Patent · US Expired

Water-soluble copolymers based on olefinic sulfonic acids, method for the production thereof and use of the same

US7202319B2 · kind B2 · utility

9Cited by

1References

21Claims

0Family size

Assignee

BASF CONSTRUCTION POLYMERS GmbH · DE

Inventors

Christian Spindler · Günzburg, DE
Johann Plank · Kelheim, DE
Andrea Fenchl · Günzburg, DE
Uwe Huber · Garching bei München, DE

Key dates

Filing date	Apr 9, 2003
Grant date	Apr 10, 2007
Priority date	—
Expiry date	Mar 21, 2024

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F220/585
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Water-soluble copolymers based on olefinic sulfonic acids, olefinic dicarboxylic acids, vinyl amides and vinyl ethers and/or allyl ethers and/or bisacryl derivatives are described as well as processes for their production and the use of these copolymers as water retention agents, thickeners or anti-segregation agents for aqueous building material systems that contain hydraulic binding agents such as cement, lime, gypsum, anhydrite etc. or for clay suspensions preferably based on bentonite.

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