PROCESS FOR PREPARING HIGH-REACTIVITY ISOBUTENE HOMO- OR COPOLYMERS

Preparation of high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 50 mol % by polymerization of isobutene or isobutene-comprising monomer mixtures in the presence of Lewis acids suitable as polymerization catalysts or of complexes which are effective as polymerization catalysts and are formed from Lewis acids and donors, and in the presence of initiators, wherein the initiators used are organic sulfonic acids Z—SOH in which the variable Z denotes an alkyl radical, haloalkyl radical, cycloalkyl radical, aryl radical or arylalkyl radical. 1. A process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 50 mol % , by polymerization of isobutene or of an isobutene-comprising monomer mixture in the presence of at least one Lewis acid suitable as a polymerization catalyst or of a complex which is effective as a polymerization catalyst and is formed from at least one Lewis acid and at least one donor , and in the presence of at least one initiator , which comprises using , as the at least one initiator , an organic sulfonic acid of the general formula Z—SOH in which the variable Z denotes a C- to C-alkyl radical , C- to C-haloalkyl radical , C- to C-cycloalkyl radical , C- to C-aryl radical or a C- to C-arylalkyl radical.2. The process according to claim 1 , wherein the at least one initiator used is an organic sulfonic acid selected from methanesulfonic acid claim 1 , trifluoromethane-sulfonic acid claim 1 , trichloromethanesulfonic acid and toluenesulfonic acid claim 1 , or mixtures thereof.3. The process according to or claim 1 , in which the Lewis acid used for the complex effective as a polymerization catalyst is at least one compound selected from the binary chlorine and fluorine compounds of the elements of transition groups 1 to 8 and of main groups 3 to 5 of the Periodic Table or ...

Process for preparing isobutene homopolymers or copolymers

Preparation of isobutene homopolymers or copolymers having a number average molecular weight of from 500 to 5 000 000 by polymerization of isobutene or an isobutene-comprising monomer mixture in the presence of a Lewis acid or a complex comprising a Lewis acid as polymerization catalyst, wherein the polymerization is carried out in the presence of at least one hemiacetal or full acetal which can be obtained by protic acid-catalyzed reaction of at least one C 1 -C 12 -hydrocarbyl alcohol with at least one aldehyde or ketone having from 1 to 12 carbon atoms.

PROCESS FOR CONTINUOUSLY PREPARING POLYISOBUTYLENE

Continuous preparation of polyisobutylene having a content of terminal double bonds of more than 50% by polymerizing isobutene in the presence of a polymerization catalyst customary therefor, by combining a technical 1-butene-, 2-butene- and isobutene-containing Chydrocarbon stream together with a stream of pure isobutene and feeding them into the reaction zone in such a way that the steady-state concentration of the isobutene in the combined stream at the feed point of the combined stream into the reaction zone has an average value of at least 40% by weight, and a polymerization plant therefor. 1. A process for continuously preparing polyisobutylene having a content of terminal double bonds of more than 50% by polymerizing isobutene in the presence of a polymerization catalyst customary therefor , which comprises combining a technical 1-butene- , 2-butene- and isobutene-containing Chydrocarbon stream which may comprise up to 3000 ppm by weight of 1 ,3-butadiene together with a stream of pure isobutene and feeding them into the reaction zone in such a way that the steady-state concentration of the isobutene in the combined stream at the feed point of the combined stream into the reaction zone has an average value of at least 40% by weight.2. The process according to claim 1 , wherein the steady-state concentration of isobutene in the combined stream at the feed point of the combined stream into the reaction zone has an average value of 40% by weight to 60% by weight.3. The process according to or claim 1 , wherein the steady-state concentration of isobutene in the combined stream at the feed point of the combined stream into the reaction zone has a substantially constant value which may vary over the course of the polymerization reaction by a maximum of 10% in the upward or downward direction claim 1 , based on the mean isobutene concentration in the combined stream at the feed point.4. A polymerization plant for continuously preparing polyisobutylene having a ...

PROCESS FOR PREPARING HIGHER MOLECULAR WEIGHT POLYISOBUTYLENE

Preparation of isobutene homopolymers having a weight-average molecular weight of 75 000 to 10 000 000 by polymerization of isobutene, by 2. The process according to claim 1 , wherein measures (d) and (e) are both performed.3. The process according to or claim 1 , wherein claim 1 , as measure (a) claim 1 , the polymerization is performed at temperatures of less than −160° C. to −185° C.4. The process according to or claim 1 , wherein claim 1 , as measure (a) claim 1 , the polymerzation is performed at temperatures of −110° C. to −140° C.5. The process according to to claim 1 , wherein measure (a) is executed by bringing the polymerization medium to the required low temperature and keeping it there during the polymerization by means of a separate cooling circuit.6. The process according to to claim 1 , wherein claim 1 , as measure (b) claim 1 , the inert solvent used is ethane claim 1 , ethene claim 1 , propane claim 1 , propene claim 1 , n-butane claim 1 , isobutane or a mixture thereof.7. The process according to to claim 1 , wherein claim 1 , as measure (b) claim 1 , the inert solvent used is 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3 claim 1 ,3 claim 1 ,3-heptafluoropropane claim 1 , octafluoropropane or a mixture thereof.8. The process according to to claim 1 , wherein claim 1 , as measure (c) claim 1 , the polymerization catalyst used is a complex of boron trifluoride and a proton source.9. The process according to claim 8 , wherein claim 8 , as measure (c) claim 8 , the polymerization catalyst used is a complex of boron trifluoride and a C- to C-alkanol.10. The process according to to claim 8 , wherein claim 8 , as measure (d) claim 8 , the polymerization is performed in the presence of at least one reaction accelerator selected from ketones claim 8 , aldehydes claim 8 , ethers claim 8 , acetals and hemiacetals.11. The process according to to claim 8 , wherein claim 8 , as measure (e) claim 8 , the polymerization is performed in the presence of isoprene and ...

