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1. 发明授权

US4880692A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4880692A
公开(公告)日：1989-11-14
申请号：US171360
申请日：1988-03-21
申请人： Katsumi Ryoke , Masatoshi Takahashi , Akihiro Hashimoto , Tsutomu Okita , Kazuko Hanai
发明人： Katsumi Ryoke , Masatoshi Takahashi , Akihiro Hashimoto , Tsutomu Okita , Kazuko Hanai
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/73 , G11B5/735
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/265
摘要： A magnetic recording medium comprising a support having provided on one surface thereof a magnetic recording layer containing ferromagnetic particles dispersed in a binder and on the other surface thereof a backing layer, wherein said binder comprises a vinyl chloride/vinyl acetate copolymer reisn containing at least one group represented by formula (I) or (II): ##STR1## wherein X represents a --COO-- group, a --CONH-- group, or a --C.sub.6 H.sub.4 -- group; x represents an integer of from 1 to 10; R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, an alkyl group having from 1 to 10 carbon atoms, or an alkyl derivative having from 1 to 10 carbon atoms, or R.sub.1, R.sub.2, and R.sub.3 may be combined to each other to form a heterocycric ring; and Y.sup..crclbar. represents a halogen atom, ClO.sub.4.sup..crclbar., or HgI.sub.3.sup..crclbar. ; or Y.sup..crclbar. is bound to R.sub.2, R.sub.2 represents an alkylene group having from 1 to 10 carbon atoms, and Y.sup..crclbar. represents a --COO.sup..crclbar. group, an --SO.sub.3.sup..crclbar. group, or an --OSO.sub.3.sup..crclbar. group.
摘要翻译：一种磁记录介质，其包括在其一个表面上设置有包含分散在粘合剂中的铁磁颗粒的磁记录层和在其另一表面上的背衬层的支撑体，其中所述粘合剂包括含有至少一个的氯乙烯/乙酸乙烯酯共聚物（I）或（II）表示的基团：其中X表示-COO-基团，-CONH-基团或-C 6 H 4 - 基团; x表示1〜10的整数， R1，R2和R3各自表示氢原子，具有1至10个碳原子的烷基或具有1至10个碳原子的烷基衍生物，或者R1，R2和R3可以彼此结合形成杂环; Y（ - ）表示卤素原子，ClO 4（ - ）或HgI 3（ - ）; 或Y（ - ）与R 2结合，R 2表示具有1〜10个碳原子的亚烷基，Y（ - ）表示-COO（ - ）基，-SO 3（ - ）基或-OSO 3（ - ）组。

2. 发明授权

US4880693A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4880693A
公开(公告)日：1989-11-14
申请号：US170225
申请日：1988-03-21
申请人： Katsumi Ryoke , Masatoshi Takahashi , Akihiro Hashimoto , Tsutomu Okita , Takashi Yoneyama
发明人： Katsumi Ryoke , Masatoshi Takahashi , Akihiro Hashimoto , Tsutomu Okita , Takashi Yoneyama
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/73 , G11B5/735
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25
摘要： A magnetic recording medium comprising a support having provided on one surface thereof a magnetic recording layer and on the other surface thereof a backing layer containing non-magnetic particles dispersed in a binder, wherein said binder comprises a vinyl chloride/vinyl acetate copolymer resin containing at least one group represented by formula (I) or (II): ##STR1## wherein X represents a --COO-- group, a --CONH-- group, or a --C.sub.6 H.sub.4 -- group; n represents an integer of from 1 to 10; R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, an alkyl group having from 1 to 10 carbon atoms, or an alkyl derivative having from 1 to 10 carbon atoms, or R.sub.1, R.sub.2, and R.sub.3 may be combined to each other to form a heterocycric ring; and Y.sup..crclbar. represents a halogen atom, ClO.sub.4.sup..crclbar., or HgI.sub.3.sup..crclbar. ; or Y.sup..crclbar. is bound to R.sub.2, R.sub.2 represents an alkylene group having from 1 to 10 carbon atoms, and Y.sup..crclbar. represents a --COO.sup..crclbar. group, an --SO.sub.3.sup..crclbar. group, or an --OSO.sub.3.sup..crclbar. group.
摘要翻译：一种磁记录介质，包括在其一个表面上设置有磁记录层的支撑体，在另一表面上具有包含分散在粘合剂中的非磁性颗粒的背衬层，其中所述粘合剂包含氯乙烯/乙酸乙烯酯共聚物树脂，其含有（I）或（II）表示的至少一个基团：其中X表示-COO-基团，-CONH-基团或-C 6 H 4 - 基团; n表示1〜10的整数， R1，R2和R3各自表示氢原子，具有1至10个碳原子的烷基或具有1至10个碳原子的烷基衍生物，或者R1，R2和R3可以彼此结合形成杂环; Y（ - ）表示卤素原子，ClO 4（ - ）或HgI 3（ - ）; 或Y（ - ）与R 2结合，R 2表示具有1〜10个碳原子的亚烷基，Y（ - ）表示-COO（ - ）基，-SO 3（ - ）基或-OSO 3（ - ）组。

