Basf Se Corporation

Basf Corporation

Construction Research & Technology Gmbh

Maik Schlesinger

Gerhard Albrecht

Stefan Friedrich

Bernhard Feichtenschlager

Gregor Herth

Sophie Putzien

Meik Ranft

Edith Schneider

Maximilian Hemgesberg

Yi Liu

Marko Buchholz

Holger Misslitz

Michael Dietzsch

Peter Leidinger

Denis Schwall

Pauline Petit

Piotr Antoni Bazula

An aqueous suspension comprising water, a zeolitic material and one or more of copper and iron, and a chelate complex comprising a zirconium ion and a bidentate organic ligand bonded to said zirconium ion via zirconium oxygen bonds from two oxygen atoms comprised in said ligand, said chelate complex being dissolved in the water.

Aqueous suspension comprising a zeolitic material and a zirconium chelate complex

The present invention relates to coated polymer particles comprising a water-swellable polymer core and an essentially continuous coating encapsulating the core. The coating comprises an oxide, hydroxide or oxide hydrate of silicon, aluminum, zirconium, tin or titanium. The polymer particles do not show instantaneous swelling, when contacted with water or a water-containing liquid, but show delayed water absorption after an appropriate period of time. The coated polymer particles may be used in oil fields, in mining, for construction chemical compositions or as carrier for active substances. The coated polymer particles are prepared by a suspension coating process or a fluidized bed coating process.

Coated polymer particles comprising a water-swellable polymer core and a sol-gel coating

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Ludwigshafen, Germany

Maik Schlesinger