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US 4,287,258 AGranted
Particulate styrene polymers containing blowing agent
AssigneeBASF SE
InventorsKlaus Hahn, Hans P. Rath, Manfred Walter
Life of this patent
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Abstract
Particulate styrene polymers which contain a blowing agent and are surface-coated with a glycerol dialkyl ether, preferably mixed with a glycerol ester. The particles can be foamed, and the foamed particles can be fused to form moldings.
Claims4
A particulate styrene polymer, containing blowing agent, which is surface-coated with from 0.05 to 1% by weight of a glycerol dialkyl ether.
Dependencies are inferred from the claim text.