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    Article, including tires, having component or rubber composition which contains particles of pre-vulcanized rubber and blend of tetrathiodipropionic and trithiodipropionic acids
    6.
    发明授权
    Article, including tires, having component or rubber composition which contains particles of pre-vulcanized rubber and blend of tetrathiodipropionic and trithiodipropionic acids 失效
    包含轮胎的制品，其具有包含预硫化橡胶颗粒的组分或橡胶组合物，以及四硫代二丙酸和三硫代丙酸的混合物

    公开(公告)号：US06797757B2

    公开(公告)日：2004-09-28

    申请号：US10141306

    申请日：2002-05-08

    申请人： Lawson Gibson Wideman ,  George Frank Balogh

    发明人： Lawson Gibson Wideman ,  George Frank Balogh

    IPC分类号： C08K536

    CPC分类号： B60C1/00 ,  B60C1/0016 ,  C08K5/372 ,  C08L21/00

    摘要： The invention relates to articles of manufacture, such as for example, tires and industrial products, which have at least one component comprised of a rubber composition which contains particles of pre-sulfur vulcanized rubber (e.g. ground recycled rubber) and impure tetrathiodipropionic acid, namely a blend comprised primarily of tetrathiodipropionic acid and trithiodipropionic acids of a weight ratio thereof in a range of about 80/20 to about 30/70. Said blend is referred to herein as an S4/S3 blend. The S4/S3 blend may be introduced directly to a rubber composition or may be provided as particles of a composite of said S4/S3 and a particulate support therefor for a purpose of aiding the dispersion of the S4 and S3 within the elastomer host. Representative of such support, or carrier, may be, for example, silica, particularly amorphous precipitated silica, carbon black, clay, starch, calcium carbonate, calcium silicate, titanium dioxide and the like, wherein carbon black is preferred. It is considered herein that an advantageous nature of the invention is to provide such an S4/S3 blend, for example, in a manner to somewhat depress the melting point of the trithiodipropionic acid and therefore promote its processability and incorporation with particles of pre-vulcanized rubber without substantially degrading any beneficial effect thereof. Thus, the invention is intended to be exclusive of use of 100 percent pure tetrathiodipropionic acid and exclusive of relatively high purity trithiodipropionic acid which contains at least 80 percent trithiodipropionic acid.

    摘要翻译： 本发明涉及制品，例如轮胎和工业产品，其具有至少一种组分，该组分由含有预硫硫化橡胶颗粒（例如研磨回收的橡胶）和不纯的四硫代二丙酸的橡胶组合物组成，即， 主要由四硫代二丙酸和三硫代丙酸组成的共混物，其重量比在约80/20至约30/70的范围内。 所述共混物在本文中称为S4 / S3共混物。 可以将S4 / S3共混物直接引入橡胶组合物中，或者可以作为所述S4 / S3和其颗粒载体的复合材料颗粒提供，用于帮助弹性体主体中的S4和S3的分散。 这种载体或载体的代表可以是例如二氧化硅，特别是无定形沉淀二氧化硅，炭黑，粘土，淀粉，碳酸钙，硅酸钙，二氧化钛等，其中优选碳黑。 在本文中认为，本发明的有利性质是提供这种S4 / S3共混物，例如以稍微降低三硫代丙酸的熔点的方式，从而促进其加工性并与预硫化的颗粒结合 橡胶，其基本上不会降低其任何有益效果。 因此，本发明旨在不包括使用100％纯的四硫代二丙酸，并且不包含含有至少80％的三硫代丙酸的相对高纯度的三硫代二丙酸。