Patent · US Active

Method for producing a molded heat-insulating element

US10179751B2 · kind B2 · utility

7Cited by

7References

14Claims

0Family size

Assignee

EVONIK DEGUSSA GMBH · DE

Inventors

Matthias Geisler · Thalwil, CH
Frank Menzel · Oakland, US

Key dates

Filing date	Mar 31, 2016
Grant date	Jan 15, 2019
Priority date	—
Expiry date	Mar 31, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B41/64
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A process for producing an ammonia-treated hydrophilic thermal insulation molding which includes treating a thermal insulation molding containing hydrophilic silica with ammonia by introducing the thermal insulation molding into a chamber and supplying gaseous ammonia until a pressure difference Δp of ≥20 mbar is achieved. A process for producing a thermal insulation molding containing hydrophobic silica which includes treating the ammonia-treated hydrophilic thermal insulation molding with an organosilicon compound.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.