Patent · US Active

Process for producing superabsorbents

US12220686B2 · kind B2 · utility

0Cited by

2References

14Claims

0Family size

Assignee

BASF SE

Inventors

Monte Peterson · Pearland, US
Ronny De Kaey · Mortsel, BE
Karl J. Possemiers · Schilde, BE
Juergen Schroeder · Ludwigshafen, DE
Ruediger Funk · Ludwigshafen, DE
Matthias Weismantel · Bad Orb, DE

Key dates

Filing date	Nov 4, 2019
Grant date	Feb 11, 2025
Priority date	—
Expiry date	Mar 5, 2042

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2810/20
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a process for producing superabsorbent polymer particles, comprising polymerization of a monomer solution, wherein the monomer solution comprises partly neutralized acrylic acid formed by continuous mixing of acrylic acid and an aqueous solution of a base, the apparatus for preparing the partly neutralized acrylic acid comprises a vessel (B), and the feed line to vessel (B) ends inside vessel (B) below the liquid Level of the partly neutralized acrylic acid.

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