公开(公告)号：JPH10321215A

公开(公告)日：1998-12-04

申请号：JP8151998

申请日：1998-03-27

Applicant: EMTEC MAGNETICS GMBH

Inventor： BAUER STEPHAN DR ,  BRONSTERT BERND ,  BURKHARDT UWE ,  WEINGART FRANZ DR ,  KESSLER THOMAS ,  MOEHWALD HELMUT DR ,  HENNENBERGER FLORIAN

IPC: H01G9/025 ,  B29C47/00 ,  B29C47/10 ,  B32B27/00 ,  B32B27/18 ,  C08K3/10 ,  H01B1/12 ,  H01G9/028 ,  H01M2/16 ,  H01M4/02 ,  H01M4/04 ,  H01M4/58 ,  H01M10/40

Abstract: PROBLEM TO BE SOLVED: To provide a lithium battery by mixing a pigment, a copolymer and a plasticizer in specified ratios, and preparing the melted body of the mixture followed by extrusion molding. SOLUTION: This method comprises preparing the melted body of a mixture containing, in a ratio of 1-100 wt.%, a mixture containing 1-95 wt.% of a pigment containing at least one of an electrochemically inactive solid having a primary grain size of 5 nm-20 μm, a compound capable of releasing Li ion in charging, and a compound capable of receiving Li ion in charging; 5-99 wt.% of at least one copolymer of vinylidene fluoride and 8-25 wt.% of hexafluoroproplylene; and 1-200 wt.%, to the total amount of the pigment and the copolymer, of a plasticizer containing two or more of seven kinds such as dibutyl phthalate, dimethyl phthalate and the like, and subjecting the melted body to extruding process. According to this method, a molded body, particularly, a film-like molded body can be produced.

公开(公告)号：DE19626824A1

公开(公告)日：1998-01-08

申请号：DE19626824

申请日：1996-07-03

Applicant: EMTEC MAGNETICS GMBH

Inventor： WEINGART FRANZ DR ,  BURKHARDT UWE ,  BAUER STEPHAN DR ,  REICH WOLFGANG DR ,  KOHL ALBERT ,  KRESS RIA DR ,  TRAUB HANSJOERG DR ,  LOCH WERNER DR

IPC: C08G18/83 ,  G11B5/702 ,  C08L75/04 ,  C08L75/06 ,  C08L75/08 ,  C08L75/12 ,  C09D175/04

Abstract: A magnetic recording material contains a layer comprising a magnetic pigment and a polyurethane binder (I) prepared by reacting an isocyanate (II) with a chain extender (V).(II) are (a) prepolymers prepared by reacting (A1) a polyvalent alcohol (III) containing more than one hydroxyl group per molecule capable of reacting with (II), with (A2) an aromatic or aliphatic polyvalent isocyanate (IV), or (b) compounds (IV). The ratio of reactive hydroxyl groups in (III) to the isocyanate groups in (IV) is less than 1. (V) are prepared by reacting (a) a polyvalent alcohol (VI) with either (b1) a compound (VII) containing an epoxy group and an additional functional group which is reactive with alcohols, forming a compound (VIII) which is reacted with an alpha,beta-olefinic unsaturated carboxylic acid (IX) to form a compound (X), or (b2) a compound (IX) to form a compound (X), and then (c) reacting (X) with an amine (XI) containing at least one prim. amino group which can react with olefinic bond in (IX). The sum of reactive amino and hydroxyl groups in (V) is greater than the number of isocyanate groups in (II).

公开(公告)号：DE19757670A1

公开(公告)日：1999-07-01

申请号：DE19757670

申请日：1997-12-23

Applicant: EMTEC MAGNETICS GMBH

Inventor： LEHNER AUGUST ,  KOHL ALBERT ,  KRESS RIA DR ,  WUENSCH THOMAS DR ,  WEINGART FRANZ DR

IPC: C09D5/23 ,  C09D175/04 ,  G11B5/702 ,  C08G18/10 ,  C08G18/32 ,  C08G18/65 ,  C08G18/38

Abstract: The present invention relates to a magnetic recording medium, comprising a non-magnetic support and at least one magnetic coating applied thereto, whereby said coating contains at least one finely distributed magnetic material dispersed in a binding agent. Said binding agent contains at least one polyurethane resin (PV, which can be obtained by cross-linking at least one polyisocyanate (A) with at least one polyurethane prepolymer (B) which is free of isocyanate groups and contains at least 3 active hydrogen atoms. The invention is characterised in that the polyurethane prepolymer (B) has at least two hydroxyl groups and at least one primary and/or secondary amino group. The invention also relates to a method for producing a magnetic recording medium, polyurethane prepolymers B) which are free of isocyanate and a method for the production and use thereof.