Amines are prepared by reacting aldehydes or ketones at elevated temperature under elevated pressure with nitrogen compounds selected from the group of ammonia, primary and secondary amines, and with hydrogen in the presence of a catalyst containing copper, wherein the catalytically active mass of the catalyst contains, before the reduction with hydrogen, 20 to 85% by weight of oxygen-containing compounds of zirconium, calculated as ZrO.sub.2, 1 to 30% by weight of oxygen-containing compounds of...

The invention is directed to a process for preparing a bis(hydroxymethyl)perylenetetracarboximide compound by reacting perylene-3,4,9,10-tetracarboximide with formaldehyde. The bis(hydroxymethyl)perylenetetracarboximide can be isolated or further reacted in a one pot synthesis to yield a compound of the formula ##STR1## wherein X.sub.1 and X.sub.2 are organic radicals.

A method of preparing dichloroformals of the formula by reaction of one mole of a thionocarbonate of the formula with two moles of benzenesulfenyl chloride, chlorobenzenesulfenyl chloride, r methanesulfenyl chloride wherein R is --C(NO.sub.2).sub.3, --CF(NO.sub.2).sub.2, --CF.sub.2 (NO.sub.2), --CCl(NO.sub.2).sub.2, --C(NO.sub.2).sub.2 CH.sub.3, --CCl.sub.3, --CF.sub.3, or --CF.sub.2 CF.sub.3. These energetic dichloroformals are useful as explosive and propellant ingredients and as intermediates...

A toner, a method of and an apparatus for preparing a permanently-charged electret toner, including discharging a solution or dispersion including a resin and a colorant through a nozzle vibrating at a constant frequency to form a droplet; applying a direct potential to an electrode facing the nozzle to positively or negatively charge the droplet by an induction phenomenon to form a charged droplet; and drying and solidifying the charged droplet to be permanently charged.

A process for the selective alkylation of substituted or unsubstituted benzene compounds with relatively long chain length alkylating agents to produce phenylalkanes having an improved yield of the more external phenyl isomers. The reaction is carried out in the presence of crystalline zeolite catalysts, such as ZSM-4, ZSM-20, ZSM-38, mazzite, Linde Type L and zeolite Beta.

The invention includes methods for preparing halohydrins and epoxides. A method of preparing halohydrins can include exposing (R.sup.1CHXCH.sub.2O--).sub.2SO.sub.2 to R.sup.2COOH to produce R.sup.1CHXCH.sub.2COOR.sup.2 and hydrolyzing the R.sup.1CHXCH.sub.2COOR.sup.2 to produce the halohydrin R.sup.1CHXCH.sub.2OH. R.sup.1 and R.sup.2 can be the same or different single elements and/or organic groups and X can be a halogen. A method of preparing an epoxide can include combining a sulfuric acid co...

The invention deals with compositions having utility as digestive aids. Such compositions can be produced in a dry powder form, with amylotic and lipolytic activity in addition to the proteolytic activity normally present and with harmful bacteria eliminated therefrom by treating comminuted pancreas with aqueous medium containing calcium sulfate or calcium acetate, adding a proteolytic enzyme activator and after a period required for enzyme activation, dehydrating the mixture at temperatures whi...

Octenol ether copper.sup.(I) lithium reagents which are useful in preparing prostaglandin derivatives and methods of preparing such reagents and methods of preparing prostaglandin derivatives using such reagents. The prostaglandin derivatives exhibit prostaglandin-like pharmacological properties and thus are useful where such agents are indicated.

A process for preparing an end-capped polycarbonate comprises melt reacting an aromatic dihydroxy compound, a carbonic acid diester, and optionally a catalyst in a prepolymerization vessel to form a polycarbonate product; transferring the polycarbonate product from the prepolymerization vessel; mixing the polycarbonate product with an end-capping agent under hermetic seal at a pressure of at least about 760 mm Hg; and transferring the polycarbonate product and end-capping agent mixture to a post...

There is now provided a kitchen stove for preparing food, and an oven for preparing food. The stove or oven has a heating arrangement to make the cleaning of the stove or oven easier for a user particularly at the viewing window of the oven.