Patent · US Active

HFO/water-blown rigid foam systems

US9896558B2 · kind B2 · utility

1Cited by

3References

10Claims

0Family size

Assignee

BASF SE

Inventors

Christiane Giesker · Osnabrück, DE
Markus Schütte · Nürnberg, DE
Patrick Lax · Büdelsdorf, DE
Jörg Krogmann · Löhne, DE

Key dates

Filing date	Jul 30, 2012
Grant date	Feb 20, 2018
Priority date	—
Expiry date	Jun 19, 2035

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2375/04
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to a process for producing rigid polyurethane foams by reaction of a) at least one organic polyisocyanate with b) at least one polyol component in the presence of a blowing agent mixture comprising water and halogenated alkenes, wherein the amount of water is at least 1.40 mol/kg of polyol component b) and the amount of halogenated alkene is at most 2.00 mol/kg of polyol component b), and also to the use of such a blowing agent mixture for producing corresponding rigid polyurethane foams and for increasing the adherence and reducing the thermal conductivity of corresponding rigid polyurethane foams. The present invention further relates to a rigid polyurethane foam obtainable by the process of the present invention.

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