Abstract: The present invention relates to a composition comprising: a) at least one primary, secondary or tertiary amine and b) at least one agent which masks the odor of said at least one amine, said at least one odor-masking agent comprising at least one ether (b1), optionally, but preferably, at least one terpene and/or one terpenoid (b2) and optionally, but preferably, at least one oxime (b3). The invention also relates to the use of an odor-masking agent in order to mask the odor of at least one amine.

Abstract: The present invention relates to a composition comprising: a) at least one primary, secondary or tertiary amine and b) at least one agent which masks the odour of said at least one amine, said at least one odour-masking agent comprising at least one ether (b1), optionally, but preferably, at least one terpene and/or one terpenoid (b2) and optionally, but preferably, at least one oxime (b3). The invention also relates to the use of an odour-masking agent in order to mask the odour of at least one amine.

Abstract: The present invention relates to a process for preparing alkylalkanolamines, comprising the reaction of a carbonyl-based compound with a hydroxylalkylamine, in the presence of hydrogen and a catalyst.

Abstract: The invention relates to the use, as neutralizing and/or co-dispersion agent in a paint and/or as agent for developing the coloring power of pigment(s) in a white paint base that we wish to color, of at least one hydroxylated secondary or tertiary amine. The invention also relates to pigment concentrates and paints containing at least one hydroxylated secondary or tertiary amine.

Abstract: Disclosed herein is N-ethylmethylamine having a very high degree of purity, that is to say very low contents of impurities commonly encountered in conventional industrial processes, and a process for preparing, on an industrial scale, high-purity N-ethylmethylamine.

Abstract: The present invention relates to a process for preparing alkylalkanolamines, comprising the reaction of a carbonyl-based compound with a hydroxylalkylamine, in the presence of hydrogen and a catalyst.

Abstract: The invention relates to the use, as neutralizing and/or co-dispersion agent in a paint and/or as agent for developing the coloring power of pigment(s) in a white paint base that we wish to color, of at least one hydroxylated secondary or tertiary amine. The invention also relates to pigment concentrates and paints containing at least one hydroxylated secondary or tertiary amine.

Abstract: The present invention relates to N-ethylmethylamine having a very high degree of purity, that is to say very low contents of impurities commonly encountered in conventional industrial processes, and also to the process for preparing, on an industrial scale, high-purity N-ethylmethylamine.

Abstract: The invention relates to a method for preparing bromodifluoroacetic compounds which comprises converting a 1,1-difluoro-1,2-dibromodihaloethane with oleum having 50-70% SO3 to a bromodifluoroacetyl halide (bromide or chloride) and then in reacting the latter directly with either an alcohol, or with water.

Abstract: The invention concerns a procedure for preparation of N-(&ohgr;-bromoalkyl)phthalimides which consists of reacting potassium phthalimide with an &agr;,&ohgr;-dibromoalkane without cosolvent, at a temperature from 50° C. to 130° C. by using a molar ratio of &agr;,&ohgr;-dibromoalkane to potassium phthalimide from 2.5 to 6, then of removing excess &agr;,&ohgr;-dibromoalkane, under reduced pressure at a temperature equal to 150° C. at most, of taking up the reaction medium again with a low boiling point alcohol at a temperature near that of the boiling point of said alcohol, of filtering at this temperature, of cooling the filtrate obtained and then of recovering the N-(&ohgr;-bromoalkyl)phthalimide.

Abstract: The invention relates to a continuous process for the preparation of pivaloyl chloride and of aroyl chloride, in particular of benzoyl chloride, which consists in reacting pivalic acid with a trichloromethylated aromatic compound in the presence of a catalyst at a temperature of between 60° C. and 180° C. under reduced pressure. The products formed are continuously removed from the reaction region, the hydrogen chloride formed being treated in a washing region in which a trichloromethylated compound moves countercurrentwise.

Abstract: The invention relates to a method for preparing bromodifluoroacetic compounds which comprises converting a 1,1-diflouro-1,2-dibromodihaloethane with oleum having 50-70% SO3 to a bromodifluoroacetyl halide (bromide or chloride) and then in reacting the latter directly with either an alcohol, or with water.

Abstract: For preparing bis-silyl carboxamides in a semi-continuous, reacting an amide or the N-trimethylsilyl derivative thereof with a silylating agent and, at the same time, extracting the bis-silyl carboxamide formed by distillation under reduced pressure.

Abstract: For preparing bis-silyl carboxamides in a semi-continuous, reacting an amide or the N-trimethylsilyl derivative thereof with a silylating agent and, at the same time, extracting the bis-silyl carboxamide formed by distillation under reduced pressure.

Abstract: The invention relates to a process for manufacturing bis-silyl ureas which consists in reacting urea and a disilazane in an aliphatic nitrile and most particularly in acetonitrile. The process of the present invention applies particularly to the manufacture of bis(trimethylsilyl)urea from urea and hexamethyldisilazane.

Abstract: To prepare .alpha.,.omega.-bromochloroalkanes, a cyclic ether, to which water has optionally been added, is hydrochlorinated and then the resultant phase is reacted, without any prior purification or separation, with gaseous hydrobromic acid.

Abstract: The invention relates to a process for the preparation of .alpha.,.omega.-bromochloroalkanes. A cyclic ether is hydrobrominated and then the phase obtained is reacted, without any prior purification or separation, with thionyl chloride.

Abstract: A process for the preparation of alkyl halodifluoroacetates comprises reacting a 1,1-difluorotetrahaloethane with an alcohol, e.g., ethanol or isopropanol, in the presence of oxygen and a chemical free-radical initiator, e.g., an azo compound.

Abstract: A process for the preparation of 3-chloropropionic acid consists especially in simultaneously introducing hydrochloric acid gas and acrylic acid at a molar ratio of 0.7:1 to 1.3:1 into a sediment consisting of 3-chloropropionic acid optionally diluted with water or with an aqueous hydrochloric acid solution.

Abstract: For the preparation of alkyl halodifluoroacetates, a 1,1-difluorotetrahaloethane is reacted with an alcohol in the presence of air and/or oxygen and a free-radical initiator, such as for example an azo compound, e.g., azobis(isobutyronitrile).