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1.发明授权Procedure for the recovery of phenol from its mixtures containing cumene and alpha-methylstyrene 失效从含异丙基苯和α-甲基苯乙烯的混合物中回收苯酚的方法
公开(公告)号：US5456806A
公开(公告)日：1995-10-10
申请号：US232408
申请日：1994-04-25
CPC分类号： C07C37/80 , C07C37/685
摘要： A procedure for the recovery of phenol from its mixtures containing cumene and alpha-methylstyrene, is based on the extractive distillation of the mixtures with acetophenone.
摘要翻译： 从含有枯烯和α-甲基苯乙烯的混合物中回收苯酚的方法是基于与苯乙酮的混合物的萃取蒸馏。
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公开(公告)号：US4981963A
公开(公告)日：1991-01-01
申请号：US341750
申请日：1989-04-21
IPC分类号： C07C67/20 , B01J31/02 , C07B61/00 , C07C69/36 , C07C231/10 , C07C233/56 , C07D295/185
CPC分类号： C07D295/185 , C07C231/10 , C07C233/56 , C07C67/20
摘要： A new process is described for the preparation of oxalic acid esters and amides of general formula (I) ##STR1## wherein Z designates an --OR or --NR.sup.1 R.sup.2 group, wherein R represents substituted or unsubstituted alkyl, alkenyl, cycloalkyl, aryl, or aryl-alkyl, R.sup.1 is hydrogen or substituted or unsubstituted alkyl, alkenyl, cycloalkyl, aryl, or aryl-alkyl, R.sup.2 represents substituted or unsubstituted alkyl, alkenyl, cycloalkyl, aryl, or aryl-alkyl, or R.sup.1 and R.sup.2 taken together with the adjacent nitrogen atom represent a saturated 5-, 6-, 7-, or 8-membered heterocyclic ring, which may contain an additional heteroatom selected from --O--, --S--, and --N(H, Alkyl)--, and optionally bear one or more alkyl or alkenyl substituents, andZ.sup.1 designates an --OR or --NR.sup.1 R.sup.2 group, wherein R, R.sup.1, and R.sup.2 are as defined before, or a group --NHCOCH.sub.3, which comprises the base-catalysed reaction of diacetyloxamide with an alcohol ROH or/and an amine HNR.sup.1 R.sup.2. The compounds of formula (I) have many industrial utilities, mainly as intermediates and stabilizers in the polymer field.
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公开(公告)号：US4374279A
公开(公告)日：1983-02-15
申请号：US325338
申请日：1981-11-27
IPC分类号： C07C409/16 , C07C179/06
CPC分类号： C07C409/16 , C07C407/00 , C07C407/003
摘要： A process for the preparation of dicumyl peroxide by reaction of dimethylbenzyl hydroperoxide (cumene hydroperoxide) with methyl cumyl ether is described. The reaction is carried out in the presence of a catalytic quantity of Lewis or Bronsted acids, the methanol which forms as a by-product being removed as the reaction proceeds. Furthermore, the reaction is carried out in a reaction medium consisting of the methyl cumyl ether itself, which is employed in quantities greater than the stoichiometric quantity required for the reaction with the cumene hydroperoxide.
摘要翻译： 描述了通过二甲基苄基氢过氧化物（氢过氧化枯烯）与甲基枯基醚反应制备过氧化二异丙苯的方法。 该反应在催化量的路易斯酸或布朗斯台德酸存在下进行，当反应进行时，作为副产物形成的甲醇被除去。 此外，反应在由甲基枯烯醚本身组成的反应介质中进行，其用量大于与氢过氧化枯烯反应所需的化学计量量。
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公开(公告)号：US5149872A
公开(公告)日：1992-09-22
申请号：US655041
申请日：1991-02-14
IPC分类号： C07C67/00 , C07C241/00 , C07C241/04 , C07C243/28
CPC分类号： C07C241/04
摘要： A new process for preparing oxalyl- and oxamyl-hydrazides which comprises contacting oxamide or diacetyloxamide with the corresponding hydrazine derivative of formulaR.sub.1 R.sub.2 N--NHR.sub.3wherein R.sub.1 represents a hydrogen atom or an optionally substituted alkyl, cycloalkyl, aryl, or aryl-alkyl group, R.sub.2 is a hydrogen atom or an optionally substituted alkyl group, or R.sub.1 and R.sub.2 taken together with the adjacent nitrogen atom represent a saturated heterocyclic ring, and R.sub.3 is a hydrogen atom or an optionally substituted alkyl group.
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5.发明授权
公开(公告)号：US5098525A
公开(公告)日：1992-03-24
申请号：US534183
申请日：1990-06-06
IPC分类号： A62D3/33 , A62D3/40 , A62D101/22 , A62D101/49 , C07C17/38
CPC分类号： A62D3/40 , A62D3/33 , A62D2101/22 , A62D2101/49 , A62D2203/02
摘要： The disposal of chlorinated pitches is carried out by a process which employs two treatments with an alcohol, which are carried out in cascade.Such treatments cause the precipitation of the suspended matter to take place. This is then caused to settle, and is separated and pyrolized, while the supernatant is distilled in order to separate the alcohol, which is recycled back to the process, from other organic components, which are sent to further uses.
