METHOD FOR PRODUCING OPTICALLY ACTIVE a-IONONE
    41.
    发明申请
    METHOD FOR PRODUCING OPTICALLY ACTIVE a-IONONE 有权
    用于生产光学活性α-离子的方法

    公开(公告)号:US20110118500A1

    公开(公告)日:2011-05-19

    申请号:US13012199

    申请日:2011-01-24

    摘要: Provided that a method for inexpensively producing optically active α-ionone with a high yield and a high asymmetric yield and with good workability in a short process, and a perfume composition comprising the optically active α-ionone obtained by the aforementioned method. A method for producing optically active α-ionone, comprising allowing α-ionone as a mixture of optical isomers to react with an esterification agent, and hydrolyzing the obtained α-ionone enol ester; a method for producing optically active α-ionone comprising subjecting α-ionone as a mixture of optical isomers to an asymmetric reduction, allowing the obtained optically active α-ionol to react with an esterification agent to give an optically active α-ionol ester, hydrolyzing the obtained optically active α-ionol ester after purification as necessary, and then oxidizing the obtained optically active α-ionol; and a perfume composition comprising thus obtained optically active α-ionone.

    摘要翻译: 本发明提供了一种低成本地生产光学活性α-紫罗兰酮的方法,其具有高产率和高不对称产率,并且在短时间内具有良好的可加工性,以及包含通过上述方法获得的光学活性α-紫罗兰酮的香料组合物。 一种光学活性α-紫罗兰酮的制造方法,其特征在于,使作为旋光异构体的混合物的α-紫罗烯酮与酯化反应,水解得到的α-紫罗烯酮烯醇酯; 一种光学活性α-紫罗兰酮的制造方法,其特征在于,将α-紫罗烯酮作为光学异构体的混合物进行不对称还原,使得所得光学活性α-离子酚与酯化反应,得到光学活性α-离子醇酯,水解 根据需要纯化后得到的光学活性α-离子醇酯,然后氧化所得光学活性α-离子醇; 和包含这样得到的光学活性α-紫罗兰酮的香料组合物。

    Method for producing optically active α-ionone

    公开(公告)号:US07902404B2

    公开(公告)日:2011-03-08

    申请号:US11991966

    申请日:2006-09-13

    IPC分类号: C07C45/42

    摘要: Provided that a method for inexpensively producing optically active α-ionone with a high yield and a high asymmetric yield and with good workability in a short process, and a perfume composition comprising the optically active α-ionone obtained by the aforementioned method. A method for producing optically active α-ionone, comprising allowing α-ionone as a mixture of optical isomers to react with an esterification agent, and hydrolyzing the obtained α-ionone enol ester; a method for producing optically active α-ionone comprising subjecting α-ionone as a mixture of optical isomers to an asymmetric reduction, allowing the obtained optically active α-ionol to react with an esterification agent to give an optically active α-ionol ester, hydrolyzing the obtained optically active α-ionol ester after purification as necessary, and then oxidizing the obtained optically active α-ionol; and a perfume composition comprising thus obtained optically active α-ionone.

    METHOD FOR MANUFACTURING FLUID DYNAMIC BEARING DEVICE
    47.
    发明申请
    METHOD FOR MANUFACTURING FLUID DYNAMIC BEARING DEVICE 有权
    制造流体动力轴承装置的方法

    公开(公告)号:US20100132197A1

    公开(公告)日:2010-06-03

    申请号:US12595198

    申请日:2008-03-24

    IPC分类号: F16C43/02 F16C17/10 B21D53/10

    摘要: Easy and precise setting of a predetermined thrust bearing gap is made possible.An axial gap 13 having a dimension that is equal to the sum of two thrust bearing gaps is first provided between the flange part 2b of the shaft member 2 and the bearing member or bearing sleeve 8. The shaft member 2 and the bearing sleeve 8 are accommodated inside the housing 7 with this gap dimension 8 being kept, and the bearing sleeve 8 is secured to the housing 7.

    摘要翻译: 可以容易且精确地设定预定的推力轴承间隙。 首先,在轴构件2的凸缘部2b与轴承构件或轴承套筒8之间设置尺寸等于两个推力轴承间隙的总和的轴向间隙13.轴构件2和轴承套筒8是 容纳在壳体7内,保持该间隙尺寸8,并且轴承套筒8固定到壳体7。