Bayer Aktiengesellschaft

Ralf-Jürgen Born

Herbert Eichenauer

Eckhard Wenz

Udo Wolf

Vera Buchholz

Wilhelm Bergmeier

Christof Boden

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.

Growing community of inventors

Langenfeld, Germany

Ralf-Jürgen Born