公开(公告)号：DE19519260A1

公开(公告)日：1996-12-05

申请号：DE19519260

申请日：1995-05-31

Applicant: HOECHST AG

Inventor： PEIFFER HERBERT DR ,  BUSCH DETLEF DIPL ING ,  DRIES THOMAS DR ,  SCHLOEGL GUNTER DR ,  WINTER ANDREAS DR

IPC: B32B27/32 ,  C08J5/18 ,  C08L23/10 ,  C08L23/12 ,  B29C47/34

Abstract: Biaxially oriented polypropylene (BOPP) film with at least one base layer contg. polypropylene (PP) is claimed, in which (a) the isotactic block length between two structural defects is more than 40 (statistical average), (b) the n-heptane-insol. component of the PP has an isotacticity (by C-NMR spectrometry) of at least 95%, (c) the mol. wt. ratio Mw/Mn is less than 4, (d) the PP contains less than 1% n-heptane-soluble component, and (e) the overall migration of the film (measured as described in DIN EN V 1186-3) is less than 5. Also claimed is a process for the prodn. of this BOPP film, by heating, compressing and melting the polymers for the different layers in extruders, combining the different melts, extruding through a sheet die, cooling and compacting the film on a take-off roll, and orienting the film by stretching in the machine direction by a factor of (3:1)-(9:1) and at right angles by a factor of (4:1)-(12:1).

公开(公告)号：DE4410559A1

公开(公告)日：1995-09-28

申请号：DE4410559

申请日：1994-03-26

Applicant: HOECHST AG

Inventor： PFEIFFER HERBERT DR ,  MURSCHALL URSULA DR ,  SCHLOEGL GUNTER DR ,  OSAN FRANK DR ,  DRIES THOMAS DR

IPC: C08J9/00 ,  B29C55/00 ,  C08J5/18 ,  C08L23/10 ,  C08L23/12 ,  C08L23/02 ,  B29C47/14 ,  B29D7/01 ,  C08K3/22

公开(公告)号：DE4337251A1

公开(公告)日：1995-03-30

申请号：DE4337251

申请日：1993-11-02

Applicant: HOECHST AG

Inventor： PEIFFER HERBERT DR ,  MURSCHALL URSULA DR ,  DRIES THOMAS DR ,  SCHLOEGL GUNTER DR

IPC: B32B27/32 ,  C08J5/18 ,  C08L23/06 ,  C08L23/10 ,  C08L23/14 ,  C08L83/04 ,  C08L23/12 ,  B29C55/12 ,  B32B27/20 ,  B65D65/38

公开(公告)号：DE4304377A1

公开(公告)日：1994-08-18

申请号：DE4304377

申请日：1993-02-13

Applicant: HOECHST AG

Inventor： MURSCHALL URSULA DR ,  PEIFFER HERBERT DR ,  SCHLOEGL GUNTER DR ,  DRIES THOMAS DR

IPC: B32B27/32 ,  B32B37/00 ,  B32B37/15 ,  B65D65/40 ,  C08L23/10 ,  C08L23/12 ,  C08L23/14 ,  B32B27/08 ,  B32B27/10 ,  B32B15/08 ,  B32B31/30

Abstract: The invention relates to a polyolefinic multilayer film which comprises a base layer containing polypropylene, and at least one outer layer. The outer layer contains a low-crystallinity C3/C4-olefin resin composition and has a minimum heat-sealing temperature of less than 84@C. The invention also relates to a process for the production of the multilayer film and to the use of the film.

公开(公告)号：ES2150615T3

公开(公告)日：2000-12-01

申请号：ES96108221

申请日：1996-05-23

Applicant: HOECHST AG

Inventor： PEIFFER HERBERT DR ,  BUSCH DETLEF DR ,  DRIES THOMAS DR ,  SCHLOGL GUNTER DR ,  WINTER ANDREAS DR

IPC: B29C47/06 ,  B29C55/12 ,  B29K23/00 ,  B29L7/00 ,  B29L9/00 ,  B32B27/18 ,  B32B27/32 ,  C08F8/00 ,  C08F10/06 ,  C08J5/18 ,  C08L23/10

Abstract: Biaxially oriented polypropylene film with at least one base layer contg. polypropylene has (a) isotactic block length between two structural defects of more than 40 (statistical average), (b) n-heptane-insol. component of the polypropylene with an isotacticity (by C-NMR spectrometry) of at least 95%, (c) mol. wt. ratio Mw/Mn of less than 4 and (d) polypropylene contg. less than 1% n-heptane-soluble component. Also claimed is a process for the prodn. of this film. Pref. the base layer (A) has elastic moduli of more than 2400 and more than 3800 N/mm in the machine direction and transverse direction respectively. (A) contains polypropylene in which the heptane-insol. component has an isotacticity of at least 96%, pref. at least 97%, and a Mw/Mn ratio of less than 3.0, pref. less than 2.7. The film may have outer layer(s) (B) of olefinic polymer on one or pref. both sides and interlayer(s) (C) of olefinic polymer between base and outer layers. Layer (A) contains an antistatic agent, (B) contain(s) lubricants and/or antiblocking agents, and (A), (B) and/or (C) contain neutralising agents and/or stabilisers; interlayer(s) (C) may contain neutralising agents, stabilisers, antistatics and/or antiblocking agents. Layers (B) may or may not be sealable. The total film thickness is 4-100 microns, with the base layer (A) making up 40-60% of this. Alternatively, the film may consist of a single layer.

