利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

140 条记录 (耗时 0.013 秒)

    DEPOSITION SENSING METHOD AND APPARATUS
    71.
    发明授权
    DEPOSITION SENSING METHOD AND APPARATUS 失效
    方法和设备检测矿床

    公开(公告)号：EP0774108B1

    公开(公告)日：1998-09-16

    申请号：EP95924488.0

    申请日：1995-07-25

    申请人： BetzDearborn Inc

    发明人： MERCUSOT, Michel ,  DECLERCQ, Ghislain

    IPC分类号： G01G17/02 ,  G01G1/24 ,  G01G1/26 ,  D21H23/78

    CPC分类号： G01G3/1402 ,  G01G3/165

    摘要： A sensor for deposit build-up in plant, for example a paper-making installation, comprising a probe (30) mounted with respect to a mounting body (31) and including at least one strain gauge for measuring the flexural strain in a flexurally deformable body strained by imbalance in the probe in response to the combined mass of the probe and the deposit build-up thereon. The process of the invention envisages using the resulting signal for controlling the application of a deposit-controlling composition. An optional further sensor (88) enables detection of the nature of the deposition whose quantity is sensed by the strain gauge.

    WATER-SOLUBLE CATIONIC COPOLYMERS AND THEIR USE AS FLOCCULANTS AND DRAINAGE RETENTION AIDS
    75.
    发明公开
    WATER-SOLUBLE CATIONIC COPOLYMERS AND THEIR USE AS FLOCCULANTS AND DRAINAGE RETENTION AIDS 失效
    WASSSERLÖSLICHE阳离子共聚物及其作为排水和絮凝剂和挽留工具

    公开(公告)号：EP0821704A1

    公开(公告)日：1998-02-04

    申请号：EP96915317.0

    申请日：1996-04-09

    申请人： BetzDearborn Inc

    发明人： KUO, Lawrence, Lu ,  LEUNG, Roger, Yiming ,  WILLIAMS, Kenneth, Samuel

    IPC分类号： B01D21 ,  C02F1 ,  C08F8 ,  C08F220 ,  C08F226 ,  D21H17 ,  D21H21

    CPC分类号： C02F1/56 ,  C08F8/44 ,  C08F220/34 ,  C08F226/02 ,  C08F2810/20 ,  C08F8/12

    摘要： A water-soluble cationic copolymer comprising the reaction product of (I) and a cationic quaternary amine having formula (a), wherein Y is (b) and n is 1 to 5; R?1, R2, R3¿ are independently H or C¿1? to C3 alkyl, R?4, R5 and R6¿ are independently C¿1? to C3 alkyl, X is a halide, hydroxyl or C1-C3 alkylsulfate anion. A second water-solulble cationic copolymer having general formula (II), wherein Z represents (c), or residual groups of -CH2N?O(R4R5)CH¿2CH=CH2X-, or mixtures thereof, and n is 1 to 5; R?1, R2 and R3¿ are independently selected from the group consisting of H or C¿1? to C3 alkyl; R?4, R5 and R6¿ are independently C¿1? to C3 alkyl, and X is a halide, hydroxyl or alkylsulfate anion; and wherein x, y and q represent molar percents of monomeric units in the copolymer such that q is 1 to 99 mol %, and the molar ratio of x to y is from 0 to 10. The copolymers of this invention are useful as flocculating agents and as drainage/retention aids in pulp and papermaking operations.