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:
Sep. 21, 2010
Filed:
Sep. 06, 2004
Applicants:
Piet Vanneste, Denderwindeke, BE;
Raf Loenders, Bierbeek, BE;
Ivan Vanden Eynde, Keerbergen, BE;
Sabine Eeckhaoudt, Evergem, BE;
Inventors:
Piet Vanneste, Denderwindeke, BE;
Raf Loenders, Bierbeek, BE;
Ivan Vanden Eynde, Keerbergen, BE;
Sabine Eeckhaoudt, Evergem, BE;
Assignee:
Taminco N.V., Ghent, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 69/52 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to the preparation of (meth)acrylate di-ammonium salts responding to formula (I) wherein Rrepresents hydrogen or methyl, each R, independently, represents an alkyl comprising from 1 to 4 carbon atoms, each R, independently, represents an alkyl or an aralkyl and each X, independently, represents an anion;having a high purity and their use as monomers for the synthesis of polymers useful as cationic flocculants.