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:
May. 12, 1998
Filed:
Oct. 03, 1995
Applicant:
Inventors:
C Bradford Boyce, Baton Rouge, LA (US);
Guy P Pittman, Baton Rouge, LA (US);
Bolivar F Lewis, III, Prairieville, LA (US);
Assignee:
LaRoche Industries, Inc., Atlanta, GA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
20415794 ; 20415795 ; 20415811 ; 2041582 ;
Abstract
An improvement in the process for the photochlorination of liquid mixtures of 1,1-dichloro-1-fluoroethane and unsaturated hydrocarbons with ultraviolet light is disclosed. The improvement comprises using ultraviolet light emitted from an ultraviolet light source having an ultraviolet radiation efficiency of at least 0.01 Einsteins per inch of arc per 100 watts input at a wavelength that is substantially the same as the wavelength absorption band of chlorine.