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1.发明专利
公开(公告)号：JPH11166031A
公开(公告)日：1999-06-22
申请号：JP22834598
申请日：1998-08-12
Applicant: EMTEC MAGNETICS GMBH
Inventor： WEINGART FRANZ , HACKL CHRISTA , KRECH RUEDIGER , BAUER STEPHAN , KOHL ALBERT , KRESS RIA , SCHELBLE JOSEF , BOHRMANN HANS-GUENTHER
Abstract: PROBLEM TO BE SOLVED: To obtain a thermoplastic polyurethane containing no isocyanate group, useful as a binder having improved dispersion characteristics for a mag netic recording medium having excellent magnetic characteristics, by subjecting a specific constituent component to melt polymerization and specifying a molecu lar weight, etc. SOLUTION: Constituent components comprising (A) a 1 mol of a polyol having 400-4,000 molecular weigh, (B) 0.3-9 mol of a mixture of (i) optionally a 2-18C diol and (ii) 0.03-0.4 mol of a diol containing one or more acidic groups, (C) 0-1 mol of a 3-18C polyol containing three or more OH groups, (D) 1.25-13 mols of a 6-30C diisocyanate and (E) 0-1 mol of a 2-16C primary or secondary amino-alcohol are subjected to melt polymerization so as to make the molar ratio of OH group and NH group in the components A, B, C and E to NCO group in the component D of 0.98-1.4 to give the objective polyurethane containing an acidic group, soluble in tetrahydrofuran and having 15,000-70,000 molecular weight.
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公开(公告)号：WO03038828A2
公开(公告)日：2003-05-08
申请号：PCT/EP0210973
申请日：2002-10-01
Applicant: EMTEC MAGNETICS GMBH , SCHELBLE JOSEF , TRAUB HANSJOERG , MUELLER STEFAN , SANDROCK JOHANNES
Inventor： SCHELBLE JOSEF , TRAUB HANSJOERG , MUELLER STEFAN , SANDROCK JOHANNES
CPC classification number: G11B5/714 , G11B5/70 , G11B5/7023
Abstract: The invention relates to a magnetic recording medium comprising a) a layer carrier, b) at least one lower non-magnetic layer which is applied to said carrier and comprises at least one binding agent, and c) an upper magnetic layer which is applied to the lower layer, and which, dispersed in at least one binding agent, comprises at least one magnetic metal pigment or metal alloy pigment having a passivating envelope. Said recording medium is characterised in that the upper magnetic layer has a maximum dry thickness of 300 nm; the magnetic metal pigment or metal alloy pigment has a maximum length I of 90 nm; and the length I' of the metal core, the length I of the pigment, and the shortest recording wavelength lambda for the magnetic recording on the medium follow the relation: I'/I#1-18/ lambda . At least the binding agent of the magnetic layer contains both chlorine and epoxy groups, or is free of chloride.
Abstract translation: 本发明涉及包含a）支撑的磁记录介质，b）至少一个施加到其降低包含至少一种粘合剂的非磁性层，以及c）被分散在至少一种粘合剂施加到下层上部磁性层的涂层， 包含具有Passivierungshülle至少一个磁性金属或金属合金颜料，其特征在于，所述上部磁性层具有在300nm以下的干厚度d; 磁性金属或金属合金颜料至多90纳米的总长度I，所述长度I'des金属芯，颜料的总长度l和用于在介质上的磁性记录下列关系服从最短记录波长为λ：I“/ I＃1-18 /λ并且其中至少含有磁性层如氯和环氧基团的粘合剂; 或不含氯化物。
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公开(公告)号：AU2002363261A1
公开(公告)日：2003-05-12
申请号：AU2002363261
申请日：2002-10-01
Applicant: EMTEC MAGNETICS GMBH
Inventor： TRAUB HANSJORG , SCHELBLE JOSEF , SANDROCK JOHANNES , MULLER STEFAN
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公开(公告)号：DE10153277A1
公开(公告)日：2003-05-08
申请号：DE10153277
申请日：2001-10-29
Applicant: EMTEC MAGNETICS GMBH
Inventor： SCHELBLE JOSEF , TRAUB HANSJOERG , MUELLER STEFAN , SANDROCK JOHANNES
Abstract: The invention relates to a magnetic recording medium comprising a) a layer carrier, b) at least one lower non-magnetic layer which is applied to said carrier and comprises at least one binding agent, and c) an upper magnetic layer which is applied to the lower layer, and which, dispersed in at least one binding agent, comprises at least one magnetic metal pigment or metal alloy pigment having a passivating envelope. Said recording medium is characterised in that the upper magnetic layer has a maximum dry thickness of 300 nm; the magnetic metal pigment or metal alloy pigment has a maximum length I of 90 nm; and the length I' of the metal core, the length I of the pigment, and the shortest recording wavelength lambda for the magnetic recording on the medium follow the relation: I'/I#1-18/ lambda . At least the binding agent of the magnetic layer contains both chlorine and epoxy groups, or is free of chloride.
