中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

13 records (took 0.022 seconds)

    COMPOSICIONES ELASTOMERICAS PARA VULCANIZACION Y SU PROCESO DE OBTENCION
    7.
    发明专利
    COMPOSICIONES ELASTOMERICAS PARA VULCANIZACION Y SU PROCESO DE OBTENCION 未知

    公开(公告)号：CO4990988A1

    公开(公告)日：2000-12-26

    申请号：CO97023504

    申请日：1997-05-02

    Applicant: CABOT CORP

    Inventor： BROWN TREVOR ALAN ,  WANG MENG-JIAO ,  DICKINSON RALPH E

    IPC: C08J3/22 ,  C08J3/24 ,  C08K9/06

    Abstract: Un proceso multietapa para producir una composición elastómeraprocesable sustancialmente no vulcanizada comprende: en una etapa previa no productiva del proceso multietapa, dispensar sustancialmente una carga de partículas de negro de humo modificado y un agente reticulado de azufre en un elastómero de hidrocarburo reticulable de azufre para producir una tanda maestra de un elastómero sustancialmente no vulcanizado procesable, el agente de reticulación de azufre comprende azufre o un donador de azufre efectivo para reticular el elastómero de hidrocarburo.

    Elastomer compositions and methods.
    8.
    发明专利
    Elastomer compositions and methods. 未知

    公开(公告)号：ZA973816B

    公开(公告)日：1997-12-01

    申请号：ZA973816

    申请日：1997-05-02

    Applicant: CABOT CORP

    Inventor： BROWN TREVOR ALAN ,  WANG MENG-JIAO ,  DICKINSON RALPH E

    IPC: C08J3/22 ,  C08K9/06 ,  C08J ,  B60C

    Abstract: Novel elastomeric compositions are disclosed, incorporating silicon-treated carbon black and pre-vulcanization modifier selected from non-silane polysulfidic organo-compounds. The silicon-treated carbon black particulate filler differs chemically and in its performance characteristics from simple mixtures of silica and carbon black fillers. The pre-vulcanization modifier is effective to substantially increase bound rubber content in the product of a non-productive thermomechanical working of a base composition incorporating the silicon-treated carbon black particulate filler and SBR or other such unsaturated elastomer. The thermal working takes place at a maximum temperature sufficient to vulcanize the unsaturated elastomer if it were in the presence of a suitable vulcanization system. The non-vulcanized rubber masterbatch produced by such thermal working, having substantially increased bound rubber content, can be admixed with a vulcanization system in a thermomechanical finishing step carried out at a maximum temperature less than the vulcanization temperature. The resulting composition can be vulcanized by thermomechanical working at or above the vulcanization temperature. The resulting elastomeric compositions in accordance with preferred embodiments are found to have improved performance characteristics, including hysterisis balance of low temperature traction and high temperature rolling resistance.

Patent Agency Ranking