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    Processes for improving the processing characteristics of vulcanized elastomers
    2.
    发明授权
    Processes for improving the processing characteristics of vulcanized elastomers 失效
    改善硫化弹性体加工特性的方法

    公开(公告)号：US3923724A

    公开(公告)日：1975-12-02

    申请号：US47003274

    申请日：1974-05-15

    Applicant: DEGUSSA

    Inventor： WESTLINNING HERMANN ,  WOLFF SIEGFRIED ,  SCHWARZE WERNER

    IPC: C08K5/378 ,  C08K3/04 ,  C08K3/20 ,  C08K5/01 ,  C08K5/34

    CPC classification number: C08K5/378 ,  C08K3/013 ,  C08K3/06 ,  C08K5/36 ,  C08L21/00

    Abstract: ing a vulcanized elastomeric composition which includes a filler and has improved processing characteristics which process comprises vulcanizing a vulcanizable composition containing, (a) at least one halogen-free elastomer of the group consisting of natural rubber, polyisoprenes, polybutadienes, copolymers of butadiene and styrene, copolymers of butadiene and acrylonitrile, copolymers of isoprene and isobutene, copolymers of butadiene and isobutene, terpolymers of ethylene, propylene and dienes, mixtures of the said elastomers with each other, and oil-extended elastomers of the said elastomers, (b) at least one reinforcing filler, (c) sulfur, and (d) at least one vulcanizing agent consisting of a substituted sym-triazinyl disulfide having the formula

    in which formula R1, R2, R3 and R4 are each a radical of the group consisting of hydrogen, phenyl, alkyl radicals containing up to 18 carbon atoms, alkenyl radicals containing up to 6 carbon atoms, cycloalkyl radicals containing at least 5 and at most 7 carbon atoms, aralkyl radicals containing at least 7 and at most 9 carbon atoms, and the said alkyl, alkenyl, cycloalkyl, phenyl and alkyl radicals that are further substituted with a radical of the group consisting of hydroxyl, cyano and alkoxy radicals containing up to 18 carbon atoms, and X is a radical of the group consisting of

    in which formulae R1, R2, R3 and R4 each have the same significance as hereinbefore and R5 is a radical of the group consisting of phenyl, benzothiazolyl, carbazolyl, phenothiazinyl, alkyl radicals containing up to 18 carbon atoms, and aralkyl radicals containing at least 7 and at most 9 carbon atoms, or a mixture of one or more of the said substituted sym-triazinyl disulfides in an amount between 0.1 and 50 millimols per 100 grams of the elastomer.

    Abstract translation: 制备硫化弹性体组合物的方法，其包括填料并且具有改进的加工特性，该方法包括硫化可硫化组合物，所述可硫化组合物包含：（a）至少一种由天然橡胶，聚异戊二烯，聚丁二烯，丁二烯共聚物组成的组的无卤素弹性体 苯乙烯，丁二烯和丙烯腈的共聚物，异戊二烯和异丁烯的共聚物，丁二烯和异丁烯的共聚物，乙烯，丙烯和二烯的三元共聚物，所述弹性体彼此的混合物和所述弹性体的油扩展的弹性体（ b）增强填料，（c）硫，和（d）sym-三嗪基二硫化物硫化剂。

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