Patent · US Active

Polyurethane foam and process for producing same

US10131759B2 · kind B2 · utility

0Cited by

5References

8Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Stefan Lindner · Friesenheim, DE
Wolfgang Friederichs
Meike Niesten
Reinhard Strey · Dormagen, DE
Thomas Sottmann
Niels Becker
Agnes Chalbi · Bad Mergentheim, DE
Diana Engelen · Leverkusen, DE
Paul Heinz · Forchheim, DE

Key dates

Filing date	Nov 7, 2014
Grant date	Nov 20, 2018
Priority date	—
Expiry date	Nov 7, 2034

Classification

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

Abstract

A polyurethane foam, polyisocyanurate foam or polyurea foam is obtainable from the reaction of a mixture comprising A) a compound reactive towards isocyanate (“NCO-reactive compound”); B) a blowing agent selected from the group comprising linear, branched or cyclic C1 to C6 hydrocarbons, linear,branched or cyclic C1 to C6 fluorocarbons, N2, O2, argon and/or CO2, where the blowing agent B) is present in the supercritical or near-critical state; C) a polyisocyanate; D) an amphiphilic isocyanate; and E) optionally a surfactant and F) optionally other auxiliaries and additives. The invention further relates to the production of this polyurethane foam, where the blowing agent is emulsified in the isocyanate component containing amphiphilic isocyanate.

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