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1.发明授权
公开(公告)号：US5759666A
公开(公告)日：1998-06-02
申请号：US576616
申请日：1995-12-21
IPC分类号： C08G18/40 , C08G18/08 , C08G18/28 , C08G18/42 , C08G18/44 , C08G18/62 , C08G18/65 , C08G18/66 , C09D175/04 , G11B5/702 , G11B5/73 , G11B5/735 , B32B3/04
CPC分类号： C08G18/348 , C08G18/0814 , C08G18/0823 , C08G18/0833 , C08G18/284 , C08G18/2875 , C08G18/4277 , C08G18/44 , C08G18/62 , C08G18/6212 , C08G18/6229 , C08G18/6245 , C08G18/6283 , C08G18/6541 , C08G18/6659 , G11B5/7022 , G11B5/7027 , G11B5/735 , Y10T428/24207 , Y10T428/31551 , Y10T428/31609 , Y10T428/31855 , Y10T428/31928
摘要： The invention provides novel macromonomer and carboxyl functional polyurethanes having a high carboxyl content. The invention further provides dispersions, coatings and magnetic recording media comprising these polyurethanes, or blends or copolymers of these polyurethanes with quaternary ammonium compounds. The invention further provides novel dispersions, coatings and magnetic recording media comprising combinations of carboxyl functional polyurethanes having a high carboxyl content with quaternary ammonium polymers.
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2.发明授权
公开(公告)号：US5874502A
公开(公告)日：1999-02-23
申请号：US924046
申请日：1997-08-28
IPC分类号： C08G18/40 , C08G18/08 , C08G18/28 , C08G18/42 , C08G18/44 , C08G18/62 , C08G18/65 , C08G18/66 , C09D175/04 , G11B5/702 , G11B5/73 , G11B5/735 , C08F8/30
CPC分类号： C08G18/348 , C08G18/0814 , C08G18/0823 , C08G18/0833 , C08G18/284 , C08G18/2875 , C08G18/4277 , C08G18/44 , C08G18/62 , C08G18/6212 , C08G18/6229 , C08G18/6245 , C08G18/6283 , C08G18/6541 , C08G18/6659 , G11B5/7022 , G11B5/7027 , G11B5/735 , Y10T428/24207 , Y10T428/31551 , Y10T428/31609 , Y10T428/31855 , Y10T428/31928
摘要： The invention provides novel macromonomer and carboxyl functional polyurethanes having a high carboxyl content. The invention further provides dispersions, coatings and magnetic recording media comprising these polyurethanes, or blends or copolymers of these polyurethanes with quaternary ammonium compounds. The invention further provides novel dispersions, coatings and magnetic recording media comprising combinations of carboxyl functional polyurethanes having a high carboxyl content with quaternary ammonium polymers.
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公开(公告)号：US07051970B2
公开(公告)日：2006-05-30
申请号：US10879601
申请日：2004-06-29
申请人： Raul Andruet , Albena V. Blagev , Arne B. Boberg , Jerome D. Brown , Fred W. Livermore , Michael A. Mewes , Jason E. Moses , Christopher J. Zwettler
发明人： Raul Andruet , Albena V. Blagev , Arne B. Boberg , Jerome D. Brown , Fred W. Livermore , Michael A. Mewes , Jason E. Moses , Christopher J. Zwettler
IPC分类号： B65H23/04
CPC分类号： G11B15/60 , G11B23/047 , G11B23/107
摘要： A tape drive system is disclosed. The tape drive system includes at least one tape reel assembly, a storage tape, and at least one pack arm assembly. The tape reel assembly includes a hub defining a tape winding surface about which is wound the storage tape. The pack arm assembly is disposed adjacent the tape reel assembly and includes a pack arm and a pin. The pack arm defines a guide defining a pivot end and has at least one flexible flange cantilevered from a side of the guide. The pin is coupled to the tape drive system. In this regard, the pack arm is slidingly coupled to the pin and configured to follow the wound storage tape by moving axially relative to the hub and radially about the pivot end.
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公开(公告)号：US5512317A
公开(公告)日：1996-04-30
申请号：US366142
申请日：1995-01-09
申请人： Albena V. Blagev
发明人： Albena V. Blagev
CPC分类号： G11B5/70673
摘要： A doped magnetic iron oxide particle suitable for use in magnetic recording media, and methods of preparing the doped magnetic iron oxide particle, are disclosed. The doped magnetic iron oxide particle has the general formula:Co.sub.x Fe.sup.+2.sub.1-x Fe.sub.2.sup.+3 O.sub.4, wherein O
摘要翻译： 公开了适用于磁记录介质的掺杂的磁性氧化铁颗粒以及制备掺杂的磁性氧化铁颗粒的方法。 掺杂的磁性氧化铁颗粒具有以下通式：Co x Fe + 21-x Fe 2 + 3 O 4，其中O
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