Compositions based on vinylidene chloride copolymers stabilized against heat and their use
AssigneeSolvay (Societe Anonyme)
InventorsClaude Michel, Pascale Nagels, Patrick Francoisse, Bernard Guenaire
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Abstract
A composition containing as an epoxide heat stabilizer at least one glycidyl methacrylate copolymer whose epoxy value is at least 0.4. These effective heat stabilizers do not appreciably affect the transparency and the imperviousness of vinylidene chloride copolymers. The composition in question is particularly suited for the extrusion of sheets and films intended for packaging.
Claims14
A composition based on vinylidene chloride copolymers stabilised against heat by the use of an epoxide stabiliser, comprising:
- at least one vinylidene chloride copolymer containing from about 70 to about 96% by weight of monomer units derived from vinylidene chloride;
- an epoxide stabiliser which is at least one glycidyl methacrylate copolymer whose epoxy value is at least 0.4.
A film or sheet for use in packaging, comprising a composition based on a vinylidene chloride copolymers stabilized against heat by an epoxy stabilizer, the composition being comprised of at least one vinylidene chloride copolymer containing from about 70 to about 96% by weight of monomer units derived from vinylidene chloride;
- an epoxide stabilizer which is at least one glycidyl methacrylate copolymer whose epoxy value is at least 0.4.
Dependencies are inferred from the claim text.