A lipase enzyme which hydrolyzes glycerides of long-chain carboxylic acids in preference to those of short-chain carboxylic acids can be produced by growing under aerobic conditions a culture of a strain of Absidia in a medium containing appropriate nutrients and then recovering the enzyme therefrom. An especially useful strain is Absidia butleri.

A cigarette filling pressure indicator which, in a preferred arrangement, is arranged to allow the cigarette rod to pass continuously through it before the rod is cut into cigarette lengths. The indicator includes a pressure chamber which compresses an inadequately filled part of the rod, and a comparator device which compares the section of the rod before and after compression so as to detect an inadequate rod filling.

Process for the production of adiponitrile by direct electrochemical hydrodimerization of acrylonitrile using a medium containing acrylonitrile, an electrolyte salt, water and, if desired, a solvent at a temperature of from 10.degree. to 60.degree. C. at a pH of from 1 to 10. In the process, electrolysis is carried out in a cell having a liquid cathode which is contacted by a solid anode which is not wetted by the liquid cathode or into which the solid anode is immersed to a depth of up to 20 mm...

Production of calcium sulfate dihydrate (gypsum) by hydrating calcium sulfate hemihydrate in admixture with a surface active agent, sulfuric acid and phosphoric acid, the mole ratio H.sub.2 SO.sub.4 /H.sub.3 PO.sub.4 being greater than 0.4.

The invention relates to the reductive coupling of organic halo compounds, especially organic halo nitriles, using a coupling composition comprising a metal and a salt of the same metal. The invention is especially concerned with recovery and reuse of the coupling composition.

Polyenamine resins useful as adhesives and in coating applications are produced from the reaction of polyacetoacetates or polyacetoacetamides with blocked polyamines. The blocked polyamines are ketimines or enamines obtained by the reaction of an amine or amide with either a ketone or an aldimine obtained by the reaction of an amine or amide with an aldehyde.

The disclosure is directed to the production of the enzyme glucoamylase. During the growth of glucoamylase producing microorganisms, ammonium hydroxide or ammonia gas is introduced into the growth medium to provide a source of ammonia and to maintain the pH of medium at the level where optimum growth of the microorganisms occurs.

Apparatus for the manufacture of cross-lapped structures of fine webs of substantially parallel continuous filaments.

Alkyl benzenes are produced from a cycloalkane, benzene or an alkylbenzene having a lower degree of alkylation by contacting the feedstock with a zeolitic composition of alumina and silica in the absence of any hydrogenating component and at a temperature from about 400.degree. to 700.degree. F. The contacting is performed at a space velocity from about 1 to about 10 liquid volumes per volume per hour and a pressure from about 1 to 100 atmospheres in the absence or presence of hydrogen. It is be...

Preparation of isobutylene from isobutane. Integrated process of feed preparation, dehydrogenation and purification.