Preparation of polyolefin based thermoplastic elastomers
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United States of America Patent
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Aug 5, 2003
Grant Date -
Dec 5, 2002
app pub date -
Oct 23, 2001
filing date -
Apr 26, 1993
priority date (Note) -
Expired
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Abstract
The invention relates to a method for manufacturing a sealable and peelable polymer blend, in which method polystyrene and an ethylene copolymer are first melt blended and the obtained blend is further mixed with the same ethylene copolymer either by melt blending or dry blending so that the final polymer blend contains 1-50% by weight polystyrene and 99-50% by weight ethylene copolymer. Ethylene copolymer is preferably ethylene/methyl(meth)acrylate, ethylene/ethyl(meth)acrylate, ethylene/butyl(meth)acrylate or ethylene/vinylacetate copolymer.
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