Production of polyurethane foams

US6087410A · kind A · utility

Assignee

• BASF SE

Inventors

• Peter Falke · Schwarzheide, DE
• Inge Rotermund · Ortrand, DE
• Marita Schuster · Senftenberg - Zły Komorow, DE
• Steffen Klippert · Schwarzheide, DE

Key dates

• Filing date: Sep 16, 1998
• Grant date: Jul 11, 2000
• Expiry date: Sep 16, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2110/0083
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyurethane foams are produced by reacting PA1 a) organic and/or modified organic diisocyanates and/or polyisocyanates with PA1 b) at least one relatively high molecular weight compound containing at least two reactive hydrogen atoms, PA1 c) at least one compound containing from three to eight, preferably from three to six, reactive hydrogen atoms and PA1 d) low molecular weight chain extenders and/or crosslinkers containing at least two reactive hydrogen atoms in the presence of PA1 e) blowing agents PA1 f) catalysts and, if desired, PA1 g) further auxiliaries and additives, wherein (c) are ethylene oxide-rich adducts having an ethylene oxide content of more than 50% by weight and an OH number of from 200 to 800 mg KOH/g and (d) are polyfunctional chain extenders and/or crosslinkers having an OH number of more than 700 mg KOH/g. The polyurethane foam produced by this process can be used as upholstery material.