Partitioning agent for plastics - consisting of cross-linked unsat polyester resin powder

    公开(公告)号:DE2225613A1

    公开(公告)日:1973-12-06

    申请号:DE2225613

    申请日:1972-05-26

    Applicant: BASF AG

    Abstract: Polyester resins in fine particle form, obtd. by radical copolymerisation of unsatd. polyesters and monomers contg. C=C bonds, are used as partitioning agents for plastics which tend to stick together at normal temps. Examples of plastics for which the partitioning agents are suitable include polyisobutylene, ethylene copolymers and their mixts. with bitumen, in the form of sheet, tubes, films, fibres, granulate, etc. The polyester resin is dusted on the surface or applied as dispersion. The coating remains effective for long periods and has no significant effect on the props of the plastics.

    6.
    发明专利
    未知

    公开(公告)号:DE1720273A1

    公开(公告)日:1971-06-09

    申请号:DEB0092386

    申请日:1967-05-06

    Applicant: BASF AG

    Abstract: 1,215,837. Low molecular weight polyethylene. BADISCHE ANILIN. & SODAFABRIK A.G. 2 May, 1968 [6 May, 1967], No. 20861/68. Heading C3P. Low molecular weight waxy polyethylene (a molecular weight up to 10,000) is prepared by-polymerizing ethylene at 200-300‹ C. and under a pressure of 1200-2500 atmospheres using a free-radical initiation, wherein the ethylene contains (a) 10-30% by volume of hydrogen or a C 2 -C 4 alkane and (b) 0À5-3% by volume of a C 3 -C 4 alkene. The alkane component (a) may be one or more of ethane, propane, butane and isobutane and (b) may be one or more of propene, butene-1, butene-2 and isobutylene. The initiator, which may be oxygen or dilauroyl peroxide, is perferably used in amounts of 0À5-2 moles per mole of ethylene. In the examples, ethylene containing hydrogen or propane, and propene or isobutylene, is continuously polymerized, the initiator being oxygen or dilauroyl peroxide.

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