CYANATE-BASED, CARBON DIOXIDE-FILLED STRUCTURED FOAMS AND METHOD FOR THEIR PRODUCTION

• Main Authors: VIETH, SIEGFRIED, BAUER, MONIKA
• Format: Patent
• Language: English; French
• Published: 24.02.2009
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The present invention concerns a polycyanurate foam comprising the structura l element A and either terminal amino groups and/or at least one of the following structural elements B, C, or D: (see formulas A, B, C or D) wherein the foam has closed pores that contain carbon dioxide. This foam can be produced in that a substance is worked into the starting material for the polycyanurate that releases water or alcohol approximately at the start of polymerization spontaneously or thermally or catalytically induced. The water/alcohol reacts with free cyanate groups under cleavage of CO2. The resulting amino groups can react further in the polymerization.