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. 17, 2006
Filed:
Oct. 28, 2002
Udo Wolf, Kempen, DE;
Ralf-jürgen Born, Langenfeld, DE;
Vera Buchholz, Köln, DE;
Herbert Eichenauer, Dormagen, DE;
Eckhard Wenz, Köln, DE;
Wilhelm Bergmeier, Meerbusch, DE;
Christof Boden, Leverkusen, DE;
Udo Wolf, Kempen, DE;
Ralf-Jürgen Born, Langenfeld, DE;
Vera Buchholz, Köln, DE;
Herbert Eichenauer, Dormagen, DE;
Eckhard Wenz, Köln, DE;
Wilhelm Bergmeier, Meerbusch, DE;
Christof Boden, Leverkusen, DE;
Bayer Aktiengesellschaft, Leverkusen, DE;
Abstract
A method of using Raman Spectra for determining the progress of a graft polymerization reaction is disclosed. The method entails (a) measuring at the beginning of the reaction and at a plurality of time intervals in the course of the reaction, continuously and on-site, the Raman spectrum in the wave number range of 100 to 4000 cmof one or more of the monomers and/or polymers entailed in the reaction and of at least one internal standard and (b) recording the spectra and (c) adding reaction partners necessary to the reaction continuously and/or discontinuously and (d) calculating the change in concentration of the monomers and polymers by comparing the spectra of the monomers or polymers with the internal standard.