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US 4,304,797 AGranted
Fast-cooling styrene polymer foams
AssigneeArco Polymers, Inc.
InventorJohn P. Spicuzza
Life of this patent
Estimating the term…
Abstract
Expandable styrene polymer particles which have fast cooling rates during molding are produced by dry blending styrene polymer particles in the presence of 0.06 to 0.60 parts of decaglyceroloctaoleate per 100 parts of polymer particles. The oleate may be added as sole fast cool agent or in addition to the known internal additives which impart fast cool properties.
Claims5
Method of making foamable styrene polymer particles which yield fast cooling foamed moldings comprising intimately mixing a dry blend of
- (a) styrene polymer particles containing 3 to 20 weight percent of a blowing agent, and
- (b) 0.06 to 0.6 weight percent of decaglyceroloctaoleate.
Dependencies are inferred from the claim text.