Electromagnetic steel sheet having excellent magnetic properties and production method thereof
    31.
    发明授权
    Electromagnetic steel sheet having excellent magnetic properties and production method thereof 有权
    磁性优异的电磁钢板及其制造方法

    公开(公告)号:US06416592B2

    公开(公告)日:2002-07-09

    申请号:US09779041

    申请日:2001-02-08

    CPC classification number: C21D8/1222 H01F1/16

    Abstract: Electromagnetic steel sheet having excellent magnetic properties and a texture gratly integrated in the {100} orientation, and an uncomplicated and low cost production method; with about a 15 &mgr;&OHgr;·cm or more specific resistivity, about a 2.0 or more {100} integration degree/{111} integration degree and about a 10 &mgr;m to 500 &mgr;m grain diameter; when about 0.1 to 3.5% by weight of Si is present, the {100} integration degree is about 10 or more; when about 0.2 to 1.2% by weight of P is present, the{100} integration degree is about 3 or more; by applying a large reduction ratio to a steel slab in the vicinity of the final stage of hot rolling, with the hot rolling finishing temperature controlled at about 750 to 1150° C., hot rolled steel having a texture highly integrated in the {100} orientation is economically produced.

    Abstract translation: 具有优良的磁性能和结合在{100} <001>取向的结构的电磁钢板,以及不复杂和低成本的生产方法; 具有大约15μmOMEGA.cm或更高的电阻率,约2.0或更多{100} <001>积分度/ {111} 积分度和约10μm至500μm的粒径; 当存在约0.1至3.5重量%的Si时,{100} <001>整合度为约10或更大; 当存在约0.2-1.2重量%的P时,{100} <001>整合度为约3或更大; 通过对热轧最后阶段附近的钢坯施加大的压下率,在热轧精轧温度控制在约750〜1150℃的条件下,具有高度集成在{100} <001>方向经济地生产。

    Processes for producing aromatic/aliphatic copolycarbonate
    32.
    发明授权
    Processes for producing aromatic/aliphatic copolycarbonate 有权
    制备芳香族/脂肪族共聚碳酸酯的方法

    公开(公告)号:US06265523B1

    公开(公告)日:2001-07-24

    申请号:US09323134

    申请日:1999-06-01

    CPC classification number: C08G64/30 C08G64/1608

    Abstract: Processes for producing an aromatic/aliphatic copolycarbonate which has excellent impact resistance, excellent heat resistance, a high Abbe's number, a low photoelastic coefficient, and an excellent color tone. The processes include those in which: an aromatic/aliphatic copolycarbonate having a nitrogen content of 9 ppm or lower is produced from an aliphatic dihydroxy compound having a nitrogen content of 10 ppm or lower; an aromatic/aliphatic copolycarbonate is produced from an aliphatic dihydroxy compound having an iron content of 1 ppm or lower; an aromatic/aliphatic copolycarbonate is produced from an aliphatic dihydroxy compound having a content of aldehyde groups and/or formyl groups of 100 ppm or lower; an aromatic/aliphatic copolycarbonate is produced by subjecting an aromatic dihydroxy compound and an aliphatic dihydroxy compound having a content of free chlorine of 5 ppm or lower to polycondensation with heating and melting; and an aromatic/aliphatic copolycarbonate is produced from an aliphatic dihydroxy compound which has a melt Hazen unit of 40 or smaller after having been maintained at 260° C. for 5 hours in the air.

    Abstract translation: 具有优异的耐冲击性,优异的耐热性,高的阿贝数,低光弹性系数和优异的色调的芳香族/脂肪族共聚碳酸酯的制造方法。 该方法包括:由氮含量为10ppm以下的脂肪族二羟基化合物制造氮含量为9ppm以下的芳香族/脂肪族共聚碳酸酯的方法; 由铁含量为1ppm以下的脂肪族二羟基化合物制造芳香族/脂肪族共聚碳酸酯, 由具有100ppm以下的醛基和/或甲酰基含量的脂肪族二羟基化合物制造芳香族/脂肪族共聚碳酸酯; 通过使芳族二羟基化合物和游离氯含量为5ppm以下的脂肪族二羟基化合物进行加热熔融缩聚来制造芳香族/脂肪族共聚碳酸酯, 芳香族/脂肪族共聚碳酸酯由脂肪族二羟基化合物制成,在空气中保持260℃,熔融Hazen单位为40以上。

    Titanosilicate catalyst particle
    38.
    发明授权
    Titanosilicate catalyst particle 失效
    钛硅酸盐催化剂颗粒

    公开(公告)号:US5683952A

    公开(公告)日:1997-11-04

    申请号:US767296

    申请日:1996-12-16

    Abstract: A titanosilicate catalyst and method for preparing the same, comprising primary titanosilicate particles which are combined with one another, wherein the titanosilicate catalyst comprises pores having a pore diameter of from 50 to 300 .ANG.. The inventive catalyst exhibits activity in a hydroxylation reaction of an aromatic compound, or an epoxidation reaction of an olefin, or an ammoximation reaction of a ketone using hydrogen peroxide as an oxidant.

    Abstract translation: 一种钛硅酸盐催化剂及其制备方法,包括彼此组合的原钛酸硅酸盐颗粒,其中钛硅酸盐催化剂包含孔径为50至300埃的范围的孔。 本发明的催化剂在芳族化合物的羟基化反应或烯烃的环氧化反应或使用过氧化氢作为氧化剂的酮的氨肟化反应中表现出活性。

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