Abstract: A process for preparing xylylenediamine, comprising the steps of ammoxidizing xylene to phthalonitrile by contacting the vaporous product of this ammoxidation stage directly with a liquid organic solvent (quench), removing products having a boiling point higher than phthalonitrile (high boilers) from the resulting quench solution or suspension and hydrogenating the phthalonitrile, wherein the organic solvent used for the quench is N-methyl-2-pyrrolidone (NMP), after the removal of the high boilers and before the hydrogenation, there is a partial or complete removal of the NMP and/or of products having a boiling point lower than phthalonitrile (low boilers) and the phthalonitrile for the hydrogenation step is dissolved or suspended in an organic solvent or in liquid ammon.

Abstract: A process for preparing xylylenediamine, comprising the steps of ammoxidizing xylene to phthalonitrile, by contacting the vaporous product of the ammoxidation stage directly with a liquid organic solvent (quench), and hydrogenating the phthalonitrile in the resulting quench solution or suspension, wherein the organic solvent is N-methyl-2-pyrrolidone (NMP).

Abstract: A process for preparing xylylenediamine, comprising the steps of ammoxidizing xylene to phthalonitrile by contacting the vaporous product of this ammoxidation stage directly with a liquid organic solvent (quench), removing products having a boiling point higher than phthalonitrile (high boilers) from the resulting quench solution or suspension and hydrogenating the phthalonitrile, wherein the organic solvent used for the quench is N-methyl-2-pyrrolidone (NMP), after the removal of the high boilers and before the hydrogenation, there is a partial or complete removal of the NMP and/or of products having a boiling point lower than phthalonitrile (low boilers) and the phthalonitrile for the hydrogenation step is dissolved or suspended in an organic solvent or in liquid ammon

Abstract: A configurable vehicle seat having at least two configurations is disclosed. The configurable vehicle seat has a seat base, a seat bottom supported by the seat base, and a seat back coupled to the seat base. The seat back or seat bottom has one or more adjustable profile members, wherein the adjustable profile members may be adjusted such that the seat is adjusted from at least a first configuration to a second configuration.

Abstract: A process for preparing xylylenediamine by continuously hydrogenating liquid phthalonitrile over a heterogeneous catalyst in the presence of liquid ammonia in a reactor, in which a portion of the reactor effluent is recycled as a liquid circulation stream continuously to the reactor inlet (circulation mode), in which a stream of a phthalonitrile melt in liquid form is conducted by means of a mixer unit into the circulation stream around the hydrogenation reactor, the phthalonitrile conversion in the reactor on single pass being greater than 99%, and the circulation stream consisting to an extent of greater than 93% by weight of liquid ammonia and xylylenediamine and not comprising any further solvent for phthalonitrile.

Abstract: A process for preparing xylylenediamine, comprising the steps of ammoxidizing xylene to phthalonitrile and hydrogenating the phthalonitrile, which comprises contacting the vaporous product of the ammoxidation stage directly with a liquid organic solvent or with molten phthalonitrile (quench), partly or fully removing components having a boiling point lower than phthalonitrile (low boilers) from the resulting quench solution or suspension or phthalonitrile melt and, after the low boiler removal and before the hydrogenation, removing products having a boiling point higher than phthalonitrile (high boilers).

Abstract: A process for preparing a ketone, in particular cyclododecanone, by reacting cyclododecatriene with dinitrogen monoxide to obtain cyclododecadienone and hydrogenating the resulting cyclododecadienone, in particular to give cyclododecanone.

Abstract: A process for preparing xylylenediamine by continuously hydrogenating liquid phthalonitrile over a heterogeneous catalyst in the presence of liquid ammonia in a reactor, which comprises mixing a stream of a phthalonitrile melt in liquid form by means of a mixer unit with a stream of liquid ammonia and conducting the liquid mixture into the hydrogenation reactor.

Abstract: A process for preparing N-alkenyl-amides by reacting the corresponding NH-amides with acetylenes in the liquid phase in the presence of basic alkali metal compounds and of a cocatalyst comprises using as the cocatalyst diols of the general formula (I) where X is branched or unbranched alkylene selected from the group consisting of where R1 to R6 are independently hydrogen or C1- to C4-alkyl; or branched or unbranched cyclic alkylene of 3 to 14 carbon atoms including 3 to 12 ring carbon atoms, their monoalkenyl ethers, their dialkenyl ethers or mixtures thereof.

Abstract: The invention encompasses a composition of vinyl compounds, comprising a) at least one polymerizable compound which has at least one O-vinyl group or one N-vinyl group, and b) at least one ammonium salt of the formula (I) where R is NH2, O− NH4+, C1-C18-alkyl, C6-C18-cycloalkyl, or C7-C18-alkylcycloalkyl. The invention further relates to the use of an ammonium salt of the formula (I) as additive to polymerizable compounds which have at least one O-vinyl group or one N-vinyl group, and also to a process for inhibiting premature polymerization of compositions which comprise polymerizable compounds which have at least one O-vinyl group or one N-vinyl group, which encompasses adding to the compositions an ammonium salt of the formula (I).

Abstract: A process for preparing N-alkenyl-amides by reacting the corresponding NH-amides with acetylenes in the liquid phase in the presence of basic alkali metal compounds and of a cocatalyst comprises using as the cocatalyst compounds of the general formulae (Ia) and/or (Ib) R1O—(CH2CH2CH2CH2O)n—H  (Ia): R1O—(CH2CH2CH2CH2O)n—R2,  (Ib): where n is 1, 2 or 3 and R1 and R2 are independently C1- to C6-alkyl or C2- to C6-alkenyl, or together a butenyl unit.

Abstract: A process for preparing N-alkenyl-amides by reacting the corresponding NH-amides with acetylenes in the liquid phase in the presence of basic alkali metal compounds and of a cocatalyst comprises using as the cocatalyst diols of the general formula (I) 1

Abstract: A process for preparing N-alkenyl-amides by reacting the corresponding NH-amides with acetylenes in the liquid phase in the presence of basic alkali metal compounds and of a cocatalyst comprises using as the cocatalyst compounds of the general formulae (Ia) and/or (Ib)

Abstract: A process for preparing vinylphosphonic acid compounds of the formula (I) where R1 and R2 are, independently, H, C1-16-alkyl, C6-12-aryl, C7-12-alkaryl or C7-12-aralkyl, it being possible for the organic radicals to be substituted by one or more halogen atoms, hydroxyl, acyl or acetoxy groups, by reacting phosphorous acid compounds of the formula (II) with acetylene in the presence of a Pd(O) complexe or Pt(O) complex as catalyst.

Abstract: In the process for the preparation of vinylsilanes by reacting acetylenic hydrocarbons with silanes which have at least one silicon-bonded hydrogen atom in the liquid phase in the presence of a catalyst, the silane is added to the liquid phase. In particular, the reaction is carried out at superatmospheric pressure, and the spent acetylenic hydrocarbon is replenished during the reaction while maintaining a pressure which is constant during the entire reaction.

Abstract: The process for preparing alkynediols of the formula (I) R1R2C(OH)—C≡C—C(OH)R1R2  (I) where R1, R2 are each independently H, or a C1-20-hydrocarbon radical which may be substituted by one or more C1-6-alkyls and/or be interrupted by nonadjacent heteroatoms and/or contain C—C double or triple bonds, by reacting compounds of the formula (II) R1—C(═O)—R2  (II) with acetylene in a polar aprotic solvent is carried out in the presence of basic alkali metal salts as catalysts.

Abstract: The present invention relates to a process for preparing a catalyst by activating a catalytic composition which comprises a) at least one metal of group IB or IIB or a compound thereof, b) where appropriate a carrier which comprises treating the composition with an alkyne of the general formula I R1—C≡C—R2  (I) in which R1 is alkyl, cycloalkyl, aryl, hydroxyalkyl, haloalkyl, alkoxy or alkoxyalkyl, R2 is a hydrogen atom, alkyl, cycloalkyl or aryl, and a carbonyl compound of the general formula II in which R3 and R4 are, independently of one another, a hydrogen atom, alkyl, haloalkyl, cycloalkyl or aryl, to catalysts obtainable by this process, and to alkynylations and aminoalkylations employing these catalysts.

Abstract: In the process for the preparation of vinylsilanes by reacting acetylenic hydrocarbons with silanes which have at least one silicon-bonded hydrogen atom in the liquid phase in the presence of a catalyst, the silane is added to the liquid phase. In particular, the reaction is carried out at superatmospheric pressure, and the spent acetylenic hydrocarbon is replenished during the reaction while maintaining a pressure which is constant during the entire reaction.

Abstract: A process for preparing vinylphosphonic acid compounds of the formula (I) 1

Abstract: In the process for the preparation of vinyloxime ethers of the formula I by reacting an oxime with an alkyne where R1 and R2 are identical or different and are alkyl or aryl radicals, R3 is hydrogen, an alkyl or aryl radical, and R4 is a radical having the meaning of R3, which may be different than R3, or is a hydroxyalkyl radical, in a superbasic polar organic solvent in the presence of a strong base, the reaction is carried out under conditions such that the resulting vinyloxime ether stays in contact with the other constituents of the reaction mixture for only a short time so that it is unable to decompose or react to give secondary products to a significant extent.