Basf Se Corporation

Stephan Altmann

Thomas Daniel

Reinhold J Leyrer

Marco Schmidt

Tina Schroeder-Grimonpont

Hans Willax

Tina Schröder-Grimonpont

Britta Katz

Philippe Desbois

Marc Rudolf Jung

Bogdan Moraru

Tobias Joachim Koplin

Dirk Opfermann

Jutta Brust

Wendel Wohlleben

Oihana Elizalde

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 polyamide moldings obtainable via anionic polymerization of a lactam comprising microcapsules with a capsule core made of latent-heat-accumulator material and a polymer as capsule wall, to a process for producing the same, and also to the use of the same in motor-vehicle construction, as battery housing, as housing for small electronic devices, and for heat-retention systems for foods.

Polyamide moldings comprising microencapsulated latent-heat-accumulator material

A thermoplastic molding composition is provided, which comprises A) from 30 to 90% by weight of at least one thermoplastic polymer, B) from 10 to 70% by weight of microcapsules with a capsule core made of latent-heat-accumulator material and a polymer as capsule wall, where the latent-heat-accumulator material has its solid/liquid phase transition in the temperature range from &#x2212;20&#xb0; C. to 120&#xb0; C., and C) from 0 to 60% by weight of one or more further additive, where each of the percentages by weight is based on the total weight of components A) to C) and these give a total of 100% by weight, obtainable via mixing in the melt of components A), B), and optionally C) in a multiscrew extruder, where the multiscrew extruder comprises, along the direction of conveying, in this sequence, at least one feed zone, one plastifying zone, one homogenizing zone, and one discharge zone, and the feed of the microcapsules B) into the multiscrew extruder takes place at a site after&#x2014;in the direction of conveying&#x2014;the plastifying zone. And also a process for producing the composition and uses of the composition for producing fibers, foils, moldings, and foams are provided.

Thermoplastic molding composition comprising microencapsulated latent-heat-accumulator material

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

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Ruppertsberg, Germany

Stephan Altmann