ALKENYL AROMATIC POLYMER FOAM COMPRISING FLUORINATED ALKENE BLOWING AGENTS

摘要

Alkenyl aromatic polymer foam comprising a polymer matrix containing one or more polymer and defining a plurality of cells having an average cell size wherein: (a) the alkenyl aromatic polymer foam has : - (i) an average cell size that is in a range of 0.02 and 5 millimeters; - (ii) a density of 64 kilograms per cubic meter or less; - (iii) an open cell content less than 30 percent; and - (iv) a cell size variation of 30% or less; and wherein the foam further comprises one or more fluorinated alkene blowing agent at a concentration of 0.03 moles or more and 0.3 moles or less per 100 grams of polymer foam.