公开(公告)号：US4637959A

公开(公告)日：1987-01-20

申请号：US663377

申请日：1984-10-22

申请人： Yoshinobu Ninomiya ,  Masashi Somezawa ,  Kiyokazu Oiyama

发明人： Yoshinobu Ninomiya ,  Masashi Somezawa ,  Kiyokazu Oiyama

IPC分类号： C08G18/08 ,  C08G18/38 ,  C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/00 ,  C09D175/02 ,  C09D175/04 ,  G11B5/702 ,  G11B5/72

CPC分类号： C08G18/0819 ,  C08G18/3889 ,  G11B5/7021 ,  Y10S428/90 ,  Y10T428/31609

摘要： A magnetic recording medium comprised of a non-magnetic substrate and a magnetic layer formed on one surface of the substrate and consisting essentially of a binder and magnetic powders. As the binder, a thermoplastic polyurethane-urea resin is employed, in which hydrophilic polar groups are introduced. The thermoplastic polyurethane-urea resin contains urethane and urea bonds in the molecule thereof and may be synthesized from a long-chain diol with a molecular weight of about 500 to 5000, a short-chain diol with a molecular weight of about 50 to 500, an organic diisocyanate and an organic diamine. Examples of the thus introduced hydrophilic polar groups are: ##STR1##

摘要翻译： 一种磁记录介质，包括非磁性基底和形成在基底的一个表面上并且基本上由粘合剂和磁性粉末组成的磁性层的磁性层。 作为粘合剂，使用引入亲水极性基团的热塑性聚氨酯 - 脲树脂。 热塑性聚氨酯 - 脲树脂在其分子中含有氨基甲酸酯和脲键，并且可以由分子量为约500至5000的长链二醇，分子量为约50至500的短链二醇合成， 有机二异氰酸酯和有机二胺。 由此引入的亲水极性基团的实例是：

公开(公告)号：US4634633A

公开(公告)日：1987-01-06

申请号：US678814

申请日：1984-12-06

申请人： Yoshinobu Ninomiya ,  Masashi Somezawa ,  Kiyokazu Oiyama

发明人： Yoshinobu Ninomiya ,  Masashi Somezawa ,  Kiyokazu Oiyama

IPC分类号： C08G18/08 ,  C08G18/67 ,  C08G18/81 ,  G11B5/702 ,  G11B5/72

CPC分类号： G11B5/7021 ,  C08G18/0819 ,  C08G18/671 ,  C08G18/675 ,  C08G18/8158 ,  Y10S428/90 ,  Y10T428/31609

摘要： A magnetic recording medium has a magnetic layer consisting essentially of a binder and magnetic particles on one surface of a non-magnetic substrate. The thermoplastic polyurethane-urea resin in which unsaturated bonds sensitive to radiation are introduced is used as the binder.The thermoplastic polyurethane-urea resin in which the radiation-sensitive unsaturated bonds are introduced has both urethane and urea bonds in the molecular structure thereof. It is synthesized from long chain diol with a molecular weight of approximately 500 to 5000, a short chain diol with a molecular weight of approximately 50 to 500, an organic diisocyanate, an organic diamine, and a compound containing radiation-sensitive unsaturated double bonds, and cured by radiation.The thermoplastic polyurethane-urea resin in which not only the radiation-sensitive double bonds but also hydrophilic polar groups are introduced may also be used as the binder. These hydrophilic polar groups may for example include --SO.sub.3 M, --OSO.sub.3 M, --COOM, and ##STR1##

摘要翻译： 磁记录介质具有基本由粘合剂组成的磁性层和在非磁性基底的一个表面上的磁性颗粒。 引入对辐射敏感的不饱和键的热塑性聚氨酯 - 脲树脂用作粘合剂。 其中引入辐射敏感性不饱和键的热塑性聚氨酯 - 脲树脂在其分子结构中具有氨基甲酸酯和脲键。 分子量约为500〜5000的长链二醇，分子量约为50〜500的短链二醇，有机二异氰酸酯，有机二胺，含有辐射敏感性不饱和双键的化合物， 并通过辐射治愈。 也可以使用其中不仅引入了辐射敏感双键，而且还引入亲水极性基团的热塑性聚氨酯 - 脲树脂作为粘合剂。 这些亲水极性基团可以例如包括-SO 3 M，-OSO 3 M，-COOM和

公开(公告)号：US4734480A

公开(公告)日：1988-03-29

申请号：US60471

申请日：1987-06-11

申请人： Nobukazu Kotera ,  Yasuo Yoshinaka ,  Shinpei Yamamoto ,  Hideyuki Ohashi ,  Yoshinobu Ninomiya ,  Kiyokazu Oiyama

发明人： Nobukazu Kotera ,  Yasuo Yoshinaka ,  Shinpei Yamamoto ,  Hideyuki Ohashi ,  Yoshinobu Ninomiya ,  Kiyokazu Oiyama

IPC分类号： C08G18/10 ,  C08G18/46 ,  C08G18/67 ,  G11B5/702 ,  C08G18/38

CPC分类号： C08G18/672 ,  C08G18/10 ,  C08G18/4676 ,  C08G18/675 ,  G11B5/7026

摘要： A radiation curable resin which is a polyurethane acrylate having (meth)acryloyloxy groups at the terminal end of the molecule and in the molecular chain thereof, and containing metal sulfonate groups in the molecule in a ratio of 3.0 to 1,500 equivalent/10.sup.6 g of the resin, said polyurethane acrylate being obtained by reaction of(1) a copolyester having hydroxyl groups at both terminal ends of the molecule and containing metal sulfonate groups therein,(2) a diisocyanate,(3) a compound (A) having at least one (meth)acryloyloxy group and two hydroxyl groups,(4) a compound (B) having at least one (meth)acryloyloxy group and one hydroxyl group, and optionally(5) a polyol other than the above (1) or (3). the radiation curable resin containing a compound (C) having at least one carboxylic acid group and two hydroxyl groups in addition to the above components (1) to (5) is also disclosed.

公开(公告)号：US4734330A

公开(公告)日：1988-03-29

申请号：US881285

申请日：1986-07-02

申请人： Kiyokazu Oiyama ,  Yoshinobu Ninomiya ,  Hiroshi Yoshioka ,  Ichiro Ono

发明人： Kiyokazu Oiyama ,  Yoshinobu Ninomiya ,  Hiroshi Yoshioka ,  Ichiro Ono

IPC分类号： C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/00 ,  C09D175/04 ,  G11B5/70 ,  G11B5/702 ,  G11B5/708

CPC分类号： G11B5/7013 ,  G11B5/7023 ,  Y10S428/90 ,  Y10T428/31504 ,  Y10T428/31935

摘要： Described is a magnetic recording medium comprising a non-magnetic substrate and a magnetic layer formed thereon composed mainly of magnetic powder and a binder, said binder containing a compound represented by a following formula: ##STR1## wherein X represents tertiary amine sulfonate or tertiary amine sulfuric ester, Y represents a monomer having vinyl group which is copolymerizable with vinyl chloride and i, j, k represent polymerization degrees.

摘要翻译： 描述了一种磁记录介质，其包括非磁性基底和主要由磁性粉末和粘合剂形成的磁性层，所述粘合剂含有由下式表示的化合物：其中X表示叔胺磺酸盐或叔胺 硫酸酯，Y表示可与氯乙烯共聚的具有乙烯基的单体，i，j，k表示聚合度。