Diaryl-p-phenylenediamine stabilizers for peroxide-cured polyethylene
    2.
    发明授权
    Diaryl-p-phenylenediamine stabilizers for peroxide-cured polyethylene 失效
    用于过氧化固化的聚乙烯的二元 - 对 - 苯乙烯稳定剂

    公开(公告)号:US3627728A

    公开(公告)日:1971-12-14

    申请号:US3627728D

    申请日:1968-12-04

    Applicant: DU PONT

    CPC classification number: C08K5/14 C08K5/18 C08L23/04

    Abstract: In a process for producing cross-linked polyethylene by (1) mixing polyethylene with 1 to 10 parts of a tertiary organic peroxide and (2) heating the mixture to effect cross-linking, the improvement of adding to the mixture before the cross-linking step about from 0.25 to 2 parts of a stabilizer which is an N,N''diaryl-p-phenylenediamine, all parts being by weight per 100 parts of polyethylene. A preferred diamine stabilizer weightper is that prepared by condensing 1 mole of hydroquinone with at least 2 moles of an amine mixture consisting of 75 to 90 percent by weight of o-toluidine and 25 to 10 percent by weight of technical mixed xylidines.

Patent Agency Ranking