Combinations of imidazolines and wetting agents as environmentally acceptable corrosion inhibitors
    1.
    发明授权
    Combinations of imidazolines and wetting agents as environmentally acceptable corrosion inhibitors 有权
    作为环境可接受的腐蚀抑制剂,咪唑啉和润湿剂的组合

    公开(公告)号:US06338819B1

    公开(公告)日:2002-01-15

    申请号:US09250595

    申请日:1999-02-16

    IPC分类号: C23F1114

    CPC分类号: C23F11/149 C23F11/10

    摘要: A method and corrosion inhibitor for inhibiting corrosion of metal equipment in an aqueous medium comprising components selected from the group consisting of Skeletonema costatum, fish, other algae, and a combination thereof. The method comprises incorporating into the medium a corrosion inhibiting amount of a water soluble corrosion inhibitor comprising an N-ethoxy, 2-substituted imidazoline. The N-ethoxy substituent comprises a quantity of ethylene oxide effective to render the imidazoline water soluble. The corrosion inhibitor is rendered more environmentally compatible by shortening the number of carbon atoms in the fatty acid chain at the 2-position of the imidazoline. The fatty acid chain consists essentially about 18 carbon atoms or less, preferably about 10 carbon atoms or less, most preferably from about 6 to about 8 carbon atoms. As the number of carbon atoms in the fatty acid chain is reduced, the efficacy of the corrosion inhibitor is increased by combination with a wetting agent, preferably an ethoxylated alcohol having from about 8 to about 10 carbon atoms.

    摘要翻译: 一种用于抑制水性介质中金属设备腐蚀的方法和腐蚀抑制剂,其包含选自骨骼水泥,鱼,其他藻类及其组合的组分。 该方法包括向该介质中加入腐蚀抑制量的包含N-乙氧基-2-取代咪唑啉的水溶性缓蚀剂。 N-乙氧基取代基包括一定量的有效使咪唑啉水溶解的环氧乙烷。 通过缩短咪唑啉2-位的脂肪酸链中的碳原子数,使腐蚀抑制剂变得更环保。 脂肪酸链基本上由约18个碳原子或更少,优选约10个碳原子或更少,最优选约6-约8个碳原子组成。 随着脂肪酸链中碳原子数的减少,通过与润湿剂(优选约8至约10个碳原子的乙氧基化醇)组合来增加腐蚀抑制剂的功效。

    Biodegradable corrosion inhibitors of low toxicity
    2.
    发明授权
    Biodegradable corrosion inhibitors of low toxicity 失效
    生物降解腐蚀抑制剂,毒性低

    公开(公告)号:US5785895A

    公开(公告)日:1998-07-28

    申请号:US569372

    申请日:1995-12-06

    CPC分类号: C23F11/149 C09K8/54 C23F11/10

    摘要: A method for inhibiting corrosion in an aqueous medium is disclosed. The method comprises incorporating into the medium an amount of a water-soluble corrosion inhibitor sufficient to inhibit corrosion. The corrosion inhibitor comprises an N-ethoxy, 2-substituted imidazoline, the N-ethoxy substituent having from one to about thirty ethoxy units and the 2-substituent being an unsaturated or polyunsaturated fatty chain of from about six to about thirty carbons. If the medium is sweet, the inhibitor further comprises a phosphate ester derived from a water-soluble oxyethylated, straight chain alcohol of from about two to about thirty carbons. Corrosion inhibitor compositions useful in such method are also disclosed.

    摘要翻译: 公开了一种在水性介质中抑制腐蚀的方法。 该方法包括向培养基中加入一定量的足以抑制腐蚀的水溶性腐蚀抑制剂。 腐蚀抑制剂包括N-乙氧基,2-取代的咪唑啉,N-乙氧基取代基具有一至三十个乙氧基单元,2-取代基是约六至约三十个碳的不饱和或多不饱和脂肪链。 如果介质是甜的,则抑制剂还包含衍生自约2-约30个碳原子的水溶性乙氧基化的直链醇的磷酸酯。 还公开了可用于这种方法的腐蚀抑制剂组合物。

    Biodegradable corrosion inhibitors of low toxicity
    3.
    发明授权
    Biodegradable corrosion inhibitors of low toxicity 失效
    生物降解腐蚀抑制剂,毒性低

