The Dow Chemical Company

Dow Global Technolgoies LLC

William P Dianis

David Craig Molzahn

Louis L Walker

Katherine S Clement

Richard Michael Wehmeyer

Robert H Whitmarsh

David E Laycock

Juan M Garces

Gary R Buske

John W Weston

Harold W Young, Jr

Richard J Elwell

Alan J Williams

Ethoxylations of various initiator compounds are performed in the presence of metal cyanide catalysts. The catalysts surprisingly form a wide variety of polyether products that in most cases contain only small amounts of high molecular weight poly(ethylene oxide).

Polymerization of ethylene oxide using metal cyanide catalysts

Metal cyanide catalysts are prepared by first forming a precipitate using no more than a stoichiometric amount of a water-soluble metal salt of the form M A , based on the amount of metal cyanide compound that is used. The precipitate is then treated with an additional quantity of a metal salt of the form M A , in which M may be the same as or different than M. The catalyst is treated with a complexing agent, either during the precipitation step or during the subsequent treatment with the M A salt.

Incipient wetness method for making metal-containing cyanide catalysts

A process of preparing diaryl ethers, such as diphenyl oxide, involving dehydrating a hydroxy-substituted aromatic compound, such as phenol, over a zeolite catalyst. The preferred zeolites are dealuminated acid mordenite and dealuminated zeolite Y.

Process of preparing diaryl ethers over a dealuminated zeolite catalyst

This invention, in one respect, is a process for producing allylic chlorides which comprises contacting a feedstream containing an olefin in the gas phase with a chlorination composition under conditions effective to produce an allylic chlorine and wherein the mole ratio of oxygen to olefin is from 0 to about 1:20 in the feedstream. The chlorination composition contains supported palladium chloride, platinum chloride, or palladium chloride and a chloride of a Group 1 alkali metal selected from the group consisting of lithium, sodium, and potassium; a Group 2 alkaline earth metal; a Group 9 metal; nickel; and a Group 12 metal. The chlorination composition can be regenerated by contacting the chlorination composition with chlorine in a cyclic reaction scheme. In another respect, this invention is a composition consisting essentially of (A) palladium chloride, (B) a chloride of a metal selected from the group consisting of lithium, sodium, potassium, calcium, strontium, barium, nickel, and mixtures thereof, and (C) a support, wherein the weight percent of (A) and (B) in the composition is from about 0.1 to about 45.

Production of allylic chlorides

Included is the oxydehydrogenation of saturated dinitriles, for example, succinonitrile, to prepare unsaturated dinitriles, for example, fumaronitrile and maleonitrile. Succinonitrile can be oxydehydrogenated by passing it in a vapor phase over a calcined calcium nickel phosphate catalyst, and the selectivity to fumaronitrile can be varied by the presence of water vapor in the vapor phase feed mixture.

Oxydehydrogenation of dinitriles

Porous crystalline magnesium silicates modified by addition of phosphorus in an amount from about 0.25 percent to about 30 percent by weight.

Phosphorus modified magnesium silicate

Alkylation of a mixture of aromatic compounds employing novel crystalline porous magnesium silicates having catalytic activity.

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Midland, MI, United States of America

William P Dianis