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:
Oct. 14, 2008
Filed:
Mar. 08, 2005
Applicants:
Shiming Wo, Monroe Township, NJ (US);
John Marshall Baker, Charleston, SC (US);
Inventors:
Shiming Wo, Monroe Township, NJ (US);
John Marshall Baker, Charleston, SC (US);
Assignee:
Rhodia Inc., Cranbury, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 9/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a process for the production of halohydrocarbyl phosphonic acid diesters via a Michaelis-Arbuzov type reaction which results in high conversion and selectivity of product with ease of purification; the improvement comprises reacting hydrocarbyl halide with trihdydrocarbyl phosphite in a molar ratio of about 6:1 and in the presence of an effective amount of a polarity lowering additive.