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US 9,850,357 B2Granted
Use of polar additives for enhancing blowing agent solubility in polystyrene
AssigneeFina Technology, Inc.
InventorsWei Wang, Jose M. Sosa, David W. Knoeppel
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Abstract
Foamable polystyrene compositions with enhanced blowing agent solubility and methods of making such polystyrene compositions by incorporating a polar additive in styrenic polymer or copolymers.
Claims8
A foamable polymeric composition comprising:
- a blend comprising a styrenic polymer and from 1.5 to 2.5 weight percent of a polar additive based on the total weight of the styrenic polymer and polar additive;
- wherein the styrenic polymer is a copolymer of a styrenic monomer and hydroxyethyl methacrylate;
- wherein the polar additive is epoxidized linseed oil;
- and
- a blowing agent comprising CO2 incorporated into the blend, wherein the blend exhibits increased solubility of CO2 in comparison to the solubility of CO2 exhibited by the styrenic polymer without the polar additive.
2 more elements
Dependencies are inferred from the claim text.