Composition that is suitable for producing polyurethane foams and that contains at least one nucleating agent

US10988593B2 · kind B2 · utility

Assignees

• BASF SE
• Evonik Operations GmbH · DE

Inventors

• Markus Schuette · Melle, DE
• Mark Elbing · Bremen, DE
• Johann Klassen · Schwentinental, DE
• Frank Fechner · Melle, DE
• Werner Wiegmann · Rahden, DE
• Michael Klostermann · Essen, DE
• Joachim Venzmer · Essen, DE
• Christian Eilbracht · Herne, DE
• Martin Glos · Borken, DE
• Carsten Schiller · Mülheim an der Ruhr, DE

Key dates

• Filing date: Dec 18, 2014
• Grant date: Apr 27, 2021
• Expiry date: Dec 18, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Disclosed herein is a method for producing polyurethane or polyisocyanurate foams. The method involves reacting a composition (Z1) with at least one polyisocyanate, and occurs in the presence of at least one nucleating agent and a blowing agent, in which the nucleating agent and the blowing agent are mixed to obtain a composition (Z2) that is added to the composition (Z1) before it is reacted with the at least one polyisocyanate. The composition (Z1) contains (i) 100 parts by mass of a composition (ZP) including at least one polyol and at least one catalyst that catalyzes formation of a urethane, urea or isocyanuarate bond, and (ii) from 0.05 to 10 parts by mass of a surfactant TD having an HLB value below 6 and no silicon atom.