The Dow Chemical Company

Jo Ann Gilpin

Robert A Kirchhoff

Roger A Briggs

Alan K Schrock

Patrick J Oriel

Michael O Myers

Lowell B Lindy

Cynthia Baker

A catalytic amount of a finely divided copper salt catalyst is added to a monomer having at least one cyclobutarene group to lower the peak temperature of the polymerization oxotherm.

Copper salts as catalysts for monomers having at least one cyclobutarene

Two solid substrates are bonded together by using a functionally effective amount of an arylcyclobutene monomeric composition as an adhesive.

Adhesive compositions from arylcyclobutene monomeric compositions

Adhesive compositions for arylcyclobutene monomeric compositions

Reactive polymeric compositions are prepared by subjecting arylcyclobutene monomeric compositions to polymerization conditions to provide a partially polymerized composition; and removing the partially polymerized composition from said conditions. The partially polymerized composition can be subsequently subjected to polymerization and curing conditions to provide a cured polymeric composition.

Prepolymer processing of arylcyclobutene monomeric compositions

The invention is a process for the chloromethylation of an aromatic compound, substituted with an alkyl group and a deactivating moiety, which comprises contacting an aromatic compound, substituted with an alkyl group and a deactivating group, with a chloromethyl alkyl ether in the presence of a catalytic amount of ferric chloride or stannic chloride, under conditions such that an aromatic compound, substituted with an alkyl group, a chloromethyl group, and a deactivating group, wherein the alkyl and chloromethyl groups are on adjacent carbon atoms, is prepared.

Chloromethylation of deactivated aromatic compounds

Furfural or derivatives thereof, especially 5-chloromethyl furfural, is inhibited against the formation of resinous decomposition products by addition of epoxy compounds such as the reaction product of epichlorohydrin and bisphenol A.

Inhibitors for furfurals

The use of basic ion exchange resins to adsorb rifamycin B or rifamycin S from dilute solutions containing rifamycin B or rifamycin S is disclosed. The rifamycin B or rifamycin S may be recovered from the resin by desorption with a suitable desorbing solvent system.

Adsorption and recovery of rifamycin B and rifamycin S using basic ion

A process for converting rifamycin O to rifamycin S using a strong acid cation exchange resin to catalyze the reaction and a solvent containing up to about 13% water to dissolve the rifamycin derivatives.

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Midland, MI, United States of America

Jo Ann Gilpin