkyleneoxide polyol and a polyester polyol and a chain extender of 2 to 12 carbon atoms selected from the group consisting of a diol, diamine and amino alcohol.
Claim 3
Dependent Claim
23 words
The polyetherurethane of claim 1 wherein said diisocyanate is selected from the group consisting of 4,4'-diphenylmethane-diisocyanate, 3,3'-diphenylmethane-diisocyanate, 4,4'-dicyclohexyl-methane-diisocyanate, isophorone diisocyanate and hexamethylene diisocyanate.
Claim 4
Dependent Claim
51 words
The polyetherurethane of claim 1 wherein said fluorinated polyol is selected from the group having the formula ##STR2## wherein R is a perfluorinated alkyl group having about 1 to 12 carbon atoms, x is about 1 to 4, Y is about 0 to 20 and Z is about 2 to 5.
Claim 5
Dependent Claim
13 words
The polyetherurethane of claim 1 wherein said polyalkyleneoxide polyol is polytetramethylene ether glycol.
Claim 6
Dependent Claim
36 words
The polyetherurethane of claim 1 wherein said chain extender is selected from the group consisting of 1,4-butanediol, ethylene glycol; diethylene glycol; triethylene glycol; 1,2-propanediol; 1,3-propanediol; 1,6-hexanediol; 1,4-bis-hydroxymethyl cyclohexane, hydroquinone, dihydroxyethyl ether, ethanolamine, ethylenediamine and hexamethyl- enediamine.
Claim 7
Dependent Claim
39 words
A thermoplastic polyetherurethane consisting substantially of a product from the reaction of a diisocyanate, a fluorinated polyol and a chain extender of 2 to 12 carbon atoms selected from the group consisting of a diol, diamine and amino alcohol.
Claim 8
Dependent Claim
39 words
A thermoplastic polyetherurethane consisting substantially of a product from the reaction of a diisocyanate, a fluorinated polyol and a chain extender of 2 to 12 carbon atoms selected from the group consisting of a diol, diamine and amino alcohol.
Claim 9
Dependent Claim
30 words
A thermoplastic polyetherurethane consisting substantially of a product from the reaction of 4,4'-diphenylmethane-diisocyanate, a fluorinated polyether polyol, polytetramethylenether glycol and a chain extending diol of 2 to 6 carbon atoms.
Claim 10
Dependent Claim
30 words
A thermoplastic polyetherurethane consisting substantially of a product from the reaction of 4,4'-diphenylmethane-diisocyanate, a fluorinated polyether polyol, polytetramethylenether glycol and a chain extending diol of 2 to 6 carbon atoms.
Claim 11
Independent Claim
53 words
A method for preparing a thermoplastic polyetherurethane consisting substantially of: reacting a fluorinated polyol with a diisocyanate to give a prepolymer having isocyanate terminal groups; and reacting said isocyanate terminal groups with a chain extender of 2 to 12 carbon atoms selected from the group consisting of a diol, diamine and amino alcohol.
Claim 12
Independent Claim
53 words
A method for preparing a thermoplastic polyetherurethane consisting substantially of: reacting a fluorinated polyol with a diisocyanate to give a prepolymer having isocyanate terminal groups; and reacting said isocyanate terminal groups with a chain extender of 2 to 12 carbon atoms selected from the group consisting of a diol, diamine and amino alcohol.
Claim 13
Dependent Claim
32 words
The method in accordance with claim 8 wherein said isocyanate terminal groups are further reacted with a nonfluorinated polyol selected from the group consisting of a polyalkyleneoxide polyol and a polyester polyol.
Claim 14
Dependent Claim
51 words
The method of claim 8 wherein said fluorinatd polyol is selected from the group having the formula ##STR3## wherein R is a perfluorinated alkyl group having about 1 to 12 carbon atoms, x is about 1 to 4, Y is about 0 to 20 and Z is about 2 to 5.
Claim 15
Independent Claim
46 words
A method for preparing a thermoplastic polyetherurethane consisting substantially of reacting a fluorinated polyether polyol with 4,4'-diphenylmethane-diisocyanate to give a prepolymer having isocyanate terminal groups and reacting said terminal groups with a polytetramethylene ether glycol and a chain extending diol of 2 to 6 carbon atoms.
Claim 16
Independent Claim
46 words
A method for preparing a thermoplastic polyetherurethane consisting substantially of reacting a fluorinated polyether polyol with 4,4'-diphenylmethane-diisocyanate to give a prepolymer having isocyanate terminal groups and reacting said terminal groups with a polytetramethylene ether glycol and a chain extending diol of 2 to 6 carbon atoms.
References Cited (Backward Citations)
US4098742A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-06-19 | 1992-12-19 | 1993-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-19 | 1996-12-19 | 1997-06-20 | $3760.00 | Window Closed / Lapsed |
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