The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 1984
Filed:
Jul. 10, 1979
William O Beard, Jr, Wichita, KS (US);
Charles R Cupit, Wichita, KS (US);
Patricia H Moyer, Phoenix, AZ (US);
Vulcan Materials Company, Birmingham, AL (US);
Abstract
The production of undesirable 1,1,2-trichloroethane and unsym-tetrachloroethane during the production of perchloroethylene is eliminated or essentially eliminated by an improved oxychlorination reaction. The oxychlorination reaction is carried out in the presence of a copper chloride-alkali metal chloride catalyst mixture deposited on a microspheroidal activated alumina carrier having an average particle size of between about 40 and about 70 microns and a surface area of at least about 100 m.sup.2 /g with the copper chloride and alkali metal chloride being present on the carrier in a weight ratio of at least about 1.2 to 1. Reaction parameters, including, e.g., time, temperature and pressure, are controlled to produce a reaction product containing perchloroethylene and trichloroethylene, and the reaction product is free from 1,1,2-trichloroethane and unsym-tetrachloroethane.