Production of low-fogging polyurethane foams, and specific poly-oxyalkylene-polyols which can be used for this purpose

US5672636A · kind A · utility

Assignee

• BASF SE

Inventors

• Peter Horn · Heidelberg, DE
• Ludwig Jung · Fürstenfeldbruck, DE
• Harald Larbig · Ludwigshafen, DE
• Rolf Lebkucher · Mannheim, DE
• Gerhard Lehr · Schwegenheim, DE

Key dates

• Filing date: Oct 16, 1995
• Grant date: Sep 30, 1997
• Expiry date: Oct 16, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2115/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the production of polyurethane foams by reacting PA1 a) at least one organic polyisocyanate with PA1 b) at least one polyalkylene-polyol (b1) having a hydroxyl number of from 30 to 500, obtainable by alkoxylation of at least one initiator molecule from the group consisting of N,N'-bis(3-aminopropyl)ethylenediamine, tripropylenetetramine and tetrapropylenepentamine using at least one alkylene oxide, preferably ethylene oxide and/or 1,2-propylene oxide, or mixtures of the polyoxyalkylene polyols (b1) and other polyhydroxyl compounds having a functionality of from 2 to 8 and a hydroxyl number of from 15 to 500, and PA1 c) if desired, chain extenders and/or crosslinking agents, in the presence of PA1 d) blowing agents and, if desired, PA1 e) catalysts and PA1 f) additives, and to the novel polyoxyalkylene-polyols (b1) which can be used for this purpose.