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US 5,202,188 AGranted
Vinylidene chloride film
AssigneeW. R. Grace & Co.-Conn.
InventorSolomon Bekele
Life of this patent
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Abstract
A film with properties such as good thermal stability, enhanced extrudability, improved oxygen barrier properties, and reduced stickiness to metal surfaces is made by the use of a vinylidene chloride composition with small amounts of a plasticizer (such as epoxidized oil or epoxidized alpha olefin), and acrylate/styrene polymer (such as methyl methacrylate/butyl acrylate/styrene polymer) or poly(alpha-methylstyrene).
Claims8
A multi-layer polymeric film comprising:
- (a) first and second polymeric surface layers;
- and
- (b) a vinylidene chloride polymeric layer disposed between said surface layers comprising:
- (1) 1% to 4% plasticizer;
- (2) 1 to 4% acrylate/styrene polymer;
- and
- (3) the balance of 92% to 98% comprising at least one vinylidene chloride polymer.
4 more elements
Dependencies are inferred from the claim text.