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公开(公告)号：RU2174988C2
公开(公告)日：2001-10-20
申请号：RU96109203
申请日：1996-05-11
Applicant: EMTEC MAGNETICS GMBH
Inventor： BRODT GREGOR , SCHELBLE JOSEF , LEHNER AUGUST , WEINGART FRANZ , KOHL ALBERT , KRESS RIA , SCHNEIDER NORBERT
Abstract: chemical industry. SUBSTANCE: described is polymeric binder for pigment-containing agents or bodies for applying coatings. Said binder is product of reaction of polymer based on at least one complex alkyl ester of alpha j beta-saturated carboxylic acid having 1-25 carbon atoms in alkyl moiety which comprises at least one starter and/or regulator which allow for presence of one end hydroxy group on one of ends of most polymeric chains with at least one multiatomic nonaromatic isocyanate at isocyanate group to hydroxy group molar ratio of (1.2- 3.9):1, reaction of the resulting isocyanate group containing product with at least one compound containing groups reactive with respect to isocyanates at molar ratio of reactive groups to free isocyanate groups present in product of (2-7):1 followed by reaction of the resulting product with at least one compound which reacts with free reactive groups and which introduces acid groups into product or with at least one compound containing groups which are active with respect to isocyanates said compound introduces acid groups into product containing isocyanate groups. The resulting binders and bodies for coatings have improved stability. EFFECT: improved properties of the polymeric binder. 7 cl, 8 ex
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Patent Agency Ranking
公开(公告)号：NO20012258A
公开(公告)日：2001-07-06
申请号：NO20012258
申请日：2001-05-08
Applicant: EMTEC MAGNETICS GMBH
Inventor： KOHL ALBERT , REICH WOLFGANG , LEHNER AUGUST , HEIL GUENTHER , KOCH VOLKER , SCHELBLE JOSEF , ROEMER KARL-HEINZ , WEINGART FRANZ
IPC: C08F290/06 , C08G18/67 , C09D4/00 , C09D5/23 , C09D175/14 , C09D175/16 , G11B5/702 , G11B5/716 , G11B5/738 , C09D179/16
CPC classification number: G11B5/738 , C08G18/672 , C09D175/16 , G11B5/7021 , G11B5/7022 , G11B5/716 , Y10T428/31551 , C08G18/42
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7.发明专利
公开(公告)号：AU1033900A
公开(公告)日：2000-05-29
申请号：AU1033900
申请日：1999-10-08
Applicant: EMTEC MAGNETICS GMBH
Inventor： KOHL ALBERT , REICH WOLFGANG , LEHNER AUGUST , HEIL GUNTHER , KOCH VOLKER , SCHELBLE JOSEF , ROMER KARL-HEINZ , WEINGART FRANZ
IPC: C08F290/06 , C08G18/67 , C09D4/00 , C09D5/23 , C09D175/14 , C09D175/16 , G11B5/702 , G11B5/716 , G11B5/738
Abstract: A UV-curable binder composition, a coating material which contains such a binder composition, a photoiniator mixture suitable for use in these coating materials, and a magnetic recording medium which contains such a UV-curable coating material are described.
