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    PROCESS FOR RECOVERING RAW MATERIALS FROM MAGNETIC RECORDING CARRIERS
    1.
    发明申请
    PROCESS FOR RECOVERING RAW MATERIALS FROM MAGNETIC RECORDING CARRIERS 审中-公开
    从磁记录载体回收原材料的方法

    公开(公告)号：WO9524443A3

    公开(公告)日：1995-11-16

    申请号：PCT/EP9500695

    申请日：1995-02-25

    Applicant: BASF MAGNETICS GMBH ,  WUENSCH THOMAS ,  SARTOR KARL HEINZ ,  SCHULZE AXEL RUEDIGER ,  MUELLER NORBERT ,  EICHER JOCHEN ,  STEPHAN OSKAR

    Inventor： WUENSCH THOMAS ,  SARTOR KARL-HEINZ ,  SCHULZE AXEL-RUEDIGER ,  MUELLER NORBERT ,  EICHER JOCHEN ,  STEPHAN OSKAR

    IPC: B29B17/02 ,  B29B17/04 ,  C08J11/06 ,  C08J11/08

    CPC classification number: B29B17/02 ,  B29B2017/0293 ,  B29K2067/00 ,  B29K2075/00 ,  B29K2705/00 ,  B29L2007/00 ,  C08J11/06 ,  C08J11/08 ,  Y02W30/622 ,  Y02W30/701

    Abstract: PCT No. PCT/EP95/00695 Sec. 371 Date Sep. 9, 1996 Sec. 102(e) Date Sep. 9, 1996 PCT Filed Feb. 25, 1995 PCT Pub. No. WO95/24443 PCT Pub. Date Sep. 14, 1995Magnetic powder and substrate material are separately recovered from finely chopped wastes of magnetic recording media consisting of a polymeric substrate and a magnetic layer present thereon in which finely divided magnetic powder is dispersed in crosslinked or uncrosslinked polymeric binder by treating the finely chopped wastes of magnetic recording media in a solution consisting of the potassium salt of a polyunsaturated fatty acid, or a biodegradable cleaning agent comprising phosphates, surfactants and a complexing agent, and one or more organic solvents or water while being subjected to mechanical action, and separately removing the magnetic powder from the substrate material by washing or sedimentation or in a magnetic separator.

    Abstract translation: PCT No.PCT / EP95 / 00695 Sec。 371日期1996年9月9日 102（e）日期1996年9月9日PCT 1995年2月25日提交PCT公布。 WO95 / 24443 PCT出版物 日期1995年9月14日磁粉和基片材料分别从精细切碎的由聚合物基底和磁性层组成的磁记录介质的废物中回收，其中细分磁性粉末分散在交联或未交联的聚合物粘合剂中， 在由多不饱和脂肪酸的钾盐组成的溶液或包含磷酸盐，表面活性剂和络合剂的生物可降解清洁剂以及一种或多种有机溶剂或水的机械作用下，将磁性记录介质的切碎的废物，以及 通过洗涤或沉降或磁选机分别从基底材料中除去磁粉。

    2.
    发明专利
    未知

    公开(公告)号：DE19548319A1

    公开(公告)日：1997-06-26

    申请号：DE19548319

    申请日：1995-12-22

    Applicant: BASF MAGNETICS GMBH

    Inventor： MUELLER NORBERT DR ,  EICHER JOCHEN DR ,  SARTOR KARL-HEINZ

    IPC: B29C45/00 ,  C08J5/08 ,  C08K3/08 ,  C08K3/22 ,  C08L63/00 ,  C08L67/02 ,  C08L69/00 ,  C08L75/04

    Abstract: A thermoplastic moulding material based on polyethylene terephthalate contains preferably 37-96 wt % PET, 1-20 wt % polymer material containing preferably polyurethane, and approximately 4-30 wt % pigment-type stiffening agent of, in particular, metal and/or metal oxide CrO2. The moulding materials can be advantageously processed in injection moulding and the resulting mouldings have advantageous properties, in particular higher density, compared to a comparable glass fibre-filled polybutylene terephthalate (PBT). The proposed thermoplastic moulding material can be advantageously used for small parts and housing parts, especially for electronic and data-processing devices.

    3.
    发明专利
    未知

    公开(公告)号：DE4407900A1

    公开(公告)日：1995-09-14

    申请号：DE4407900

    申请日：1994-03-09

    Applicant: BASF MAGNETICS GMBH

    Inventor： WUENSCH THOMAS ,  SARTOR KARL-HEINZ ,  SCHULZE AXEL-RUEDIGER ,  MUELLER NORBERT ,  EICHER JOCHEN ,  STEPHAN OSKAR

    IPC: B29B17/02 ,  B29B17/04 ,  C08J11/06 ,  C08J11/08 ,  C08J11/04

    Abstract: The invention concerns the recovery for re-use of magnetic powder and polyethyleneterephthalate from a magnetic recording carrier consisting of a PET layer carrier and a magnetic layer cast thereon, in which finely particulate magnetic powder is finely dispersed in a polyurethane binder. According to the invention, finely cut waste magnetic tape is treated at a high temperature in an alkaline medium consisting of potassium salts of polyunsaturated fatty acids, one or more organic solvents and optionally water, a catalyst and surfactants. The magnetic layer detached in this way is separated from the layer carrier by a washing process and then both the layer carrier and the magnetic powder are dried. The valuable substances recovered in this way can be subjected to further processing and used for other application purposes.

    Process for recovering raw materials from magnetic recording carriers
    7.
    发明专利
    Process for recovering raw materials from magnetic recording carriers 未知

    公开(公告)号：AU1947095A

    公开(公告)日：1995-09-25

    申请号：AU1947095

    申请日：1995-02-25

    Applicant: BASF MAGNETICS GMBH

    Inventor： WUENSCH THOMAS ,  SARTOR KARL-HEINZ ,  SCHULZE AXEL-RUEDIGER ,  MUELLER NORBERT ,  EICHER JOCHEN ,  STEPHAN OSKAR

    IPC: B29B17/02 ,  B29B17/04 ,  C08J11/06 ,  C08J11/08

    Abstract: PCT No. PCT/EP95/00695 Sec. 371 Date Sep. 9, 1996 Sec. 102(e) Date Sep. 9, 1996 PCT Filed Feb. 25, 1995 PCT Pub. No. WO95/24443 PCT Pub. Date Sep. 14, 1995Magnetic powder and substrate material are separately recovered from finely chopped wastes of magnetic recording media consisting of a polymeric substrate and a magnetic layer present thereon in which finely divided magnetic powder is dispersed in crosslinked or uncrosslinked polymeric binder by treating the finely chopped wastes of magnetic recording media in a solution consisting of the potassium salt of a polyunsaturated fatty acid, or a biodegradable cleaning agent comprising phosphates, surfactants and a complexing agent, and one or more organic solvents or water while being subjected to mechanical action, and separately removing the magnetic powder from the substrate material by washing or sedimentation or in a magnetic separator.

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