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US 5,474,855 AGranted
Heat sealable polystyrene based blends
AssigneeThe Dow Chemical Company
InventorCornelis Antheunisse
Life of this patent
Estimating the term…
Abstract
A sealable, thermoplastic molding composition which can be employed to seal dairy food containers, comprising from about 20 to about 60% by weight of an optionally rubber-reinforced styrenic resin; from about 30 to about 70% of a styrene-butadiene-styrene block copolymer; and from about 4 to about 40% of a copolymer of ethylene and acrylic acid.
Claims19
A composition comprising a blend of:
- from about 20 to about 60% by weight of an optionally rubber-reinforced styrenic resin;
- from about to about 70% of a styrene-butadiene-styrene block copolymer comprising from about 10 to about 50% styrene units;
- and from about 4 to 40% of a copolymer of ethylene and acrylic acid;
- said percentages being based on the total weight of the composition.
1 more element
A composition comprising a blend of:
- from about 45 to about 55% by weight of a rubber-reinforced styrenic resin;
- from about 33 to about 55% by weight of a styrene-butadiene-styrene block copolymer comprising from about 10 to about 50% styrene units;
- and from about 4 to about 40% by weight of an ethylene acrylic acid copolymer;
- said percentages being based on the total weight of the composition.
1 more element
Dependencies are inferred from the claim text.