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公开(公告)号：JPH03152116A
公开(公告)日：1991-06-28
申请号：JP22851890
申请日：1990-08-31
Applicant: BASF AG
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Patent Agency Ranking
公开(公告)号：JPH03152713A
公开(公告)日：1991-06-28
申请号：JP22851790
申请日：1990-08-31
Applicant: BASF AG
Inventor： MIHIYAERU BOBURITSUHI , HERUMAN RORAA , AUGUSUTO REENAA , UBUE KEPERAA , RUDORUFU ZUYUTEINGAA , BUERUNAA ROTSUHO , BUERUNAA RENTSU , GIYUNTAA SHIYURUTSU
IPC: C08G18/12 , C08G18/61 , C08G18/65 , C08G18/66 , C08G18/76 , C08L75/04 , C09D5/23 , C09D175/00 , C09D175/04 , G11B5/702
Abstract: PURPOSE: To improve a slippery characteristic and to lessen friction by using a nonmagnetic base body material and magnetic material powder in a binder contg. at least 50wt.% thermoplastic polyurethane as chief materials and using the specific plastic polyurethane. CONSTITUTION: This magnetic recording carrier consists of the nonmagnetic base body material and the magnetic material powder in the binder contg. at least 50wt.% thermoplastic polyurethane as the chief materials and has at least one layer of magnetic layers adhered and formed on a base body. In such a case, the thermoplastic polyurethane has 30 to 160 pieces and more particularly 40 to 80 pieces of OH groups and has a mol.wt. from 4000 to 30000 corresponding to a K value of 20 to 45 (measured as 1% soln. in DMF). As a result, the recording carrier having the improved wear resistance and decreased coefft. of friction is obtd.
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公开(公告)号：JPH03135950A
公开(公告)日：1991-06-10
申请号：JP21728890
申请日：1990-08-20
Applicant: BASF AG
Inventor： UBUE KEPERAA , MIHIYAERU BOBURITSUHI
IPC: C07C275/26 , C07C305/10 , C07C309/12 , C07D303/16 , C07F9/38 , C08G18/08 , C08G18/38 , C08G18/65 , C08G18/67
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公开(公告)号：JPH0395718A
公开(公告)日：1991-04-22
申请号：JP21913690
申请日：1990-08-22
Applicant: BASF AG
Inventor： UBUE KEPERAA , MIHIYAERU BOBURITSUHI , GIYUNTAA HAIRU , HERUMAN RORAA , AUGUSUTO REENAA , BUERUNAA RENTSU , GIYUNTAA SHIYURUTSU
IPC: C08G18/12 , C08G18/66 , C08G18/76 , C08L75/04 , C09D5/23 , C09D175/00 , C09D175/04 , C09D177/02 , C09D179/08 , G11B5/702
Abstract: PURPOSE: To make it possible to obtain various excellent mechanical characteristics by using specific polyurethane which is soluble in tetrahydrofuran, has no isocyanate groups, has side chains and has urea groups (plural) contg. OH groups at chain terminals as a binder. CONSTITUTION: The polyurethane which is soluble in the tetrahydrofuran, has no isocyanate groups, has the side chains, has the urea groups contg. the OH groups at the chain terminals and has a mol. wt. of 40000 to 2000000 is used as the thermoplastic polyurethane. The polyurethane formed in such a manner that the ratio of the OH groups of components A to C: the NCO groups of a component D: the amino groups of a component E are 1:1.03 to 1.3:0.03 to 0.3 from A. 1mol mixture composed of polydiol having a mol. wt. of 400 to 4000 and A2) polydiol having a mol. wt. exceeding 1400 of >=10 in the molar ratio of A1 to A2, B. 0.3 to 10mol mixture composed of arom. diol and B2) straight chain diol, C. 0.05 to 0.5mol tri- or polyol, D. 1.3 to 13mol diisocyanate, E. 0.09 to 2mol aminoalcohol is used. As a result, the binder which is excellent in a mechanical behavior is obtd.
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公开(公告)号：JPH03152115A
公开(公告)日：1991-06-28
申请号：JP22851590
申请日：1990-08-31
Applicant: BASF AG
Inventor： MIHIYAERU BOBURITSUHI , AUGUSUTO REENAA , ARUBERUTO KOORU , RUDORUFU ZUYUTEINGAA , UBUE KEPERAA , BUERUNAA RENTSU , HERUMAN RORAA , HERUMUUTO KOPUKE , GIYUNTAA HIYURUTSU
IPC: C08G18/12 , C08G18/38 , C08G18/50 , C08G18/65 , C08G18/66 , C08L75/04 , C09D5/23 , C09D175/00 , C09D175/04 , G11B5/702
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公开(公告)号：JPH03152114A
公开(公告)日：1991-06-28
申请号：JP22851490
申请日：1990-08-31
Applicant: BASF AG
Inventor： UBUE KEPERAA , BUERUNAA RENTSU , GIYUNTAA SHIYURUTSU , ARUBERUTO KOORU , MIHIYAERU BOBURITSUHI , AUGUSUTO REENAA , HERUMAN RORAA , RUDORUFU ZUYUTEINGAA
IPC: C08G18/12 , C08G18/61 , C08G18/65 , C08G18/66 , C08G18/76 , C08L75/04 , C09D5/23 , C09D175/00 , C09D175/04 , G11B5/702
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