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A platform for research: civil engineering, architecture and urbanism
COATED POLYMER PARTICLES COMPRISING A WATER-SWELLABLE POLYMER CORE AND A SOL-GEL COATING
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
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
LEIDINGER PETER (author) / BAZULA PIOTR ANTONI (author) / MISSLITZ HOLGER (author) / HERTH GREGOR (author) / FRIEDRICH STEFAN (author) / SCHLESINGER MAIK (author)
2019-07-11
Patent
Electronic Resource
English
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
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C04B
Kalk
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LIME
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C08J
Verarbeitung
,
WORKING-UP
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C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
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MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
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