Dimensionally stable polyurethane molded bodies having low density

US9713884B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Andre Kamm · Bohmte, DE
• Dong Liang · Changzhou City, CN
• Zhizhong Tang · Palo Alto, US
• Lihua Hu · Rugby, GB

Key dates

• Filing date: Nov 15, 2011
• Grant date: Jul 25, 2017
• Expiry date: May 25, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2483/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for producing polyurethane foam moldings where the density of the molding is at most 500 g/L, by mixing the following to give a reaction mixture: a) organic polyisocyanates with b) polyesterols, c) blowing agents, d) cell-opening additives selected from the group consisting of homo- or copolymers based on ethylhexyl acrylate, on polybutadiene, on polyisobutene, and on diorganosilicones, or a mixture of two or more of said antifoams, e) silicone-based cell stabilizers and optionally f) chain extenders and/or crosslinking agents, g) catalysts, and h) other auxiliaries and/or additives, and charging the materials to a mold, and permitting them to complete a reaction to give a polyurethane foam molding. The present invention further relates to polyurethane moldings obtainable by this process, and to the use of said moldings as shoe sole, steering wheel, seat, or armrest.