Isocyanate-based foam having improved anti-yellowing properties and process for production thereof

US8802746B2 · kind B2 · utility

Assignee

• PROPRIETECT L.P. · CA

Inventors

• Wen Zhao · Mississauga, CA
• Mladen Vidakovic · Duisburg, DE
• Eugene Smeianu · Thornhill, CA

Key dates

• Filing date: May 31, 2011
• Grant date: Aug 12, 2014
• Expiry date: May 31, 2031

Classification

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

Abstract

There is described an isocyanate-based polymer foam having improved anti-yellowing properties. The foam produced from a formulation comprising an isocyanate, a blowing agent, a first active hydrogen-containing compound and a second active hydrogen-containing compound different than the first active hydrogen-containing compound. The second active hydrogen-containing compound comprises an active hydrogen-containing phosphite compound. A process for producing such a foam is also described.