Aqueous solution of a sodium salt of hedta
    8.
    发明申请
    Aqueous solution of a sodium salt of hedta 有权
    hedta的钠盐水溶液

    公开(公告)号:US20070015930A1

    公开(公告)日:2007-01-18

    申请号:US10563762

    申请日:2004-07-13

    IPC分类号: C07F15/02 C07C229/24

    摘要: The invention pertains to an aqueous solution of a sodium salt xNa+ yH+ of the chelating compound of formula I: wherein x=2.1−2.7, y=0.9−0.3, and x+y=3. The invention further pertains to a container comprising at least 0.5 kg of said aqueous solution and to a method of preparing an aqueous solution comprising at least 45 wt % of the sodium salt xNa+ yH+ of the chelating compound of formula I from Na3-HEDTA, comprising the steps of electrodialysing an aqueous solution containing less than 42 wt % of Na3-HEDTA using a bipolar membrane, thereby converting the trisodium salt solution to the solution of the sodium salt of formula I with x=2.1−2.7, y=0.9−0.3, and x+y=3.

    摘要翻译: 本发明涉及式I的螯合化合物的钠盐水溶液,其中x = 2.1-2.7,y = 0.9-0.3, x + y = 3。 本发明还涉及一种包含至少0.5kg所述水溶液的容器以及一种制备包含至少45wt%的钠盐x Na + 该方法包括以下步骤:使用含有少于42重量%的Na 3 -HEDTA的水溶液进行电渗析,步骤 由此将三钠盐溶液转化为式I的钠盐溶液,其中x = 2.1-2.7,y = 0.9-0.3,x + y = 3。

    Aqueous solution of a sodium salt of HEDTA
    9.
    发明授权
    Aqueous solution of a sodium salt of HEDTA 有权
    HEDTA钠盐水溶液

    公开(公告)号:US07211682B2

    公开(公告)日:2007-05-01

    申请号:US10563762

    申请日:2004-07-13

    IPC分类号: C07F15/00 C07C229/00 C09K3/00

    摘要: The invention pertains to an aqueous solution of a sodium salt xNa+ yH+ of the chelating compound of formula I: wherein x=2.1–2.7, y=0.9–0.3, and x+y=3. The invention further pertains to a container comprising at least 0.5 kg of said aqueous solution and to a method of preparing an aqueous solution comprising at least 45 wt % of the sodium salt xNa+ yH+ of the chelating compound of formula I from Na3-HEDTA, comprising the steps of electrodialysing an aqueous solution containing less than 42 wt % of Na3-HEDTA using a bipolar membrane, thereby converting the trisodium salt solution to the solution of the sodium salt of formula I with x=2.1–2.7, y=0.9–0.3, and x+y=3.

    摘要翻译: 本发明涉及式I的螯合化合物的钠盐水溶液,其中x = 2.1-2.7,y = 0.9-0.3, x + y = 3。 本发明还涉及包含至少0.5kg所述水溶液的容器和一种制备水溶液的方法,该水溶液包含至少45wt%的钠盐x Na +,H 2 O, 该方法包括以下步骤:使用含有少于42重量%的Na 3 -HEDTA的水溶液进行电渗析,步骤 由此将三钠盐溶液转化为式I的钠盐溶液,其中x = 2.1-2.7,y = 0.9-0.3,x + y = 3。

    CHELATING AGENT BASED IONIC LIQUIDS, A PROCESS TO PREPARE THEM, AND THEIR USE

    公开(公告)号:US20100311998A1

    公开(公告)日:2010-12-09

    申请号:US12671667

    申请日:2008-07-31

    摘要: The present invention relates to ionic liquids of the formula: (Mm+)xH+ynN+R1R2R3R4Z—N(—CHXCOO−)pY2-p or (Mm+)xH+ynP+R1R2R3R4Z—N(—CHXCOO−)pY2-p wherein any one of R1 to R4 independently represents a hydrogen, alkyl, cycloalkyl, aryl or aralkyl group that may be unsubstituted or substituted with one or more groups selected from OH, Cl, Br, F, I, phenyl, NH2, CN, NO2, an ether group, COOR5, CHO, COR5 or OR5, wherein R5 is an alkyl or cycloalkyl group, and wherein two of the groups R1 to R4 together with the N atom may form a heteroaromatic or heterocyclic group such as a pyridinium, pyrrolidinium or imidazolium group; the Z—N(—CHXCOO−)pY2-p is the anion derived from a chelating agent, wherein Z is a group selected from hydrogen, alkyl, an alkyl group optionally substituted with one or more carboxylate groups, hydroxyl groups and/or optionally containing one or more ether functionalities, or Z is a group of the formula —CH2—CHR6—R7—N—(CH2COO−)2, R6 is hydrogen or a C1-C3 alkyl group, R7 is a single bond, a C1-C3 alkylene group or one or more groups of the formula —N(CH2COO−)—CH2—CHR6—R8—, R8 is a single bond or a C1-C3 alkylene group, p is 2 or 1, X is H, an aryl group that may be unsubstituted or substituted with an OH and/or CH3 substituent, or CH2COO−, and when p is 1, Y is H, a benzyl group that may be unsubstituted or substituted with an OH and/or CH3 group, or a phenyl group that may be unsubstituted or substituted with an OH and/or CH3 substituent, Mm+ is a m-valent metal cation, n is 1 or higher, x is from 0 to 5, y is from 0 to 3, the total positive charge of (Mm+)x, H+y, and nN+R1R2R3R4 or nP+R1R2R3R4 equals the negative charge of the Z—N(—CHXCOO−)pY2-p anion, wherein at least one of the following conditions is fulfilled: i) the chelating agent has a connectivity index 1X/3X of below 2.17, ii) at least two different cations are present in the salt, whereby a proton cation does not count as one of the at least two, iii) at least one cation is a bivalent, trivalent, tetravalent or pentavalent cation, and having a melting point below 120° C. The invention further relates to a process to prepare them and their use.