BORON TRIFLUORIDE-CATALYST COMPLEX AND PROCESS FOR PREPARING HIGH-REACTIVITY ISOBUTENE HOMOPOLYMERS

A catalyst complex composed of boron trifluoride and a cocatalyst mixture of 10 to 90% by weight of a monohydric primary C- to C-alcohol and 90 to 10% by weight of a monohydric secondary C- to C-alcohol, where the molar ratio of boron trifluoride to the sum of all alcohols is 2:1 to 1:10. This catalyst complex is used in the preparation of high-reactivity isobutene homopolymers having a number-average molecular weight of 300 to 50 000, using, as the feedstock, a Chydrocarbon mixture comprising at least 20% by weight of isobutene and a total of at least 10% by weight of other Colefins. 1. A boron trifluoride-catalyst complex for polymerization of isobutene , consisting of boron trifluoride as a polymerization catalyst and a cocatalyst mixture of(A) 10 to 90% by weight of at least one monohydric primary alcohol having 1 to 20 carbon atoms and(B) 90 to 10% by weight of at least one monohydric secondary alcohol having 3 to 20 carbon atoms,where the molar ratio of boron trifluoride to the sum of all cocatalyst alcohols from (A) and (B) is 2:1 to 1:10.2. The boron trifluoride-catalyst complex according to claim 1 , in which the at least one monohydric primary alcohol (A) is selected from methanol claim 1 , ethanol claim 1 , 1-propanol and 1-butanol.3. The boron trifluoride-catalyst complex according to or claim 1 , in which the at least one monohydric secondary alcohol (B) is selected from isopropanol and 2-butanol.4. A process for preparing high-reactivity isobutene homopolymers having a number-average molecular weight of 300 to 50 000 by polymerizing isobutene in the liquid phase in the presence of a polymerization catalyst based on boron trifluoride claim 1 , where as a feedstock a Chydrocarbon mixture comprising at least 20% by weight of isobutene and a total of at least 10% by weight of other C-olefins claim 1 , which comprises using claim 1 , as the polymerization catalyst claim 1 , a boron trifluoride-catalyst complex according to to .5. The process for preparing ...

PROCESS FOR PREPARING HIGH-REACTIVITY ISOBUTENE HOMO- OR COPOLYMERS

The present invention relates to a process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per homo- or copolymer chain end of at least 70 mol % which comprises polymerizing isobutene or an isobutene-comprising monomer mixture in the presence of an aluminum trihalide-donor complex effective as a polymerization catalyst or of an alkylaluminum halide-donor complex, said complex comprising, as the donor, a mixture of at least two organic compounds with at least one ether function each. 1: A process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol % , the process comprising:polymerizing isobutene or an isobutene-comprising monomer mixture in the presence of an aluminum trihalide-donor complex or an alkylaluminum halide-donor complex,wherein the donor of the aluminum trihalide-donor complex and the donor of the alkylaluminum halide-donor complex independently comprise a mixture comprising a first organic compound comprising an ether functionality and a second organic compound comprising an ether functionality.2: The process according to claim 1 , wherein the aluminum trihalide-donor complex is an aluminum trichloride-donor complex claim 1 , and claim 1 ,wherein the alkylaluminum halide-donor complex is an alkyl aluminum chloride-donor complex, or the alkylaluminum halide-donor complex is a dialkyl aluminum chloride-donor complex.3: The process according to claim 1 , wherein the donor of the aluminum trihalide-donor complex and the donor of the alkylaluminum halide-donor complex comprises claim 1 , as the first and second organic compound claim 1 , a mixture of dihydrocarbyl ethers of formula R—O—R claim 1 , in which the variables Rand Rare each independently selected from the group consisting of C- to C-alkyl radicals claim 1 , C- to C-cycloalkyl radicals claim 1 , C- to C-aryl radicals claim 1 , and C ...

High-reactivity polyisobutylene having a high content of vinylidene double bonds in the side chains

A polyisobutylene having a total content of vinylidene double bonds of more than 50 mol % and a number-average molecular weight of 500 to 10 000 daltons, where at least 10% of all the vinylidene double bonds in the polyisobutylene are part of one or more side chains composed of at least 2 carbon atoms from the main polyisobutylene chain. Such a polyisobutylene is suitable for production of fuel and lubricant additives.

PROCESS FOR PREPARING HIGH-REACTIVITY ISOBUTENE HOMO- OR COPOLYMERS

The present invention relates to a novel process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol %. The present invention further relates to novel isobutene polymers.

Process for preparing high-reactivity isobutene homo- or copolymers

The present invention relates to a novel process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 80 mol %. The present invention further relates to novel isobutene polymers.

PROCESS FOR PREPARING HIGH-REACTIVITY ISOBUTENE HOMO- OR COPOLYMERS

The present invention relates to a novel process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol %. The present invention further relates to novel isobutene polymers. 1. A process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol % , the process comprising:polymerizing isobutene or an isobutene-comprising monomer mixture in the presence at least one Lewis Acid effective as a polymerization catalyst, selected from the group consisting an aluminum trihalide-donor complex, an alkylaluminum halide-donor complex, an iron trihalide-donor complex, a gallium trihalide-donor complex, a titanium tetrahalide-donor complex, a zinc dihalide-donor complex, a tin dihalide-donor complex, and a tin tetrahalide-donor complex, effective as a polymerization catalyst, said complex comprising, as the donor, a mixture of:at least organic compound (II) comprising at least one oxygen or nitrogen atom with at least one lone electron pair, preferably comprising at least one oxygen atom with at least one lone electron pair, very preferably selected from the group consisting of organic compounds with at least one ether function, organic compounds with at least one carboxylic ester function, organic compounds with at least one aldehyde function, organic compounds with at least one keto function, and organic compounds with at least one nitrogen containing heterocyclic ring, andat least one ionic liquid.3. The process according to claim 1 , wherein the ionic liquid comprises an anion selected from the group consisting of fluoride claim 1 , chloride; bromide claim 1 , iodide; thiocyanate; hexafluorophosphate; trifluoromethanesulfonate; methanesulfonate; carboxylates; mandelate; nitrate; nitrite; trifluoroacetate; sulfate; hydrogensulfate; methylsulfate; ethylsulfate; 1-propylsulfate; ...

