公开(公告)号：US20040089586A1

公开(公告)日：2004-05-13

申请号：US10703580

申请日：2003-11-10

Applicant: Uniroyal Chemical Company, Inc.

Inventor： Brigitte Benage ,  Gerald J. Abruscato ,  Andrew J. Eisenstein

IPC: C07B063/04 ,  C09K015/00 ,  C07C007/20

CPC classification number: B01D3/34 ,  C07C7/04 ,  C07C7/20 ,  C07C51/50 ,  C07C67/62 ,  C07C253/32 ,  Y10S585/95 ,  C07C15/46 ,  C07C15/42 ,  C07C11/167 ,  C07C11/18 ,  C07C255/06 ,  C07C69/54 ,  C07C57/04

Abstract: Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of at least one inhibitor selected from the group consisting of C-nitrosoaniline and quinone imine oxime compounds. Also disclosed is a composition of matter comprising: A) an ethylenically unsaturated monomer and B) an effective inhibiting amount, sufficient to prevent premature polymerization during distillation or purification of said ethylenically unsaturated monomer, of at least one inhibitor selected from the group consisting of C-nitrosoaniline and quinone imine oxime compounds used together with an effective amount of oxygen or air to enhance the inhibiting activity of said inhibitor.

Abstract translation: 本文公开了一种抑制烯键式不饱和单体的过早聚合的方法，包括向所述单体中加入有效量的至少一种选自C-亚硝基苯胺和醌亚胺肟化合物的抑制剂。 还公开了一种物质组合物，其包含：A）烯键式不饱和单体和B）足以防止在所述烯属不饱和单体的蒸馏或纯化过程中过早聚合至少一种选自下组的抑制剂的有效抑制量：C 亚硝基苯胺和醌亚胺肟化合物与有效量的氧气或空气一起使用以增强所述抑制剂的抑制活性。

公开(公告)号：US20010052481A1

公开(公告)日：2001-12-20

申请号：US09260908

申请日：1999-03-02

Inventor： MAIK ARON ,  MICHAEL BACHTLER ,  JURGEN KANAND

IPC: C07C007/20

CPC classification number: C09K15/06 ,  C07B63/04 ,  C07C7/20 ,  C07C11/18 ,  C07C11/167

Abstract: Popcorn polymer growth is inhibited in unstabilized materials comprising olefinically unsaturated organic compounds by adding thereto an effective amount of an aliphatic alcohol of the formula I ROHnullnullI where R is a straight-chain, branched or cyclic C3-C20-alkyl or alkylene group, the alkylene group bearing a second hydroxyl group.

Abstract translation: 爆米花聚合物生长在包含烯属不饱和有机化合物的未稳定化材料中被抑制，通过向其中加入有效量的式I的脂族醇，其中R 1，R 2，R 2， 其中R是直链，支链或环状的C 3 -C 20 - 烷基或亚烷基，具有第二羟基的亚烷基。

公开(公告)号：US06200461B1

公开(公告)日：2001-03-13

申请号：US09186832

申请日：1998-11-05

Applicant: Sherif Eldin

Inventor： Sherif Eldin

IPC: C07C720

CPC classification number: C07C7/20 ,  C09K15/18 ,  Y10S585/95 ,  C07C11/18

Abstract: Methods and compositions for inhibiting the polymerization of ethylenically unsaturated hydrocarbons are disclosed. Combinations of aminophenol compound and either of phenylenediamine or hydroxylamine compounds are effective at inhibiting this polymerization under both processing and storage conditions.

Abstract translation: 公开了抑制烯属不饱和烃聚合的方法和组合物。 氨基苯酚化合物和苯二胺或羟胺化合物的组合在加工和储存条件下均有效地抑制该聚合。

公开(公告)号：US4232182A

公开(公告)日：1980-11-04

申请号：US853816

申请日：1977-11-21

Applicant: Alexandr G. Liakumovich ,  Boris I. Pantukh ,  Tatyana M. Lesteva

Inventor： Alexandr G. Liakumovich ,  Boris I. Pantukh ,  Tatyana M. Lesteva

IPC: C07C7/00 ,  C07C7/04 ,  C07C7/12 ,  C07C11/18

CPC classification number: C07C11/18 ,  C07C7/005 ,  C07C7/04 ,  C07C7/12

Abstract: A process for purifying isoprene produced by catalytic decomposition of dimethyldioxane from carbonyl compounds and cyclopentadiene which involves passing isoprene at a temperature of 40.degree. to 70.degree. C. through a bed of a solid product such as an anion exchange resin or alkali (the latter may be used with or without an inert carrier), followed by subjecting the isoprene to close fractionation performed with at least 50 theoretical plates and at a reflux ratio of at least 3. The process of the present invention enables practically complete purification of isoprene from carbonyl compounds and cyclopentadiene. The purified isoprene, when used as a monomer in the production of stereospecific isoprene rubber, results in high-quality products; and reduces by a factor of 2-3 the Ziegler catalyst consumption in the isoprene rubber synthesis.

