Method for the pneumatic delivery of superabsorbent particles

US11859059B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Stephan Bauer · Ostercappeln, DE
• Katrin Baumann · Mannheim, DE
• Markus Toennessen · Ludwigshafen, DE
• Thomas Daniel · Waldsee, DE
• Hanno Rüdiger Wolf · Heidelberg, DE

Key dates

• Filing date: Jan 28, 2019
• Grant date: Jan 2, 2024
• Expiry date: May 16, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L23/0869
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A method of pneumatically conveying superabsorbent particles, wherein the superabsorbent particles have been admixed with an aqueous wax dispersion prior to the pneumatic conveying, the wax has a glass transition temperature of at least 65° C. and, based on the untreated superabsorbent particles, from 0.020% to 0.20% by weight of wax has been used.