发明名称 |
Preliminarily foamed particles of non-crosslinked polypropylene-type resin |
摘要 |
Preliminarily foamed particles of a non-crosslinked polypropylene-type resin based on a mixture of 10 to 95% by weight of an alpha-olefin/propylene random copolymer having an amount of the heat of crystallization of not more than 10 cal/g in differential scanning calorimetry and 90 to 5% by weight of an ethylene/propylene random copolymer as a base resin, said preliminarily foamed particles having such a crystal structure that when a DSC curve is drawn by heating 1 to 3 mg of the preliminarily foamed particles to 220 DEG C. at a rate of 10 DEG C./min. by means of a differential scanning calorimeter, a high temperature peak is observed at a higher temperature than the temperature of the peak inherent to the base resin. These preliminarily foamed articles can be molded under lower vapor pressures than in the prior art.
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申请公布号 |
US4567208(A) |
申请公布日期 |
1986.01.28 |
申请号 |
US19840678679 |
申请日期 |
1984.12.05 |
申请人 |
JAPAN STYRENE PAPER CORPORATION |
发明人 |
KUWABARA, HIDEKI;SUDO, YOSHIMI |
分类号 |
C08J9/16;C08J9/18;C08J9/228;C08L23/14;(IPC1-7):C08J9/16;C08L23/20 |
主分类号 |
C08J9/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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