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    51.
    发明专利
    未知

    公开(公告)号：FI952326A

    公开(公告)日：1995-11-17

    申请号：FI952326

    申请日：1995-05-12

    Applicant: HOECHST AG

    Inventor： PEIFFER HERBERT ,  MURSCHALL URSULA ,  BUSCH DETLEF ,  LOHMANN HARALD

    IPC: B29C55/00 ,  B32B27/32 ,  C08F8/00 ,  C08J5/18 ,  C08L23/12 ,  B29D7/01 ,  B29C55/12 ,  C08F10/06

    Abstract: A process for the production of a biaxially oriented propylene polymer film contains, in its single ply (or, if it is a multi-ply film, in its base ply) a low molecular weight resin, and the film has improved stretchability and other desirable physical properties, even though the propylene polymer of the sole or base ply is preferably a homopolymer. The n-heptane-insoluble fraction of the film has a chain isotacticity index, measured by means of 13C-NMR spectroscopy, of at least 85 to 94%. The sole or base ply contains less than 10% by weight of resin. The film is stretched in such a way that the product of tensile strength in the longitudinal and transverse direction is greater than 50,000 (N/mm2)2. The film is made by, among other steps, carrying out the orientation in the longitudinal and transverse directions such that the product of the longitudinal stretching ratio and the transverse stretching ratio is>/=60.

    Matte biaxially oriented multilayer polypropylene film process for the production thereof and the use thereof
    58.
    发明专利
    Matte biaxially oriented multilayer polypropylene film process for the production thereof and the use thereof 未知

    公开(公告)号：ZA942836B

    公开(公告)日：1995-01-18

    申请号：ZA942836

    申请日：1994-04-25

    Applicant: HOECHST AG

    Inventor： PEIFFER HERBERT ,  MURSCHALL URSULA ,  SCHLOEGL GUNTER

    IPC: B32B27/32 ,  C08L9/00 ,  C08L23/06 ,  C08L23/10 ,  C08L23/12 ,  C08L23/14 ,  C08L57/02 ,  B32B ,  B29C

    Abstract: The invention relates to a multilayered polypropylene film comprising at least one base layer containing polypropylene or a polypropylene mixture and resin, and at least one top layer containing a mixture or blend of two components I and II. The component I essentially contains a propylene homopolymer or a copolymer of ethylene and propylene or ethylene and butylene or propylene and butylene or ethylene and another alpha -olefin having 5 to 10 carbon atoms or propylene and another alpha -olefin having 5 to 10 carbon atoms or a terpolymer of ethylene and propylene and butylene or ethylene and propylene and another alpha -olefin having 5 to 10 carbon atoms or a mixture of two or more of said homopolymers, copolymers and terpolymers or a blend of two or more of said homopolymers, copolymers and terpolymers, optionally mixed with one or more of said homopolymers, copolymers and terpolymers. Component II essentially contains an HDPE or a blend of two blend components A and B. Blend component A is essentially an HDPE. Blend component B is essentially a propylene homopolymer or a copolymer of ethylene and propylene or ethylene and butylene or propylene and butylene or ethylene and another alpha -olefin having 5 to 10 carbon atoms or propylene and another alpha -olefin having 5 to 10 carbon atoms or a terpolymer of ethylene and propylene and butylene or ethylene and propylene and another alpha -olefin having 5 to 10 carbon atoms or a mixture of two or more of said homopolymers, copolymers and terpolymers or a blend of two or more of said homopolymers, copolymers and terpolymers. The film is matt.

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