Orientated gel molding method of polyolefin based resin composition
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United States of America Patent
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May 29, 2001
Grant Date -
N/A
app pub date -
Jul 6, 1999
filing date -
Nov 6, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides method of molding a polyolefin-based resin comprising the steps of dissolving at least one dibenzylidene sorbitol compound in a molten polyolefin resin, cooling the molten resin to a temperature not higher than the sol-gel transition temperature during the cooling cycle to form network-like crystals of the dibenzylidene sorbitol compound, and molding the resulting resin composition at a temperature not lower than the melting temperature of the polyolefin-based resin but not higher than the sol-gel transition temperature during the heating cycle; and a polyolefin resin molded article obtainable by this molding method.
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