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    2.
    发明专利
    未知

    公开(公告)号：FI96013B

    公开(公告)日：1996-01-15

    申请号：FI885459

    申请日：1988-11-24

    Applicant: HOECHST AG

    Inventor： BOTHE LOTHAR ,  CRASS GUENTHER ,  SCHLOEGL GUNTER ,  WILHELM THOMAS

    IPC: B29K23/00 ,  B29K105/34 ,  B29L9/00 ,  B32B27/32 ,  C08L23/12 ,  B29C55/12 ,  H01B17/60 ,  H01G4/18 ,  B32B27/18 ,  B32B15/08 ,  H01B3/44 ,  H01G4/20

    Abstract: The multilayered film comprises a base layer of high-purity raw material for films for use in the electrical sector, and outer layers on one or both sides. It is suitable as an electrical insulation film, in particular as a dielectric in an electrical capacitor, and has dielectric properties which are improved for this purpose. The base layer and the outer layer(s) contain propylene polymers and stabilisers for the propylene polymers. The raw material of the base layer has an idealised thermooxidation temperature in the range from 260 to 300 DEG C, preferably from 260 to 280 DEG C, and the raw material of the outer layer(s) has an idealised thermooxidation temperature in the range from 240 to 300 DEG C, preferably from 240 to 270 DEG C. The multilayer film as a whole has an idealised thermooxidation temperature of from 250 to 290 DEG C, in particular from 250 to 275 DEG C. The content of organic neutralisers, in particular calcium stearate, in the raw materials is less than or equal to 100 ppm.

    3.
    发明专利
    未知

    公开(公告)号：FI885459A

    公开(公告)日：1989-05-29

    申请号：FI885459

    申请日：1988-11-24

    Applicant: HOECHST AG

    Inventor： BOTHE LOTHAR ,  CRASS GUENTHER ,  SCHLOEGL GUNTER ,  WILHELM THOMAS

    IPC: B29K23/00 ,  B29C55/12 ,  B29K105/34 ,  B29L9/00 ,  B32B27/32 ,  C08L23/12 ,  H01B17/60 ,  H01G4/18 ,  B32B

    Abstract: The multilayered film comprises a base layer of high-purity raw material for films for use in the electrical sector, and outer layers on one or both sides. It is suitable as an electrical insulation film, in particular as a dielectric in an electrical capacitor, and has dielectric properties which are improved for this purpose. The base layer and the outer layer(s) contain propylene polymers and stabilisers for the propylene polymers. The raw material of the base layer has an idealised thermooxidation temperature in the range from 260 to 300 DEG C, preferably from 260 to 280 DEG C, and the raw material of the outer layer(s) has an idealised thermooxidation temperature in the range from 240 to 300 DEG C, preferably from 240 to 270 DEG C. The multilayer film as a whole has an idealised thermooxidation temperature of from 250 to 290 DEG C, in particular from 250 to 275 DEG C. The content of organic neutralisers, in particular calcium stearate, in the raw materials is less than or equal to 100 ppm.

    7.
    发明专利
    未知

    公开(公告)号：FI894319A0

    公开(公告)日：1989-09-13

    申请号：FI894319

    申请日：1989-09-13

    Applicant: HOECHST AG

    Inventor： WILHELM THOMAS ,  SCHLOEGL GUNTER ,  BOTHE LOTHAR ,  CRASS GUENTHER

    IPC: B29K23/00 ,  B29C55/12 ,  B29L7/00 ,  C08J5/18 ,  C08K5/09 ,  C08L23/10 ,  H01B3/44 ,  H01B17/60 ,  H01G4/18 ,  H01B

    Abstract: The extruded, biaxially oriented dielectric film is composed of high-purity electrical film raw material. It is suitable as electrical insulating film in particular as a dielectric in an electrical capacitor, and exhibits improved dielectric properties for this prupose. The film comprises propylene polymers and stabilizers for the propylene polymers. The raw material of the film has an idealized thermo-oxidation temperature in the range from 260 DEG to 300 DEG C., preferably 260 DEG to 280 DEG C. The dielectric film has an idealized thermo-oxidation temperature of 250 DEG to 300 DEG C., in particular 250 DEG to 280 DEG C. The content of organic neutralizing agents, in particular calcium stearate, in the raw material is less than/equal to 100 ppm.

    8.
    发明专利
    未知

    公开(公告)号：FI885459A0

    公开(公告)日：1988-11-24

    申请号：FI885459

    申请日：1988-11-24

    Applicant: HOECHST AG

    Inventor： BOTHE LOTHAR ,  CRASS GUENTHER ,  SCHLOEGL GUNTER ,  WILHELM THOMAS

    IPC: B29K23/00 ,  B29C55/12 ,  B29K105/34 ,  B29L9/00 ,  B32B27/32 ,  C08L23/12 ,  H01B17/60 ,  H01G4/18 ,  B32B

    Abstract: The multilayered film comprises a base layer of high-purity raw material for films for use in the electrical sector, and outer layers on one or both sides. It is suitable as an electrical insulation film, in particular as a dielectric in an electrical capacitor, and has dielectric properties which are improved for this purpose. The base layer and the outer layer(s) contain propylene polymers and stabilisers for the propylene polymers. The raw material of the base layer has an idealised thermooxidation temperature in the range from 260 to 300 DEG C, preferably from 260 to 280 DEG C, and the raw material of the outer layer(s) has an idealised thermooxidation temperature in the range from 240 to 300 DEG C, preferably from 240 to 270 DEG C. The multilayer film as a whole has an idealised thermooxidation temperature of from 250 to 290 DEG C, in particular from 250 to 275 DEG C. The content of organic neutralisers, in particular calcium stearate, in the raw materials is less than or equal to 100 ppm.

    9.
    发明专利
    未知

    公开(公告)号：FI103098B1

    公开(公告)日：1999-04-30

    申请号：FI915213

    申请日：1991-11-05

    Applicant: HOECHST AG

    Inventor： BOTHE LOTHAR ,  DOLLE VOLKER ,  WINTER ANDREAS ,  WILHELM THOMAS

    IPC: B32B7/02 ,  B32B27/32 ,  B65D65/40 ,  C08J7/04

    Abstract: A polyolefin film which comprises a polypropylene base layer and at least one top layer of a propylene polymer, wherein the base layer is formed of an isotactic polypropylene and the top layer of a syndiotactic polypropylene, has high sealed-seam strength and excellent optical properties and is useful as, for example, a packaging material.

    10.
    发明专利
    未知

    公开(公告)号：MX9101939A

    公开(公告)日：1993-07-01

    申请号：MX9101939

    申请日：1991-11-05

    Applicant: HOECHST AG

    Inventor： BOTHER LOTHAR ,  DOLLE VOLKER ,  WINTER ANDREAS ,  WILHELM THOMAS

    IPC: B32B7/02 ,  B32B27/32 ,  B65D65/40 ,  C08J7/04 ,  C08J5/18

    Abstract: A polyolefin film which comprises a polypropylene base layer and at least one top layer of a propylene polymer, wherein the base layer is formed of an isotactic polypropylene and the top layer of a syndiotactic polypropylene, has high sealed-seam strength and excellent optical properties and is useful as, for example, a packaging material.

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