Inhibition of scale
    3.
    发明授权
    Inhibition of scale 失效
    抑制规模

    公开(公告)号:US5360550A

    公开(公告)日:1994-11-01

    申请号:US154689

    申请日:1993-11-18

    CPC分类号: C02F5/14

    摘要: A method of inhibiting the precipitation of barium scale from an aqueous system, comprising adding to the aqueous system a product having the formula I: ##STR1## in which M is hydrogen or an alkali metal ion, an ammonium ion or a quanternized amine radical; R.sub.1 is hydrogen or methyl; and n is an integer having an average value ranging from 4 to 20.

    摘要翻译: 一种抑制钡水垢从水性体系沉淀的方法,包括向水性体系中加入具有式I的产物:其中M为氢或碱金属离子,铵离子或化学胺基团 ; R1是氢或甲基; n为平均值为4〜20的整数。

    Corrosion inhibition
    4.
    发明授权
    Corrosion inhibition 失效
    腐蚀抑制

    公开(公告)号:US5229030A

    公开(公告)日:1993-07-20

    申请号:US788689

    申请日:1991-11-06

    IPC分类号: C23F11/167 C23F11/173

    CPC分类号: C23F11/173

    摘要: A method of inhibiting corrosion of metal surfaces in contact with an aqueous system, comprising contacting the metal surfaces with a telomer compound having the formula I: ##STR1## in which M is hydrogen or an alkali or alkaline earth metal ion, an ammonium ion or a quaternised amine radical; and n is an average integer ranging from 1 to 60.

    Phosphonic cotelomers and method of use
    6.
    发明授权
    Phosphonic cotelomers and method of use 失效
    膦类调色剂及其使用方法

    公开(公告)号:US5681479A

    公开(公告)日:1997-10-28

    申请号:US483431

    申请日:1995-06-07

    IPC分类号: C02F5/14 C08F2/38 C23F11/173

    CPC分类号: C23F11/173 C02F5/14 C08F2/38

    摘要: Phosphonic coletomers of the formula I: ##STR1## wherein X.sub.5 is hydrogen, an alkali metal atom, an alkaline earth metal atom, or an ammonium or amine residue; and A.sub.2 is a copolymer residue comprising two different residues ##STR2## wherein r is an integer ranging from 2 to 100, and wherein, in the first residue, W.sub.3 is --COOH, and in the second residue, W.sub.3 is --CONHC(CH.sub.3).sub.2 CH.sub.2 SO.sub.3 X.sub.5 wherein X.sub.5 is as hereinbefore defined. The cotelomers inhibit scale and corrosion in aqueous systems.

    摘要翻译: 式I的膦酸共聚物:其中X 5是氢,碱金属原子,碱土金属原子或铵或胺残基; 并且A2是包含两个不同残基的共聚物残基,其中r是2至100的整数,并且其中在第一个残基中,W3是-COOH,而在第二个残基中,W3是-CONHC(CH 3) 2CH 2 SO 3 X 5,其中X 5如上文所定义。 cotelomers阻止水系统中的垢和腐蚀。

    Telomers
    7.
    发明授权
    Telomers 失效

    公开(公告)号:US5604291A

    公开(公告)日:1997-02-18

    申请号:US308038

    申请日:1994-09-16

    摘要: Phosphonic telomer intermediates for preparing the telomers of U.S. Pat. No. 5,376,731 may be produced by an aqueous process comprising (a) reacting hypophosphorous acid with a carbonyl compound which is preferably an aldehyde, a ketone or an imine, and (b) reacting the product of (a) with an olefinic reactant or reactants in the presence of a suitable initiator especially a free radical initiator. The telomer intermediates are themselves useful as scale inhibitors in aqueous systems.

    摘要翻译: 用于制备美国专利的调聚物的膦酸调聚物中间体 5,376,731号可以通过含水方法制备,该方法包括(a)使次亚​​磷酸与优选醛,酮或亚胺的羰基化合物反应,和(b)使(a)的产物与烯属反应物或反应物 在合适的引发剂,特别是自由基引发剂的存在下。 调聚物中间体本身可用作水系统中的阻垢剂。

    Telomers
    9.
    发明授权
    Telomers 失效

    公开(公告)号:US5376731A

    公开(公告)日:1994-12-27

    申请号:US887622

    申请日:1992-05-22

    摘要: Phosphonic (co) telomers of the type described in U.S. Pat. Nos. 4,046,707 and 4,681,686 and European Patent Application 360746 may be produced by an aqueous process comprising (a) reacting hypophosphorous acid with a carbonyl compound which is preferably an aldehyde, a ketone or an imine, (b) reacting the product of (a) with an olefin or olefins in the presence of a suitable initiator especially a free radical initiator, and (c) converting the product obtained from (b) to a phosphonic (co) telomer, e.g., by reaction with hypochlorite. The (co) telomer products are useful as scale inhibitors in aqueous systems.

    摘要翻译: 在美国专利中描述的类型的膦酸(共)调聚物。 可以通过含水方法制备4,046,707和4,681,686和欧洲专利申请360746,该方法包括(a)使次亚​​磷酸与优选醛,酮或亚胺的羰基化合物反应,(b)使(a) 在合适的引发剂,特别是自由基引发剂的存在下,使用烯烃或烯烃,和(c)将由(b)获得的产物转化为膦酸(共)调聚物,例如通过与次氯酸盐反应。 (共)调聚物产品可用作水系统中的阻垢剂。