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公开(公告)号：US5026866A
公开(公告)日：1991-06-25
申请号：US454407
申请日：1989-12-21
IPC分类号： C07D263/08 , C07C257/06 , C07D263/16
CPC分类号： C07D263/16
摘要： The present invention relates to a new method of synthesis of 2,2'-bis.DELTA..sup.2 -oxazoline, which consists of three steps:in the first step,N,N'-bis-(2-hydroxyethyl)-oxamide (I) is reacted with hydrogen chloride and a nitrile of formula RCN in which R.dbd.H, alkyl, aryl, arylalkyl, alkylaryl, in order to yield the correspondingN,N'-bis-(2-iminoacyloxyethyl)oxamide.2HCl (II).In the second step, the compound (II) is pyrolyzed in order to yieldN,N'-bis-(2-chloroethyl)oxamide (III) which in the third step generates, by means of the treatment with a base, the desired product 2,2'-bis-.DELTA..sup.2 -oxazoline.
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公开(公告)号：US5262016A
公开(公告)日：1993-11-16
申请号：US705395
申请日：1991-05-24
CPC分类号： C07C37/80
摘要： A stream of raw phenol, coming from the acidic cracking of cumene hydroperoxide, is purified by a process of extractive distillation carried out in the presence of acetophenone.
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8.发明授权Chemical process for the preparation of oxamide derivatives and compounds prepared thereby 失效用于制备草酰胺衍生物的化学方法及其制备的化合物
公开(公告)号：US4978786A
公开(公告)日：1990-12-18
申请号：US507084
申请日：1990-04-05
IPC分类号： C05C11/00 , C07C67/00 , C07C231/00 , C07C231/08 , C07C233/00 , C07C233/04 , C07C233/05 , C07C233/16 , C07C233/18 , C07C233/36 , C07C233/56
CPC分类号： C07C233/00 , C07C233/16
摘要： A process is described for the preparation of oxamide derivatives wherein one or both --NH.sub.2 groups are replaced by primary or secondary amino groups, through reaction of oxamide with a suitably selected amine of formula RR.sup.1 NH wherein R represents a substituted straight or branched (C.sub.2 -C.sub.12)alkyl radical wherein the substituent(s) or at least one of the substituents is selected from the group consisting of hydroxy, amino, mono-substituted amino, and di-substituted amino, and R.sup.1 represents hydrogen or an optionally substituted (C.sub.1 -C.sub.6)alkyl radical; representative oxamide derivatives which can thus be obtained useful as corrosion inhibitors, intermediates for polymers, polymer stabilizers, and slow-release fertilizers, are also described.
摘要翻译： 描述了制备其中一个或两个-NH 2基团被伯或仲氨基取代的酰胺衍生物的方法，通过草酰胺与适当选择的式RR1NH的胺反应，其中R表示取代的直链或支链（C2-C12 ）烷基，其中取代基或至少一个取代基选自羟基，氨基，单取代的氨基和二取代的氨基，并且R 1表示氢或任选取代的（C 1 -C 6）烷基 ）烷基; 还描述了可以用作腐蚀抑制剂的代表性的草酰胺衍生物，聚合物的中间体，聚合物稳定剂和缓释肥料。
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公开(公告)号：US4954660A
公开(公告)日：1990-09-04
申请号：US264035
申请日：1988-10-28
IPC分类号： C07C43/04 , B01J27/02 , B01J27/16 , B01J31/10 , C07B61/00 , C07C1/00 , C07C1/24 , C07C11/08 , C07C27/00 , C07C29/04 , C07C31/12 , C07C41/00 , C07C41/06 , C07C67/00 , C10L1/182
摘要： Linear olefins are converted into the corresponding secondary alcohols by treatment with methyl alcohol and a tertiary alcohol, in the presence of an acidic catalyst, at a temperature ranging from 120.degree. to 200.degree. C. The product mixture substantially consists of the desired secondary alcohol and of the methyl ether of the charged tertiary alcohol.The reaction products can be easily isolated by fractionation, or, in some instances, the liquid product mixture can be used as such.Of particular interest is the direct hydration of n-butenes using tert-butyl alcohol as the tertiary alcohol. The obtained product mixture can be used as such, as an additive to methanol-containing gasolines for internal combustion engines.
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公开(公告)号：US4216345A
公开(公告)日：1980-08-05
申请号：US946929
申请日：1978-09-28
IPC分类号： C07C7/13 , C07C15/107 , C07C15/02
CPC分类号： C07C15/107 , C07C7/13 , Y10S585/935
摘要： Process for the preparation of alkylbenzenes by partial chlorination of linear C.sub.9 -C.sub.15 paraffins, catalytic alkylation of benzene with the resulting mixture and fractionation by distillation of the alkylation products.At least a part of the unreacted paraffins recovered by fractionation and to be recycled to the chlorination stage is submitted, continuously or intermittently, to a purification treatment with molecular sieves.The content in undesired by-products of the alkylbenzenes can thus be maintained at negligibly low values.
摘要翻译： 通过线性C 9 -C 15链烷烃的部分氯化制备烷基苯的方法，用所得混合物对苯进行催化烷基化并通过蒸馏烷基化产物进行分馏。 至少一部分通过分级回收并被再循环到氯化阶段的未反应的链烷烃被连续或间歇地进行到用分子筛进行纯化处理。 因此烷基苯不希望的副产物的含量可以保持在可忽略的低值。
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