Abstract:
Mixtures of dyes of the formula ##STR1## where R is hydrogen or methyl and n is a number from 0 to 6 are exceptionally suitable--especially when used in the form of stock solution--for coloring mineral oil products.
Abstract:
Alkylphenol compounds are manufactured by continuous reaction of phenolic compounds with olefins in the presence of a pulverulent polystyrenesulfonic acid exchanger suspended in the reaction mixture. The products are starting materials for the manufacture of dyes, pesticides, pharmaceuticals, emulsifiers, dispersing agents, stabilizers, antioxidants, plasticizers, corrosion inhibitors, disinfectants, seed dressings, aging inhibitors, crop protection agents and scents.
Abstract:
1,3-Diamino-2,2-dimethyl-propane is prepared by reacting hydroxypivalaldehyde with ammonia and hydrogen in the presence of a nickel catalyst at from 40.degree. to 150.degree. C. and thereafter at from 220.degree. to 300.degree. C. The product is a starting material for the manufacture of dyes, crop protection agents and plastics, especially nylons and polyurethanes.
Abstract:
A method of printing fibrous materials using a print paste incorporating as emulsifier a di-(.alpha.-phenylethyl)-phenol which has been first reacted with from 2 to 12 moles of propylene oxide and/or butylene oxide and then with from 14 to 30 moles of ethylene oxide.
Abstract:
Anthraquinones are manufactured by cyclizing o-benzoylbenzoic acids in the presence of oxygen-containing compounds of aluminum and silicon at elevated temperatures. The products are starting materials for the manufacture of dyes.
Abstract:
Hemiacetals of glyoxal monoacetals are useful as intermediates to prepare 2-substituted but-2-en-1,4-dial-4-acetals of the general formula I; ##STR1##
Abstract:
Novel 2,2 -dialkylpentane-1,5-diisocyantes, 2,2-dialkylpentane-1,5-diurethanes and 2,2-dialkylpentane-1,5-dicarbamoyl chlorides of the formula ##STR1## where R.sup.1 and R.sup.2 are identical or different linear C.sub.1 -to C.sub.12 -alkyl, branched C.sub.3 - to C.sub.12 -alkyl, branched C.sub.2 - to C.sub.12 -alkenyl or branched C.sub.4 - to C.sub.12 -alkenyl,or R.sup.1 and R.sup.2 together are alkylene having from 4 to 7 carbon atoms, which is unsubstituted or substituted by from 1 to 5 C.sub.1 - to C.sub.4 -alkyl groups, and X is NCO, NH--CO.sub.2 R.sup.3, NHCO.sub.2 R.sup.4 or NHCOCl, where R.sup.3 and R.sup.4 are identical or different and are linear C.sub.1 - to C.sub.20 -alkyl, branched C.sub.3 - to C.sub.20 -alkyl or C.sub.5 - to C.sub.12 -cycloalkyl, are described.
Abstract:
Polyisocyanates containing isocyanurate groups are prepared by a partial trimerization of (cyclo)aliphatic diisocyanates in the presence of at least one trimerization catalyst selected from the group consisting of tetraalkylammonium alkyl carbonates of the formula (I) ##STR1## (quaternary ammonioalkyl) carbonates having a betaine structure of the formula (II) ##STR2## and the preferred use of the polyisocyanates containing isocyanurate groups which are obtainable in this way is aspolyisocyanate component in polyurethane finishes.
Abstract:
1,1'-bis(3-aminopropyl)-2,2'-diimidazole of the formula I ##STR1## is prepared by a novel process in which 2,2'-diimidazole of the formula II ##STR2## is reacted with acrylonitrile of the formula III ##STR3## in the presence of basic catalysts at from 80.degree. to 150.degree. C., and hydrogenation is carried out with excess hydrogen in the presence of ammonia on catalysts which contain cobalt, nickel, ruthenium and/or noble metals at from 40.degree. to 200.degree. C. under from 10 to 200 bar.
Abstract:
A process for preparing 5-cyanovaleramide by reacting adiponitrile with water at from 50.degree. to 200.degree. C. in the presence of a supported unionized-copper catalyst comprises employing from 1 to 15 mol of water per mole of adiponitrile and a residence time of from 5 to 60 minutes.