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62 条记录 (耗时 0.029 秒)

    CORROSION INHIBITORS FOR CLEAR, CALCIUM-FREE HIGH DENSITY FLUIDS.
    33.
    发明公开
    CORROSION INHIBITORS FOR CLEAR, CALCIUM-FREE HIGH DENSITY FLUIDS. 失效
    缓蚀剂CLEAR含钙高密度流体。

    公开(公告)号：EP0290486A4

    公开(公告)日：1988-12-22

    申请号：EP87906346

    申请日：1987-09-08

    申请人： GREAT LAKES CHEMICAL CORP

    发明人： DADGAR AHMAD

    IPC分类号： C09K8/06 ,  E21B41/02 ,  E21B43/00

    CPC分类号： C09K8/06 ,  E21B41/02 ,  Y10S507/925 ,  Y10S507/939

    摘要： Corrosion inhibitors which can be used with calcium-free drilling, completion and workover fluids in carbonate or sulfate containing wells. More particularly, the invention relates to the use of sodium, ammonium and/or calcium thiocyanate alone, or in combination with specific aldose group antioxidants, as corrosion inhibitors. Aldose group antioxidants include arabinose, ascorbic acid, isoascorbic acid, gluconic acid, alkali metal, and alkaline earth or other metal ascorbates, isoascorbates and gluconates and mixtures thereof. Additionally, ammonium thioglycolate may be incorporated as a further corrosion inhibitor.

    CONTINUOUS BROMINATION PROCESS AND PRODUCTS THEREOF
    37.
    发明公开
    CONTINUOUS BROMINATION PROCESS AND PRODUCTS THEREOF 失效
    连续溴化和制品生产的商品

    公开(公告)号：EP0784648A4

    公开(公告)日：2000-02-02

    申请号：EP95931696

    申请日：1995-09-01

    申请人： GREAT LAKES CHEMICAL CORP

    发明人： MACK ARTHUR G

    IPC分类号： C07B39/00 ,  C07C17/12 ,  C07C25/18 ,  C07C41/22 ,  C07C43/29 ,  C08K5/03 ,  C08K5/06 ,  C08L101/00 ,  C09K21/08 ,  C08K5/04

    CPC分类号： C07C41/22 ,  C07B39/00 ,  C07C17/12 ,  C07C25/18 ,  C07C43/29

    摘要： A preferred process for producing a brominated, non-fused aromatic composition involves a continuous bromination in a continuous, mixed reactor such as a continuous stirred tank reactor. Bromine and the aromatic substrate, and optionaly a bromination catalyst, are continuously fed to a reaction zone to form a reaction mixture, and the reaction mixture is continuously withdrawn from the reaction zone after an established average residence time. Bromination levels can be readily controlled by controlling the average residence time of the reaction mixture within the reaction zone. Preferred continuous processes also provide mixed, brominated compositions having product distributions which are substantially broader than that obtained by batch brominations conducted to achieve the same level of bromination. Preferred products thus have broad melting ranges which are advantageous in compounding operations.

    ALKYL END-CAPPED, HALOGENATED POLYETHERS
    39.
    发明公开
    ALKYL END-CAPPED, HALOGENATED POLYETHERS 失效
    HALOGENIERTE，MIT ALKYL-ENDGRUPPEN VERSEHENE，聚醚

    公开(公告)号：EP0824566A4

    公开(公告)日：1998-09-02

    申请号：EP96915573

    申请日：1996-05-08

    申请人： GREAT LAKES CHEMICAL CORP

    发明人： MACK ARTHUR G ,  TERMINE ENRICO J

    IPC分类号： C07C43/225 ,  C08G65/40 ,  C08G65/48 ,  C08K5/06

    CPC分类号： C08G65/4006 ,  C07C43/225 ,  C08G65/48

    摘要： Fire-retardant tetrabromobisphenol oligomers of formula (1), wherein R or R' is a branched or unbranched alkyl radical; Xi is a halogen, preferably Br, wherein i is an integer from 0 to 4; G is a connecting group selected from the group consisting of a single bond, a branched or unbranched divalent aliphatic hydrocarbon radical of from 1 to 10 carbon atoms, oxygen, sulfur, sulfoxide, SO2, or oxygen-, silicon-, sulfur- or nitrogen-containing aliphatic hydrocarbon radicals such as -OR"O-, -OR"OR"O-, -SR"S-, -SR"SR"S-, -OSiR2O-, -OSiR2OSiR2O-, O2C-R"-CO2, CO2-R"-O2C, SO-R"-SO-, SO2-R"-SO2, wherein R" is a divalent aliphatic hydrocarbon radical; A is a branched or unbranched alkyl diradical; and n is 0 or a positive integer. The fire-retardant tetrabromobisphenol oligomers of the present invention are advantageous due to their non-reactive end-caps.

    摘要翻译： 式（1）的阻燃四溴双酚低聚物，其中R或R'是支链或无支链烷基; X 1是卤素，优选Br，其中i是0至4的整数; G是选自单键，1-10个碳原子的支链或非支链二价脂族烃基，氧，硫，亚砜，SO 2或氧 - ，硅 - ，硫 - 或氮的连接基团 - “OR”O - ， - SR“-S - ， - SR”SR“ - ， - OSiR2O - ， - OSiR2OSiR2O - ，O2C-R”-CO2 - CO-R“-O2C，SO-R”-SO-，SO2-R“-SO2，其中R”为二价脂族烃基; A为支链或无支链烷基二价基团;并且n为0或正整数。 由于它们的非反应性封端，本发明的阻燃四溴双酚低聚物是有利的。