Polyurethane foam and process for producing same

US11168172B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Christian Hahn · Leverkusen, DE
• Reinhard Albers · Leverkusen, DE
• Ali-Kasim Anwar · Essen, DE
• Paul Heinz · Forchheim, DE
• Michael Baecker · Cologne, DE
• Marcel Schornstein · Neuss, DE

Key dates

• Filing date: Mar 5, 2018
• Grant date: Nov 9, 2021
• Expiry date: Jun 20, 2038

Classification

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

Abstract

The invention relates to a process used to produce open-cell and extremely fine-cell PUR/PIR rigid foams, said process using a polyol formulation comprising a specific isocyanate-reactive component, a catalyst component having zerewitinoff-active hydrogens and a cell-opener component.