Method for preparing hard polyurethane and polyisocyanurate foams using chloropropane blowing agent and non-silicon foam stabilizer

US5132332A · kind A · utility

Assignee

• RECTICEL · BE

Inventors

• Bart Wallaeys · Gent, BE
• Eddie DuPrez · Zottegem, BE

Key dates

• Filing date: Mar 2, 1990
• Grant date: Jul 21, 1992
• Expiry date: Mar 2, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J9/0061
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A method for preparing hard polyurethane and polyisocyanurate foams wherein an isocyanate and an active hydrogen containing compound are made to react in the presence of a catalyst, a foam stabilizer and a blowing agent which contains chloropropane, the used foam stabilizer being mainly of the non silicon type.