Process for preparing high-reactivity isobutene homo- or copolymers

The present invention relates to a process for preparing high- reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol %, which comprises polymerizing isobutene or an isobutene-comprising monomer mixture in the presence of an aluminum trihalide-donor complex effective as a polymerization catalyst or an alkylaluminum halide-donor complex effective as a polymerization catalyst, wherein the aluminum trihalide or alkylaluminum halide is treated with at least one inorganic hydrate.

Process for preparing higher molecular weight polyisobutylene

Preparation of isobutene homopolymers having a weight-average molecular weight of 75 000 to 10 000 000 by polymerization of isobutene, by (a) performing the polymerization at −80° C. to −190° C., (b) using, as an inert solvent, optionally halogenated C 1 to C 5 hydrocarbons, (c) using, as a polymerization catalyst, a Lewis acid complex, (d) performing the polymerization in the presence of at least one reaction accelerator in the form of an ethylenically saturated hydrocarbon compound comprising one oxygen atom and no abstractable proton, and (e) performing the polymerization in the presence of at least one chain length regulator comprising one tertiary olefinic carbon atom.

Process for preparing high-reactivity isobutene homo- or copolymers

Process for the preparation of alkyl-, alkenyl and alkinylchlorides

Process for the preparation of alkyl, alkenyl and alkynyl chlorides by reaction of the corresponding alcohols with phosgene or thionyl chloride in the presence of a phosphine oxide as a catalyst, by using aliphatic, cycloaliphatic or cyclic-aliphatic phosphine oxides as catalyst.

Process for preparing higher molecular weight polyisobutylene

The invention relates to the production of isobutylene homopolymers having a weight-average molecular weight of 75,000 to 10,000,000 by means of the polymerization of isobutylene by (a) performing the polymerization at -80?C to - 190?C, (b) using optionally halogenated C1 to C5 hydrocarbons as an inert solvent, (c) using a Lewis acid complex as a polymerization catalyst, and (d) performing the polymerization in the presence of at least one reaction accelerator in the form of an ethylenically saturated hydrocarbon compound, which contains an oxygen atom and no proton that can be emitted, and performing the polymerization in the presence of at least one chain length regulator, which contains a tertiary olefinic carbon atom.

Production of polyisobutene, used e.g. as intermediate for lubricating oil and fuel additives, involves polymerization using boron trifluoride catalyst with cyanide or nitrile as moderator and/or contacting product with inorganic adsorbent

Production of polyisobutene with number average molecular weight Mn 400-50000 and over 50 mole-% methylidene groups by polymerization of a reaction mixture containing isobutene in the presence of a catalyst containing boron trifluoride, is carried out at least partly in the presence of hydrogen cyanide or a cyanide or nitrile as moderator (I) and/or the reaction mixture is contacted with an inorganic adsorbent after polymerization in the presence of (I).

Process for preparing high-reactivity isobutene homo- or copolymers

The present invention relates to a novel process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol%. The present invention further relates to novel isobutene polymers.

Process for continuously preparing polyisobutylene

Continuous preparation of polyisobutylene having a content of terminal double bonds of more than 50% by polymerizing isobutene in the presence of a polymerization catalyst customary therefor, by combining a technical 1-butene-, 2-butene- and isobutene-containing C4 hydrocarbon stream together with a stream of pure isobutene and feeding them into the reaction zone in such a way that the steady-state concentration of the isobutene in the combined stream at the feed point of the combined stream into the reaction zone has an average value of at least 40% by weight, and a polymerization plant therefor.

Production of polyisobutene, preferably of high molecular weight, involves polymerization by contacting isobutene droplets with Lewis acid containing halogen as catalyst using inert diluent, preferably as lower liquid reservoir zone

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Polyisobuten durch Polymerisation von Isobuten unter Verwendung eines inerten Verdünnungsmittels und einer halogenhaltigen Lewis-Säure als Katalysator, wobei man das Isobuten in Form von Tröpfchen in einer Polymerisationsvorrichtung mit der Lewis-Säure in Kontakt bringt.

Method For Producing a Polyisobutene

The invention relates to a process for preparing polyisobutene having a mean molecular weight M n of from 400 to 50 000, in particular from 500 to 10 000, by polymerizing isobutene in the presence of a BF 3 -containing complex catalyst, wherein the polymerization is carried out at least temporarily in the presence of one or more cyclic ethers.

Isobutene polymerisation in the presence of complexes of electrondonors and fluorinated acids

The invention relates to a method for producing mainly ethylenically unsaturated isobutene polymers, wherein the sum of proportions of molecules with a double bond in an α position and molecules with a double bond in a position β is increased to 75 %mol by polymerising isobutene in a liquid phase in the presence of a diluted or dispersed catalyst complex which comprises (i) an electron donor and (ii) a compound of general formula (I) Ha Meb [MFx]c, wherein Me is a metal with oxidation state m, M is an element selected from elements of the groups 2, 3, 4, 5, 10, 11, 13, 14 or 15 of the periodic table according to the IUPAC notation of an element oxidation number n, a is an integer ≥1, b is an integer ≥0, x is an integer ≥2 and c is [(a+mb)/(x-n)]. The catalyst is preferably embodied in the form of HBF4 O(CH3)2. The inventive method makes it possible to obtain an isobutene polymer having a low fluorine-content even using technical C4 hydrocarbon portions as an isobutene source.

Method for producing polyisobutene

The invention relates to a method for producing polyisobutene by polymerization of isobutene using an inert diluent and a halogenated Lewis acid as the catalyst. Said method is characterized by contacting a liquid mixture of the isobutene and the inert diluent with the catalyst in the gas chamber of a polymerization device.

