Particulate expandable polystyrene (EPS), process for making particulate expandable polystyrene, as well as a particular application of polystyrene foam material
AssigneeSynbra Technology B.V.
InventorJan Noordegraaf
Life of this patent
Estimating the term…
Abstract
The present invention relates to a particulate expandable polystyrene (EPS) that can be processed into a foam with a fine cell structure and a low density and contains a material for increasing the thermal insulation value, to improve the thermal insulation value hereof. The present invention also relates to a method for the production of a particulate expandable polystyrene (EPS) and to a foam material based on polystyrene.
Claims19
A particulate expandable polystyrene that can be processed into a foam with a fine cell structure and a low density and contains a material for increasing the thermal insulation value, to improve the thermal insulation value thereof, the particulate expandable polystyrene consisting of polystyrene polymer particles that consist of a polystyrene polymer, which particles contain a material for increasing the thermal insulation value chosen from the group consisting of zeolites and silicates, wherein the amount of material for increasing the thermal insulation value is 1.5-7 wt. %, based on the polystyrene polymer.
A method for the production of particulate expandable polystyrene, wherein the particulate expandable polystyrene consists of polystyrene polymer particles, a blowing agent, and a material for increasing the thermal insulation value, said method consisting of mixing the particulate expandable polystyrene, blowing agent, and material for increasing thermal insulation value in an extruder, the resultant mixture of which is extruded, cooled, and reduced to particles, wherein the material for increasing the thermal insulation value is chosen from the group consisting of zeolites and silicates, and wherein the amount of material for increasing the thermal insulation value is 1.5-7 wt % based on the polystyrene polymer particles.
Dependencies are inferred from the claim text.