Basf Se Corporation

Basf Aktiengesellschaft

Hans Willax

Marc Rudolf Jung

Hans-Peter Hentze

Dieter Niederberger

Rainer Dyllick-Brenzinger

Marco Schmidt

Britta Katz

Stephan Altmann

Tina Schroeder-Grimonpont

Tina Schröder-Grimonpont

Bogdan Moraru

Tobias Joachim Koplin

Jutta Brust

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

Microcapsules of the present invention have a core and a wall. The wall is made of a polymer, which by weight is from 40 to 90% C-C-alkyl ester of acrylic acid, methacrylic acid, or both ('first monomer'); from 10 to 60% an ethylenically unsaturated crosslinker; and from 0 to 30% an ethylenically monounsaturated monomer different from the first monomer. At least 80% of the crosslinker is has three or more ethylenically unsaturated radicals. The core is made of a paraffin composition, which by weight has from 35 to 98% n-octadecane; from 1 to 10% C-C-aliphatic, diisopropylnaphthalene, or both; from 1 to 5% wax with a melting point &#x3e;40&#xb0; C.; and from 0 to 50% n-hexadecane. The present invention also relates to a process for preparing the microcapsules and to their use in binding construction materials, textiles, and heat transfer liquids.

Microcapsules with a paraffin composition as capsule core

The present invention relates to microcapsules comprising a capsule core and a capsule wall, where the capsule wall is constructed from

Microcapsules with polyvinyl monomers as crosslinker

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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Maxdorf, Germany

Hans Willax