A process for improving the adhesion of rubber mixtures to textile fabrics

    公开(公告)号:GB1131695A

    公开(公告)日:1968-10-23

    申请号:GB1943467

    申请日:1967-04-27

    Applicant: DEGUSSA

    Abstract: 1,131,695. Rubber textile laminates. DEUTSCHE GOLDUND SILBERSCHEIDEANSTALT. 27 April, 1967 [6 July, 1966], No. 19434/67. Heading B5N. [Also in Division C3] To improve the adhesion of natural or synthetic rubber to textile fabrics, resin-forming components comprising an aldehyde or aldehyde donor and a phenol or amine are intimately mixed with a filler comprising extremely finely divided active silica and/or aluminium silicate and/or calcium silicate and/or calcium carbonate by grinding or adsorptively by applying the resin-forming components in solution in a solvent, working the resultant mixture into a rubber sheet and vulcanizing the thus prepared rubber sheet on to a textile fabric. The resinforming components are preferably resorcinol and hexamethylene tetramine, the weight ratio of resin-forming components to fillers being from 1: 5 to 5:1. Resorcinol may be ground with the filler, preferably silica, on a mill and the resulting master batch worked into a rubber mixture containing the hexamethylene tetramine. Alternatively resorcinol is applied in solution to the finely divided fillers and the resulting product is worked into the rubber mixture. The hexamethylene tetramine is either ground with the filler or applied by adsorption in the form of an aqueous solution, and the resulting product is worked into rubber with the master batch of resorcinol and silica.

    VULCANIZABLE RUBBER MIXTURES FOR TIRE TREADS

    公开(公告)号:CA1049171A

    公开(公告)日:1979-02-20

    申请号:CA211285

    申请日:1974-10-11

    Applicant: DEGUSSA

    Abstract: The present invention provides a vulcanizable rubber mixture for tire treads which is based on rubbers capable of being cross-linked, silica filler, processing oil, sulphur-con-taining organosilanes and accelerator, said mixture comprising one or two polybutadiene rubbers in amounts of 20 to 100% by weight of the proportion of elastomer, one or two rubbers other than polybutadiene selected from synthetic rubbers and natural rubbers in amounts of 80 to 0% by weight of the proportion of elastomer in the rubber mixture, active silica filler in amounts of more than 80 parts by weight per 100 parts by weight of rubber, processing oil in amounts of 40 to 100 parts by weight per 100 parts of rubber, at least one bis-¢-alkoxy silyl alkyl!oligosulphide in amounts of 0.1 to 25% by weight per 100 parts by weight of rubber, sulphur in amounts totalling approximately 0.2 to 8 parts by weight per 100 g of rubber and at least one vulcanization accelerator in amounts of approximately 0.1 to 8 parts by weight per 100 parts by weight of rubber The present invention also includes a tire tread formed from said mixture.

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