Patent · US Active

Process for producing a polyacrylamide solution with increased viscosity

US10975177B2 · kind B2 · utility

0Cited by

6References

17Claims

0Family size

Assignee

Solenis Technologies, L.P. · CH

Inventors

Bjoern Langlotz · Trostberg, DE
Linda Garella · Wiesloch, DE
Michael Braun · Heidelberg, DE
Juergen Daeuwel · Ludwigshafen, DE

Key dates

Filing date	Mar 29, 2017
Grant date	Apr 13, 2021
Priority date	—
Expiry date	Apr 30, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC12Y402/01084
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

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

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.