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:
Dec. 05, 1995
Filed:
Jan. 10, 1995
Fred Jaffe, Ossining, NY (US);
Akzo Nobel N.V., Arnhem, NL;
Abstract
Diethyl ethylphosphonate is formed by the catalytic rearrangement of triethyl phosphite in a reaction medium at elevated temperature, preferably using an ethyl iodide as the rearrangement catalyst, employing a heel of diethyl ethylphosphonate in the reaction medium when the reaction is begun with maintaining of the reaction medium at a temperature above the boiling point of the triethyl phosphite (for example, a temperature of from about 175.degree. C. to about 185.degree. C.) and addition of the triethyl phosphite to the reaction medium at a rate slow enough to maintain that temperature.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile