Readily donned, powder-free elastomeric article

Inactive Publication Date: 2005-02-10
KIMBERLY-CLARK WORLDWIDE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009] The present invention provides an elastomeric, powder-free article having excellent donning characteristics. The article is preferably made using a substrate of synthetic elastomer that exhibits good elasticity and strength, is hypoallergenic, is resistant to environmental degradation, is producible by dip forming, and is otherwise acceptable for use. These properties are not adversely affected by the treatment and structure that provide improve

Problems solved by technology

However, some persons are allergic to natural rubber latex, and in addition natural rubber latex is susceptible to environmental damage such as ozonation.
For many years, the only available alternatives to natural rubber latex were synthetic elastomers which did not produce allergic reactions, but which also tended to exhibit insufficient elasticity and strength, as well as susceptibility to ozone degradation in some cases.
Tightly fitting elastomeric articles such as gloves and condoms, whether made of natural or synthetic elastomers, can be difficult to don.
The use of a powdered lubricant on the elastomer is operable, but has drawbacks in specific

Method used

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  • Readily donned, powder-free elastomeric article
  • Readily donned, powder-free elastomeric article
  • Readily donned, powder-free elastomeric article

Examples

Experimental program
Comparison scheme
Effect test

Example

EXAMPLE 1

[0037] A Glove was dip formed from S-EB-S block copolymer, as described above. While still on the former but after drying, the glove was dipped into a 4 percent by weight solution of VectorR 511 S-I-S block copolymer in toluene. The S-I-S solution on the glove was air dried to remove the solvent. The glove was dipped into a solution of 4905 grams of water, 70 grams of sodium hypochlorite (14 percent by weight in water), and sufficient hydrochloric acid to produce a solution having a pH of 2, for a period of about 15 minutes, and dried. The glove was then stripped from the former. It showed good dry donning characteristics without the use of any powder.

Example

EXAMPLE 2

[0038] Example 1 was repeated, except that the chlorinating solution contained 4050 grams of water, 700 grams of sodium hypochlorite, and 250. grams of hydrochloric acid, and the immersion time was 1 minute. After drying and removing from the form, the glove showed good dry donning characteristics without the use of any powder.

Example

EXAMPLE 3

[0039] Example 1 was repeated for a batch of 20 gloves, for the dip forming and S-I-S coating steps (but not for the chlorinating step, which was accomplished by a different approach as described subsequently). Before stripping the gloves from their forms, dry cornstarch powder was applied. The powdered gloves were loaded into a washing machine with 11.4 grams of Surfynol TGR mixed into 38 liters of water. The gloves were run in the washing machine for 15 minutes at low agitation and removed from the washer. The washer was then filled with a solution of 38 liters of clean water, 1994 grams of 7 percent chlorox bleach (2300 ppm chlorine), and 460 milliliters of 6N sulfuric acid, the solution having a pH of 2.2 at 18.9° C. The wet gloves were added with the S-I-S coating on the outside of the gloves and agitated for 15 minutes. The measured pH of the solution rose to 2.41 in 5 minutes, 2.64 after 10 minutes, and 2.68 after 15 minutes. After 15 minutes, the solution was neutr...

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Abstract

An elastomeric article such as a glove includes a substrate body made of an styrene-ethylene-butylene-styrene block copolymer, and a donning layer overlying at least one side of the substrate body. The donning layer is formed of 1,2 polybutadiene, preferably syndiotactic 1,2 polybutadiene, or a chlorinated mid block unsaturated block copolymer. Optionally, a surfactant layer is present over the donning layer to further improve the donning characteristics. The surfactant layer is preferably an alkyl dimethylbenzyl quaternary, an alkyl trimethyl quaternary, a dialkyl dimethyl quaternary, sodium lauryl sulfate, or pyridinium chloride.

Description

[0001] This application is a continuation in part of pending and allowed application Ser. No. 08 / 604,009, filed Feb. 20, 1996, now U.S. Pat. No. ______, for which priority is claimed.BACKGROUND OF THE INVENTION [0002] This invention relates to elastomeric articles such as gloves, and, more particularly, to such elastomeric articles specially treated to make them easy to slip on. [0003] Highly elastic articles such as surgical and examination gloves have traditionally been made of natural rubber latex in order to utilize its combination of good elasticity and strength. However, some persons are allergic to natural rubber latex, and in addition natural rubber latex is susceptible to environmental damage such as ozonation. For many years, the only available alternatives to natural rubber latex were synthetic elastomers which did not produce allergic reactions, but which also tended to exhibit insufficient elasticity and strength, as well as susceptibility to ozone degradation in some c...

Claims

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Application Information

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IPC IPC(8): A41D19/00A61B19/04A61L31/04A61L31/10
CPCA41D19/0058A61B19/04A61L31/048A61L31/10Y10T428/1352C08L53/02C08L23/08A61B42/00
Inventor LITTLETON, KERMIT R.GLORIANI, RONALDBROWN, GARTHBAKER, JASONNGUYEN, K CWILLIAMS, JALI LAMAR
Owner KIMBERLY-CLARK WORLDWIDE INC
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