methods for producing a high viscosity polyacrylamide solution and for preparing a polyacrylamide solution, use of an aqueous acrylamide solution, aqueous acrylamide solution, polyacrylamide, and method for producing a polyacrylamide solution

摘要

The present invention relates to a method for producing an increased viscosity polyacrylamide solution. In particular, the present invention relates to the separation of a biocatalyst from an aqueous acrylamide solution prepared using the biocatalyst prior to polymerization of the aqueous acrylamide solution to polyacrylamide. A high viscosity polyacrylamide solution is well suited for use in tertiary oil recovery. Accordingly, the present application provides means and methods for crucially improving the quality of polyacrylamide solutions for use in tertiary oil recovery.