Soft and low-density foam materials from modified copolymers of ethylene with vinyl acetate and/or alkyl acid
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United States of America Patent
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Aug 7, 1990
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N/A
app pub date -
Dec 19, 1989
filing date -
May 15, 1985
priority date (Note) -
Expired
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Abstract
Soft and low-density foam materials, obtained by means of an extrusion expansion (with physical blowing agents) of particular copolymers of ethylene with vinylacetate (and/or with alkyl esters of acrylic or methacrylic acid), are found to be very suitable for the manufacture of expanded articles with little shrinkage after expansion, free from creases on the surface or cracks on the cell walls, and having excellent characteristics, higher compressive strength and so on.
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