Nova Patents
EP0530622B1

Vinylidene chloride composition and film made therefrom

Abstract

This record has no abstract on file.

Term

Term ended

Expired 21 August 2012, 14.1 years ago.

  1. Priority
  2. Filed
  3. Granted
  4. Expired
  5. Today

11 claims: 8 independent, 3 dependent

  1. 1
    A multi-layer polymeric film comprising:a) first and second surface layers;and b) disposed between said surface layers, a polymeric layer consisting essentially of 1) 1 to 4 % by weight of a plasticizer, 2) 1 to 4 % by weight of a polymer comprising mer units derived from butyl acrylate, butyl methacrylate, and methyl methacrylate, and 3) the balance comprising at least one polymer comprising mer units derived from vinylidene chloride.
  2. 4
    The film of claims 1 to 3 wherein said plasticizer comprises an epoxy group.
  3. 6
    The film of any of claims 1 to 3 wherein said plasticizer is tetraethylene glycol di(2-ethylhexoate).
  4. 7
    The film of any of claims 1 to 6 wherein said at least one polymer comprising mer units derived from vinylidene chloride further comprises mer units derived from at least one of vinyl chloride, acrylonitrile, and an alkyl acrylate.
  5. 8
    The film of any of claims 1 to 7 wherein at least one layer of said film is biaxially oriented.
  6. 9
    The film of any of claims 1 to 7 wherein said film is cross-linked.
  7. 10
    The film of any of claims 1 to 9 wherein said polymer comprising mer units derived from butyl acrylate, butyl methacrylate, and methyl methacrylate comprises 19 % by weight of butyl acrylate, 29% by weight of butyl methacrylate, and 53% by weight of methyl methacrylate, with an error of 10%.
  8. 11
    The film of any of claims 1 and 10 wherein said polymeric layer b) further comprises calcium ricinoleate.
Independent claims8