STYRENE FOAMING POLYMERIC COMPOUNDS CONTAINING THE CARBON PARTICLES Russian patent published in 2007 - IPC C08J9/14 C08J9/20 C08L25/04 

FIELD: chemical industry; methods of production of the foaming styrene polymeric compounds containing the particles of carbon.

SUBSTANCE: the invention is pertaining to the present in the form of the granules of the foaming styrene polymeric compounds containing the carbon particles and having the low contents of pentane. The invention presents the description of the method of production of the foaming styrene polymeric compound, in which styrene is polymerized in the water suspension at presence from 0.1 up to 25 mass % of the graphite or smut particles and from 2.5 up to 5.5 mass % of pentane, all in terms of the monomers. After the water flushing, the produced mass is subjected to drying during less than 1 second by the air stream with the temperature from 50 up to 100°С. The invention also describes the granules of the styrene foaming polymeric compound with the bulked weight above 600 g/l. The granules contain from 0.1 up to 25 mass % of the particles of the graphite or the smut, and also the volatile foaming agent representing the mixture composed of from 2.2 up to 5.0 mass % of pentane and from 1 up to 10 mass % of the water, all in terms of the granules of the styrene foaming polymeric compound. The technical result of the invention is production of the granules of the styrene foaming polymeric compound with the high contents of the internal water at the low contents of pentane which possess the high capability to the foaming.

EFFECT: the invention ensures production of the styrene foaming polymeric compound granules with the high contents of the internal water and the low contents of pentane, which have the high capability to the foaming.

9 cl, 3 ex, 1 tbl