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. 21, 1998
Filed:
May. 02, 1997
Applicant:
Inventors:
Carl C Greco, Garnerville, NY (US);
John Tomko, Dobbs Ferry, NY (US);
Assignee:
Akzo Nobel NV, Arnhem, NL;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
562-8 ;
Abstract
Styrene phosphonic acid (SPA) can be formed the reaction of phosphorous acid with acetophenone, preferably in the presence of a Lewis acid catalyst, to form a hydroxy adduct intermediate thereof which is then reacted with acetic anhydride to form the acyl derivative of the hydroxy adduct, followed by removal of an acetic acid moiety therefrom, preferably in the presence of an acidic catalyst, to form the styrene phosphonic acid product.