Coarse-particle microcapsule preparation

US8304075B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Gabriele Lang-Wittkowski · Mannheim, DE
• Ekkehard Jahns · Weinheim, DE
• Marco Schmidt · Stuttgart, DE
• Michael Senge · Lemgo, DE
• Markus Steffen · Maikammer, DE
• Karl Kolter · Ludwigshafen am Rhein, DE

Key dates

• Filing date: Aug 2, 2005
• Grant date: Nov 6, 2012
• Expiry date: Jun 6, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2989
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention relates to a coarsely divided microcapsule preparation with particles whose particle sizes are in the range from 200 μm to 5 cm, comprising microcapsules with a capsule core of latent heat storage material and a thermosetting polymer as capsule wall and one or more polymeric binders whose binder polymer has thermoplastic properties and film-forming properties under processing conditions, where the binder content, calculated as solid, is 1-30% by weight, based on the total weight of the coarsely divided microcapsule preparation.