3. 发明授权

US4886703A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4886703A
公开(公告)日：1989-12-12
申请号：US183105
申请日：1988-04-19
申请人： Kazuo Hasumi , Hideomi Watanabe , Tsutomu Okita , Katsumi Ryoke , Hideaki Kosha
发明人： Kazuo Hasumi , Hideomi Watanabe , Tsutomu Okita , Katsumi Ryoke , Hideaki Kosha
IPC分类号： G11B5/702 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/64 , G11B5/73 , G11B5/735
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/257 , Y10T428/265 , Y10T428/30
摘要： A magnetic recording medium comprising a support having provided on one surface thereof a magnetic layer comprising a binder and ferromagnetic particles dispersed therein, and on the opposite surface thereof a backing layer comprising a binder and non-magnetic particles dispersed therein, wherein at least one of the binders comprises a vinyl chloride copolymer resin having a vinyl chloride unit content of about 70 wt % or more based on the total amount of the binder, a nitrogen content of about from 0.01 to 1 wt % based on the total amount of the binder, and a polymerization degree of about from 250 to 700; and the non-magnetic particles comprises fine carbon particles having a DBP oil absorption of about 150 ml/100 g or more.
摘要翻译：一种磁记录介质，包括在其一个表面上设置有包含粘合剂和分散在其中的铁磁性颗粒的磁性层的支撑体，并且在其相对表面上具有包含粘合剂和分散在其中的非磁性颗粒的背衬层，其中至少一个粘合剂包含基于粘合剂总量为约70重量％以上的氯乙烯单元含量的氯乙烯共聚物树脂，相对于粘合剂的总量，氮含量为约0.01〜1重量％聚合度约为250〜700; 非磁性粒子包含DBP吸油量为150ml / 100g以上的细小碳粒子。

4. 发明授权

US5153063A Magnetic recording medium having a vinyl-chloride resin and a urethane resin binder system each of which resins contain three percent or less of a low molecular weight resin fraction 失效
$Magnetic recording medium having a vinyl-chloride resin and a urethane resin binder system each of which resins contain three percent or less of a low molecular weight resin fraction$
标题翻译：具有氯乙烯树脂和聚氨酯树脂粘合剂体系的磁记录介质，其中树脂含有3％或更少的低分子量树脂分数
公开(公告)号：US5153063A
公开(公告)日：1992-10-06
申请号：US752912
申请日：1991-08-28
申请人： Tsutomu Okita , Kazuko Hanai , Akihiro Matsufuji , Nobuo Aoki
发明人： Tsutomu Okita , Kazuko Hanai , Akihiro Matsufuji , Nobuo Aoki
IPC分类号： G11B5/702
CPC分类号： G11B5/7022 , Y10S428/90 , Y10T428/265 , Y10T428/3158 , Y10T428/31609
摘要： A magnetic recording medium comprising a non-magnetic support having provided thereon a magnetic layer comprising ferromagnetic fine powder uniformly dispersed in a binder, wherein the binder comprises at least one resin selected from the group consisting of a vinyl chloride resin and a urethane resin, said resin for the binder has a weight average molecular weight of about from 20,000 to 80,000 and contains a low molecular weight fraction having a weight average molecular weight of about 3,000 or less in an amount of about 3 wt. % or less based on the amount of the resin.
摘要翻译：一种磁记录介质，包括非磁性载体，其上设有包含均匀分散在粘合剂中的铁磁细粉末的磁性层，其中所述粘合剂包括选自氯乙烯树脂和聚氨酯树脂中的至少一种树脂，所述用于粘合剂的树脂具有约20,000至80,000的重均分子量，并且含有约3重量％的重均分子量为约3,000或更小的低分子量级分。基于树脂的量的％以下。

5. 发明授权

US4788103A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4788103A
公开(公告)日：1988-11-29
申请号：US39860
申请日：1987-04-20
申请人： Tsutomu Okita , Kazuko Hanai , Yasuyuki Yamada
发明人： Tsutomu Okita , Kazuko Hanai , Yasuyuki Yamada
IPC分类号： C08G18/08 , C09D5/23 , C09D175/00 , C09D175/06 , G11B5/702
CPC分类号： G11B5/7021 , C08G18/0819 , Y10S428/90 , Y10T428/256 , Y10T428/257 , Y10T428/31609
摘要： A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a magnetic layer containing ferromagnetic fine particles dispersed in a binder including a polyurethane resin containing (1) as a main polymer chain a polyester polyol containing an alcoholic and acid components comprising at least one of (A) at least one alcoholic component selected from alicyclic divalent alcohol and aromatic divalent alcohol in an amount of 50 mol % or more based on the total amount of alcoholic components or (B) at least one acid component selected from alicyclic dicarboxylic acid and aromatic dicarboxylic acid in an amount of 50 mol % or more based on the total amount of acid components, and (2) at least one polyisocyanate selected from tolylene diisocyanate, diphenyl-methane-4,4'-diisocyanate, isophrorone diisocyanate, dicyclohexylmethane-4,4'-diisocyanate, and p-phenylene diisocyanate in an amount of 5 mol % or more based on the total amount of all alcoholic components and all acid components, and further containing (3) a polar group selected from --SO.sub.3 M, --CO.sub.2 M, and --PO.sub.3 M.sub.2, wherein M represents an H, Na, or K atom, in an amount of from 0.03 to 2 wt % based on the total amount of the polyurethane resin.
摘要翻译：描述了一种磁记录介质，其包括非磁性载体，其上设置有包含分散在包含含有（1）主要聚合物链的聚氨酯树脂的粘合剂的粘合剂中的铁磁性细颗粒的磁性层，所述聚酯多元醇含有含有醇和酸组分的聚酯多元醇，（A）至少一种选自脂环族二元醇和芳族二价醇的至少一种醇成分，其量为基于醇组分总量的50mol％或更多，或（B）至少一种选自脂环族的酸成分二羧酸和芳族二羧酸的含量相对于酸成分总量为50摩尔％以上，（2）至少一种选自甲苯二异氰酸酯，二苯基甲烷-4,4'-二异氰酸酯，异佛尔酮二异氰酸酯，二环己基甲烷-4,4'-二异氰酸酯和对苯二异氰酸酯，相对于所有酒精组合物的总量为5摩尔％以上并且还含有（3）选自-SO 3 M，-CO 2 M和-PO 3 M 2的极性基团，其中M代表H，Na或K原子，其量为0.03至2重量％，基于对聚氨酯树脂的总量。

6. 发明授权

US5578376A Magnetic recording medium having a magnetic layer comprising a specified ferromagnetic metal powder and a specified polyurethane binder 失效
标题翻译：具有磁性层的磁性记录介质包括特定的铁磁金属粉末和特定的聚氨酯粘合剂
公开(公告)号：US5578376A
公开(公告)日：1996-11-26
申请号：US417959
申请日：1995-04-06
申请人： Hiroshi Hashimoto , Masatoshi Takahashi , Yuuichirou Murayama , Tsutomu Okita
发明人： Hiroshi Hashimoto , Masatoshi Takahashi , Yuuichirou Murayama , Tsutomu Okita
IPC分类号： C09D5/23 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/706
CPC分类号： G11B5/7022 , G11B5/70621 , Y10S428/90 , Y10T428/31609
摘要： A magnetic recording medium comprising a non-magnetic support having thereon a magnetic layer comprising ferromagnetic powder and a binder, the ferromagnetic powder comprising a ferromagnetic metal powder comprising Fe and having a crystal size of from 120 to 250 .ANG. and a Co content of from 5 to 40 atm %, and the binder comprises a polyurethane comprising a diol component and a polyisocyanate component, the diol component comprising a polyetherpolyol and a polyesterpolyol.
摘要翻译：一种磁记录介质，包括其上具有包含铁磁粉末和粘合剂的磁性层的非磁性载体，所述铁磁粉末包含Fe的铁磁性金属粉末，其晶体尺寸为120至250埃，Co含量为5 至40atm％，并且所述粘合剂包含包含二醇组分和多异氰酸酯组分的聚氨酯，所述二醇组分包含聚醚多元醇和聚酯多元醇。

7. 发明授权

US06191184B1 Radiation-setting composition containing (meth)acrylic copolymers containing acid groups 有权
标题翻译：含有酸基的（甲基）丙烯酸共聚物的辐射固化组合物
公开(公告)号：US06191184B1
公开(公告)日：2001-02-20
申请号：US09303568
申请日：1999-05-03
申请人： Nobuo Suzuki , Tsutomu Okita , Yoshihisa Masaki
发明人： Nobuo Suzuki , Tsutomu Okita , Yoshihisa Masaki
IPC分类号： C08F250
CPC分类号： C08F265/06 , G02F1/133345 , G02F1/13394 , C08F2/02
摘要： Radiation-setting compositions suitable for the formation of LCD spacers or protective layers which are excellent in photosetting properties (requiring no heat-setting) and development properties, have high adhesiveness to substrates and excellent mechanical characteristics, remain stable over a long storage time and show excellent working condition-dependency. Such a radiation-setting composition for the formation of LCD spacers or protective layers comprises a (meth)acrylic acid-based copolymer having an acid value of 30 to 200 and a glass transition temperature of −30 to 180° C., a (meth)acrylate-based compound obtained by copolymerizing a monomer having a specific structure with a monomer at least having an acidic group, a radiation-sensitive compound and a solvent.
摘要翻译：适用于形成具有优异的光固化性能（不需要热定型）和显影性能的LCD间隔物或保护层的辐射固化组合物，对基材的粘附性和优异的机械特性在长时间保存时保持稳定，并显示出这种用于形成LCD间隔物或保护层的辐射定型组合物包括酸值为30至200，玻璃化转变温度为-30至180°的（甲基）丙烯酸基共聚物 C.，通过使具有特定结构的单体与至少具有酸性基团的单体，辐射敏感性化合物和溶剂共聚获得的（甲基）丙烯酸酯类化合物。

8. 发明授权

US5908691A Magnetic recording medium having a lower layer containing a specified polyurethane binder 失效
标题翻译：具有含有特定聚氨酯粘合剂的下层的磁记录介质
公开(公告)号：US5908691A
公开(公告)日：1999-06-01
申请号：US772575
申请日：1996-12-26
申请人： Yuichiro Murayama , Masaki Satake , Hiroshi Hashimoto , Tsutomu Okita
发明人： Yuichiro Murayama , Masaki Satake , Hiroshi Hashimoto , Tsutomu Okita
IPC分类号： C09D5/23 , C09D175/04 , G11B5/702 , G11B5/738
CPC分类号： G11B5/738 , G11B5/7021 , Y10S428/90 , Y10T428/265 , Y10T428/31609
摘要： The present invention provides a magnetic recording medium having high durability and excellent electromagnetic transfer characteristics and having a lower coating layer, which contains a binder and has high dispersion property and durability. The magnetic recording medium comprises a lower coating layer where non-magnetic powder or ferromagnetic power is dispersed in a binder and an upper magnetic layer where ferromagnetic powder is dispersed in a binder, said two layers being placed on a non-magnetic support member, whereby the binder of the lower coating layer comprises polyurethane resin, which is a reaction product using diol and organic diisocyanate as major materials, the polyurethane resin contains short-chain diol having cyclic structure by 17 to 40 weight %, and the polyurethane resin contains long-chain diol, containing ether groups by 1.0 to 5.0 mmol/g to the entire polyurethane resin, by 10 to 50 weight %.
摘要翻译：本发明提供一种具有高耐久性和优异的电磁传递特性的磁记录介质，并具有包含粘合剂并具有高分散性和耐久性的下涂层。磁记录介质包括其中非磁性粉末或铁磁力分散在粘合剂中的下涂层和将铁磁性粉末分散在粘合剂中的上磁性层，所述两层位于非磁性支撑构件上，由此下涂层的粘合剂包含聚氨酯树脂，其是使用二醇和有机二异氰酸酯作为主要材料的反应产物，所述聚氨酯树脂包含具有17至40重量％的环状结构的短链二醇，并且所述聚氨酯树脂包含长链，链状二醇，含有醚基团，1.0〜5.0mmol / g，相对于整个聚氨酯树脂，为10〜50重量％。

