Open-cell rigid polyurethane foam and the use thereof

US11001665B1 · kind B1 · utility

Assignee

• Covestro Intellectual Property GmbH & Co. KG · DE

Inventors

• Marcel Schornstein · Neuss, DE
• Peter Nordmann · Dormagen, DE
• Marina Reithmeier · Cologne, DE

Key dates

• Filing date: Apr 23, 2019
• Grant date: May 11, 2021
• Expiry date: Apr 23, 2039

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F25D2201/14
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to open- and fine-celled rigid polyurethane foams which contain not only urethane groups (PUR) but also isocyanurate groups (PIR) and carbodiimide groups (CD) and to the use thereof in vacuum insulation panels.