FIELD: chemistry.
SUBSTANCE: invention describes a method of obtaining granules of foaming styrene polymer involving feeding molten polymer, a foaming agent, a nucleating agent and processing additives to a mixing zone, mixing components so as to disperse the foaming agent, the nucleating agent and processing additives in the molten polymer and granulation in conditions which prevent foaming. The method is characterised by that the processing additives are in form of a mixture of aluminium oxide with stearamide taken in ratio of 1:(1-50), in amount of 0.01-0.5% of the weight of the polymer.
EFFECT: exclusion of a separate step for treating polystyrene granules with coating material or other additives.
4 cl, 1 tbl, 10 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCTION OF THE GRANULES OF THE FOAMING STYRENE POLYMERIC COMPOUND | 2005 |
|
RU2295439C2 |
| METHOD OF PREPARING POLYSTYRENE GRANULATE CAPABLE OF FOAMING | 2009 |
|
RU2398791C1 |
| COMPOSITION FOR PRODUCING EXPANDABLE POLYSTYRENE | 2009 |
|
RU2427595C2 |
| METHOD OF PRODUCING FOAMABLE POLYSTYRENE GRANULATE | 2010 |
|
RU2448130C2 |
| METHOD FOR PRODUCTION OF SELF-EXTINGUISHING FOAMING POLYSTYRENE | 1997 |
|
RU2155193C2 |
| METHOD OF MAKING FOAMED POLYSTYRENE SLABS WITH HIGH COMPRESSION STRENGTH | 2009 |
|
RU2400494C1 |
| METHOD FOR RECYCLING OF BIAXIALLY ORIENTED POLYSTYRENE FILM WASTES | 2006 |
|
RU2356732C2 |
| METHOD OF PRODUCING FOAMED VINYL AROMATIC POLYMERS WITH LOW THERMAL CONDUCTIVITY BY SUSPENSION POLYMERISATION | 2010 |
|
RU2526045C2 |
| COMPOSITION, BASED ON FOAMED VINYLAROMATIC POLYMERS WITH IMPROVED HEAT-INSULATING ABILITY, METHODS OF ITS OBTAINING AND FOAMED PRODUCT, OBTAINED FROM THEREOF | 2009 |
|
RU2526549C2 |
| SELF-EXTINGUISHING FOAMED POLYSTYRENE | 2008 |
|
RU2407760C2 |
