US4948860A
Expired / Lapsed
US
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Melt processable polyurethaneurea copolymers and method for their preparation
Assignee: Becton Dickinson and Co
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Filing: 1989-05-01
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Granted: 1990-08-14
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Expires: 2009-05-01
Abstract
Abstract Melt processable polyurethaneureas are prepared from a diisocyanate, a macroglycol, a diol chain extender and a diamine chain extender. Water may be included as a reactant, and the polymer may contain an additive such as a radiopaque material. The invention includes a one-pot bulk polymerization method for preparation of the polymers.
Inventors
- 👤 Donald D. Solomon
- 👤 Anthony J. Walder
- 👤 Can B. Hu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:47
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7657; C08G18/7664; C08G18/7671; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/61; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6681; C08G18/6685
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
59 words
A method for producing a melt processable polyurethaneurea comprising combining with mixing a diisocyanate and a mixture of a polyetherglycol having a molecular weight of about 500 to 3,000, a diol chain extender and a diamine chain extender at a temperature sufficient to induce an exotherm to give a clear and uniform melt of polyurethaneurea and curing said polyurethaneurea.
Claim 2
Independent Claim
59 words
A method for producing a melt processable polyurethaneurea comprising combining with mixing a diisocyanate and a mixture of a polyetherglycol having a molecular weight of about 500 to 3,000, a diol chain extender and a diamine chain extender at a temperature sufficient to induce an exotherm to give a clear and uniform melt of polyurethaneurea and curing said polyurethaneurea.
Claim 3
Dependent Claim
36 words
The method in accordance with claim 1 wherein said combining step is performed with a diisocyanate selected from the group consisting of 4,4'-diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate and methylene bis (4-cyclohexyl isocyanate), and hexamethylene diisocyanate.
Claim 4
Dependent Claim
26 words
The method in accordance with claim 1 wherein said combining step is performed with a polyetherglycol selected from the group consisting of polyethyleneoxide, polypropyleneoxide and polytetramethyleneoxide.
Claim 5
Dependent Claim
38 words
The method in accordance with claim 1 wherein said combining step is performed with a diol selected from the group consisting of butanediol, ethylene glycol; diethylene glycol; triethylene glycol; 1,2-propanediol; 1,3-propanediol; 1,6-hexanediol; 1,4-bis-hydroxymethyl cyclohexane and hydroquinone dihydroxyethyl ether.
Claim 6
Dependent Claim
29 words
The method in accordance with claim 1 wherein said combining step is performed with a diamine selected from the group consisting of ethylenediamine, hexamethylenediamine octamethylenediamine, dodecamethylenediamine, 1,2-phenylenediamine and 2-methylpentamethylenediamine.
Claim 7
Dependent Claim
31 words
The method in accordance with claim 1 wherein said combining step is further performed with a reagent selected from the group consisting of water, a silicone glycol and a radiopaque material.
Claim 8
Independent Claim
47 words
A method for producing a melt processable polyurethaneurea comprising combining with mixing a polyisocyanate, a macroglycol, a diol chain extender and a diamine chain extender at a temperature sufficient to induce an exotherm to give a clear and uniform melt of thermoplastic polyurethaneurea and curing said polyurethaneurea.
Claim 9
Independent Claim
47 words
A method for producing a melt processable polyurethaneurea comprising combining with mixing a polyisocyanate, a macroglycol, a diol chain extender and a diamine chain extender at a temperature sufficient to induce an exotherm to give a clear and uniform melt of thermoplastic polyurethaneurea and curing said polyurethaneurea.
Claim 10
Dependent Claim
35 words
The method in accordance with claim 7 wherein said combining step is performed with a macroglycol selected from the group consisting of a silicone glycol, a polyester glycol, and polylactone glycol and a polyether glycol.
