EXTRUDED POLYMER FOAM MATERIALS CONTAINING ADDITIVES IMPARTING REFRACTORY PROPERTIES, BASED ON BROMATED FATTY ACIDS Russian patent published in 2013 - IPC C08J9/04 C08K5/02 C08K5/95 B29C67/20 

FIELD: chemistry.

SUBSTANCE: invention relates to a foamed refractory polymer material such as foamed polymers and copolymers of styrene which contain substances which impart refractory properties, based on bromated fatty acid, and a method for production thereof. The method involves production of a molten mixture of a combustible polymer, an additive which imparts refractory properties and a foaming agent. A molten mixture under pressure is brought to temperature of at least 200°C, after which it is extruded into a low pressure zone in which the mixture is foamed and cooled to form a foamed polymer with density of 16-480 kg/m³. The additive which imparts refractory properties used is at least one bromated fatty acid, an ester, an amide or an ester-amide of bromated fatty acid, a glyceride of one or more bromated fatty acids, a polymerised bromated fatty acid, or a mixture of any two or more substances from the above-mentioned in an amount which provides 0.1-30 pts.wt bromine per 100 parts of the combined weight of the combustible polymer, the additive which imparts refractory properties and the foaming agent.

EFFECT: foamed refractory polymer material made according to the invention exhibits excellent fire resistance.

13 cl, 3 tbl, 17 ex