FIELD: polymer materials.
SUBSTANCE: extruded polymeric foamed plastic with closed cells is claimed showing heat conductivity according to European Norm EN-13164 of the order of 30 mW/m·oK or below and characterized by a wide molecular weight distribution. Product contains residues of foaming agents from as-formed foamed plastic cells using mixture of foaming agents, which includes: main foaming agent (one or more fluorine-containing carbon compounds and optionally carbon dioxide) and secondary foaming agent (C1-C4-alcohol, linear or cyclic C1-C5-hydrocarbon, alkyl halide, water, or mixture thereof).
EFFECT: improved insulating ability and stabilized dimensions.
16 cl, 4 tbl, 4 ex