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公开(公告)号：DE19851567A1
公开(公告)日：2000-05-11
申请号：DE19851567
申请日：1998-11-09
Applicant: EMTEC MAGNETICS GMBH
Inventor： KOHL ALBERT , REICH WOLFGANG , LEHNER AUGUST , HEIL GUENTER , KOCH VOLKER , SCHELBLE JOSEF , ROEMER KARL-HEINZ , WEINGART FRANZ
IPC: C08F290/06 , C08G18/67 , C09D4/00 , C09D5/23 , C09D175/14 , C09D175/16 , G11B5/702 , G11B5/716 , G11B5/738 , C09D17/00 , C08G18/58
Abstract: The invention relates to a UV-radiation-hardenable binder composition, a coating agent containing a binder composition of this type, a photoinitiator mixture that is suitable for use in these coating agents and a magnetic recording medium containing a UV-radiation-hardenable coating agent of this type.
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公开(公告)号：DE19734893A1
公开(公告)日：1999-02-18
申请号：DE19734893
申请日：1997-08-12
Applicant: EMTEC MAGNETICS GMBH
Inventor： WEINGART FRANZ , HACKL CHRISTA , KRECH RUEDIGER , BAUER STEPHAN , KOHL ALBERT , KRESS RIA , SCHELBLE JOSEF , BOHRMANN HANS-GUENTHER
IPC: C08G18/28 , C08G18/08 , C08G18/38 , C08G18/42 , C08G18/66 , C09D5/23 , C09D175/04 , G11B5/702 , C08G18/34 , C08G18/50 , C08G18/32 , C08G18/76 , G11B5/62 , C08L75/04
Abstract: Thermoplastic polyurethane (I) with a molecular weight of 15000-70000, which contains acid groups, is soluble in tetrahydrofuran (THF) and is free from isocyanate (NCO) groups, comprises: (A) 1 mole polyol with a molecular weight of 400-4000, (B) 0.3-9 mole mixture of (B1) optionally a 2-18 carbon (C) diol and (B2) 0.03-0.4 mole diol containing acid group(s), (C) 0-1 mole 3-18 C polyol with NOTLESS 3 hydroxyl (OH) groups, (D) 1.25-13 mole 6-30 C diisocyanate and (E) 0-1 mole primary or secondary 2-16 C amino-alcohol. The molar ratio of OH and optionally NH groups in the sum of components A, B, C and E to NCO groups in D is 0.98-1.4. (I) is obtained by reacting these components in the melt. Also claimed are: (i) the preparation of (I) in this way; and (ii) magnetic recording media with a magnetic layer containing (I).
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公开(公告)号：DE59607438D1
公开(公告)日：2001-09-13
申请号：DE59607438
申请日：1996-04-26
Applicant: EMTEC MAGNETICS GMBH
Inventor： BRODT GREGOR , SCHELBLE JOSEF , LEHNER AUGUST , WEINGART FRANZ , KOHL ALBERT , KRESS RIA , SCHNEIDER NORBERT
Abstract: chemical industry. SUBSTANCE: described is polymeric binder for pigment-containing agents or bodies for applying coatings. Said binder is product of reaction of polymer based on at least one complex alkyl ester of alpha j beta-saturated carboxylic acid having 1-25 carbon atoms in alkyl moiety which comprises at least one starter and/or regulator which allow for presence of one end hydroxy group on one of ends of most polymeric chains with at least one multiatomic nonaromatic isocyanate at isocyanate group to hydroxy group molar ratio of (1.2- 3.9):1, reaction of the resulting isocyanate group containing product with at least one compound containing groups reactive with respect to isocyanates at molar ratio of reactive groups to free isocyanate groups present in product of (2-7):1 followed by reaction of the resulting product with at least one compound which reacts with free reactive groups and which introduces acid groups into product or with at least one compound containing groups which are active with respect to isocyanates said compound introduces acid groups into product containing isocyanate groups. The resulting binders and bodies for coatings have improved stability. EFFECT: improved properties of the polymeric binder. 7 cl, 8 ex
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