US4499154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dipped rubber article
Assignee: LRC Products Ltd
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Filing: 1982-11-30
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Granted: 1985-02-12
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Expires: 2002-11-30
Abstract
Abstract A skin-contacting coating of a lubricating hydrogel polymer bonded to a rubber article (such as a surgeon's glove) is treated by means of surfactant material (such as a bactericidal cationic surfactant which preferably has an N-hexadecyl group) or a long chain fatty amine so as to substantially improve the lubricity of the coating with respect to damp skin. The hydrogel polymer is preferably a copolymer of 2-hydroxyethylmethacrylate (HEMA) with methacrylic acid (MAA) or with 2-ethylhexyl acrylate (EHA) or with both MAA and EHA. The copolymer contains HEMA and MAA is a molar ratio of 1 to 10:1 of HEMA and EHA in a molar ratio of 2.5 to 10:1. Such a hydrogel polymer has improved lubricity to dry skin and, if used for this purpose, need not be treated with a surfactant or fatty amine to improve the lubricity with respect to damp skin.
Inventors
- 👤 Michael H. James
- 👤 David M. Bratby
- 👤 Roger Duck
- 👤 Howard I. Podell
- 👤 Albert Goldstein
- 👤 David C. Blackley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:30
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/02; B29C41/14; A; A61; A61B; A61B42/00; A61B42/10; C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0075; B29K; B29K2021/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1352; Y10T428/1386; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696; Y10T428/31826; Y10T428/31833; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T428/31931
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
68 words
A flexible rubber article which has a coating comprising a lubricating hydrogel polymer bonded thereto to provide a surface of said article said surface coming in contact with the user's skin, wherein a member of the group consisting of surfactant materials and long chain fatty amines has been applied to said surface so as to substantially improve the donning lubricity of said surface with respect to damp skin.
Claim 2
Dependent Claim
68 words
A flexible rubber article which has a coating comprising a lubricating hydrogel polymer bonded thereto to provide a surface of said article said surface coming in contact with the user's skin, wherein a member of the group consisting of surfactant materials and long chain fatty amines has been applied to said surface so as to substantially improve the donning lubricity of said surface with respect to damp skin.
Claim 3
Dependent Claim
15 words
An article according to claim 1, in which the surfactant material comprises an ionic surfactant.
Claim 4
Dependent Claim
12 words
An article according to claim 2, in which said surfactant is cationic.
Claim 5
Dependent Claim
13 words
An article according to claim 1, in which said surfactant material is bactericidal.
Claim 6
Dependent Claim
14 words
An article according to claim 3, in which said surfactant has an N-hexadecyl group.
Claim 7
Dependent Claim
15 words
An article according to claim 5, in which said surfactant is hexadecyl trimethyl ammonium chloride.
Claim 8
Dependent Claim
14 words
An article according to claim 5, in which said surfactant is N-cetyl pyridinium chloride.
Claim 9
Dependent Claim
160 words
A process for producing an article according to claim 1, which comprises the steps of: (a) forming a flexible rubber article by dipping a form in a rubber latex, (b) leaching the rubber article in hot water; (c) priming the rubber surface of the article on the former by means of a dilute acid, (d) rinsing the primed surface in water or aqueous alkali, (e) dipping said rubber article, while still on the former, in a solution of a hydrophilic, hydrogel-forming polymer and a curing agent therefor, (f) heat drying the resulting coating such that the resulting hydrogel polymer is bonded to said rubber, (g) vulcanizing the rubber and simultaneously curing the polymer by the application of heat, (h) stripping the resulting article from the former, (i) applying a solution of surfactant material containing silicone to said coating of hydrogel polymer, and (j) heating the resulting coating of surfactant material so as to fix the slip properties of the coating.
Claim 10
Dependent Claim
13 words
An article according to claim 1, wherein said article is a surgeon's glove.
References Cited (Backward Citations)
US2621333A
Cited
US3411892A
Cited
FR1434453A
Cited
FR1453817A
Cited
US3745042A
Cited
US3728739A
Cited
FR2193710A1
Cited
US3856561A
Cited
US3959554A
Cited
US3813695A
Cited
US3872515A
Cited
US3919442A
Cited
FR2297910A1
Cited
US4082862A
Cited
US4143109A
Cited
US4064564A
Cited
US4100309A
Cited
US4302852A
Cited
US4304008A
Cited
US4310928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |