Magnetic recording medium comprising a polar group containing resin or
compound and a methyl iso ester lubricant prepared from a methyl iso
acid or methyl iso alcohol or both
    62.
    发明授权
    Magnetic recording medium comprising a polar group containing resin or compound and a methyl iso ester lubricant prepared from a methyl iso acid or methyl iso alcohol or both 失效
    包含含有极性基团的树脂或化合物的磁记录介质和由甲基异酸或甲基异丙醇或两者制备的甲基异酯润滑剂

    公开(公告)号:US5061564A

    公开(公告)日:1991-10-29

    申请号:US382934

    申请日:1989-07-21

    IPC分类号: G11B5/71 G11B5/72

    摘要: A magnetic recording medium is disclosed, which comprises a non-magnetic support having provided thereon a magnetic layer mainly composed of a ferromagnetic powder and a binder resin comprising (i) a polymer having at least one polar group selected from --SO.sub.3 M.sup.1, --OSO.sub.3 M.sup.1, --COOM.sup.1, ##STR1## wherein M.sup.1 represents a hydrogen atom, Li, Na or NR.sub.4 (wherein R represents a hydrogen atom, an alkyl group, an alkenyl group, or an alkanol group), and M.sup.2 represents a hydrogen atom, Li, Na, an alkyl group, or NR.sub.4 (wherein R has the same significance as defined above); or (ii) a compound having at least one polar group selected from --SO.sub.3 M.sup.3, --COOM.sup.3, and --PO.sub.3 (M.sup.3).sub.2 (wherein M.sup.3 represents a hydrogen atom, an alkali metal, or an ammonium group) and containing at least one carbon-carbon unsaturated bond in the molecule, said magnetic layer containing at least one ester compound represented by following formula (I), (II), or (III), and when the binder resin comprises the compound (ii), the magnetic layer is irradiated by radiations: ##STR2## wherein R.sup.1 represents a straight chain or branched alkyl group having from 7 to 29 carbon atoms or a straight chain or branched alkenyl group having from 7 to 29 carbon atoms; l, k, m, and n represents an integer; l and n each is at least 2, and the sum of n and m and the sum of k and l are from 7 to 33.

    摘要翻译: 公开了一种磁记录介质,其包括其上设置有主要由铁磁粉末和粘合剂树脂构成的磁性层的非磁性载体,所述磁性层包含(i)具有至少一个选自-SO 3 M 1,-OSO 3 M 1, -COOM1,其中M1表示氢原子,Li,Na或NR4(其中R表示氢原子,烷基,烯基或链烷醇基),M2表示氢原子,Li,Na ,烷基或NR4(其中R具有与上述相同的含义); 或(ii)具有选自-SO 3 M 3,-COOM 3和-PO 3(M3)2中的至少一个极性基团的化合物(其中,M3表示氢原子,碱金属或铵基),并且含有至少一个碳 所述磁性层含有至少一种由下式(I),(II)或(III)表示的酯化合物,并且当粘合剂树脂包含化合物(ii)时,磁性层为 (I)其中R1表示具有7至29个碳原子的直链或支链烷基或具有7个碳原子的直链或支链烯基 至29个碳原子; l,k,m,n表示整数; l和n各自为至少2,n和m之和以及k和l之和为7至33。

    Magnetic recording medium using a fatty acid ester lubricant wherein the
alcohol component is branched at the number one carbon position
    63.
    发明授权
    Magnetic recording medium using a fatty acid ester lubricant wherein the alcohol component is branched at the number one carbon position 失效
    使用脂肪酸酯润滑剂的磁记录介质,其中醇组分在第一碳位分支

    公开(公告)号:US5030521A

    公开(公告)日:1991-07-09

    申请号:US183875

    申请日:1988-04-20

    CPC分类号: G11B5/71 G11B5/702

    摘要: A magnetic recording medium comprises a nonmagnetic support and a magnetic recording layer containing a ferromagnetic powder which is provided on the support. The magnetic recording layer contains a binder resin having a acid residue or a salt thereof and a fatty acid ester compound having the formula (I): ##STR1## wherein R is a hydrocarbon group having 11-21 carbon atoms, R.sup.1 is hydrogen atom or a hydrocarbon group having 1-3 carbon atoms, and R.sup.2 and R.sup.3 are the same or different and each is a hydrocarbon group having 1-8 carbon atoms. The total number of carbon atoms contained in R.sup.1, R.sup.2 and R.sup.3 being not less than 3 carbon atoms. Alternatively, the fatty acid ester can be coated on the magnetic layer.

    摘要翻译: 磁记录介质包括非磁性载体和含有设置在载体上的铁磁性粉末的磁记录层。 磁记录层含有具有酸残基或其盐的粘合剂树脂和具有式(I)的脂肪酸酯化合物:其中R是具有11-21个碳原子的烃基,R1是 氢原子或具有1-3个碳原子的烃基,R2和R3相同或不同,并且各自为具有1-8个碳原子的烃基。 R1,R2和R3中含有的碳原子总数不少于3个碳原子。 或者,脂肪酸酯可以涂覆在磁性层上。

    Magnetic recording medium
    64.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US4857402A

    公开(公告)日:1989-08-15

    申请号:US33704

    申请日:1987-04-03

    IPC分类号: G11B5/708 C09D5/23 G11B5/71

    摘要: A magnetic recording medium comprising a non-magnetic support having provided thereon a magnetic layer containing ferromagnetic particles and a binder, wherein the magnetic layer contains at least one lubricating agent selected from the group consisting of a salt of a sulfonic acid and a salt of sulfuric acid ester.

    摘要翻译: 一种磁记录介质,包括在其上设置有包含铁磁颗粒和粘合剂的磁性层的非磁性载体,其中所述磁性层含有至少一种选自磺酸盐和硫酸盐的润滑剂 酸酯。

    Magnetic recording medium
    65.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US4847156A

    公开(公告)日:1989-07-11

    申请号:US110401

    申请日:1987-10-20

    IPC分类号: G11B5/702

    摘要: A magnetic recording medium comprising a non-magnetic support having thereon a magnetic layer containing (a) ferromagnetic particles, (b) a binder containing at least one resin substituted with at least one polar group selected from an --SO.sub.3 M group, a --COOM group, an --OSO.sub.3 M group, an ##STR1## group and a ##STR2## group, wherein M represents H, Li, Na or K and M' represents H, Li, Na, K or an alkyl group, and (c) at least one fatty acid lubricating agent comprising at least one fatty acid derivative represented by formula (I): ##STR3## in which R represents a hydrocarbon group having from 11 to 21 carbon atoms, X represents hydrogen or a methyl group, R' represents a hydrocarbon group having from 1 to 8 carbon atoms and n is an integer of from 2 to 20.

    摘要翻译: 一种磁记录介质,包括其上具有磁性层的非磁性载体,所述磁性层含有(a)铁磁颗粒,(b)含有至少一种被至少一个选自-SO 3 M基团,-COOM基团的极性基团取代的树脂的粘合剂 ,-OSO3M基团,基团和基团,其中M表示H,Li,Na或K,M'表示H,Li,Na,K或烷基,(c)至少 一种脂肪酸润滑剂,其包含至少一种式(I)表示的脂肪酸衍生物:其中R表示具有11至21个碳原子的烃基,X表示氢或甲基,R' 表示碳原子数为1〜8的烃基,n为2〜20的整数。

    Magnetic recording medium
    67.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US4654258A

    公开(公告)日:1987-03-31

    申请号:US826055

    申请日:1986-02-04

    摘要: A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a magnetic layer containing ferromagnetic particles, a binder, non-magnetic particles, and lubricating agents, wherein said magnetic layer contains (i) carbon black (A) having an average particle size of 25 m.mu. or less and a BET specific surface area of from 150 to 250 m.sup.2 /g and carbon black (B) having an average particle size of from 10 to 30 m.mu. and a BET specific surface area of 700 m.sup.2 /g or more, and (ii) a fatty acid ester and a fatty acid amide in a total amount of 7 wt % or more based on the weight of the ferromagnetic particles.

    摘要翻译: 描述了一种磁记录介质,其包括在其上设置有包含铁磁颗粒的磁性层,粘合剂,非磁性颗粒和润滑剂的非磁性载体,其中所述磁性层包含(i)具有 平均粒径为25μm以下,BET比表面积为150〜250m 2 / g,平均粒径为10〜30μm的炭黑(B),BET比表面积为700m 2 / g以上,和(ii)总计为7重量%以上的脂肪酸酯和脂肪酸酰胺,以铁磁颗粒的重量计。

    Fibrous crystalline potassium titanate and processes for preparing
fibrous potassium titanates
    68.
    发明授权
    Fibrous crystalline potassium titanate and processes for preparing fibrous potassium titanates 失效
    纤维状结晶钛酸钾和制备纤维状钛酸钾的方法

    公开(公告)号:US4179496A

    公开(公告)日:1979-12-18

    申请号:US826534

    申请日:1977-08-22

    IPC分类号: C01G23/00

    摘要: A novel noncrystalline fibrous potassium titanate and a process for preparing said titanate fiber by calcination of a mixture of potassium compound(s) and titanium compound(s) at a temperature of from 800.degree. C. to the melting point of the mixture to obtain whiskers formed on the surface thereof; and an improved process for preparing fibrous potassium hexatitanate which comprises calcining hydrated fibrous potassium titanate at a temperature of 500.degree. to 900.degree. C. or which comprises kneading a mixture of potassium compound(s) and titanium compound(s), and calcining the thus kneaded mixture at a temperature of 1150.degree. to 1300.degree. C. to obtain fibers from the inside of the bulk of the calcined mixture are described.

    摘要翻译: 一种新型非晶态纤维状钛酸钾,以及通过在800℃的温度下将钾化合物和钛化合物的混合物煅烧至混合物的熔点而制备所述钛酸酯纤维的方法,以获得晶须 形成在其表面上; 以及制备纤维状六钛酸钾的改进方法,其包括在500-900℃的温度下煅烧水合的纤维状钛酸钾,或包括捏合钾化合物和钛化合物的混合物,并煅烧由此 在1150〜1300℃的温度下捏合混合物,从煅烧混合物的本体内部获得纤维。

    Alumina-chrome refractory composition
    69.
    发明授权
    Alumina-chrome refractory composition 失效
    氧化铝铬耐火组合物

    公开(公告)号:US4039344A

    公开(公告)日:1977-08-02

    申请号:US660407

    申请日:1976-02-23

    摘要: An alumina-chrome refractory composition comprises 30-60% by weight of alumina-silica type material containing 50-95% by weight of alumina with the major part in coarse particle size, and 70-40% by weight of chrome type material with the major part in fine particle size. In a modification, the alumina-chrome refractory composition comprises 70-99% by weight of a mix consisting of the alumina-silica type material and chrome type material in the above percentages, and 1-30% by weight of at least one of the materials selected from the group consisting of alumina, zircon, zirconia, magnesia, spinel, clay, silicon carbide and titanium oxide in fine particle size ranges.

    摘要翻译: 氧化铝 - 铬耐火组合物包含30-60重量%的氧化铝 - 二氧化硅型材料,其含有主要部分为粗颗粒的50-95重量%的氧化铝和70-40重量%的铬型材料,其中 主要部分细粒度。 在一个变型中,氧化铝 - 铬耐火材料组合物包含按重量百分比计的由氧化铝 - 二氧化硅型材料和铬型材料组成的混合物的70-99%重量,以及1-30%重量的至少一种 材料选自氧化铝,锆石,氧化锆,氧化镁,尖晶石,粘土,碳化硅和氧化钛,粒度范围很广。