The Dow Chemical Company

Eric R Larsen

Ernest L Ecker

Leslie P McCarty

Compositions consisting essentially of thermoset polymers prepared by copolymerizing a solution of an iodine containing, crosslinkable, unsaturated polyester resin dissolved in a vinyl monomer are disclosed. These compositions have been found to be useful as radiopaque agents and in the manufacture of radiopaque, flame retardant articles.

Radiopaque thermoset polymer

The compound 1,1,2-trichloro-2,2-difluoroethane is prepared in high yield by contacting 1,1-difluoroethylene and chlorine in the presence of a free radical initiator in a liquid reaction medium.

Process for the production of 1,1,2-trichloro-2,2-difluoroethane

Unsaturated esters can be prepared from dicarboxylic acids and dibromoneopentyl glycol with improved resin color in a shorter reaction time with minimal corrosion of metallic reaction vessels and with a net energy saving by the process using an aryl sulfonic acid as the esterification catalyst and following completion of the reaction neutralizing the acid catalyst.

Unsaturated polyesters prepared from a dicarboxylic acid and

Deuterated Isoflurane and anesthetic compositions thereof useful as inhalation anesthetics show reduced levels of inorganic fluoride in urine of anesthetized animals.

Deuterated isoflurane

Deuterated isoflurane as an anesthetic agent

Deuterated halo ethers useful as anesthetics and having lower toxicity than undeuterated analogues further including compositions, and methods of use.

Deuterated 1,1-difluoro-2,2-dihaloethyl difluoromethyl esters

Deuterated 1,1-difluoro-2,2-dihaloethyl difluoromethyl ethers

This invention relates to a method for recovering hydrogen bromide gas from a gaseous stream. The method comprises contacting the gaseous stream with a nonaqeous hydrogen bromide absorbent containing acetic acid to absorb at least a portion of the hydrogen bromide. The hydrogen bromide containing absorbent is then heated to desorb at least a portion of the hydrogen bromide.

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Midland, MI, United States of America

Eric R Larsen