Intumescent flexible polyurethane foam having incorporated into the reaction mixture an aliphatic aldehyde

US4275169A · kind A · utility

Assignee

• Tenneco Chemicals, Inc. · US

Inventors

• Bernard Rudner · Ridgewood, US
• Herman Stone · Hazleton, US

Key dates

• Filing date: Sep 19, 1979
• Grant date: Jun 23, 1981
• Expiry date: Sep 19, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/04
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Flexible polyurethane foam having reduced tendency to form burning embers and which produces a char when it is ignited and burned is provided by incorporating into the reaction mixture before foaming an aldehyde or an aldehyde generator. In a preferred embodiment, flexible polyurethane foam of increased flame retardance is provided by also incorporating a flame retardant into the reaction mixture before foaming.