Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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
BESCHICHTETE POLYMERPARTIKEL MIT EINEM WASSERQUELLBAREN POLYMERKERN UND SOL-GEL-BESCHICHTUNG
PARTICULES POLYMÈRES RECOUVERTES COMPRENANT UN NOYAU POLYMÈRE GONFLANT DANS L'EAU ET UN REVÊTEMENT SOL-GEL
LEIDINGER PETER (Autor:in) / BAZULA PIOTR ANTONI (Autor:in) / MISSLITZ HOLGER (Autor:in) / HERTH GREGOR (Autor:in) / FRIEDRICH STEFAN (Autor:in) / SCHLESINGER MAIK (Autor:in)
20.02.2019
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
/
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C08J
Verarbeitung
,
WORKING-UP
/
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
COATED POLYMER PARTICLES COMPRISING A WATER-SWELLABLE POLYMER CORE AND A SOL-GEL COATING
| Europäisches Patentamt | 2017
Coated polymer particles comprising a water-swellable polymer core and a sol-gel coating
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COATED POLYMER PARTICLES COMPRISING A WATER-SWELLABLE POLYMER CORE AND A SOL-GEL COATING
| Europäisches Patentamt | 2019