Improvements in the treatment of polymers

  • Inventors:
  • Assignees: Celanese Corp
  • Publication Date: March 23, 1966
  • Publication Number: GB-1023212-A

Abstract

An oxymethylenepolymer is stabilized by incorporation therein of an epoxy compound containing at least two epoxy groups in the molecule and is monomeric unless the polymer is a copolymer containing adjacent carbon atoms when the epoxy compound may also be a resin. Specified epoxy compounds are dicyclopentadiene dioxide vinylcyclohexene dioxide, 3,4 - epoxy - 6 - methylcyclohexyl-methyl - 3,4 - 6 - methyl cyclohexane carboxylate, resorcinol diglycidyl ether and epoxidized drying oils. Phenolic stabilizers may also be present, e.g. diphenylol methane or 2,21-methylene - bis - (4 - methyl - 6 - tertiary butyl phenol). The polymers may be end capped either by esterification or by etherification.

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    WO-9111487-A1August 08, 1991The Dow Chemical CompanyCompositions de melanges de copolymeres de styrene ayant une stabilite des couleurs amelioree