Treofan Germany Gmbh & Co. Kg

Hoechst Aktiengesellschaft

Trespaphan Gmbh

Borealis Technology Oy

Hoechst Trespaphan Gmbh

Detlef Busch

Bertram Schmitz

Herbert Peiffer

Dominic Klein

Karl-Heinz Kochem

Gunter Schlogl

Thilo Mohr

Christian Peters

Thomas Dries

Andreas Winter

Harald Lohmann

Joachim Jung

Robert Schmidt

Petra Häde

Petra Hade

Harald Eiden

Ursula Murschall

Joachim Fiebig

Detlef E Schuhmann

Wilfrid Tews

Wolfgang Rasp

Yvo Daniels

Franck Jacobs

Albrecht Freynhofer

Yvonne Düpre

Gerhard Koch

Anreas Winter

Frank Ernst

Bertram Schmidt

Yvonne Duepre

Michael Thull

Dirk Walgenbach

Marlies Rosenbaum, Legal Representative

Melanie Wisniewski

Manfred Rosenbaum, Legal Representative

Marlies Rosenbaum

Manfred Rosenbaum

Matthias Roth

Josef Schaan

Sonja Rosenbaum

Bjoern Dragun

Bertam Schmitz

Sonja (deceased) Rosenbaum

Petra Haede

Björn Dragun

Karlheinz Kochem

The present invention relates to a microporous film and use thereof as separator with greater resistance to puncturing.

Microporous separator film having homogeneous porosity and greater resistance to puncturing

The invention describes an ion exchange membrane formed from a biaxially orientated single or multiple-layered &#x3b2;-porous polypropylene film which comprises at least one &#x3b2;-nucleating agent and an ion-conducting polymer and has a Gurley value of at least 10000 s.

Ion-exchange membrane made of a biaxially stretched &#x3b2;-porous film

The invention relates to a biaxially oriented, single or multilayer porous film comprising at least one porous layer, said layer containing at least one propylene polymer, wherein (i) the porosity of the porous film is 30% to 80%, and (ii) the permeability of the porous film is &#x3c;1000 s (Gurley value). The invention is characterized in that (iii) the porous film is provided with a partially inorganic, preferably ceramic lamination, and (iv) in that the laminated porous film has a Gurley value of &#x3c;1200 s. The invention further relates to a method for producing such a film, and to the use thereof in high-energy or high-performance systems, in particular in lithium batteries, lithium ion batteries, lithium polymer batteries, and alkaline earth batteries.

Highly porous separator film having partial coating

The invention relates to a method for producing a dispersion of nanoscale dicarboxylic acid salts, to the use of these dispersions for producing a compound, and to the use for producing films. The invention further relates to the use of the compounds for producing films.

Nanoscale &#x3b2;-nucleating agent for polypropylene

The invention relates to a biaxially oriented single- or multilayer porous foil, the porosity of which is generated by transformation of ss-crystalline polypropylene during orientation of the foil. The Gurley value of the foil is &#x3c;250 s. The invention also relates to a process for producing the foil by using a low transverse stretching velocity for the transverse orientation process.

Highly porous separator foil

The invention relates to a biaxially oriented electrical insulating film which is constituted of a base layer and at least one cover layer, the base layer containing a mixture from a polypropylene P1 and a polypropylene P2 which is different therefrom, the polypropylene P1 being a linear polypropylene and having an Mw/Mn&#x3e;5 and a mesopentadene isotactic index of at least 95% and the polypropylene P2 having a long-chain branching.

Biaxially oriented electrical insulating film

The present invention relates to a method for the disinfection, partial disinfection or sterilization of a product by means of UV radiation. A product is enclosed with a UV permeable packaging material made of polyhydroxycarboxylic acid and subsequently disinfecting, partially disinfecting or sterilizing in the packaged state by means of irradiation with UV radiation.

Packaging for UV sterilization

The invention relates to a biaxially oriented microporous film composed of at least two coextruded layers encompassing an external shut-off layer and another layer, wherein both layers contain a mixture of propylene homopolymer and propylene block copolymer and &#x3b2;-nucleation agent. The propylene block copolymer I of the other layer has a melting point exceeding 140&#xb0; C. and the propylene block copolymer II of the external shut-off layer has a melting range starting at a temperature ranging from 50 to 120&#xb0; C. The melting point of the propylene block copolymer I is greater than the melting point of the propylene block copolymer II. The film can be used as a separator in a primary or secondary battery.

Membrane file for batteries, having a shut-off function

The invention relates to a biaxially orientated, single or multi-layered porous film made of propylene homopolymer and/or propylene block copolymer and ss-nucleation agent. Said film has a Gurley value of between 50 to &#x3c;400 s and shrinkage in the longitudinal direction of &#x3c;5% at 100 DEG C./1 hour, and a transverse shrinkage of &#x3c;10% at 100 DEG C./1 hour.

Microporous separator-film for double-layer capacitors

The invention relates to a method for producing a biaxially oriented polypropylene film including at least one layer, which is constructed from propylene polymer B and a propylene polymer that has been recycled once. The method includes heat and melting propylene polymer B in a first extruder and heating a melting a propylene polymer A without a fraction of recycled material in a second extruder. The molten mass of the propylene polymer A is fed to two sides of the propylene polymer molten mass of B such that the propylene polymer A forms border regions of the film during the production process. The two border regions are then cut off after longitudinal and traverse stretching of the film, and melted and mixed together with the propylene polymer B and extruded to form a precursor film in the first extruder. The biaxially oriented polypropylene film comprising a propylene polymer that has been recycled only once is useful for producing capacitors.

Method for producing polypropylene films

Single-layer or multilayer, biaxially oriented, microporous foil having a shutdown function, which comprises at least one shutdown layer I, which comprises propylene homopolymer and ss-nucleating agent and polyethylene.

Microporous foil for batteries having shutdown function

The invention relates to a biaxially oriented microporous film composed of at least three coextruded layers encompassing an internal cut-off layer and two external layers, wherein all three layers contain a mixture of propylene homopolymer and propylene block copolymer and &#x3b2;-nucleation agent. The propylene block copolymer I of the external layers has a melting point exceeding 140&#xb0; C. and the propylene block copolymer II of the internal layer has a melting range starting at a temperature ranging from 50 to 120&#xb0; C. and the melting point of the propylene block copolymer I is greater than the melting point of the propylene block copolymer II.

Micro-porous multi-layer membrane film based on polypropylene for batteries with a cut-off function

The invention relates to a biaxially oriented, multilayer microporous foil including one layer made from propylene homopolymer, a propylene block copolymer, a polyethylene and &#x3b2;-nucleating agent, and at least one further porous layer.

Multi-layer microporous film for batteries having shut-off function

Growing community of inventors

Saarlouis, Germany

Detlef Busch