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Vulcanizable composition containing hxnbr latex and polyfunctional epoxide

A technology of epoxide and composition, applied in the direction of rubber derivative coatings, clothing, applications, etc., can solve the problems of unsatisfactory end use, toxicity, insufficient thermal stability, etc. of cross-linkable dip-molded latex composition

Active Publication Date: 2019-11-22
ARLANXEO DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The prior art shows that the use of hitherto known cross-linking agents is detrimental to the product properties of the dipped molded articles produced, i.e. these cross-linking agents trigger allergic reactions, are of environmental concern, are toxic, have insufficient thermal stability or produce insufficient Products with high maximum elongation or tensile strength
[0012] Thus, known crosslinkable dip molding latex compositions remain unsatisfactory for specific end uses

Method used

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  • Vulcanizable composition containing hxnbr latex and polyfunctional epoxide
  • Vulcanizable composition containing hxnbr latex and polyfunctional epoxide
  • Vulcanizable composition containing hxnbr latex and polyfunctional epoxide

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example

[0172] materials used

[0173] Latex (a)

[0174] XT-Latex Hydrogenated carboxylated secondary NBR latex; pH = 8.7; 40% by weight solids; 33% by weight acrylonitrile; 5% by weight methacrylic acid; commercially available from Arlanxeo Corporation

[0175] Crosslinking agent (b)

[0176] Multifunctional epoxy EUDERM Fix GA-I (bisphenol A-epichlorohydrin epoxy resin with average molecular weight <700); commercially available from LANXESS

[0177] Resorcinol Available from VWR Chemicals, 99.1%

[0178] Formaldehyde available from VWR Chemicals, 36%

[0179] Sulfur 50% colloidal sulfur dispersion, commercially available from agrostulln GmbH

[0180] Auxiliary

[0181] ZDBC Cure Accelerator; Zinc Dibutyl Dithiocarbamate

[0182] Bulk; available from Aquaspersions, 50% off

[0183] ZnO Zinc oxide; available from Aquaspersions, 50%

[0184] coagulation solution

[0185] Ca(NO 3 ) 2 *4H 2 O Calcium nitrate tetrahydrate; available from VWR

[0186] Triton X-100 s...

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Abstract

The present invention relates to vulcanizable compositions containing HXNBR latex and polyfunctional epoxide, to methods for the vulcanization of vulcanizable compositions, and to moldings of HXNBR vulcanisates.

Description

technical field [0001] The present invention relates to curable compositions comprising HXNBR latex and multifunctional epoxides, methods for curing the curable compositions, and molded articles composed of HXNBR cured products. Background technique [0002] Rubber gloves are widely used and have various uses in domestic households and industries, for example, in the food industry, electronic industry, or medical field. Rubber gloves generally must (1) have a comfortable fit, (2) be resistant to tearing, ie have high tensile strength, and (3) be dimensionally stable over extended periods of time. In addition, however, in the case of specific applications, rubber gloves must also be resistant to high temperatures and to chemicals. [0003] A suitable material for the production of rubber gloves is hydrogenated carboxylated nitrile rubber latex (HXNBR). HXNBR is preferred over XNBR because of its excellent mechanical values ​​at high temperatures, relatively high thermal sta...

Claims

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Application Information

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IPC IPC(8): A41D19/00C08L15/00
CPCC08L15/00C08L63/04C08L2312/00C09D115/00
Inventor 苏珊娜·利贝尔卡罗拉·施奈德斯
Owner ARLANXEO DEUT GMBH
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