Patent EP0089780A2 successfully refreshed from Google Patents.
EP0089780A2
Expired / Lapsed
EP
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A polyurethane elastomer and an improved hypoallergenic polyurethane flexible glove prepared therefrom
Assignee: Deseret Medical Inc
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Filing: 1983-03-09
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Granted: —
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Expires: 2003-03-09
Abstract
Abstract A soft, low modulus, non-crystalline segmented polyurethane characterised by a 100% modulus less than about 250 psi, initial tensile set less than about 30% and tensile strength of about 3500 to 6500 psi obtained by balancing the percent hard segment and the degree of cross-linking within the ranges 14 to 25% hard segment and 5,000 to 30,000 molecular weight per cross-link in a segmented polyurethane; and a flexible glove for use by surgeons and others which is easily donned and comfortable on the hand, wherein the glove forming material consists essentially of the aforesaid polyurethane.
Inventors
- 👤 Charles Wesley Mcgary, Jr.
- 👤 Vincent Joseph Pascarella
- 👤 Delmer Richard Rhodes
- 👤 Robert Arthur Taller
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 17:45
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/02; B29C41/22; A; A61; A61B; A61B42/00; B29C41/08; B29C41/10; B29C41/14; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/2805; C08G18/40; C08G18/42; C08G18/4202; C08G18/61; C08G18/65; C08G18/66; C08G18/6603; C08G18/6607; C08G18/6611; C08G18/70; C08G18/72; C08G18/74; C08G18/75; C08G18/758
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
57 words
A flexible glove suitable for use by surgeons and others, which is easily donned and comfortable on the hand, wherein the glove is fomed of a material which comprises a polyurethane having a 100% modulus less than approximately 250 psi, initial tensile set less than approximately 30% and tensile strength of approximately from 3500 to 6500 psi.
Claim 2
Dependent Claim
57 words
A flexible glove suitable for use by surgeons and others, which is easily donned and comfortable on the hand, wherein the glove is fomed of a material which comprises a polyurethane having a 100% modulus less than approximately 250 psi, initial tensile set less than approximately 30% and tensile strength of approximately from 3500 to 6500 psi.
Claim 3
Dependent Claim
43 words
A glove according to Claim 1, wherein the polyurethane is a segmented polyurethane in which the percentage of hard segment is in the range of approximately from 14 to 25% and the degree of cross-linking is approximately 5000 to 30,00 M c .
Claim 4
Dependent Claim
38 words
A glove according to Claim 1 or 2, wherein the polyurethane is the reaction product of an aromatic or alicyclic diisocyanate, a short chain diol extender, a 500-5000 molecular weight long chain diol, and a polyhydroxy cross-linking agent.
Claim 5
Dependent Claim
42 words
A glove according to Claim 1, 2 or 3, wherein the glove has an outside surface and an inside surface, the inside surface being intended to be worn against the skin, and wherein the inside surface has embedded therein a solid lubricant.
Claim 6
Dependent Claim
82 words
A polyurethane elastomer having a 100% modulus of less than approximately 250 psi, a tensile of approximately 3500 to 6500 psi, and an initial tensile set of less than approximately 30%, wherein the polyurethane comprises approximately 14 to 25% hard segment, is chemically cross-linked to provide approximately 5,000 to 30,000 M c , and is derived from an aromatic or alicyclic polyisocyanate and an approximately 500 to 5000 average molecular weight long chain diol that is cross-linked with a polyhydroxy cross-linking agent.
Claim 7
Dependent Claim
82 words
A polyurethane elastomer having a 100% modulus of less than approximately 250 psi, a tensile of approximately 3500 to 6500 psi, and an initial tensile set of less than approximately 30%, wherein the polyurethane comprises approximately 14 to 25% hard segment, is chemically cross-linked to provide approximately 5,000 to 30,000 M c , and is derived from an aromatic or alicyclic polyisocyanate and an approximately 500 to 5000 average molecular weight long chain diol that is cross-linked with a polyhydroxy cross-linking agent.
Claim 8
Dependent Claim
16 words
A polyurethane according to Claim 5, wherein the polyurethane contains about from 13 to 23% polyisocyanate.
Claim 9
Dependent Claim
26 words
A polyurethane according to Claim 5 or 6, wherein the polyisocyanate is selected from 4,4'-diphenyl methane diisocyanate, toluene diisocyanate, isophorone diisocyanate and methylene bis (4-cyclohexyl isocyanate).
Claim 10
Dependent Claim
23 words
A polyurethane according to Claim 5, 6 or 7, wherein the polyurethane provides a Shore A hardness of about from 45 to 60.
Claim 11
Dependent Claim
26 words
A polyurethane according to any one of Claims 5 to 8, wherein the polyurethane contains about from 0.5 to 3.0% of a short chain diol extender.
Claim 12
Dependent Claim
22 words
A polyurethane according to Claim 9, wherein the short chain diol is a straight chain diol containing up to six carbon atoms.
Claim 13
Dependent Claim
40 words
A glove according to Claim 3 or to Claim 4 when appendant to Claim 3, or a polyurethane according to any one of Claims 5 to 10, wherein the long chain diol comprises a polyester diol or a blend thereof.
Claim 14
Dependent Claim
28 words
A glove according to Claim 11, or a polyurethane according to Claim 11, wherein the polyester diol is a poly(ethylene adipate) diol, polycaprolactone glycol, or a blend thereof.
Claim 15
Dependent Claim
28 words
A polyurethane as claimed in any one of Claims 5 to 11 and 12, wherein the polyurethane possesses a 300% modulus of about from 200 to 450 psi.
Claim 16
Dependent Claim
40 words
A glove according to any one of Claims 1 to 4, 11 and 12, or a polyurethane according to any one of Claims 5 to 13, wherein the polyurethane has a modulus profile below the curve (A) in the Figure.
Claim 17
Dependent Claim
43 words
A glove according to any one of Claims 1 to 4, 11, 12 and 14, or a polyurethane according to any one of Claims 5 to 14, wherein the polyurethane has tear greater than approximately 100 ppi, and elongation greater than approximately 600%.
Claim 18
Dependent Claim
46 words
A glove according to any one of Claims 1 to 4, 11, 12, 14 and 15, or a polyurethane according to any one of Claims 5 to 13, wherein the polyurethane is essentially non-crystalline and non-crystallizable at a temperature of 5°C for at least four months.
Claim 19
Dependent Claim
14 words
A film of a polyurethane according to any one of Claims 5 to 16.
References Cited (Backward Citations)
No citation records indexed.
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