Novel compositions prepared from alkyl substituted nitrogen-containing
aromatic heterocyclic compounds and dicarboxylic acid monoanhydrides
    1.
    发明授权
    Novel compositions prepared from alkyl substituted nitrogen-containing aromatic heterocyclic compounds and dicarboxylic acid monoanhydrides 失效
    由烷基取代的含氮芳族杂环化合物和二羧酸一酸酐制备的新型组合物

    公开(公告)号:US4725373A

    公开(公告)日:1988-02-16

    申请号:US831966

    申请日:1986-02-24

    IPC分类号: C07D213/50 C23F11/14

    摘要: New compositions of matter are disclosed which are the products resulting from reacting an alkyl substituted aromatic heterocyclic nitrogen-containing compound such as 2,4,6-trimethylpyridine or 2,3,5,6-tetramethylpyrazine with a dicarboxylic acid monoanhydride such as 2-dodecen-1-yl succinic anhydride. These compositions are useful in preventing corrosion of metallic articles in corrosive environments. They are particularly useful in down hole oil and gas well applications.

    摘要翻译: 公开了新的物质组合物,其是使烷基取代的芳族杂环含氮化合物如2,4,6-三甲基吡啶或2,3,5,6-四甲基吡嗪与二羧酸单酐如2- 十二碳烯-1-基琥珀酸酐。 这些组合物可用于防止金属制品在腐蚀性环境中的腐蚀。 它们在井下油气井应用中特别有用。

    Use of dispersion polymers as friction reducers in aqueous fracturing fluids
    6.
    发明授权
    Use of dispersion polymers as friction reducers in aqueous fracturing fluids 有权
    在水性压裂液中使用分散体聚合物作为减摩剂

    公开(公告)号:US06787506B2

    公开(公告)日:2004-09-07

    申请号:US10115852

    申请日:2002-04-03

    IPC分类号: E21B4326

    摘要: A method of reducing friction resulting from turbulent flow in an aqueous fracturing fluid in an oil field fracturing process comprising adding to the aqueous fracturing fluid an effective friction-reducing amount of one or more dispersion polymers, wherein the dispersion polymer is composed of from about 5 to about 95 mole percent of one or more nonionic monomers and from about 95 to about 5 mole percent of one or more cationic or anionic monomers and has a molecular weight of at least 100,000.

    摘要翻译: 一种在油田压裂方法中减少水力压裂液中湍流产生的摩擦的方法,包括向含水压裂液中加入有效的减摩量的一种或多种分散体聚合物,其中分散体聚合物由约5 至约95摩尔%的一种或多种非离子单体和约95至约5摩尔%的一种或多种阳离子或阴离子单体,并且具有至少100,000的分子量。

    Corrosion inhibitors
    8.
    发明授权
    Corrosion inhibitors 失效
    腐蚀抑制剂

    公开(公告)号:US4837323A

    公开(公告)日:1989-06-06

    申请号:US49629

    申请日:1987-05-13

    IPC分类号: C09K8/54 C23F11/173

    CPC分类号: C09K8/54 C23F11/173

    摘要: The reaction product of an .alpha.,.beta.-ethylenically unsaturated aldehyde with an organic amine further reacted with a carboxylic acid, organic halide or an epoxide containing compound is employed as corrosion inhibitors in a process for preventing corrosion of ferrous metals in contact with corrosive brine, oil and gas well fluids.

    摘要翻译: 在防止与腐蚀性盐水接触的黑色金属腐蚀的过程中,使用α,β-烯属不饱和醛与有机胺进一步与羧酸,有机卤化物或含环氧化合物反应的反应产物作为腐蚀抑制剂, 油气井液。

    Thermosettable polymers or prepolymers prepared from heterocyclic
materials having alkyl substituents, mono- or dianhydrides,
ethylenically unsaturated materials and a hydroxide, carbonate or
bicarbonate of a metal of groups I-A or II-A
    10.
    发明授权
    Thermosettable polymers or prepolymers prepared from heterocyclic materials having alkyl substituents, mono- or dianhydrides, ethylenically unsaturated materials and a hydroxide, carbonate or bicarbonate of a metal of groups I-A or II-A 失效
    由具有烷基取代基的杂环材料制备的可热熔聚合物或预聚物,单 - 或二酐,烯键式不饱和物质和I-A或II-A族金属的氢氧化物,碳酸盐或碳酸氢盐

    公开(公告)号:US4812531A

    公开(公告)日:1989-03-14

    申请号:US834252

    申请日:1986-02-28

    申请人: Duane S. Treybig

    发明人: Duane S. Treybig

    IPC分类号: C08F8/44 C08G69/48

    CPC分类号: C08F8/44

    摘要: Thermosettable prepolymers or polymers are prepared by reacting (A) the reaction product of (1) a heterocyclic material having one or more rings, at least one nitrogen atom and at least two substituent groups which have at least one reactive hydrogen atom attached to a carbon atom which is attached to a heterocyclic ring such as 2,3,5,6-tetramethylpyrazine; (2) a cycloaliphatic or aromatic carboxylic acid mono- or dianhydride such as pyromellitic dianhydride; and (3) a material containing a polymerizable ethylenically unsaturated group and at least one group selected from (a) a heterocyclic material having one or more rings, at least one nitrogen atom and at least one substituent group which has at least one reactive hydrogen atom attached to a carbon atom which is attached to a heterocyclic ring such as 2-methyl-5-vinyl pyridine or (b) a cycloaliphatic or aromatic carboxylic acid mono- or dianhydride group such as cis-5-norbornene-endo-2,3-dicarboxylic anhydride; with (B) an aqueous or alcoholic solution of a hydroxide, carbonate or bicarbonate of a metal of Groups I-A or II-A, such as sodium hydroxide.These polymers or prepolymers when subjected to a thermoset condition by heat and pressure or by homopolymerization in the presence of or copolymerization with an N,N'-bis-imide exhibit good char forming properties when subjected to a temperature of 700.degree. C.

    摘要翻译: 通过使(A)具有一个或多个环的杂环材料,至少一个氮原子和至少两个具有至少一个连接到碳上的反应性氢原子的取代基的反应产物(A)反应制备可热可预热的预聚物或聚合物 与杂环连接的原子,如2,3,5,6-四甲基吡嗪; (2)脂环族或芳族羧酸单或二酐如均苯四酸二酐; 和(3)含有可聚合烯键式不饱和基团和至少一种选自(a)具有一个或多个环,至少一个氮原子和至少一个具有至少一个反应性氢原子的取代基的杂环材料的材料 连接到连接到杂环的碳原子上,例如2-甲基-5-乙烯基吡啶或(b)脂环族或芳族羧酸单 - 或二酐基团,例如顺式-5-降冰片烯 - 内 - 2,3 二羧酸酐; 与(B)含有I-A或II-A族金属的氢氧化物,碳酸盐或碳酸氢盐的水溶液或醇溶液,例如氢氧化钠。 这些聚合物或预聚物当经受热和压力的热固性条件或在N,N'-二酰亚胺的存在下或与N,N'-二酰亚胺的共聚合时均聚时,当经受700℃的温度时表现出良好的成炭性能。