Aqueous acid composition and method of use
    23.
    发明授权
    Aqueous acid composition and method of use 失效
    含水酸组成及使用方法

    公开(公告)号:US4636327A

    公开(公告)日:1987-01-13

    申请号:US728448

    申请日:1985-05-01

    IPC分类号: C23G1/08 C23F11/14

    CPC分类号: C23G1/088

    摘要: Aqueous acid compositions are described which comprise (a) hydroxyethylethylenediaminetriacetic acid, and (b) a compatible acid corrosion inhibitor. The compositions are useful in removing iron oxide scale from metal surfaces.

    摘要翻译: 描述了含有(a)羟乙基乙二胺三乙酸和(b)相容的酸腐蚀抑制剂的含水酸组合物。 该组合物可用于从金属表面除去氧化铁垢。

    Set retarding additives for cement from aminomethylenephosphonic acid
derivatives
    25.
    发明授权
    Set retarding additives for cement from aminomethylenephosphonic acid derivatives 失效
    从氨基亚甲基膦酸衍生物中设置水泥的阻燃添加剂

    公开(公告)号:US4468252A

    公开(公告)日:1984-08-28

    申请号:US500104

    申请日:1983-06-01

    IPC分类号: C04B24/00 C04B7/35

    CPC分类号: C04B24/003

    摘要: Compounds useful as cement set retarding additives have been found which have the formula ##STR1## wherein A, B, C and D substituents are independently selected from hydrogen, methylenephosphonic acid, or salts thereof, hydroxypropyltrialkylammonium halide, wherein the trialkylammonium moiety contains alkyl groups having from 1 to 5 carbon atoms and n is 0 to 15, and wherein said substituents include at least one methylenephosphonic acid group, or salt thereof, and at least one hydroxypropyltrialkylammonium halide group.

    摘要翻译: 已经发现可用作水泥组阻滞添加剂的化合物具有下式:其中A,B,C和D取代基独立地选自氢,亚甲基膦酸或其盐,羟丙基三烷基卤化铵,其中三烷基铵部分含有具有 1至5个碳原子,n为0至15,并且其中所述取代基包括至少一个亚甲基膦酸基团或其盐和至少一种羟丙基三烷基卤化铵基团。

    Set retarding compounds for use in cement slurries
    26.
    发明授权
    Set retarding compounds for use in cement slurries 失效
    设置用于水泥浆的阻滞剂

    公开(公告)号:US4466836A

    公开(公告)日:1984-08-21

    申请号:US489441

    申请日:1983-04-28

    IPC分类号: C04B24/00 C07F9/6509 C04B7/35

    CPC分类号: C04B24/003 C07F9/650958

    摘要: The process of employing as a cement setting retarder a compound which is a phosphonomethylated derivative of a dimer or polymer which is the reaction product of ethylene dichloride or epichlorohydrin with aminoethylpiperazine wherein at least 50% of the amine hydrogen substituents are phosphonomethyl groups or an alkali metal, alkaline earth metal or ammonium salt thereof.

    摘要翻译: 作为水泥固化缓凝剂的方法,是作为二氯乙烯或表氯醇与氨基乙基哌嗪的反应产物的二聚体或聚合物的膦酰基甲基化衍生物的化合物,其中至少50%的胺氢取代基是膦酰基甲基或碱金属 ,碱土金属或铵盐。

    Cement compositions containing set retarders
    27.
    发明授权
    Cement compositions containing set retarders 失效
    含有凝结缓凝剂的水泥组合物

    公开(公告)号:US4466835A

    公开(公告)日:1984-08-21

    申请号:US486123

    申请日:1983-04-18

    IPC分类号: C04B24/00 C04B7/35

    CPC分类号: C04B24/003

    摘要: The process of employing as a cement setting retarder a compound which is a derivative of dicyclopentadiene bis(methylamine) wherein at least one amine hydrogen is substituted with a methylenephosphonic acid group or a salt thereof.

