New and valuable process for the production of isocyanates by reaction of carbamyl halides with aliphatic olefins.

Cyclodedocatriene-(1,5,9) is produced by causing a B-B fraction containing from 25 to 90 percent by weight of butadiene to contact a Ziegler catalyst thereby to accomplish cyclic trimerization of the butadiene, the catalyst comprising, in combination: 1) a specific titanium compound; 2) a compound selected from specific five-membered heterocyclic compounds, specific benzene derivatives, and cyclic compounds; 3) a specific sulfur compound or a specific phosphorus compound; and 4) a specific alumi...

Improved separation and a high yield of p-xylene from a p-xylene-containing isomerizate by fractional crystallization are obtained by removing napthenes, and optionally paraffins and light and heavy ends, from the isomerizate, and recycling the naphthenes to the isomerization zone.

A high yield (92-95 percent) catalytic process for the production of muconodinitrile (1,4-dicyano-1,3-butadiene) by oxidative vapor phase dehydrogenation of 1,4-dicyanobutenes has been developed. The process is applicable to each of the following starting materials: (a) 1,4-dicyano-1-butene, (b) 1,4-dicyano-2-butene, and (c) a mixture of the last two isomers. The preferred catalysts used are supported bismuth phosphomolybdate or bismuth molybdate systems and the range of operating temperature is...

A method of producing containers in which one strip element is folded to provide uniform, transverse, channel-shaped portions and a second strip member is placed over the channel-shaped portions, the lateral, longitudinal side edges of the member being folded down against the edges of the channel-shaped portions and sealed thereto to form a container. The side edges of the member being cut to provide transverse slits therein to form flaps of a size to cover the open ends of each channel-shaped p...

Treatment of titanium dioxide by adding to an aqueous suspension thereof containing a water-soluble silicate an acidic source of a soluble oxide of zirconium, hafnium or titanium while maintaining the pH of the suspension at a value in the range 1 to 3.5 to precipitate a hydrous oxide of silicon and thereafter raising the pH to effect the complete precipitation of the hydrous oxide of zirconium, hafnium or titanium.

The disclosure of this invention relates to a method and apparatus for producing tubes from billets by cold working by intermittently rotating the billets to and fro to a predetermined angle wherein the billets are first rotated a number of times in one direction throughout the cold working operation and are thereafter rotated a number of times in the opposite direction.

Improved production of monovinylacetylene by introducing acetylene, at temperatures between 40.degree. and 100.degree.C and under acetylene gas pressures between 0.01 and 10 atmospheres (gauge), into an aqueous, hydrochloric acid solution of copper (I) chloride (Nieuwland catalyst type solution). More particularly, there is added to the catalyst solution an organic monovinylacetylene-solvent boiling at temperatures higher than substantially 150.degree.C, being immiscible therewith and containing...

Styrene is produced from ethylbenzene by contacting the ethylbenzene with a first dehydrogenation catalyst, contacting the resulting product with oxygen and an oxidation catalyst, and contacting the resulting product with a second dehydrogenation catalyst.

An improved method for the fermentative production of streptokinase by the growth of hemolytic streptococci which consists of growing the bacteria in a fermentation medium containing corn steep liquor.