Patent · US Active

Method for producing superabsorbent particles

US12275808B2 · kind B2 · utility

0Cited by

1References

14Claims

0Family size

Assignee

BASF SE

Inventors

Rene Callot · Ekeren, BE
Karl J. Possemiers · Schilde, BE
Ruediger Funk · Ludwigshafen, DE
Marco Krueger · Mannheim, DE
Matthias Weismantel · Bad Orb, DE
Juergen Schroeder · Ludwigshafen, DE

Key dates

Filing date	Jan 13, 2020
Grant date	Apr 15, 2025
Priority date	—
Expiry date	May 11, 2042

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2220/68
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for producing superabsorbent particles by polymerizing a monomer solution or suspension, comprising drying of the resultant aqueous polymer gel in an air circulation belt dryer, grinding, classifying, and optionally thermal surface postcrosslinking, wherein the aqueous polymer gel is introduced into the air circulation belt dryer by means of an oscillating conveyor belt and that guide devices are located at the edges of the conveyor belt.

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