Linear ethylene copolymer
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United States of America Patent
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-
May 26, 1987
Grant Date -
N/A
app pub date -
Oct 22, 1984
filing date -
Oct 21, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Ethylene/C.sub.4 -C.sub.20 alpha-olefin copolymers are disclosed which have new characteristics in regard to composition distribution, degree of branching, randomness and crystallinity by DSC melting points. These copolymers have excellent transparency, impact strength, tear strength, blocking resistance, environmental stress cracking resistance, heat resistance and low-temperature heat sealability in a well-balanced combination when they have a density of at least 0.90. When their density is less than 0.90, these copolymers have particularly excellent transparency, impact strength and low-temperature heat sealability, and by incorporating them in various thermoplastic resins, they serve as an excellent modifier for improved impact strength and low-temperature heat sealability.
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