Abstract translation: 通过羰基化合物和环戊二烯催化分解二甲基二恶烷产生的异戊二烯的方法，该方法涉及通过异戊二烯在40℃至70℃的温度下通过固体产物如阴离子交换树脂或碱的床（后者可以 与惰性载体一起使用或不使用惰性载体），然后使异戊二烯进行至少50个理论塔板和回流比至少为3的分馏。本发明的方法使得能够从羰基化合物实际上完全纯化异戊二烯 和环戊二烯。 当纯化的异戊二烯在立体特异性异戊二烯橡胶的制备中用作单体时，产生高品质的产品; 并在异戊二烯橡胶合成中降低了齐格勒催化剂消耗量的2-3倍。

公开(公告)号：US3867471A

公开(公告)日：1975-02-18

申请号：US32916973

申请日：1973-02-02

Applicant: ALIEV VAGAB SAFAROVICH ,  KASIMOVA ADILYA KHANUM PANAKH ,  MURAVCHIK MARIAM EFIMOVNA ,  TER SARKISOV BENIAMIN GEORGIEV ,  KYAZIMOV SHAMIL KYAZIM OGLY

Inventor： ALIEV VAGAB SAFAROVICH ,  KASIMOVA ADILYA KHANUM PANAKH ,  MURAVCHIK MARIAM EFIMOVNA ,  TER-SARKISOV BENIAMIN GEORGIEV ,  KYAZIMOV SHAMIL KYAZIM OGLY

IPC: C07C5/333 ,  C07C5/18

CPC classification number: C07C5/3332 ,  C07C11/167 ,  C07C11/18

Abstract: The method for preparing hydrocarbons consists of dehydrogenating olefinic hydrocarbons, namely n-butylenes or isoamylenes under isothermal conditions at a temperature of 560* - 600* C over a catalyst consisting of 35 - 50 per cent by weight of Cr2O3, 20 - 30 percent of Fe2O3, 20 - 25 percent of ZnO and 0.5 - 2 per cent by weight of SiO2, with dilution of the starting hydrocarbons with steam in the molar ratio of 1 : 10-20. The said dehydrogenating is effected in a rising current which is a mixture of the starting hydrocarbons, the catalyst and steam, the concentration of the catalyst in said current being 5 - 60 kg/cu.m. Spent catalyst is continuously separated from said current and is recovered in the down-going current. The recovery of the catalyst is effected in a fluid catalyst bed with air at a temperature of 570* - 590* C. The recovered catalyst is continuously returned into the dehydration process, the amount of the catalyst circulating in the system being 80 - 200 times that of the starting hydrocarbons. The reaction products are withdrawn from the system and separated. The proposed method is carried out on a continuous scale and ensures high yields of products (up to 65 percent by weight with respect to the starting hydrocarbons fed into the system), the conversion of the starting hydrocarbons and the selectivity of the process being high.

Abstract translation: 制备烃的方法包括在等温条件下在560-600℃的温度下将烯烃，即正丁烯或异戊烯脱氢，催化剂由35-50重量％的Cr 2 O 3，20-30重量％ Fe 2 O 3，20-25％的ZnO和0.5-2重量％的SiO 2，其中起始烃与摩尔比为1:10-20的蒸汽稀释。 所述脱氢在起始烃，催化剂和蒸汽的混合物的升高电流下进行，催化剂在所述电流中的浓度为5-60kg / cu.m。 废催化剂与所述电流连续分离并在下降电流中回收。 催化剂的回收在具有570〜590℃的空气的流化催化剂床中进行。回收的催化剂连续返回到脱水过程中，在系统中循环的催化剂的量为80-200倍 起始碳氢化合物。 反应产物从系统中取出并分离。 所提出的方法是连续进行的，确保产品的高产率（相对于进料到系统中的起始烃高达65重量％），起始烃的转化率和该方法的选择性高。