    公开(公告)号:US5393464A

    公开(公告)日:1995-02-28

    申请号:US146900

    申请日:1993-11-02

    CPC分类号: C23F11/149 C09K8/54 C23F11/10

    摘要: A method for inhibiting corrosion in an aqueous medium is disclosed. The method comprises incorporating into the medium an amount of a water-soluble corrosion inhibitor sufficient to inhibit corrosion. The corrosion inhibitor comprises an N-ethoxy,2-substituted imidazoline, the N-ethoxy substituent having from one to about thirty ethoxy units and the 2-substituent being an unsaturated or polyunsaturated fatty chain of from about six to about thirty carbons. If the medium is sweet, the inhibitor further comprises a phosphate ester derived from a water-soluble oxyethylated, straight chain alcohol of from about two to about thirty carbons. Corrosion inhibitor compositions useful in such method are also disclosed.

    摘要翻译: 公开了一种在水性介质中抑制腐蚀的方法。 该方法包括向培养基中加入一定量的足以抑制腐蚀的水溶性腐蚀抑制剂。 腐蚀抑制剂包括N-乙氧基,2-取代的咪唑啉,N-乙氧基取代基具有一至三十个乙氧基单元,2-取代基是约六至约三十个碳的不饱和或多不饱和脂肪链。 如果介质是甜的,则抑制剂还包含衍生自约2-约30个碳原子的水溶性乙氧基化的直链醇的磷酸酯。 还公开了可用于这种方法的腐蚀抑制剂组合物。

    Corrosion inhibition with bilayer-forming surfactants
    5.
    发明授权
    Corrosion inhibition with bilayer-forming surfactants 失效
    用双层形成表面活性剂进行腐蚀抑制

    公开(公告)号:US5456767A

    公开(公告)日:1995-10-10

    申请号:US137657

    申请日:1993-10-15

    CPC分类号: C23F11/10 C09K8/54

    摘要: A method for inhibiting corrosion of a metal surface in a liquid medium is described. The method comprises incorporating into the medium a corrosion inhibiting amount of a combination of a surfactant that forms a bilayer on the metal surface in the fluid and a corrosion inhibitor that solubilizes in the medium in the presence of the surfactant. The amount of surfactant is sufficient to produce a bilayer on the metal surface in the medium. The combination isa. an anionic surfactant that forms a bilayer on the metal surface and a cationic corrosion inhibitor;b. a cationic surfactant that forms a bilayer on the metal surface and an anionic corrosion inhibitor;c. an ionic surfactant that forms a bilayer on the metal surface and an ionic corrosion inhibitor having a pendent, generally straight chain hydrocarbon or substituted hydrocarbon moiety of from about 10 to about 18 carbon atoms; ord. an ionic surfactant that forms a bilayer on the metal surface and a non-ionic corrosion inhibitor.Related compositions and methods are also disclosed.

    摘要翻译: 描述了一种用于抑制液体介质中的金属表面腐蚀的方法。 该方法包括在介质中加入腐蚀抑制量的在流体中的金属表面上形成双层的表面活性剂和在表面活性剂存在下溶解在介质中的腐蚀抑制剂的组合。 表面活性剂的量足以在介质中的金属表面上产生双层。 组合是一个。 在金属表面形成双层的阴离子表面活性剂和阳离子缓蚀剂; b。 在金属表面上形成双层的阳离子表面活性剂和阴离子腐蚀抑制剂; C。 在金属表面上形成双层的离子型表面活性剂和具有约10至约18个碳原子的侧链,通常为直链烃或取代烃部分的离子腐蚀抑制剂; 或d。 在金属表面上形成双层的离子表面活性剂和非离子腐蚀抑制剂。 还公开了相关的组合物和方法。

    Catalyzed synthesis of aryl-substituted fatty acids and fatty esters and
compositions related thereto
    6.
    发明授权
    Catalyzed synthesis of aryl-substituted fatty acids and fatty esters and compositions related thereto 失效
    芳基取代的脂肪酸和脂肪酯的催化合成及其相关的组合物

    公开(公告)号:US5840942A

    公开(公告)日:1998-11-24

    申请号:US375217

    申请日:1995-01-19

    摘要: A novel method for preparing an aryl-substituted fatty acid or fatty ester is disclosed. According to the method, an olefinic composition selected from among mono-unsaturated fatty acids, mono-unsaturated fatty esters and mixtures thereof is introduced to a reaction zone comprising a liquid aromatic hydrocarbon and a catalytic amount of a clay catalyst to produce a reaction that is allowed to proceed for a time and at a temperature sufficient to produce a reaction product comprising a desired yield of aryl-substituted fatty acid or fatty ester. Preferably, the introduction of the olefinic composition is conducted slowly, such as over a period of one to four, more preferably, two to four, hours. Related methods and compositions, including xylylstearic acid, are also disclosed.

