发明名称 |
Process for the manufacture of halogen-containing resin particles of larger bulk density comprising mixing particles of the resin with inorganic salts, treated in a mixture in a gaseous phase and separating the inorganic salt from the product |
摘要 |
This invention relates to a compactingly processing method for the manufacture of spherical particles, having a heavier apparent specific gravity, of halogen-containing ethylene resin. In this method, 100 wt. parts of particles of the resin are mixed with 20-500 wt. parts of one or more of heat-resisting inorganic salts having particle sizes of 0.01-50 mu . This mixture is subjected to a heat treatment in a gaseous phase at a temperature higher than the melting point of the resin, and then, the once added inorganic salt or salts is/are separated from the heat-treated intermediate products. In this way, the resin particles are subjected to a substantial compacting and size reduction.
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申请公布号 |
US4391763(A) |
申请公布日期 |
1983.07.05 |
申请号 |
US19810223947 |
申请日期 |
1981.01.12 |
申请人 |
KUREHA KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
UENO, KUNIHIKO;ISHII, AKIYASU;HUKUDA, MASAZI;NAKAYAMA, KAZUYUKI |
分类号 |
C08J3/12;C08J9/26;(IPC1-7):B29C23/00 |
主分类号 |
C08J3/12 |
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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