发明名称 |
Process for the admixture of additives into plastics with simultaneous removal of volatile constituents |
摘要 |
A process for admixing additives to plastics and simultaneously removing volatile constituents in a horizontal devolatilizing extruder. Taken in sequence in the direction of flow, the additives are first introduced into the devolatilizing extruder from above, and the plastic melt, solution or dispersion is then introduced from below, while the bulk of the volatile constituents are withdrawn from the devolatilizing extruder at an orifice located vertically above the point at which the plastic is fed in. The process permits the removal of volatile constituents with simultaneous admixture of additives during aftertreatment of plastics, in a single step and at very high throughputs.
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申请公布号 |
US4065532(A) |
申请公布日期 |
1977.12.27 |
申请号 |
US19750564618 |
申请日期 |
1975.04.03 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
WILD, HANS;JECKEL, GUENTER;ECHTE, ADOLF;ZIZLSPERGER, JOHANN;REFFERT, RUDI WILHELM;THIELEN, GUNTER |
分类号 |
B29C31/00;B29B7/00;B29B9/00;B29C31/02;B29C47/00;B29C47/10;B29C47/76;(IPC1-7):B29B1/04;B29B1/10 |
主分类号 |
B29C31/00 |
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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