Basf Aktiengesellschaft

Basf Se Corporation

Dieter Niederberger

Hans-Peter Hentze

Hans Willax

Marc Rudolf Jung

Rainer Dyllick-Brenzinger

Joachim Burger

Daniel Pascual Gienap

The present invention concerns microcapsules comprising a capsule core and a capsule wall, the capsule wall being constructed from all based on the total weight of the monomers, a process for their production and their use in textiles, bindered building materials and heat transfer fluids.

Microcapsules

The present invention concerns microcapsules comprising a capsule core and a capsule wall composed of thermoset polymer and also, disposed on the outer surface of the capsule wall, a polyelectrolyte having an average molecular weight in the range from 500 g/mol to 10 million g/mol, and also a process for their production and their use in bindered building materials, textiles, heat transfer fluids and dumped beds.

Polyelectrolyte-modified microcapsules

The present invention concerns microcapsules comprising a capsule core and a capsule wall, the capsule wall being constructed from

The invention described herein relates to a method of preparing microcapsules comprising a capsule core, a polymeric capsule wall and also, disposed on the outer surface of the capsule wall, a polyelectrolyte having an average molecular weight in the range from 500 g/mol to 10 million g/mol, the polymeric capsule wall being formed from specified monomers, where the microcapsules have an average particle size of 1.5-2.5 &#x3bc;m and 90% of the particles have a particle size &#x2266;4 &#x3bc;m, by microencapsulating a capsule core with a polymeric capsule wall and then contacting the polymeric capsule wall with one or more polyelectrolytes in water or an aqueous medium.

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Ludwigshafen, Germany

Dieter Niederberger