18.
    发明专利
    未知

    公开(公告)号:DE1669721A1

    公开(公告)日:1971-06-09

    申请号:DE1669721

    申请日:1967-09-05

    Applicant: BASF AG

    Abstract: 1,228,908. Production of polypropylene moulding material. B DISCRE ANILIN- & SODAFABRIK A.G. 4 Sept., 1968 [5 Sept., 1967], No. 41967/68. Heading C3P. A moulding material is produced by kneading mixtures of polypropylene and 5 to 20% of an elastomeric polymer containing at least 10% of polymerized 1,3 - diene units, at temperatures of 110‹ to 250‹ C. for 30 seconds to 60 minutes in the presence of an organic peroxide, the polypropylene having a fraction soluble in heptane of 10 to 40%. In the examples the elastomeric polymers are polybutadiene, a butadienestyrene block copolymer, a mixture of polybutadienes of differing stereoregularity and graft polymers of polybutadiene and polyethylene or polyisobutylene. Exemplified peroxides are benzoyl peroxide, cumene and t - butylhydroperoxides, diisopropylbenzene diperoxide, dicumyl peroxide, 3 - phenyl - 3- t - butylperoxyphthalide, and di - t - butyl peroxide.

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