XEROGELS BASED ON POLYUREA

XEROGELS BASED ON POLYUREA

Xerogel comprises: 20-90 wt.% of a monomer component (a1) made of at least one multifunctional isocyanate; and 10-80 wt.% of a monomer component (a2) made of at least one multifunctional aliphatic amine, where: the total weight of the monomer components (a1) and (a2) is 100 wt.%; the monomer compone...

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Hauptverfasser: SANCHEZ-FERRER, ANTONIO, BRUCHMANN, BERND, FRICKE, MARC, SCHAEDLER, VOLKER, RAMAN, VIJAY IMMANUEL
Format: Patent
Sprache:eng ; fre ; ger
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CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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creator SANCHEZ-FERRER, ANTONIO
BRUCHMANN, BERND
FRICKE, MARC
SCHAEDLER, VOLKER
RAMAN, VIJAY IMMANUEL
description Xerogel comprises: 20-90 wt.% of a monomer component (a1) made of at least one multifunctional isocyanate; and 10-80 wt.% of a monomer component (a2) made of at least one multifunctional aliphatic amine, where: the total weight of the monomer components (a1) and (a2) is 100 wt.%; the monomer components are present in the xerogel in polymer form; and the volume-weighted average pore diameter of the xerogel is not more than 5 mu m. An independent claim is included for producing xerogels, comprising: (a) providing the monomer components (a1) and (a2) in more separate form; (b) fusing the components (a1) and (a2) in the presence of a solvent; reacting the monomer components (a1) and (a2) in the presence of the solvent to a gel; and (c) drying the obtained gel by transferring the liquid contained in the gel into the gaseous condition at a temperature and a pressure below the critical temperature and the critical pressure of the liquid contained in the gel.
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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
title XEROGELS BASED ON POLYUREA
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