公开(公告)号：US3851010A

公开(公告)日：1974-11-26

申请号：US32723873

申请日：1973-01-26

Applicant: SNAM PROGETTI

Inventor： RESCALLI C ,  GINNASI A ,  REBORA P

IPC: B01D3/14 ,  C07C1/00 ,  C07C7/00 ,  C07C7/08 ,  C07C11/18 ,  C07C67/00

CPC classification number: C07C7/005 ,  C07C7/08 ,  C07C11/18

Abstract: D R A W I N G
1. PROCESS RECOVEING ISOPRENE OF POLYMERIZATION GRADE FROM A MIXTURE OF C4 AND C5 HYDROCARBON INCUDING ISOPRENE, COMPRISED OF THE FOLLOWING STEPS; (A) RATIFICATION WHEREIN C4 HYDROCARBONS, LOW BOILING ACETYLENIC COMPOUNDS, 70% TO 90% OF ISOPENTANE ARE WITHDRAWN AS OVERHEAD, AND DIMERIZATION AND POLYMERIZATION PRODUCTS 30% TO 60% OF THE HIGH BOILING HYDROCARBON PRESENT IN THE FEED ARE WITHDRAWN AS BOTTOM PRODUCT, AND THE STREAM CONTAINING ISOPRENE IS WITHDRAWN IN VAPOR PHASE FROM A PLATE OF THE EXHAUST SECTION OF A RECTIFIER; (B) A FIRST EXTRACTIVE DISTILLATION, UTILIZING REFLUX AND SOLVENT, SELECTED FROM THE GROUP CONSISTING OF NFORMYLMORPHOLINE, MORPHOLINE AND MIXTURES OF SAID COMPOUNDS WITH EACH OTHER AND WITH WATER, OBTAINED BY SUBJECTING TO FLASH EVAPORATION THE BOTTOM STREAM OF A SECOND EXTRACTIVE DISTILLATION STEP, WHEREIN MONOCYCLOPENTADIENE, HIGH BOILING ACETYLENIC COMPOUNDS AND 40% TO 70% OF PENTADIENES PRESENTS IN SAID STREAM ARE WITHDRAWN AS BOTTOM PRODUCT AND A STREAM CONTAINING RAW ISOPRENE IS WITHDRAWN AS OVERHEAD WITH OLEFINES, CYCLOPENTENE, AND C5 SATURATED HYDROCARBONS; (C) STRIPPING THE BOTTOM STREAM OF THE FIRST EXTRACTIVE DISTILLATION STEP BY SEPARATING THE SOLVENT FROM MOMOCYCLOPENTADIENE AND OTHER HYDROCARBONS, WHEREIN THE SOLVENT IS RECOVERED AS BOTTOM PRODUCT AND MONOCYCLOPENTADIENE AND OTHER HYDROCARBONS SOLUBLE IN THE SOLVENT ARE DISCHARGED AS OVERHEAD; (D) RECTIFICATION OF THE OVERHEAD HYDROCARBON STREAM FROM THE STRIPPING STEP (C) WHEREIN MONOCYCLOPENTADIENE, THE HIGH BOILING ACETYLENIC COMPOUNDS AND 40% TO 70% BASED ON THE FEEDSTOCK OF THE DIENE COMPOUNDS ARE WITHDRAWN AS BOTTOM PRODUCT AND ISOPRENE CONTAINED IN THE STREAM COMING FROM STRIPPING STEP (C) IS DISCHARGED AS OVERHEAD PRODUCT AND SENT TO THE RECTIFICATION COLUMN OF STEP (A); (E) SECOND EXTRACTIVE DISTILLATION OF THE RAW ISOPRENE STREAM OBTAIN FROM THE FRIST EXTRACTIVE DISTILLATION STEP (B) WHEREIN SAID STREAM IS FED IN VAPOR PHASE AND THE C5 SATURATED AND OLEFINIC COMPOUNDS ARE WITHDRAWN AS OVERHEAD, THE SOLVENT NECESSARY THEREFOR BEING WITHDRAWN FROM THE BOTTOM OF THE STRIPPING COLUMN OF STEP (C); (F) FLASH EVAPORATION OF THE STREAMS DISCHARGED AS BOTTOM PRODUCT IN THE EXTRACTIVE DISTILLATION STEP (E), THE LIQUID PHASE BEING RECYCLED TO THE TOP OF THE FIRST EXTRACTIVE COLUMN FOR SUPPLYING SAID COLUMN BOTH WITH THE EXTRACTIVE SOLVENT AND THE HYDROCARBON STREAM NECESSARY FOR THE REFLUX, THE VAPOR PHASE CONSTITUTED BY ISOPRENE ESSENTIALLY IMPURE FOR CYCLOPENTENE AND CYCLOPENTANE BEING SENT TO A FURTHER RECTIFICATION STEP; (G) RECTIFICATION ELMINATING AS BOTTOM PRODUCT THE STILL PRESENT HEAVY COMPOUNDS, CYCLOPENTENE, CYCLOPENTANE AND THE REMAINING PENTADIENES WITHDRAWING AS OVERHEAD A STREAM OF ISOPRENE CONTAINING TACES OF LOW BOILING COMPOUNDS, WHICH STREAM IS RECYCLED TO THE RECTIFICATION COLUMN OF STEP (A) WITHDRAWING IN LIQUID PHASE FROM A PLATE OF THE UPPER SECTION OF THE RECTIFICATION COLUMN POLYMERIZATION GRADE ISOPRENE.

