SYNTHETIC GRINDING STONE
    8.
    发明申请
    SYNTHETIC GRINDING STONE 有权
    合成磨石

    公开(公告)号:US20100037530A1

    公开(公告)日:2010-02-18

    申请号:US12450366

    申请日:2008-03-25

    IPC分类号: B24D3/28 B24D3/00

    摘要: Disclosed is a synthetic grinding stone used for polishing of silicon wafer, which is composed of a structure comprising cerium oxide fine particles as abrasive grain, a resin as a binder, a salt as a filler and a nano diamond as an additive. This synthetic grinding stone is characterized in that the purity of the cerium oxide is not less than 60% by weight, the content of the salt as a filler is not less than 1% but not more than 20%, the volume content of the nano diamond as an additive is not less than 0.1% but less than 20% relative to the total volume of the structure, and the porosity as the volume fraction relative to the total volume of the structure is less than 30%.

    摘要翻译: 公开了一种用于抛光硅晶片的合成研磨石,其由包含作为磨粒的氧化铈微粒,作为粘合剂的树脂,作为填料的盐和作为添加剂的纳米金刚石的结构组成。 该合成研磨石的特征在于,氧化铈的纯度为60重量%以上,作为填料的盐的含量为1%以上20%以下,纳米粒子的体积含量 作为添加剂的金刚石相对于该结构体的总体积不小于0.1%但小于20%,相对于该结构体积的体积分数的孔隙率小于30%。

    Antibiotic, Spicamycin
    9.
    发明授权
    Antibiotic, Spicamycin 失效
    抗生素,Spicamycin

    公开(公告)号:US4565781A

    公开(公告)日:1986-01-21

    申请号:US583108

    申请日:1984-02-24

    CPC分类号: C07H17/02

    摘要: An antibiotic, Spicamycin, having the physicochemical properties set forth below is produced by aerobically cultivating a Spicamycin-producing Streptomyces strain in a suitable culture medium, and recovering from the culture the antibiotic, Spicamycin.(1) Color and properties: Weakly acidic white powder(2) Melting point: 215.degree. to 220.degree. C. (decomposed)(3) Specific rotatory power: [.alpha.].sub.D.sup.25 =+15.degree. (C: 0.15, in methanol)(4) Elementary analysis (Found): C: 57.4%, H: 8.3%; N: 15.7%, O: 18.6%(5) Ultraviolet absorption spectrum (maximum):______________________________________ CH.sub.3 OH 264 nm (E.sub.1cm.sup.1% 257) 0.01N NaOH + CH.sub.3 OH 272 nm (E.sub.1cm.sup.1% 226) 0.01N HCl + CH.sub.3 OH 273 nm (E.sub.1cm.sup.1% 258) ______________________________________ (6) Infrared absorption spectrum (as measured by the potassium bromide method): As shown in FIG. 2.(7) Solubility in Solvent: Soluble in basic water, dimethyl sulfoxide, methanol, ethanol, n-propanol, and n-butanol. Sparingly soluble in water, acetone, ethyl acetate, and chloroform. Insoluble in benzene, ethyl ether, and hexane.(8) Thin layer chromatography (using "Silica Gel 60F.sub.254 " plate supplied by Merck & Co., Inc.):______________________________________ Developing solvent Rf value ______________________________________ Chloroform:Methanol (1:1) 0.34 ______________________________________ (9) NMR spectrum (400 MHz, in deuteromethanol): As shown in FIG. 3.

    摘要翻译: 具有下述物理化学性质的抗生素Spicamycin通过在合适的培养基中有条不紊地培养产生Spicamycin的链霉菌菌株产生,并从培养物中回收抗生素Spicamycin。 (1)颜色和性质:弱酸性白色粉末(2)熔点:215〜220℃(分解)(3)比旋光度:αD25= + 15℃(甲醇中C:0.15) (4)元素分析(实测值):C:57.4%,H:8.3% N:15.7%,O:18.6%(5)紫外吸收光谱(最大):-CH 3 OH 264nm(E1cm1%257)-0.01N NaOH + CH3OH 272nm(E1cm1%226)-0.01N HCl + CH3OH 273nm E1cm1%258) - (6)红外吸收光谱(通过溴化钾法测定):如图1所示。 (7)溶剂中的溶解度:溶于碱性水,二甲基亚砜,甲醇,乙醇,正丙醇和正丁醇。 微溶于水,丙酮,乙酸乙酯和氯仿。 不溶于苯,乙醚和己烷。 (8)薄层色谱法(使用由Merck&Co.,Inc。提供的“Silica Gel 60F254”板):显影溶剂Rf值 - 氯仿:甲醇(1:1)0.34 - (9)NMR谱(400MHz, 在氘甲醇中): 3。