Claim 11
Independent Claim
57 words
A method for producing a melt processable polyurethaneurea comprising adding 4,4'-diphenylmethane diisocyanate, with mixing, to a mixture of butanediol, 2-methylpentamethylenediamine, water and polytetramethyleneoxide having a molecular weight of about 500 to 3,000 at a temperature sufficient to induce an exotherm to give a clear uniform melt of a polyurethaneurea and moisture curing said polyurethaneurea at ambient temperature.
Claim 12
Independent Claim
57 words
A method for producing a melt processable polyurethaneurea comprising adding 4,4'-diphenylmethane diisocyanate, with mixing, to a mixture of butanediol, 2-methylpentamethylenediamine, water and polytetramethyleneoxide having a molecular weight of about 500 to 3,000 at a temperature sufficient to induce an exotherm to give a clear uniform melt of a polyurethaneurea and moisture curing said polyurethaneurea at ambient temperature.
Claim 13
Dependent Claim
33 words
A melt processable polyurethaneurea comprising a product from the reaction of a diisocyanate, a polyetherglycol having a molecular weight of about 500 to 3,000, a diol chain extender and a diamine chain extender.
Claim 14
Dependent Claim
33 words
A melt processable polyurethaneurea comprising a product from the reaction of a diisocyanate, a polyetherglycol having a molecular weight of about 500 to 3,000, a diol chain extender and a diamine chain extender.
Claim 15
Dependent Claim
28 words
The polyurethaneurea of claim 10 wherein said diisocyanate is selected from the group consisting of 4,4'-diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate, methylene bis (4-cyclohexyl isocyanate), and hexamethylene diisocyanate.
Claim 16
Dependent Claim
19 words
The polyurethaneurea of claim 10 wherein said polyetherglycol is selected from the group consisting of polyethyleneoxide, polypropyleneoxide and polytetramethyleneoxide.
Claim 17
Dependent Claim
31 words
The polyurethaneurea of claim 10 wherein said diol is selected from the group consisting of butanediol, ethylene glycol; diethylene glycol; triethylene glycol; 1,2-propanediol; 1,3-propanediol; 1,6-hexanediol; 1,4-bis-hydroxymethyl cyclohexane, and hydroquinone dihyroxyethyl ether.
Claim 18
Dependent Claim
22 words
The polyurethaneurea of claim 10 wherein said diamine is selected from the group consisting of ethylenediamine, hexamethylenediamine octamethylenediamine, dodecamethylenediamine, 1,2-phenylenediamine and 2-methylpentamethylenediamine.
Claim 19
Dependent Claim
23 words
The polyurethaneurea of claim 10 wherein said reaction further includes a reagent selected from the group consisting of water and a silicone glycol.
Claim 20
Dependent Claim
10 words
The polyurethaneurea of claim 10 further including a radiopaque material.
Claim 21
Dependent Claim
21 words
A melt processable polyurethaneurea comprising the product from the reaction of a polyisocyanate, macroglycol, diol chain extender and diamine chain extender.
Claim 22
Dependent Claim
21 words
A melt processable polyurethaneurea comprising the product from the reaction of a polyisocyanate, macroglycol, diol chain extender and diamine chain extender.
Claim 23
Dependent Claim
28 words
The polyurethaneurea of claim 17 wherein said macroglycol is selected from the group consisting of a silicone glycol, a polyester glycol, a polylactone glycol and a polyether glycol.
Claim 24
Dependent Claim
26 words
A melt processable polyurethaneurea comprising a product from the reaction of 4,4'-diphenylmethane diisocyanate, polytetramethyleneoxide having a molecular weight of about 500 to 3,000, butanediol and 2-methylpentamethylenediamine.
Claim 25
Dependent Claim
26 words
A melt processable polyurethaneurea comprising a product from the reaction of 4,4'-diphenylmethane diisocyanate, polytetramethyleneoxide having a molecular weight of about 500 to 3,000, butanediol and 2-methylpentamethylenediamine.
Claim 26
Dependent Claim
9 words
The polyurethaneurea of claim 19 further comprising barium sulfate.
References Cited (Backward Citations)
US3642064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |