The invention relates to a process for drying a catalyst carrier or drying a catalyst comprising a carrier on which a metal is supported, wherein the carrier or catalyst is contacted with a drying agent which comprises an organic carbonate. Further, the invention relates to a process for preparing a catalyst which comprises a carrier on which a metal is supported, said process comprising drying the carrier by contacting the carrier with a drying agent which comprises an organic carbonate resulting in a dried carrier; and impregnating the dried carrier with a solution wherein a compound containing the metal is dissolved in a solvent which is an organic carbonate or an alcohol. Still further, the invention relates to a process for preparing an aromatic carbonate, such as a diaryl carbonate, using the catalyst thus prepared or dried; and to a process for making a polycarbonate from the diaryl carbonate thus prepared.

The invention relates to a process for drying a catalyst carrier or drying a catalyst comprising a carrier on which a metal is supported, wherein the carrier or catalyst is contacted with a drying agent which comprises an organic carbonate. Further, the invention relates to a process for preparing a catalyst which comprises a carrier on which a metal is supported, said process comprising drying the carrier by contacting the carrier with a drying agent which comprises an organic carbonate resulting in a dried carrier; and impregnating the dried carrier with a solution wherein a compound containing the metal is dissolved in a solvent which is an organic carbonate or an alcohol. Still further, the invention relates to a process for preparing an aromatic carbonate, such as a diaryl carbonate, using the catalyst thus prepared or dried; and to a process for making a polycarbonate from the diaryl carbonate thus prepared.

An electrolytic solution including a heteroelement-containing organic solvent at a mole ratio of not greater than 1.5 relative to a metal salt, the heteroelement-containing organic solvent containing a linear carbonate represented by general formula (1) below, the metal salt being a metal salt whose cation is an alkali metal, an alkaline earth metal, or aluminum and whose anion has a chemical structure represented by general formula (2) below.

R.sup.10OCOOR.sup.11  general formula (1)

(R.sup.21X.sup.21)(R.sup.22SO.sub.2)N  general formula (2)

The present application relates to a method for the continuous production of diaryl carbonate from phosgene and of at least one monohydroxy compound (monophenol) in the presence of catalysts, and to the use thereof for the production of polycarbonates.

The present application relates to a method for the continuous production of diaryl carbonate from phosgene and of at least one monohydroxy compound (monophenol) in the presence of catalysts, and to the use thereof for the production of polycarbonates.

A method for preparing an aromatic carbonate, of the present invention, comprises the steps of: (A) preparing a reaction mixture containing an aliphatic carbonate by reacting an organometallic compound and carbon dioxide; and (B) preparing an aromatic carbonate by reacting the reaction mixture and an aromatic alcohol. The method for preparing an aromatic carbonate allows an aromatic carbonate to be economically prepared in a high yield by using carbon dioxide as a carbonyl supply source.

A method for preparing an aromatic carbonate, of the present invention, comprises the steps of: (A) preparing a reaction mixture containing an aliphatic carbonate by reacting an organometallic compound and carbon dioxide; and (B) preparing an aromatic carbonate by reacting the reaction mixture and an aromatic alcohol. The method for preparing an aromatic carbonate allows an aromatic carbonate to be economically prepared in a high yield by using carbon dioxide as a carbonyl supply source.

The disclosure relates to dialkyl carbonates of branched alcohols and their use in cosmetic and/or pharmaceutical compositions. The disclosure more particularly relates to dialkyl carbonates in which the alkyl groups are both 2-propyl-1-heptyl groups.

The disclosure relates to dialkyl carbonates of branched alcohols and their use in cosmetic and/or pharmaceutical compositions. The disclosure more particularly relates to dialkyl carbonates in which the alkyl groups are both 2-propyl-1-heptyl groups.

The present invention is related to substituted butanol derivatives of the formula: ##STR00001##
wherein R is an unsubstituted or substituted C.sub.1-6 straight chain alkyl, an unsubstituted or substituted C.sub.3-6 branched chain alkyl, an unsubstituted or substituted C.sub.3-6 straight chain alkenyl, an unsubstituted or substituted C.sub.3-6 branched chain alkenyl, an unsubstituted or substituted C.sub.3-6 cycloalkyl, an unsubstituted or substituted C.sub.1-6 alkoxy, nitrile, halo, amino, an unsubstituted or substituted C.sub.1-6 alkylamino, an unsubstituted or substituted C.sub.1-6 dialkylamino, carboxy-C.sub.1-6 alkylamino, carboxy-C.sub.1-6 dialkylamino, an unsubstituted or substituted acetoxy, carboxy, an unsubstituted or substituted carboxyethyl, an unsubstituted or substituted C.sub.1-6 alkylcarbonyl, an unsubstituted or substituted C.sub.1-6 alkylcarboxy, an unsubstituted or substituted C.sub.1-6 alkylthio, an unsubstituted or substituted C.sub.1-6 alkyloxy, carboxamido, an unsubstituted or substituted C.sub.1-6 alkylcarboxamido or an unsubstituted or substituted C.sub.1-6 dialkylcarboxamido. Such compounds are useful in flavor or flavor compositions.