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    • 49. 发明授权
    • Accelerator-free thin-walled rubber vulcanizates from latex
    • 不含促凝剂的薄膜橡胶硫化橡胶
    • US07374711B2
    • 2008-05-20
    • US10269840
    • 2002-10-10
    • Mark W. McGlothlinEric SchmidBrian P. Watschke
    • Mark W. McGlothlinEric SchmidBrian P. Watschke
    • B29C41/14B29C35/00
    • C08J5/02A61B42/00B29C41/14B29K2021/00B29K2105/0064B29K2105/24C08J2307/02Y10T428/1386
    • Thin-walled rubber articles for use contact with living tissue or with materials to be delivered to living tissue are prepared from aqueous latex of either natural rubber or synthetic cis-1,4-polyisoprene by vulcanization to produce both carbon-carbon and carbon-(sulfur)n-carbon crosslinks, the vulcanization being performed in the absence of any compounding components that contain secondary amine groups or any components that have a tendency to produce nitrosamines. While sulfur activators may be included, it is preferable that no sulfur accelerators at all be included. Thin-walled rubber articles formed from the latex surprisingly exhibit a combination of high tensile strength, high ultimate percent elongation, and low 500% tensile modulus. The process is particularly effective in the manufacture of thin-walled articles from synthetic cis-1,4-polyisoprene.
    • 通过硫化从天然橡胶或合成顺式-1,4-聚异戊二烯的水性胶乳制备用于与生物组织或与待传送到生物体组织的材料接触的薄壁橡胶制品以产生碳 - 碳和碳 - ( 硫)碳交联时,硫化在不存在任何含有仲胺基团或具有产生亚硝胺的倾向的组分的混合组分的情况下进行。 虽然可以包括硫活化剂,但优选不包括硫促进剂。 由胶乳形成的薄壁橡胶制品令人惊奇地表现出高拉伸强度,高极限伸长率和低500%拉伸模量的组合。 该方法在由合成顺式-1,4-聚异戊二烯制造薄壁制品方面特别有效。