XEROGELS MADE FROM AROMATIC POLYUREAS

XEROGELS MADE FROM AROMATIC POLYUREAS

The invention relates to a xerogel comprising from 30 to 90% by weight of a monomer component (a1) composed of at least one polyfunctional isocyanate and from 10 to 70% by weight of a monomer component (a2) composed of at least one polyfunctional aromatic amine, at least one of which is selected fro...

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Hauptverfasser: SCHAEDLER VOLKER, EMGE ANDREAS, WIEGMANN WERNER, RAMAN VIJAY IMMANUEL, SANCHEZ-FERRER ANTONIO, FRICKE MARC
Format: Patent
Sprache:eng
Schlagworte:
BUILDING
CEILINGS
FIXED CONSTRUCTIONS
FLOORS
GENERAL BUILDING CONSTRUCTIONS
INSULATION OR OTHER PROTECTION OF BUILDINGS
ROOFS
WALLS, e.g. PARTITIONS
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creator SCHAEDLER VOLKER
EMGE ANDREAS
WIEGMANN WERNER
RAMAN VIJAY IMMANUEL
SANCHEZ-FERRER ANTONIO
FRICKE MARC
description The invention relates to a xerogel comprising from 30 to 90% by weight of a monomer component (a1) composed of at least one polyfunctional isocyanate and from 10 to 70% by weight of a monomer component (a2) composed of at least one polyfunctional aromatic amine, at least one of which is selected from 4,4′-diaminodiphenylmethane, 2,4′-diaminodiphenylmethane, 2,2′-diaminodiphenylmethane and oligomeric diaminodiphenylmethane, where the sum of the % by weight of monomer components (a1) and (a2) adds up to 100% by weight and where the monomer components are present in polymeric form in the xerogel and the volume-weighted mean pore diameter of the xerogel is at most 5 μm, The invention further relates to a process for preparing xerogels, to the xerogels thus obtainable and to the use of the xerogels as an insulating material and in vacuum insulation panels.
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subjects BUILDING
CEILINGS
FIXED CONSTRUCTIONS
FLOORS
GENERAL BUILDING CONSTRUCTIONS
INSULATION OR OTHER PROTECTION OF BUILDINGS
ROOFS
WALLS, e.g. PARTITIONS
title XEROGELS MADE FROM AROMATIC POLYUREAS
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