Abstract: The slightly water-soluble metal salts having the formula I ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and represent hydrogen or a lower alkyl group of from 1 to 3 carbon atoms, M is the cation of a metal which forms slightly water-soluble sulfides, and n means 1 or 2, and mixtures thereof are prepared by reacting carbon disulfide with ketones having the formula II: ##STR2## optionally with the addition of non-aqueous inert solvents, in the presence of strong alkali, preferably potassium hydroxide, followed by precipitation of the slightly water-soluble metal salts of formula I by the addition of aqueous solutions of metal salts of the metals M. They are used as gloss additives to electrolytic baths.

Abstract: A triphenylamine derivative, represented by the following general formula (1): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each represents a hydrogen atom, a lower alkyl group, an alkoxy group, a halogen atom or an aryl group which may have a substituent group; and m and n each represents 0 or 1.

Abstract: A continuous vapor phase processes for direct condensation of methanol and/or dimethyl ether with dilute acetylene feedstream to a mixture containing at least one higher molecular weight alkanol, such as n-propanol or isobutanol, over an alkaline catalyst which is, advantageously, an essentially magnesium oxide catalyst.

Abstract: Disclosed are monovinyltin trihalides of he general formula (I):(x)(x.sup.1)(x.sup.2)Sn--C(R).dbd.C(R.sup.1)--C(O)--R.sup.2(I)and a process for their preparation from 1,3-diketones, tin(II) halides and halogen acids.

Abstract: The present invention relates to a hydroxybiarylphosphines of the formula ##STR1## in which Ar-Ar is biphenyl, 1-phenyinaphthyl or 1,1'-binaphthyl, R.sup.1 and R.sup.2 are identical or different and are F or alkoxy having in each case 1 to 8 carbon atoms or are substituted or unsubstituted aryl, a and b are identical or different and are an integer from 0 to 4, in which R.sup.3 and R.sup.4 are identical or different and are alkyl having 1 to 8 carbon atoms, cycloalkyl having 4 to 10 carbon atoms, alkaryl having 7 to 9 carbon atoms, Ar.sup.3 --(R.sup.5).sub.n, in which A.sup.3 is an aryl radical having 6 to 10 carbon atoms, R.sup.5 is CF.sub.3, dialkylamino having a total of 2 to 8 carbon atoms or --CH.sub.2 N(alkyl).sub.2 having 1 to 3 carbon atoms per alkyl and n is an integer from 0 to 5, or --R.sup.3 --R.sup.