    摘要翻译: 公开了一种制备芳基取代脂肪酸或脂肪酯的新方法。 根据该方法,将选自单不饱和脂肪酸,单不饱和脂肪酸酯及其混合物的烯烃组合物引入到包含液体芳族烃和催化量的粘土催化剂的反应区中,以产生 允许进行一段时间并在足以产生包含所需产率的芳基取代的脂肪酸或脂肪酯的反应产物的温度下进行。 优选地,缓慢地进行烯烃组合物的引入,例如在1-4的时间内,更优选的是2-4小时。 还公开了相关方法和组合物,包括二甲苯基硬脂酸。

    Preparation of diamines from aldehydes and ammonia
    7.
    发明授权
    Preparation of diamines from aldehydes and ammonia 失效
    从醛和氨制备二胺

    公开(公告)号:US4757147A

    公开(公告)日:1988-07-12

    申请号:US772972

    申请日:1985-09-05

    IPC分类号: C07D211/72 C07D211/02

    CPC分类号: C07D211/72

    摘要: This invention relates to novel highly branched amines and to a process of preparing same which comprises:(1) the preparation of a vinylimine from branched aldehydes and ammonia;(2) the dimerization and intermolecular condensation of such vinylimines to cyclic diamines; and(3) hydrolysis of such cyclic diamines to other diamines.

    摘要翻译: 本发明涉及新型高支化胺及其制备方法,其包括:(1)从支链醛和氨制备乙烯基亚胺; (2)这种乙烯基亚胺与环状二胺的二聚和分子间缩合; 和(3)将这种环状二胺水解成其它二胺。

    Pyrimidines containing sulfur and amino groups as corrosion inhibitors
    9.
    发明授权
    Pyrimidines containing sulfur and amino groups as corrosion inhibitors 失效
    含硫和氨基作为腐蚀抑制剂的嘧啶

    公开(公告)号:US4539404A

    公开(公告)日:1985-09-03

    申请号:US444418

    申请日:1982-11-24

    摘要: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.

    摘要翻译: 本发明涉及以下:(1)以聚合物巯基为特征的含氨基组合物,(2)以巯基或聚合物巯基为特征的含聚氨基的组合物,(3)一种组合物,其特征在于存在A.巯基或 特征在于以下至少一个的B.含氮基团:1.酰胺基或聚酰胺基,环状脒或多环脒基团,3.表卤代醇衍生的含氨基的基团。 本发明还涉及上述组合物作为腐蚀抑制剂的用途。

    Hexahydropyrimidines
    10.
    发明授权
    Hexahydropyrimidines 失效
    六氢嘧啶

    公开(公告)号:US4085105A

    公开(公告)日:1978-04-18

    申请号:US406544

    申请日:1973-10-15

    IPC分类号: C07D239/70 C07D239/74

    CPC分类号: C07D239/70

    摘要: This invention relates to hexahydropyrimidines (HHP) and to the preparation of HHP by the reduction of tetrahydropyrimidines (THP). HHP is preferably prepared by reacting carbonyls, such as ketones and aldehydes, with ammonia in the presence of ammonium formate to form THP and then reducing THP to HHP. The preferred carbonyl is a cycloalkylene ketone such as cyclohexyl ketone or substituted cyclohexyl ketone.

    摘要翻译: 本发明涉及六氢嘧啶(HHP)和通过还原四氢嘧啶(THP)制备HHP。 HHP优选通过在甲酸铵存在下使羰基(例如酮和醛)与氨反应制备,以形成THP,然后将THP还原成HHP。 优选的羰基是环亚烷基酮如环己基酮或取代的环己基酮。