公开(公告)号：US3846338A

公开(公告)日：1974-11-05

申请号：US27395872

申请日：1972-07-21

Applicant: KACHLOVA R ,  RABINOVICH S ,  MESCHERSKAYA V ,  BYCHKOVSKAYA L ,  BALKHANOVA G ,  NEMTSOV M

Inventor： KACHLOVA R ,  NEMTSOV M ,  BALKHANOVA G ,  BYCHKOVSKAYA L ,  MESCHERSKAYA V ,  RABINOVICH S

IPC: B01J27/18 ,  B01J37/08 ,  B01J37/10 ,  C07C1/247 ,  B01J11/82

CPC classification number: B01J37/10 ,  B01J27/18 ,  B01J27/1806 ,  B01J37/08 ,  C07C1/247 ,  C07C2527/167 ,  Y10S585/906 ,  C07C11/18

Abstract: A method for producing a catalyst on the basis of phosphates of metals belonging to Group II for selective rupturing of BONDS IN ORGANIC COMPOUNDS, AND, IN PARTICULAR, FOR SPLITTING 4,4-DIMETHYL-1,3-DIOXANE INTO ISOPRENE, BY THERMAL PASSIVATION OF PHOSPHATES OF METALS BELONGING TO Group II, at temperatures within the range of 550* to 700*C in an atmosphere of superheated steam or of mixtures thereof with air or with an inert gas.

Abstract translation: 基于属于II族金属的磷酸盐的催化剂的制备方法，用于选择性地破坏有机化合物中的BONDS，特别是用于通过热钝化将4,4-二甲基-1,3-二氧化物分解成异丙基 在过热蒸汽或其与空气或与惰性气体的混合物的气氛中，在550℃至700℃范围内的温度范围内的金属磷酸盐。

公开(公告)号：US3793390A

公开(公告)日：1974-02-19

申请号：US3793390D

申请日：1971-01-20

Applicant: SUMITOMO CHEMICAL CO

Inventor： TAKAGI K ,  MATSUDA T ,  MURAKAMI M

IPC: C07C1/00 ,  C07C1/20 ,  C07C1/213 ,  C07C1/247 ,  C07C2/86 ,  C07C11/18 ,  C07C67/00 ,  C07C1/24

CPC classification number: C07C2/865 ,  C07C1/20 ,  C07C1/213 ,  C07C1/247 ,  C07C2/862 ,  C07C2/864 ,  C07C2/867 ,  C07C2527/053 ,  C07C2527/10 ,  C07C2527/167 ,  C07C2531/02 ,  C07C11/18

Abstract: A METHOD FOR PRODUCING ISOPRENE WHICH COMPRISES REACTING ISOBUTENE AND 4,4-DIMETHYL-1,3-DIOXANE IN A LIQUID PHASE IN THE PRESENCE OF A CATALYST AT A TEMPERATURE FROM 110* TO 180* C. TO GIVE ISOPRENE IN AN EXCELLENT YIELD.

公开(公告)号：US3758611A

公开(公告)日：1973-09-11

申请号：US3758611D

申请日：1971-09-24

Applicant: KURARAY CO

Inventor： DENDA R ,  KAWAGUCHI T

IPC: C07C1/00 ,  C07C1/247 ,  C07C7/11 ,  C07C11/18 ,  C07C67/00 ,  C07C7/00

CPC classification number: C07C1/247 ,  C07C11/18

Abstract: A method of removing aldehydes from an organic layer separated from a condensate of a reaction mixture resulting from the vapor phase catalytic decomposition of 4,4-dimethyl-1,3-dioxane to isoprene, which comprises bringing the organic layer and water into liquid-liquid contact at an elevated temperature of 45*C. or higher to extract the aldehydes out of said organic layer.

Abstract translation: 从由气相催化分解4,4-二甲基-1,3-二恶烷到异戊二烯的反应混合物的冷凝物分离出的有机层中除去醛的方法，其包括使有机层和水成为液体 - 在45℃或更高的升高的温度下液体接触以从所述有机层中提取出醛。

公开(公告)号：US3754050A

公开(公告)日：1973-08-21

申请号：US3754050D

申请日：1971-02-24

Applicant: STAMICARBON

Inventor： DUYVERMAN C ,  MIESSEN J

IPC: C07C7/148 ,  C07C7/12

CPC classification number: C07C7/148 ,  C07C11/167 ,  C07C11/18

Abstract: ALLENES, ACETYLENE AND VINYL CYCLOHEXENES ARE REMOVED FROM CONJUATED DIOLEFINS BY ADSORPTION WITH A MIXTURE OF COPPER OXIDE AND ZINC OXIDE AT A TEMPERATURE BETWEEN 25*C. AND 175*C. .