Patent · US Active

Method for producing polyurethane insulating foams

US8946311B2 · kind B2 · utility

7Cited by

3References

17Claims

0Family size

Assignee

EVONIK DEGUSSA GMBH · DE

Inventors

Carsten Schiller · Mülheim an der Ruhr, DE
Matthias Naumann · Greensboro, US
Ruediger Landers · Essen, DE
Christian Eilbracht · Herne, DE

Key dates

Filing date	Dec 22, 2008
Grant date	Feb 3, 2015
Priority date	—
Expiry date	Feb 24, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2375/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The object of the invention is a method for producing polyurethane and/or polyisocyanurate insulating foam based on foaming reaction mixtures containing polyisocyanates, compounds having reactive hydrogen atoms, propellants, stabilizers, nucleation agents, and optionally further additives, which is characterized in that porous solids, in particular silicates having a zeolite structure, are used as the nucleation agents.

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