Method for the continuous production of polyisobutylene

Continuous production of polyisobutylene having a content of terminal double bonds of greater than 50% by polymerization of isobutene in the presence of a polymerization catalyst usual therefor, by combining a technical 1-butene-, 2-butene- and isobutene-containing C4 hydrocarbon stream together with a stream of pure isobutene, and feeding the combined stream into the reaction zone in such a manner that the steady state concentration of isobutene in the combined stream at the point where the combined stream is fed into the reaction zone has a value of on average at least 40% by weight, and the invention also relates to a polymerization system therefor.

Method for producing polyisobutene

The invention relates to a method for producing polyisobutene by polymerization of isobutene using an inert diluent and a halogenated Lewis acid as the catalyst. Said method is characterized by contacting a liquid mixture of the isobutene and the inert diluent with the catalyst in the gas chamber of a polymerization device.

Method for the processing of a liquid reaction discharge of the cationic polymerisation of isobutene

The invention relates to a method for processing a liquid reaction discharge of the cationic polymerisation of isobutene, which essentially consists of polyisobutene, unconverted isobutene and an inert diluent. According to said method, the reaction discharge is heated and expanded in an expansion chamber, whereby as a result of said expansion, the reaction discharge is separated into a liquid phase containing the polyisobutene and a gas phase containing the bulk of the isobutene contained in the reaction discharge and of the diluent.

Method for the processing of a liquid reaction discharge of the cationic polymerization of isobutene

A process for working up a liquid reaction discharge of the cationic polymerization of isobutene, which substantially comprises polyisobutene, unconverted isobutene and an inert diluent, in which the reaction discharge is heated and is let down into a flash container, is described, the reaction discharge separating, as a result of the flashing, into a polyisobutene-containing liquid phase and a gas phase containing the main amount of the isobutene contained in the reaction discharge and of the diluent.

Method for the processing of a liquid reaction discharge of the cationic polymerization of isobutene

A process for working up a liquid reaction discharge of the cationic polymerization of isobutene, which substantially comprises polyisobutene, unconverted isobutene and an inert diluent, in which the reaction discharge is heated and is let down into a flash container, is described, the reaction discharge separating, as a result of the flashing, into a polyisobutene-containing liquid phase and a gas phase containing the main amount of the isobutene contained in the reaction discharge and of the diluent.

Method for producing a polyisobutene

The invention relates to a method for producing a polyisobutene with a molecular weight Mn of 400 to 50000, particularly 500 to 10000 by polymerizing isobutene in the presence of a BF3-containing complex catalyst, during which the polymerization is carried out, at least in part, in the presence of one or more cyclic ethers.

Method for synthesizing cyclohexyl-substituted phosphines

The present invention relates to a process for preparing cyclohexyl-substituted phosphines. The invention further relates to a process for preparing cyclohexyl-substituted phosphine oxides which can be used as intermediates in the preparation of cyclohexyl-substituted phosphines.

Reduction of the content of compounds containing oxygen and/or nitrogen in material flows containing isobutene

The invention relates to a method for reducing the content of compounds containing oxygen and/or nitrogen in material flows having an isobutene content of at least 10 wt. %. According to said method, the material flow is guided over a fixed bed of an acid-free zeolite having a mean pore size of between 0.3 and 1.5 nm, in a liquid phase, at a temperature T [in K] and at a linear speed v [in cm/min], the fixed bed having a dimension I [in cm] in the flow direction of the material flow, and T, v and I obeying the equation 2<(T-283 k)/10 K >l/v = 500 min. The inventive method prevents the formation of isobutene oligomers.

Method for producing polyisobutenes

The preparation of halomethylbenzoyl cyanides

A process is disclosed for preparing halogenated methyl benzoyl cyanides having the formula (I): PH-CO-CN, in which Ph stands for a phenyl rest substituted by chloromethyl or bromomethyl that may optionally carry 1-4 other rests, from halogenated methyl benzoyl chlorides having the formula (II): PH-CO-Cl. The compound having the formula (II) is reacted with a cyanide-releasing compound in the presence of a Lewis acid, optionally in an inert organic solvent or diluent, and the product obtained by this process is then isolated. The halogenated methyl benzoyl cyanides having the formula (I) are important intermediate products for the synthesis of plant protective agents.

METHOD FOR PRODUCING POLYISOBUTYLENE, CONTAINING A TOTAL DOUBLE BONDING CONTENT OF MORE THAN 50% FROM A TECHNICAL 1-BUTEN, 2-BUTENE

POLYMERIZATION OF ISOBUTES IN THE PRESENCE OF COMPLEXES OF ELECTRON ENDORS WITH FLUOROUS ACIDS

Preparation of o-chloromethylbenzoyl chlorides

A process for preparing o-chloromethylbenzoyl chlorides of the formula I (see formula I) where m is 0 or an integer from 1 to 4 and X is halogen or C-organic radicals, entails reacting a corresponding lactone of the formula II (see formula II) with thionyl chloride in the presence of a catalyst.

NSAUSTRAGES OF CATIONIC POLYMERIZATION OF ISOBUTEN

Process for preparing high-reactivity isobutene homo- or copolymers

The present invention relates to a novel process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol %. The present invention further relates to novel isobutene polymers.

Method for deactivating and recovering boron trifluoride when producing polyisobutenes

The invention relates to a method for deactivating and recovering boron trifluoride when producing polyisobutenes by means of cationic polymerisation of isobutene or hydrocarbon streams containing isobutene in the liquid phase in the presence of boron trifluoride or in the form of a boron trifluoride catalyst complex. Said catalyst complex is separated, essentially in the liquid phase, from the reactor discharge. Said method contains the following steps, a) removing from the polymerisation reactor at -60 to 0 ~C, methanol, ethanol or a mixture of methanol and ethanol in such a quantity that an alcohol phase rich in boron trifluoride is deposited b) separating the alcohol phase according to (a) and, (c) from the alcohol phase according to (b) is reintegrated into the inventive method in a suitable manner if desired.

Preparation of aryl chloroformates

A process for the preparation of aromatic aryl chloroformates of the general formula I ##STR1## in which Ar denotes an aryl radical optionally mono- to penta-substituted by C 1 -C 20 -alkyl, C 2 -C 20 -alkenyl, C 3 -C 8 -alkyl-cycloalkyl, C 1 -C 20 -haloalkyl, C 1 -C 20 -alkoxy, C 1 -C 20 -alkylthio, halo, cyano, C 2 -C 20 -alkylcarbonyloxy, C 3 -C 20 -carboalkoxy, formyl, C 2 -C 20 -dialkylamino, aryl, aryloxy, arylthio, aroyl, C 7 -C 20 -aralkyl, C 7 -C 20 -aralkoxy, arylsulfonyl and/or C 7 -C 20 -aralkylthio and/or optionally mono- or di-substituted by chloroformyl and/or nitro, from phosgene and phenols of the general formula II Ar--OH (II), in which Ar has the meanings stated above and optionally carries one or two hydroxy groups, wherein the reaction is carried out at a temperature of from 60° to 180° C. in the presence of an organic phosphorus compound of the general formula III ##STR2## in which at least one of the radicals R 1 , R 2 , and R 3 stands, irrespective of the others, for --NR 5 R 6 or --O--R 7 and R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 independently denote C 1 -C 20 -alkyl, C 2 -C 20 -alkenyl, halo, aryl, or C 7 -C 20 -aralkyl and R 1 and R 2 , R 1 and R 3 , R 2 and R 3 , and R 5 and R 6 each denote a saturated or unsaturated C 2 -C 5 -alkylene chain, X denotes hydroxy, aryloxy, halo, or an inorganic or organic acid anion, R 4 denotes hydrogen or C 1 -C 20 -alkyl or halo when X stands for halo, aryloxy, or aralkoxy, n is equal to 0 or 1, and R 4 and X can together denote oxygen or sulfur.

Process for preparing halogenated methyl benzoyl cyanides

Method for the continuous production of polyisobutylene

Process for preparing high-reactivity isobutene homo- or copolymers

Process for preparation of polyisobutylene whose content of terminal double bonds is more than 50% from an industrial c4 hydrocarbon stream comprising 1-butene, 2-butene and isobutene

Boron trifluoride catalyst complex and method for producing highly reactive isobutene homopolymers

The invention relates to a catalyst complex comprising boron trifluoride and a co-catalyst mixture of 10 to 90 wt% of a monovalent primary C1 to C20 alcohol and 90 to 10 wt% of a monovalent secondary C3 to C20 alcohol, wherein the molar ratio of boron trifluoride to the sum of all alcohols is 2:1 to 1:10. Said catalyst complex is used in the production of highly reactive isobutene homopolymers having a number-average molecular weight of 300 to 50,000, wherein a C4 hydrocarbon mixture containing at least 20 wt% of isobutene and in total at least 10 wt% of other C4 olefins is used as a feed material.

Reduction of the content of compounds containing oxygen and/or nitrogen in material flows containing isobutene

The invention relates to a method for reducing the content of compounds containing oxygen and/or nitrogen in material flows having an isobutene content of at least 10 wt. %. According to said method, the material flow is guided over a fixed bed of an acid-free zeolite having a mean pore size of between 0.3 and 1.5 nm, in a liquid phase, at a temperature T [in K] and at a linear speed v [in cm/min], the fixed bed having a dimension I [in cm] in the flow direction of the material flow, and T, v and I obeying the equation 2(T-283 k)/10 K l/v ≤ 500 min. The inventive method prevents the formation of isobutene oligomers.

New halomethyl-benzoyl cyanide cpds. - useful as agrochemical intermediates

Halomethyl-benzoyl cyanides of formula (I) are new: X = halogen, 1-4C alkyl, 1-4C alkoxy, CF3 and/or CR=NOR'; R = 1-5 alkyl; R' = 1-5C alkyl or 2-5C alkenyl; m = 0-4; Y = CH2Cl or CH2Br. USE - (I) are intermediates for plant protection agents, e.g. 4-phenylpyrazole herbicides (EP352543) or phenylglyoxylate oxime ether fungicides, acaricides or insecticides (DE4042271/2).

process for the preparation of high reactivity isobutene homo or copolymers

A presente invenção refere-se a um novo processo para a preparação de homo ou copolímeros de isobuteno de alta reatividade com um teor de ligações duplas de vinilideno terminais por extremidade da cadeia de poliisobuteno de pelo menos 70% em mol. A presente invenção refere-se ainda a novos polímeros de isobuteno. The present invention relates to a new process for the preparation of highly reactive isobutene homo or copolymers with a terminal vinylidene double bond content per end of the polyisobutene chain of at least 70 mol%. The present invention also relates to new isobutene polymers.

Method of obtaining halogenomethyl-benzoil cyanides and novel halogenomethyl-benzoyl cyanides

1. Sposób wytwarzania cyjanków halogenometylo-benzoilu o wzorze ogólnym 1, w którym PH oznacza rodnik fenylowy podstawiony chlorometylem albo bromome- tylem i ewentualnie jeszcze dalszymi 1 do 4 rodnikami obojetnymi dla reakcji wymiany, znamienny tym, ze chlorek halogenomety- lo-benzoilu o wzorze ogólnym 2 poddaje sie reakcji wymiany z cyjankiem metalu alkalicz- nego albo cyjankiem metalu przejsciowego, ewentualnie w rozcienczalniku i ewentualnie w obecnosci katalizatora. S C H E M A T PL PL A process for the preparation of halogenomethyl-benzoyl cyanides of the general formula I, in which PH is a phenyl radical substituted with chloromethyl or bromomethyl and optionally with further 1 to 4 radicals inert for the exchange reaction, characterized in that a halogenomethyl-benzoyl chloride of the formula overall 2 is reacted with an alkali metal cyanide or transition metal cyanide, optionally in a diluent, and optionally in the presence of a catalyst. S C H E M A T PL PL

Preparation of alkenes and of cyclopentane and cyclohexane

Preparation of alkenes as well as of cyclopentane and cyclohexane from the corresponding vicinal dichloro and dibromo alkanes and from α,ω-Dichloropentane and α,ω-dibromopentane and α,ω-dichlorohexane and α,ω-dibromohexane respectively, in which these starting compounds are caused to react with with silicon.

Process for preparing halogenated methyl benzoyl cyanides

Method for deactivating and recovering boron trifluoride when producing polyisobutenes

A találmány tárgya eljárás bór-trifluorid dezaktiválására ésvisszanyerésére a poliizobutének olyan gyártásakor, amikor izobuténtvagy izobutén-tartalmú szénhidrogénáramokat folyékony fázisban, bór-trifluorid vagy bór-trifluorid-katalizátorkomplex jelenlétébenkationosan polimerizálnak, és amikor a katalizátorkomplexet lényegébenfolyékony fázis formájában a reaktorból kilépő reakcióelegytőlelválasztják, hogy a) a polimerizációs reaktorból kilépőreakcióelegyhez -60 °C és 0°Cközötti hőmérsékleten metanolt, etanoltvagy metanol és etanol elegyét olyan mennyiségben adagolják, hogy egybór-trifluoridban gazdag alkoholos fázis különüljön el, és b) az a)pont szerinti alkoholos fázist elválasztják, és c) a b) pont szerintialkoholos fázisban található bór-trifluoridot adott esetben megfelelőmódon az eljárásba visszavezetik. Ó The present invention relates to a process for the deactivation and recovery of boron trifluoride in the production of polyisobutenes in which isobutene- or isobutene-containing hydrocarbon streams are cationically polymerized in the presence of a liquid phase, in the presence of methanol, ethanol or a mixture of methanol and ethanol is added to the reaction mixture leaving the polymerization reactor at a temperature between -60 ° C and 0 ° C in such an amount as to separate the alcoholic phase rich in boron trifluoride, and b) separating the alcoholic phase according to a), and c) ab ), the boron trifluoride in the alcoholic phase is optionally recycled in an appropriate manner. HE

Process and apparatus for continuously polymerizing cationically polymerizable monomers

The present invention relates to a process and to an apparatus for continuous living polymerization of cationically polymerizable monomers, in which at least three feedstocks are mixed in one or more mixers with microstructures and then polymerized in at least one reaction zone.

Process for the preparation of alkyl, alkenyl and alkynyl chlorides.

Preparation of halomethylbenzoly cyanides and novel halomethylbenzoyl cyanides

A process for preparing halomethylbenzoyl cyanides I Ph-CO-CN I (Ph=phenyl radical substituted by chloromethyl or bromomethyl which, if desired, can additionally carry 1-4 further radicals) by reacting halomethylbenzoyl chlorides II Ph-CO-Cl II with an alkali metal cyanide or transition metal cyanide, if appropriate in an organic diluent, and novel halomethylbenzoyl cyanides I' ##STR1## (X=halogen, C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy, CF 3 , C 1 -C 5 -alkyl-(C 1 -C 5 -alkyl)hydroxyimino or C 1 -C 5 -alkyl-(C 2 -C 5 -alkenyl)hydroxyimino; m=0 to 4 and Y=chloromethyl or bromomethyl) are described. The halomethylbenzoyl cyanides I are important intermediates for the synthesis of plant protection agents.

Process for preparing high-reactivity isobutene homo- or copolymers

The present invention relates to a novel process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol%. The present invention further relates to novel isobutene polymers.

Process for preparing high-reactivity isobutene homo- or copolymers

The present invention relates to a novel process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol%. The present invention further relates to novel isobutene polymers.

Polyalkene amines with improved applicational properties

Process for the preparation of aromatic o-chloromethyl carboxylic acid chlorides

Aromatic o-chloromethylcarboxylic acid chlorides of the general formula I <IMAGE> in which R<1>, R<2>, R<3> and R<4> denote hydrogen, C1- to C20-alkyl, aryl or halogen, or R<1> and R<2>, R<1> and R<3>, R<1> and R<4>, R<2> and R<3>, R <2 and R<4> or R<3> and R<4> together denote a C1- to C6-alkylene chain or buta-1,3-dienyl are prepared by reacting benzo-fused lactones of the general formula II <IMAGE> in which R<1>, R<2>, R<3> and R<4> have the abovementioned meanings, with phosgene at temperatures of from 100 to 240 DEG C in the presence of a catalyst.

Magnetically separable catalysts

Disclosed are catalysts based on: a) a magnetizable core which, b) can as needed be coated with a binder, and c) carries on its surface catalytically active metals or metallic compounds.

Process for preparing high-reactivity isobutene homo- or copolymers

The present invention relates to a process for preparing high- reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per homo- or copolymer chain end of at least 70 mol% which comprises polymerizing isobutene or an isobutene- comprising monomer mixture in the presence of an aluminum trihalide-donor complex effective as a polymerization catalyst or of an alkylaluminum halide-donor complex, said complex comprising, as the donor, a mixture of at least two organic compounds with at least one ether function each.

Process for the preparation of halo methyl benzoyl cyanides

Boron trifluoride-catalyst complex and process for preparing high-reactivity isobutene homopolymers

The invention relates to a catalyst complex comprising boron trifluoride and a co-catalyst mixture of 10 to 90 wt% of a monovalent primary C1 to C20 alcohol and 90 to 10 wt% of a monovalent secondary C3 to C20 alcohol, wherein the molar ratio of boron trifluoride to the sum of all alcohols is 2:1 to 1:10. Said catalyst complex is used in the production of highly reactive isobutene homopolymers having a number-average molecular weight of 300 to 50,000, wherein a C4 hydrocarbon mixture containing at least 20 wt% of isobutene and in total at least 10 wt% of other C4 olefins is used as a feed material.

Method for deactivating and recovering boron trifluoride when producing polyisobutenes

Highly reactive polyisobutylene having a high percentage of vinylidene double bonds in the side chains

Reduction of the content of compounds containing oxygen and/or nitrogen in material flows containing isobutene

A process for reducing the content of oxygen-containing and/or nitrogen-containing compounds in streams having an isobutene content of at least 10% by weight, which comprises passing the stream in the liquid state at a temperature T [in K] and a linear velocity v [in cm/min] over a fixed bed of an acid-free zeolite having a mean pore size of from 0.3 to 1.5 nm, where the fixed bed has a length l [in cm] in the flow direction of the stream and T, v and l obey the relationship 2 (T−283 K)/10 K ·l/v ≦500 min, is described. The process avoids the formation of isobutene oligomers.

Preparation of halomethylbenzoyl cyanides and novel halomethylbenzoyl cyanides

A process for preparing halomethylbenzoyl cyanides I Ph-CO-CN I (Ph = phenyl radical substituted by chloromethyl or bromomethyl which, if desired, can additionally carry 1 - 4 further radicals) by reacting halomethylbenzoyl chlorides II Ph-CO-C1 II with an alkali metal cyanide or transition metal cyanide, if appropriate in an organic diluent, and novel halomethylbenzoyl cyanides I' (see formula I') (X = halogen, C1-C4-alkyl, C1-C4-alkoxy, CF3, C1-C5-alkyl-(C1-C5-alkyl)hydroxyimino or C1-C5-alkyl-(C2-C5-alkenyl)hydroxyimino; m = 0 to 4 and Y = chloromethyl or bromomethyl) are described. The halomethylbenzoyl cyanides I are important intermediates for the synthesis of plant protection agents.

Method for producing a polyalkenyl amine

The invention relates to a method for producing a polyalkenyl amine in which the solvent used for the production is exchanged for a different solvent.

Polyalkene amines with improved applicational properties

METHOD FOR HYDROGENATING AROMATIC COMPOUNDS IN WHICH AT LEAST ONE AMINO GROUP IS TIED TO AN AROMATIC CORE

Verfahren zur herstellung von 0- chloromethylbenzoesäurechloriden

Verfahren zur desaktivierung und rückgewinnung von bortrifluorid bei der herstellung von polyisobutenen

Verfahren zur herstellung von halogenmethyl- benzoylcyaniden

Verfahren zur herstellung von polyisobuten

Verfahren zur herstellung von polyisobutylen mit einem gehalt an endständigen doppelbindungen von mehr als 50 aus einem technischen 1-buten-, 2- buten- und isobuten-haltigen c4- kohlenwasserstoffstrom

Verfahren zur herstellung von polyisobuten hoher qualität

Processo para a preparação de homo ou copolímeros de isobuteno de alta reatividade

A presente invenção refere-se a um novo processo para a preparação de homo ou copolímeros de isobuteno de alta reatividade com um teor de ligações duplas de vinilideno terminais por extremidade da cadeia de poliisobuteno de pelo menos 70% em mol. A presente invenção refere-se ainda a novos polímeros de isobuteno.

Process for manufacturing of polyisobutene succinic anhydrides

The present invention concerns a process for manufacturing polyisobutene succinic anhydrides from certain polyisobutene mixtures.

Process for manufacturing of polyisobutene succinic anhydrides

The present invention concerns a process for manufacturing polyisobutene succinic anhydrides from certain polyisobutene mixtures.

Fungizide carbamoyloximcarbonsäureamide

Hidrogenacion de compuestos aromaticos en los cuales al menos un grupo amino es unido a un nucleo aromatico.

Compuestos aromáticos en los cuales al menos un grupo amino es unido a un nucleo aromático son hidrogenos por un proceso en el cual el catalizador comprende rutenio y, si se requiere, al menso un metal del subgrupo I, VII o bien VIII en una cantidad de 0.01 a 30% en peso, en bese al peso total del catalizador; son aplicados a un vehículo y el vehículo tiene un diámetro promedio de poro de al menos 0.1 æm y una área superficial no mayor que 15 m2/g.

Způsob hydrogenace aromatických sloučenin, jejichž alespoň jedna aminoskupina je vázána na aromatické jádro

Hidrogenacion de compuestos aromaticos en los cuales al menos un grupo amino es unido a un nucleo aromatico.

Způsob hydrogenace aromatických sloučenin a katalyzátor k provádění této hydrogenace

Způsob hydrogenace aromatických sloučeninŹ ve kterých přinejmenším jedna aminoskupina je vázána na aromatické jádroŹ při kterém přinejmenším jedna z těchto sloučenin se uvede do kontaktu s volným vodíkem v přítomnosti katalyzátoru obsahujícího ruthenium a v případě potřeby přinejmenším jeden kov z podskupiny IŹ VII nebo VIII v množství v rozmezí od @Ź@� @ do @ @ hmotnostníchŹ vztaženo na celkovou hmotnost katalyzátoruŹ a aplikovaným na nosičový materiálŹ který má průměrný průměr pórů přinejmenším @Ź� @mi@m a povrchovou plochu maximálně �Q m@sup@n@gramŹ přičemž tento nosičový materiál je zvolen ze skupiny zahrnující aktivní uhlíkŹ karbid křemíkuŹ oxid hlinitýŹ oxid křemičitýŹ oxid titaničitýŹ oxid zirkoničitýŹ oxid hořečnatýŹ oxid zinečnatý a směsi těchto látek@ Do rozsahu řešení náleží rovněž i katalyzátor a jeho použití pro hydrogenaci aromatických sloučeninŕ

Polyalkenamine mit verbesserten anwendungseigenschaften

Method for Producing a Polyalkenyl Amine

The present invention relates to a process for preparing a polyalkenylamine, in which the solvent used for the reaction is exchanged for a different solvent.

Polyisobutene with high content of certain double bond isomers

The present invention concerns polyisobutene mixtures with an increased content of polyisobutene isomers with a beta-double bond.

Verfahren zur herstellung von halogenmethylbenzoylcyaniden und neue halogenmethyl-benzoylcyanide

Polyisobutene composition

Process for preparing high-reactivity isobutene homo- or copolymers

The present invention relates to a novel process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol%. The present invention further relates to novel isobutene polymers.

Verfahren zur herstellung von polyisobutenen

Verfahren zur aufarbeitung eines flüssigen reaktionsaustrages der kationischen polymerisation von isobuten

Verfahren zur herstellung von polyisobutenen

Process for preparing high-reactivity isobutene homo- or copolymers

The present invention relates to a process for preparing high- reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol%, which comprises polymerizing isobutene or an isobutene-comprising monomer mixture in the presence of an aluminum trihalide-donor complex effective as a polymerization catalyst or an alkylaluminum halide-donor complex effective as a polymerization catalyst, wherein the aluminum trihalide or alkylaluminum halide is treated with at least one inorganic hydrate.

Process for preparing high-reactivity isobutene homo- or copolymers

The present invention relates to a process for preparing high- reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per homo- or copolymer chain end of at least 70 mol% which comprises polymerizing isobutene or an isobutene- comprising monomer mixture in the presence of an aluminum trihalide-donor complex effective as a polymerization catalyst or of an alkylaluminum halide-donor complex, said complex comprising, as the donor, a mixture of at least two organic compounds with at least one ether function each.

Amidas del acido carbamoiloximcarboxilico fungicidas.

LA INVENCION SE REFIERE A AMIDA ACIDO CARBOXILICO CARBAMOILOXIMA DE LA FORMULA GENERAL I ASI COMO SUS SALES, EN DONDE LOS RESTOS R1 HASTA R7 TIENEN EL SIGUIENTES SIGNIFICADO: R1 SIGNIFICA ALQUIL EVENTUALMENTE SUSTITUIDO, ALQUENIL, ALQUINIL, CICLOALQUIL, CICLOALQUENIL, ARIL O HETEROARIL; R2 ES HIDROGENO O UN RESTO R1 O R1 Y R2 CONJUNTAMENTE CON EL ATOMO DE C, QUE PORTAN, PUEDEN FORMAN UN RESTO FLUORENIL O CARBOCICLICO O HETEROCICLO EVENTUALMENTE SUSTITUIDO; R3 ES HIDROGENO, ALQUIL EVENTUALMENTE HALOGENADO O CICLOALQUIL; R4 ES ALQUIL EVENTUALMENTE SUSTITUIDO, CICLOALQUIL O FENILALQUIL; R5 ES HIDROGENO O UN RESTO R4 O R4 Y R5 CONJUNTAMENTE CON EL ATOMO DE C AL QUE ESTAN UNIDOS, PUEDEN FORMAN UN CARBOCICLO O HETEROCICLO EVENTUALMENTE SUSTITUIDO; R6 ES HIDROGENO, ALQUIL EVENTUALMENTE HALOGENADO O CICLOALQUIL; R7 ES ALQUIL EVENTUALMENTE SUSTITUIDO, ALQUENIL, CICLOALQUIL, CICLOALQUENIL, ARIL O HETEROARIL; R6 Y R7 CONJUNTAMENTE CON EL ATOMO DE NITROGENO AL QUE ESTAN LIGADOS SON UN CARBOCICLO EVENTUALMENTE SUSTITUIDO O PUEDEN FORMAR HETEROCICLO, ASI COMO UN PROCESO PARA SU ELABORACION, LOS MEDIOS QUE LO CONTIENEN Y SU UTILIZACION.

Hydrogenation of aromatic compounds in which at least one amino group is united to an aromat nucleus

Procedimiento para la hidrogenacion de compuestos aromaticos, en los que al menos un grupo hidroxilo esta unido a un nucleo aromatico.

LA PRESENTE INVENCION ESTA RELACIONADA CON UN METODO PARA HIDROGENAR COMPUESTOS AROMATICOS QUE PRESENTAN COMO MINIMO UN GRUPO HIDROXILO UNIDO A UN NUCLEO AROMATICO. EN ESTE METODO SE PONEN EN CONTACTO COMO MINIMO UNO DE ESTOS COMPUESTOS EN PRESENCIA DE UN CATALIZADOR CON HIDROGENO LIBRE, EN DONDE EL CATALIZADOR TIENE RUTENIO Y OPCIONALMENTE COMO MINIMO UN METAL DE LOS SUBGRUPOS I, VII O VIII EN UNA CANTIDAD ENTRE EL 0,01 Y EL 30 % EN PESO, PREFERIBLEMENTE ENTRE EL 0,2 Y EL 15 % EN PESO, REFERIDO AL PESO TOTAL DEL CATALIZADOR, SOBRE UN PORTADOR. ESTE PORTADOR PRESENTA UN DIAMETRO MEDIO DE PORO DE COMO MINIMO 0,1 {MI}M, PREFERIBLEMENTE COMO MINIMO 0,5 {MI}M, Y UNA SUPERFICIE DE COMO MAXIMO 15 M{SUP,2}/G, PREFERIBLEMENTE COMO MAXIMO 10 M{SUP,2}/G.

Process for preparing high-reactivity isobutene homo- or copolymers

The present invention relates to a process for preparing high- reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol%, which comprises polymerizing isobutene or an isobutene-comprising monomer mixture in the presence of an aluminum trihalide-donor complex effective as a polymerization catalyst or an alkylaluminum halide-donor complex effective as a polymerization catalyst, wherein the aluminum trihalide or alkylaluminum halide is treated with at least one inorganic hydrate.

Polyisobutene with high content of certain double bond isomers

Polyisobutene mixtures are made with an increased content of polyisobutene isomers with a beta-double bond.