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    • 2. 发明授权
    • Process for improving olefin etherification catalyst life
    • 改进烯烃醚化催化剂寿命的方法
    • US5300126A
    • 1994-04-05
    • US963955
    • 1992-10-19
    • Stephen H. BrownQuang N. LeLawrence B. Alemany
    • Stephen H. BrownQuang N. LeLawrence B. Alemany
    • C07C51/347C07C51/567C10L1/14C10L1/16C10L1/18C10L1/188C10L1/20C10L1/22C10L1/24
    • C10L1/1883C07C51/347C07C51/567C10L1/14C10L1/18C10L1/1608C10L1/1824C10L1/1852C10L1/1857C10L1/1881C10L1/19C10L1/1905C10L1/201C10L1/204C10L1/205C10L1/224C10L1/2286C10L1/231C10L1/2437C10L1/245
    • A method is disclosed for the pretreatment of olefinic hydrocarbon feedstock to remove conjugated dienes and/or basic nitrogen compounds that deactivate acidic catalyst particles used in olefin conversion processes by reacting the dienes with one or more dienophiles to form the corresponding Diels-Alder adduct, followed by catalytic conversion of the olefinic hydrocarbon feedstock containing the adduct. The formation of the Diels-Alder adduct essentially eliminates the role of dienes in the feedstock as catalyst deactivating agents. When maleic anhydride (MA) is employed as the dienophile, basic nitrogen reacts with maleic anhydride, or with the tetrahydrophthalic anhydride adduct, to lower the amount of catalyst deactivating basic nitrogen compounds in the feedstock. Where the olefin conversion process comprises etherification of isoolefins with alkanol in a C.sub.4 + or C.sub.5 + olefinic hydrocarbon feedstream to produce a gasoline boiling range product enriched in oxygen and rich in high octane value alkyl tertiary alkyl ethers, it has been discovered that the adduct, particularly those adducts formed with MA, is in the gasoline boiling range and contributes usefully to the oxygen enrichment of the gasoline and to octane value.
    • 公开了一种用于预处理烯烃原料以除去共轭二烯和/或碱性氮化合物的方法,其通过使二烯与一种或多种亲双烯体反应形成相应的狄尔斯 - 阿尔德加合物,使烯烃转化过程中使用的酸性催化剂颗粒失活,随后 通过催化转化含有加合物的烯烃原料。 Diels-Alder加合物的形成基本上消除了二烯在原料中作为催化剂失活剂的作用。 当使用马来酸酐(MA)作为亲二烯体时,碱性氮与马来酸酐或四氢邻苯二甲酸酐加合物反应,以降低原料中催化剂失活碱性氮化合物的量。 当烯烃转化方法包括在C4 +或C5 +烯烃原料流中异构烯烃与烷醇的醚化以产生富含氧并富含高辛烷值烷基叔烷基醚的汽油沸程产物时,已经发现加合物,特别是那些 与MA形成的加合物处于汽油沸点范围内,有助于汽油的富氧和辛烷值。
    • 4. 发明授权
    • Process for the preparation of oxydiphthalic anhydride and
acyloxyphthalic anhydrides
    • 氧联二邻苯二甲酸酐和酰氧基邻苯二甲酸酐的制备方法
    • US5153335A
    • 1992-10-06
    • US790839
    • 1991-11-12
    • Jeffrey S. Stults
    • Jeffrey S. Stults
    • C07C51/567C07C65/24
    • C07C65/24C07C51/567
    • A method for the preparation of acyloxyphthalic anhydride or oxydiphthalic anhydride which comprises the reaction of a halophthalic anhydride with an alkali metal salt and at least a catalytically effective amount of an acid or acid derivative selected from the group consisting of benzoic acids, substituted benzoic acids, benzoic acid salts or substituted benzoic acid salts, and hydrolyzable benzoyl esters, and hydrolyzable substituted benzoyl esters, alkyl carboxylic acids, hydrolyzable esters of alkyl carboxylic acids, and salts of alkyl carboxylic acids. The process may be conducted without solvent, in a polar solvent or in a non-polar solvent using a phase transfer catalyst.
    • 一种制备酰氧邻苯二甲酸酐或氧联二邻苯二甲酸酐的方法,其包括卤代邻苯二甲酸酐与碱金属盐和至少一种催化有效量的酸或酸衍生物的反应,所述酸或酸衍生物选自苯甲酸,取代的苯甲酸, 苯甲酸盐或取代的苯甲酸盐,以及可水解的苯甲酰酯,和可水解的取代的苯甲酰基酯,烷基羧酸,烷基羧酸的可水解的酯和烷基羧酸的盐。 该方法可以在无溶剂的情况下,在极性溶剂中或使用相转移催化剂的非极性溶剂中进行。
    • 10. 发明授权
    • Fluorinated carbocylic compounds
    • 氟化碳环化合物
    • US4792618A
    • 1988-12-20
    • US680695
    • 1984-12-12
    • Joseph F. BieronDavid Y. Tang
    • Joseph F. BieronDavid Y. Tang
    • C07C51/567C07C69/75C07C49/303C07C53/44C07C121/46
    • C07C51/567
    • Fluoro-substituted carbocyclic compounds are prepared by(A) reacting hydrogen fluoride with a chloro-cyclohexenyl compound of the formula ##STR1## where R.sub.1 and R.sub.2 are independently selected from the group consisting of --H, --CH.sub.2 OH, --COF, --COCl, --CF.sub.3, --CN, ##STR2## and --CH.sub.2 R, where R is --H or alkyl of 1-4 carbon atoms, to form a gem-dihalocyclohexane compound of the formula ##STR3## where X is chlorine and R.sub.1 and R.sub.2 are as defined above, (B) dehydrohalogenating the gem-dihalocyclohexane compound in the vapor phase to form a fluoro-cyclohexenyl compound of the formula ##STR4## (C) contacting the fluoro-cyclohexenyl compound, in the vapor phase, with a dehydrogenation catalyst to form a fluoro-substituted aromatic compound of the formula ##STR5##
    • 氟取代的碳环化合物是通过(A)使氟化氢与式(IMAGE)的氯 - 环己烯基化合物反应来制备的,其中R 1和R 2独立地选自-H,-CH 2 OH,-COF,-COCl, -CF 3,-CN,和-CH 2 R,其中R是-H或1-4个碳原子的烷基,以形成式为“IMAGE”的偕 - 二卤代环己烷化合物,其中X为氯,R 1和R 2为 (B)在蒸气相中脱氢卤化偕 - 二卤代环己烷化合物以形成下式的氟 - 环己烯基化合物:(C)使气相中的氟 - 环己烯基化合物与脱氢催化剂接触形成 具有下式的氟取代的芳族化合物