Process for the production of pourable elastomer particles
    4.
    发明授权
    Process for the production of pourable elastomer particles 失效
    生产可溶性弹性体颗粒的方法

    公开(公告)号:US3846365A

    公开(公告)日:1974-11-05

    申请号:US27000372

    申请日:1972-07-10

    摘要: Discrete, finely divided, tack-free elastomer particles are prepared from a filler-containing aqueous elastomer emulsion containing an aqueous emulsion of an elastomer dissolved in a volatile inert organic solvent having an emulsifying amount of a quaternary ammonium salt cationic surfactant and an aqueous suspension or dispersion of a solid, finely divided elastomer filler, which process comprises gradually introducing the fillercontaining aqueous elastomer emulsion into an aqueous alkali silicate solution while maintaining said solution at a pH greater than 2 and simultaneously evaporating the organic solvent to form discrete, finely divided, tack-free elastomer particles. The process can be applied to solid elastomers or to post-polymerization elastomer solutions, and is particularly suitable for preparing pourable, carbon black containing elastomer particles to be formed into shaped objects.

    摘要翻译: 由含填料​​的水性弹性体乳液制备分散的,细分的,无粘性的弹性体颗粒,该含水弹性体乳液含有溶解在具有乳化量的季铵盐阳离子表面活性剂和水悬浮液的挥发性惰性有机溶剂中的弹性体的水性乳液,或 固体,细分散的弹性体填料的分散体,该方法包括将含填料的水性弹性体乳液逐渐引入含水碱性硅酸盐溶液中,同时将所述溶液保持在大于2的pH,同时蒸发有机溶剂以形成离散的,细分的 ,无粘性弹性体颗粒。

    Tread strips for tires formed of homopolymers of butadiene
    5.
    发明授权
    Tread strips for tires formed of homopolymers of butadiene 失效
    二苯乙烯共聚物轮胎的条纹

    公开(公告)号:US3741927A

    公开(公告)日:1973-06-26

    申请号:US3741927D

    申请日:1970-11-24

    摘要: TIRE TREAD STRIPS FOR AUTOMOBILE TIRES HAVING A GOOD COMBINATION OF WEAR AND SKID RESISTANCE ARE FORMED OF A POLYBUTADIENE HOMOPOLYMER COMPOSITION CONSISTING ESSENTIALLY OF: (A) A HOMOPOLYMER OF 1,3-BUTADIENE HAVING AN AVERAGE VINYL GROUP CONTENT OF 25-50%, A CIS-1,4-DOUBLE BOND CONTENT OF 10-40%, A TRANS-1,4-DOUBLE BOND CONTENT OF 15-55%, A MOONEY VISCOSITY (ML-4) OF BETWEEN 40 AND 120, AND A DEFORMATION-ELASTICITY OF AT LEAST 25, WHOSE VINYL GROUPS ARE DISTRIBUTED ALONG THE LONGITUDINAL AXIS OF THE MACROMOLECULE TOWARD AN END THEREOF IN A SUBSTANTIALLY DECREASING MANNER, (B) 5-100 PARTS BY WEIGHT OF A PLASTICIZER, BASED ON 100 PARTS BY WEIGHT OF POLYBUTADIENE, AND (C) 30-120 PARTS BY WEIGHT OF A CARBON BLACK, BASED ON 100 PARTS BY WEIGHT OF POLYBUTADIENE.