IMPROVED THERMOPLASTIC VULCANIZATES AND PROCESSES FOR MAKING THE SAME
    2.
    发明授权
    IMPROVED THERMOPLASTIC VULCANIZATES AND PROCESSES FOR MAKING THE SAME 有权
    改进的热塑性硫化橡胶及其制造方法

    公开(公告)号:EP1664189B1

    公开(公告)日:2009-11-18

    申请号:EP04788821.9

    申请日:2004-09-17

    摘要: A process for producing thermoplastic vulcanizates, the process comprising (i) dynamically vulcanizing a rubber with a curative in a first stage, where the rubber is within a blend that includes the rubber, a thermoplastic resin, and the curative, where said step of dynamically vulcanizing occurs at a temperature at or above the melting point of the thermoplastic resin, where said step of dynamically vulcanizing employs a peroxide curative, and where said rubber includes polymeric units deriving from 5-vinyl-2-norbornene, (ii) continuing said step of dynamically vulcanizing to cause phase inversion of the blend to thereby convert the thermoplastic resin into a continuous phase, (iii) maintaining the blend at or above the melting point of the thermoplastic resin after the phase inversion, and (iv) introducing molten thermoplastic resin into the blend in a second stage, where said step of introducing molten thermoplastic resin occurs after phase inversion but before the blend is cooled to a temperature below the melting point of the thermoplastic resin.