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1. 发明授权

US4340701A Removal of olefin monomer from olefin polymer 失效
标题翻译：从烯烃聚合物中除去烯烃单体
公开(公告)号：US4340701A
公开(公告)日：1982-07-20
申请号：US163471
申请日：1980-06-27
申请人： Bruce A. E. Willmore , Jeffrey C. Greaves
发明人： Bruce A. E. Willmore , Jeffrey C. Greaves
IPC分类号： B01J8/00 , B01J8/10 , C08F6/00 , C08F6/28
CPC分类号： B01J8/10 , B01J8/0015 , C08F6/005 , B01J2208/00761
摘要： A solid particulate olefin polymer containing monomer(s) dissolved therein is vigorously agitated mechanically to raise the temperature of the polymer to at least 90.degree. C. This vigorous agitation is effected in the absence of any purge gas and the unpolymerized olefin monomer desorbed from the polymer by the increase in temperature can readily be recovered and recycled to the polymerization vessel. The technique can form part of the work-up process in which the polymer is removed from the polymerization vessel and separated from unconverted monomer(s) prior to isolation. By this technique, propylene is removed from polypropylene without using a purge stream of nitrogen which makes recovery of the propylene difficult and expensive. The technique additionally heats up the polymer which can be advantageous for subsequent processing. Apparatus for effecting the process includes an agitation vessel which is connected, preferably through an intermediate separation vessel, to an olefin polymerization vessel.
摘要翻译：将溶解有其中的单体的固体颗粒状烯烃聚合物机械剧烈搅拌以将聚合物的温度升高至至少90℃。这种剧烈的搅拌在没有任何吹扫气体的情况下进行，并且未聚合的烯烃单体从通过温度升高的聚合物可以容易地回收并再循环到聚合容器中。该技术可以形成处理过程的一部分，其中聚合物从聚合容器中除去并在分离之前与未转化的单体分离。通过这种技术，丙烯从聚丙烯中除去，而不使用氮气吹扫流，这使得丙烯的回收困难且昂贵。该技术另外加热聚合物，这对后续处理是有利的。用于实现该方法的装置包括优选通过中间分离容器连接到烯烃聚合容器的搅拌容器。

2. 发明授权

US4781896A Removal of olefin monomer from olefin polymer 失效
标题翻译：从烯烃聚合物中除去烯烃单体
公开(公告)号：US4781896A
公开(公告)日：1988-11-01
申请号：US450433
申请日：1982-12-16
申请人： Bruce A. E. Willmore , Jeffrey C. Greaves
发明人： Bruce A. E. Willmore , Jeffrey C. Greaves
IPC分类号： B01J8/00 , B01J8/10 , C08F6/00 , B01J8/08
CPC分类号： B01J8/10 , B01J8/0015 , C08F6/005 , B01J2208/00761
摘要： A solid particulate olefin polymer containing monomer(s) dissolved therein is vigorously agitated mechanically to raise the temperature of the polymer to at least 90.degree. C. This vigorous agitation is effected in the absence of any purge gas and the unpolymerized olefin monomer desorbed from the polymer by the increase in temperature can readily be recovered and recycled to the polymerization vessel. The technique can form part of the work-up process in which the polymer is removed from the polymerization vessel and separated from unconverted monomer(s) prior to isolation. By this technique, propylene is removed from polypropylene without using a purge stream of nitrogen which makes recovery of the propylene difficult and expensive. The technique additionally heats up the polymer which can be advantageous for subsequent processing. Apparatus for effecting the process includes an agitation vessel which is connected, preferably through an intermediate separation vessel, to an olefin polymerization vessel.

3. 发明授权

US4283526A Method of treating polymerlatices 失效
标题翻译：聚合物处理方法
公开(公告)号：US4283526A
公开(公告)日：1981-08-11
申请号：US20924
申请日：1979-03-15
申请人： Bala P. Chandra , Jeffrey C. Greaves , Victor G. Lovelock
发明人： Bala P. Chandra , Jeffrey C. Greaves , Victor G. Lovelock
IPC分类号： C08F6/00 , C08F6/16 , C08F6/14
CPC分类号： C08F6/003
摘要： A method of continuously treating an aqueous latex of a synthetic polymer which contains unreacted residual monomer from the polymerization reaction used for the production of the polymer, which method comprises feeding the aqueous latex as a spray into a vessel defining a chamber so that all or a substantial quantity of the droplets of spray avoid contact with the side wall of the chamber, and contacting the falling spray with steam flowing counter-current thereto whereby residual monomer is removed with the flow of steam leaving the chamber. Apparatus for carrying out the method is also claimed. The method is advantageously employed for the removal of residual vinyl chloride monomer from a latex of a vinyl chloride polymer.
摘要翻译：从用于生产聚合物的聚合反应中连续地处理含有未反应的残余单体的合成聚合物的水性胶乳的方法，该方法包括将水性胶乳作为喷雾加入到限定室的容器中，使得全部或大量的喷雾液滴避免与室的侧壁接触，并使落下的喷雾与逆流流动的蒸汽接触，由此残留的单体随着离开室的蒸汽流而被除去。还要求用于执行该方法的装置。该方法有利地用于从氯乙烯聚合物的胶乳中除去残余的氯乙烯单体。

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