Granules of coated vinyl acetate/ethylene copolymer, process for producing them and their use as adhesives
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United States of America Patent
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-
Jun 22, 1993
Grant Date -
N/A
app pub date -
Dec 30, 1991
filing date -
Jan 8, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Coextruded granules of coated vinyl acetate/ethylene copolymers consisting of vinyl acetate/ethylene copolymer coated by coextrusion with a polar thermoplastic polymer, such as, for example, poly-(methyl methacrylate) or an ethylene/vinyl acetate copolymer. They are advantageously produced by extrusion drying of a wet coagulate of vinyl acetate/ethylene copolymer to produce a dry, extruded rod, in-line coating of the dry, extruded rod by coextrusion thereof with a polar thermoplastic polymer to produce a coextruded rod, and granulating the coextruded rod. The coextruded granules are not tacky, can be stored without problem, and are useful as coextrusion adhesives.
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