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327 条记录 (耗时 0.019 秒)

    A METHOD FOR PREVENTING OR RETARDING THE FORMATION OF GAS HYDRATES
    1.
    发明公开
    A METHOD FOR PREVENTING OR RETARDING THE FORMATION OF GAS HYDRATES 无效
    的一种方法，以防止或气体水合物的抑制

    公开(公告)号：EP0946470A1

    公开(公告)日：1999-10-06

    申请号：EP97910068.0

    申请日：1997-10-06

    申请人： ISP INVESTMENTS INC.

    发明人： COHEN, Jeffrey, M. ,  WOLF, Philip, F. ,  YOUNG, William, D.

    IPC分类号： C07C7 ,  C07C9 ,  C09K8 ,  C10L1 ,  C10L3

    CPC分类号： C10L3/00 ,  C09K8/52 ,  C10L1/143 ,  C10L1/1824 ,  C10L1/1852 ,  C10L1/2368 ,  C10L3/06

    摘要： A composition for preventing or retarding the formation of gas hydrates or for reducing the tendency of gas hydrates to agglomerate, during the transport of a fluid comprising water and a hydrocarbon, through a conduit, comprising, (a) a polymer or copolymer selected from a terpolymer of vinyl pyrrolidone, vinyl caprolactam and an ammonium derivative monomer having from 6 to 12 carbon atoms, selected from the group consisting of dialkyl aminoalkyl methacrylamide, dialkyl dialkenyl ammonium halide and a dialkylamino alkyl acrylate or methacrylate, a copolymer of vinyl pyrrolidone and vinyl caprolactam, and a homopolymer of vinyl caprolactam, and (b) an alcohol containing three to five carbon atoms and one hydroxy group, or a low molecular weight glycol ether containing an alkoxy group having at least 3 carbon atoms.

    INTERFEROMETRIC MEASUREMENT OF TORIC SURFACES AT GRAZING INCIDENCE
    3.
    发明公开
    INTERFEROMETRIC MEASUREMENT OF TORIC SURFACES AT GRAZING INCIDENCE 失效
    复曲面的干涉测量随入射角的倾斜角

    公开(公告)号：EP0932815A1

    公开(公告)日：1999-08-04

    申请号：EP97945530.0

    申请日：1997-10-03

    申请人： TROPEL CORPORATION

    发明人： BRUNING, John, H.

    IPC分类号： G01B9 ,  G01B11

    CPC分类号： G01B9/02072 ,  G01B9/02022 ,  G01B11/2441 ,  G01B11/255

    摘要： Toric surfaces are mounted on a transparent support plate and measured at grazing incidence using a pair of leading and following diffractive optics for diffracting a test beam with respect to a reference beam. The leading diffractive optic diffracts rays of the test beam through various diffraction angles so that after passing through the transparent support plate, the rays strike the toric surface at a constant grazing angle. The following diffractive optic further diffracts the rays of the test beam through other diffraction angles into realignment with the reference beam.

    INTERFEROMETER FOR MEASURING THICKNESS VARIATIONS OF SEMICONDUCTOR WAFERS
    6.
    发明公开
    INTERFEROMETER FOR MEASURING THICKNESS VARIATIONS OF SEMICONDUCTOR WAFERS 失效
    干涉半导体衬底厚度变化的测量

    公开(公告)号：EP0902874A1

    公开(公告)日：1999-03-24

    申请号：EP97927809.0

    申请日：1997-05-30

    申请人： TROPEL CORPORATION

    发明人： KULAWIEC, Andrew, W.

    IPC分类号： G01B11

    CPC分类号： G01B11/06 ,  G01B11/0675 ,  G01B11/306

    摘要： Thickness variations of semiconductor wafers are measured by interfering two beams of infrared light that are relatively modified by reflections from opposite side surfaces of the wafers. Non-null interferometric measurements are made by illuminating the wafers with diverging beams and subtracting errors caused by varying angles of incidence. Null interferometric measurements are made of both thickness variations and flatness. Infrared light, which can transmit through the wafers, is used for measuring thickness variations; and visible light, which cannot transmit through the wafers, is used for simultaneously measuring flatness.

    PROCESSLESS DIACETYLENIC SALT FILMS CAPABLE OF DEVELOPING A BLACK IMAGE
    7.
    发明公开
    PROCESSLESS DIACETYLENIC SALT FILMS CAPABLE OF DEVELOPING A BLACK IMAGE 失效
    过程中游离二炔薄膜盐用于黑色图像的显影

    公开(公告)号：EP0900409A1

    公开(公告)日：1999-03-10

    申请号：EP97916931.0

    申请日：1997-03-07

    申请人： ISP INVESTMENTS INC.

    发明人： LEWIS, David, F. ,  VARMA, Sangya, S.

    IPC分类号： C07C57 ,  C08K5 ,  C08L101 ,  G03C1 ,  G03F7

    CPC分类号： C07C57/24 ,  C07C57/18 ,  G03C1/73 ,  G03F7/025

    摘要： This invention relates to a mixture of imageable polyacetylenic compounds which have similar photosensitivities and which are visually imageable in complementary colors combinable to provide a black image, which mixture contains at least one polyacetylenic metal salt which produces a color, preferably a metal salt of a diacetylene C6 to C48 mono- or dicarboxylic acid, which is complementary to a color produced by another polyacetylenic metal salt or non-metallic polyacetylenic compound contained in the mixture or in an another integral color forming layer. The invention also pertains to the use of said mixture and the manner of its preparation.