    摘要翻译: 作为水泥固化缓凝剂的方法,其中至少一个胺氢被亚甲基膦酸基团取代的二环戊二烯双(甲胺)的衍生物或其盐。

    Compounds containing quaternary ammonium and methylenephosphonic acid
groups
    28.
    发明授权
    Compounds containing quaternary ammonium and methylenephosphonic acid groups 失效
    含有季铵和亚甲基膦酸基团的化合物

    公开(公告)号:US4459241A

    公开(公告)日:1984-07-10

    申请号:US489442

    申请日:1983-04-28

    CPC分类号: C07F9/3817 C02F5/14

    摘要: Compounds having improved properties of inhibiting the precipitation of metal ions when used in threshold amounts have been made which are derivatives of ammonia or di- or polyamines in which the amine hydrogens have been substituted with both methylenephosphonic acid groups or their salts and hydroxypropyl quaternaryammonium halide groups. Thus, ammonia can have two hydrogens replaced with methylenephosphonic groups while the third is replaced with a hydroxypropyltrimethylammonium chloride group; and three hydrogens of ethylenediamine can be replaced with methylenephosphonic groups, the fourth being replaced with a hydroxypropyltrimethylammonium chloride group.

    摘要翻译: 已经制备了具有改进的以阈值使用时抑制金属离子沉淀的性质的化合物,其是氨或二胺或多胺的衍生物,其中胺氢被二亚甲基膦酸基团或其盐和羟丙基季铵卤化物基团取代 。 因此,氨可以用亚甲基膦基取代两个氢,而第三个氢被羟丙基三甲基氯化铵代替; 乙二胺的三个氢可以被亚甲基膦基取代,第四个被羟丙基三甲基氯化铵置换。

    Method of preparing a manganese chelate having improved properties
    29.
    发明授权
    Method of preparing a manganese chelate having improved properties 失效
    制备具有改进性能的锰螯合物的方法

    公开(公告)号:US4322361A

    公开(公告)日:1982-03-30

    申请号:US126792

    申请日:1980-03-03

    IPC分类号: C07F13/00

    CPC分类号: C07F13/005 Y10S71/02

    摘要: Ethylenediaminetetraacetic acid and the trisodium salt of N-hydroxyethylethylenediaminetriacetic acid are mixed in water at mole ratios of 80/20 to 52/48, respectively, and a manganese compound is dissolved therein with heating. The pH is adjusted to 7 and water is added to make a solution of manganese chelate which contains 6% by wt. manganese. The resulting solution has good freeze-thaw stability.

    摘要翻译: 乙二胺四乙酸和N-羟乙基乙二胺三乙酸的三钠盐分别在80/20至52/48的摩尔比的水中混合,加热溶解锰化合物。 将pH调节至7并加入水以制备含有6重量%的锰螯合物的溶液。 锰。 所得到的溶液具有良好的冻融稳定性。

    SPEAKER ENCLOSURE FRAME
    30.
    发明申请
    SPEAKER ENCLOSURE FRAME 审中-公开
    扬声器外壳框架

    公开(公告)号:US20150156574A1

    公开(公告)日:2015-06-04

    申请号:US14620064

    申请日:2015-02-11

    申请人: David A. Wilson

    发明人: David A. Wilson

    IPC分类号: H04R1/02

    摘要: A speaker enclosure may include a speaker enclosure frame with a back wall, a first, inner wall and a second, outer wall extending from the back wall. The first, inner wall may be longer than the second, outer wall such that a baffle attaches to the first, inner wall, but only attaches to the second, outer wall via the first, inner wall and the back wall.

    摘要翻译: 扬声器外壳可以包括具有后壁的扬声器外壳框架,第一内壁和从后壁延伸的第二外壁。 第一内壁可以比第二外壁长,使得挡板附接到第一内壁,但是仅通过第一内壁和后壁附接到第二外壁。