The invention relates to a process for preparing isocyanates by reacting primary amines with phosgene in a solvent, where the solvent comprises a dialkyl carbonate.

The invention relates to a process for preparing isocyanates by reacting primary amines with phosgene in a solvent, where the solvent comprises a dialkyl carbonate.

The invention relates to a process for preparing isocyanates by reacting primary amines with phosgene in a solvent, where the solvent comprises a dialkyl carbonate.

A process for preparing an isocyanate compound is provided. The process includes a step of reacting an amine compound A having at least one primary amino group with CO.sub.2 and an organotin compound S having at least one radical OR.sup.3 attached to the tin atom of the organotin compound to convert at least one of the primary amino groups in the amine compound A into a carbamate group to obtain a carbamate compound C; a step of cleaving the carbamate groups in the obtained carbamate compound C to form the isocyanate compound and an alcohol R.sup.3OH, without separation of the tin compounds; and a step of obtaining the isocyanate compound. The radical R.sup.3 is a C-bound organic radical of 1-30 carbon atoms with 1, 2, or 3 carbon atoms optionally replaced by oxygen or nitrogen.

A process for preparing an isocyanate compound is provided. The process includes a step of reacting an amine compound A having at least one primary amino group with CO.sub.2 and an organotin compound S having at least one radical OR.sup.3 attached to the tin atom of the organotin compound to convert at least one of the primary amino groups in the amine compound A into a carbamate group to obtain a carbamate compound C; a step of cleaving the carbamate groups in the obtained carbamate compound C to form the isocyanate compound and an alcohol R.sup.3OH, without separation of the tin compounds; and a step of obtaining the isocyanate compound. The radical R.sup.3 is a C-bound organic radical of 1-30 carbon atoms with 1, 2, or 3 carbon atoms optionally replaced by oxygen or nitrogen.

The invention relates to a process for preparing isocyanates by reacting primary amines with phosgene in a solvent, where the solvent comprises a dialkyl carbonate.

The invention relates to a process for preparing isocyanates by reacting primary amines with phosgene in a solvent, where the solvent comprises a dialkyl carbonate.

By reacting 3-methyl-2-methoxymethylaniline, etc. with a phosgene compound in the presence of a tertiary amine at 10 C. to 14 C. in at least one kind of solvent selected from a group consisting of chlorobenzene and ortho-dichlorobenzene, an isocyanate compound such as 3-methyl-2-methoxymethyl-1-isocyanatobenzene can be manufactured with good yields.

By reacting 3-methyl-2-methoxymethylaniline, etc. with a phosgene compound in the presence of a tertiary amine at 10 C. to 14 C. in at least one kind of solvent selected from a group consisting of chlorobenzene and ortho-dichlorobenzene, an isocyanate compound such as 3-methyl-2-methoxymethyl-1-isocyanatobenzene can be manufactured with good yields.

A nonaqueous electrolyte composition containing at least one organic isocyanide of formula (I) RNC, wherein: R is selected from R.sup.1, (CH.sub.2).sub.nL, and NP(R.sup.1).sub.3; L is selected from carboxylic ester groups, S-containing groups, N-containing groups, and P-containing groups which are substituted by one, two or three R.sup.1; R.sup.1 is selected independently from C.sub.1-C.sub.10 alkyl, C.sub.3-C.sub.10 (hetero)cycloalkyl, C.sub.2-C.sub.10 alkenyl, C.sub.3-C.sub.7 (hetero)cycloalkenyl, C.sub.2-C.sub.10 alkynyl, C.sub.5-C.sub.7 (hetero)aryl, and C.sub.6-C.sub.13 (hetero)aralkyl, and n is an integer from 1 to 10; with proviso that C.sub.3-C.sub.10 (hetero)cycloalkyl is not morpholinyl.