9. 发明授权

US4980199A Process for producing a magnetic recording medium 失效
标题翻译：磁记录介质的制造方法
公开(公告)号：US4980199A
公开(公告)日：1990-12-25
申请号：US537725
申请日：1990-06-14
申请人： Tsutomu Okita , Yutaka Kakuishi
发明人： Tsutomu Okita , Yutaka Kakuishi
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/842
CPC分类号： G11B5/842 , G11B5/7022 , G11B5/7023 , Y10S428/90
摘要： A process for producing a magnetic recording medium is disclosed, comprising steps of (1) kneading ferromagnetic fine powders and binders with solvents, (2) optionally adding further the binders and the solvents to disperse the powders and (3) coating the resulting magnetic coating composition on a non-magnetic support, wherein the ferromagnetic fine powders have a crystallite size of not larger than 500 .ANG., the binders have at least one polar group selected from the group consisting of --SO.sub.3 M, --OSO.sub.3 M, --PO.sub.3 M.sub.2, --OPO.sub.3 M.sub.2 and --COOM (wherein M is hydrogen atom, an alkali metal or ammonium) and at least one epoxy group in the molecule and a step of adding a fatty acid having 12 to 26 carbon atoms is carried out after the dispersing step (2). Preferably, a step of crushing the ferromagnetic powders is additionally carried out before the kneading step (1).
摘要翻译：公开了一种制造磁记录介质的方法，包括以下步骤：（1）将铁磁性细粉末和粘结剂与溶剂混合，（2）任选地加入粘合剂和溶剂以分散粉末，和（3）涂覆所得磁性涂层组成在非磁性载体上，其中铁磁细粉末的微晶尺寸不大于500，粘合剂具有至少一个选自-SO 3 M，-OSO 3 M，-PO 3 M 2，-OPO 3 M 2和在分散步骤（2）之后进行-COOM（其中M是氢原子，碱金属或铵）和至少一个分子中的环氧基和加入具有12-26个碳原子的脂肪酸的步骤。优选地，在捏合步骤（1）之前另外进行粉碎铁磁粉末的步骤。

10. 发明授权

US4959263A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4959263A
公开(公告)日：1990-09-25
申请号：US195224
申请日：1988-05-18
申请人： Masashi Aonuma , Tsutomu Okita , Hiroshi Hashimoto , Hiroaki Araki , Kiyotaka Fukino , Kiyomi Ejiri
发明人： Masashi Aonuma , Tsutomu Okita , Hiroshi Hashimoto , Hiroaki Araki , Kiyotaka Fukino , Kiyomi Ejiri
IPC分类号： G11B5/702 , G11B5/712 , G11B5/714
CPC分类号： G11B5/7026 , G11B5/712 , G11B5/714 , Y10S428/90 , Y10T428/257
摘要： A magnetic recording medium is described, comprising a nonmagnetic support having thereon a magnetic layer containing a binder which is cross-linkable or polymerizable by radiation irradiation and ferromagnetic particles, the ferromagnetic particles being metal or metal alloy particles mainly comprising iron having a crystal size of 300 .ANG. or less, having an atomic ratio of oxygen atoms to iron atoms of from 1.6 to 3.0 on the surface of the particles, and the magnetic layer having been irradiated with radiation, and comprising a nonmagnetic support having thereon a magnetic layer containing a binder comprising thermoplastic resins, thermosetting resins, reactive type resins and mixtures thereof and ferromagnetic particles, said ferromagnetic particles being metal or metal alloy particles mainly comprising iron having a crystal size of 250 .ANG. or less, and having an atomic ratio of oxygen atoms to iron atoms of from 1.6 to 3.0 on the surface of said particles.
摘要翻译：描述了一种磁记录介质，其包括其上具有含有可通过辐射照射和铁磁性颗粒可交联或可聚合的粘合剂的磁性层的非磁性载体，所述铁磁颗粒是主要包含具有晶体尺寸的铁的金属或金属合金颗粒 300或更小，在颗粒表面上的氧原子与铁原子的原子比为1.6至3.0，并且已经辐照辐照的磁性层，并且包含其上具有含有粘合剂的磁性层的非磁性载体包括热塑性树脂，热固性树脂，反应型树脂及其混合物和铁磁颗粒，所述铁磁性颗粒是主要包含结晶尺寸为250或更小的铁并且具有氧原子与铁原子的原子比的金属或金属合金颗粒在所述颗粒的表面上为1.6至3.0。

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