Alkenyl aromatic foam with low solubility hydrofluorocarbon

• Main Authors: FOX RICHARD T, GRIFFIN WARREN H, VO VANAU, HOOD LAWRENCE S, GORDON-DUFFY JOHN, SMITH ROY E
• Format: Patent
• Language: English
• Published: 22.07.2014
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

Prepare a closed-cell alkenyl aromatic polymer foam by an extrusion process using a blowing agent composition that contains at least 30 weight-percent of the chlorine-free hydrofluorocarbon blowing agent such that the foam has a density of 48 kilograms per cubic meter or less, contains more than 50...