Patent · US Expired

Polyurethane insulating foam

US4596725A · kind A · utility

20Cited by

3References

32Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Hermann Kluth · Goldkronach, DE
Juergen Wegner · Düsseldorf, DE
Robert Bachmann · Düsseldorf, DE

Key dates

Filing date	May 1, 1985
Grant date	Jun 24, 1986
Priority date	—
Expiry date	May 1, 2005

Classification

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

Abstract

A method of providing a foam accoustical insulation, thermal insulation, and/or moisture-barrier, in which a polyurethane prepolymer composition is applied to a substrate in situ and then expanded and cured using water pre-applied to the substrate, ambient atmospheric moisture, and/or added atmospheric moisture.

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