公开(公告)号：AT195286T

公开(公告)日：2000-08-15

申请号：AT96108223

申请日：1996-05-23

Applicant: HOECHST AG

Inventor： PEIFFER HERBERT DR ,  BUSCH DETLEF DL ,  SCHLOEGL GUNTER DR ,  KOCHEM KARL-HEINZ DR ,  DRIES THOMAS DR ,  WINTER ANDREAS DR

IPC: B29C47/06 ,  B29C55/12 ,  B29K7/00 ,  B29K23/00 ,  B32B27/18 ,  B32B27/32 ,  C08F8/00 ,  C08F10/06 ,  C08J5/18 ,  C08L23/10

Abstract: Biaxially oriented polypropylene (PP) film comprises base ply (or plies) contg. PP having the following properties: (i) a mean isotactic block length of the PP mol. between 2 structural chain defects of, as statistical average, greater than 40; (ii) chain isotactic index for n-heptane-insol. fraction of PP of at least 95%, measured by means of C-NMR spectroscopy; (iii) ratio of wt. average Mw to the number average Mn of the mol. wt. distribution of less than 4; (iv) an n-heptane-soluble fraction of PP of less than 1%; and (v) film shrinkage in the longitudinal direction and in the transverse direction of less than 5%. Also claimed are: (a) a process for the prodn. of the above PP film; (b) the use of the PP film as a packaging film ; (c) the use of the PP film as a laminating film.

公开(公告)号：ES2143997T3

公开(公告)日：2000-06-01

申请号：ES93113379

申请日：1993-08-21

Applicant: HOECHST AG

Inventor： DRIES THOMAS DR ,  SCHLOGL GUNTER DR ,  SPALECK WALTER DR ,  WINTER ANDREAS DR

IPC: B32B27/32 ,  C08L23/10 ,  C09J123/10 ,  C09J123/12

Abstract: A composite film is described which has at least one base layer which predominantly comprises polypropylene, and at least one top layer. The top layer is sealable and comprises a homopolymer of an olefin. A process for producing the composite film, the top layer olefin homopolymer and packaging material made from the film also are described.

公开(公告)号：DE4426184A1

公开(公告)日：1996-01-25

申请号：DE4426184

申请日：1994-07-23

Applicant: HOECHST AG

Inventor： PEIFFER HERBERT DR ,  DRIES THOMAS DR ,  MURSCHALL URSULA DR ,  SCHRECK MICHAEL DR

IPC: B32B27/18 ,  B32B27/32 ,  B29C47/30 ,  B29C55/12 ,  B29C59/16 ,  B32B27/10 ,  B32B31/30 ,  B65D65/38

公开(公告)号：DE4335960A1

公开(公告)日：1995-04-27

申请号：DE4335960

申请日：1993-10-21

Applicant: HOECHST AG

Inventor： PEIFFER HERBERT DR ,  MURSCHALL URSULA DR ,  DRIES THOMAS DR

IPC: B29C47/00 ,  B29C47/78 ,  B29C55/00 ,  B29C55/12 ,  B29C55/14 ,  B29K23/00 ,  B29L7/00 ,  C08J5/18 ,  C08K5/14 ,  C08K5/20 ,  C08L23/10 ,  C08L23/12 ,  C08L57/02 ,  C08L91/06 ,  B29C47/14 ,  B65B11/14 ,  B65D65/38 ,  C08L25/04 ,  C08L45/00 ,  C08L93/00

公开(公告)号：DE4318031A1

公开(公告)日：1994-12-01

申请号：DE4318031

申请日：1993-05-29

Applicant: HOECHST AG

Inventor： PEIFFER HERBERT DR ,  MURSCHALL URSULA DR ,  DRIES THOMAS DR ,  SCHLOEGL GUNTER DR

IPC: B29C55/02 ,  B32B27/32 ,  B65D65/40 ,  B32B27/18 ,  B32B31/30 ,  B29C47/30 ,  B29C55/12

Abstract: The invention relates to a multilayer polypropylene film which comprises at least one base layer containing polypropylene or a polypropylene mixture and resin, and at least one outer layer containing alpha -olefinic polymers having 2 to 10 carbon atoms. The resin has a mean molecular weight Mw >/= 1,500. The invention also relates to a process for the production of the multilayer film and to the use of the film.