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公开(公告)号：US20070066693A1
公开(公告)日：2007-03-22
申请号：US10568771
申请日：2004-07-14
IPC分类号： C08J9/00
CPC分类号： C08J9/16 , C08J9/0061 , C08J9/20 , C08J2203/14 , C08J2325/06 , C08J2491/00
摘要： The invention relates to an expandable polystyrene composition in the form of expandable beads, comprising by weight (1) 100 parts of a styrene polymer, (2) from 2.2 to less than 4.0 parts of at least one blowing agent, and (3) from 0.01 to 0.4 part of at least one plasticizing. The composition is particularly useful for manufacturing medium density expanded moulded polystyrene objects, particularly with a density from 40 to 190 g/l. The invention also relates to a process for manufacturing such objects, employing an expandable polystyrene composition in the form of beads containing by weight (1) 100 parts of a styrene polymer, (2) from 2.2 to less than 4.0 parts of at least one blowing agent, and (3) from 0 to 0.4 part of at least one plasticizing agent. The process comprises (i) a pre-expansion stage by heating the expandable beads so as to form pre-expanded beads with a bulk density of 40 to 190 g/l, (ii) a stabilization stage by contacting the pre-expanded beads with a gaseous medium at 0 to 40° C., under an absolute pressure of 50 to 160 kPa, for a period of 6 to 48 hours, and (iii) a moulding stage by introducing and heating the beads thus stabilized into a mould. The invention also relates to pre-expanded beads with a bulk density of 40 to 190 g/l, containing by weight (a) 100 parts of a styrene polymer, (b) from 0.5 to less than 3.0 parts of at least one blowing agent, and (c) from 0 to 0.4 part of at least one plasticizing agent.
摘要翻译： 本发明涉及可发泡珠粒形式的可发性聚苯乙烯组合物，其包含：（1）100份苯乙烯聚合物，（2）2.2至小于4.0份至少一种发泡剂，和（3） 0.01至0.4份至少一种增塑剂。 该组合物特别适用于制造中密度发泡模塑聚苯乙烯物体，特别是密度为40至190g / l。 本发明还涉及一种用于制造这种物体的方法，使用以重量计的珠粒形式的可发性聚苯乙烯组合物（1）100份苯乙烯聚合物，（2）2.2至小于4.0份至少一种吹塑 试剂，和（3）0至0.4份至少一种增塑剂。 该方法包括（i）通过加热可膨胀珠粒以形成体积密度为40至190g / l的预发泡珠粒的预膨胀阶段，（ii）通过使预发泡的珠粒与 0至40℃的气态介质，绝对压力为50至160kPa，时间为6至48小时;以及（iii）通过引入和加热稳定到模具中的珠粒的成型阶段。 本发明还涉及体积密度为40至190g / l的预发泡珠粒，其含量为（a）100份苯乙烯聚合物，（b）0.5至小于3.0份的至少一种发泡剂 ，和（c）0至0.4份至少一种增塑剂。
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2.发明授权Process for the gas-phase (co-)polymerization of olefins in a fluidized bed reactor 失效流化床反应器中烯烃气相（共）聚合的方法公开(公告)号：US06946530B2
公开(公告)日：2005-09-20
申请号：US10492755
申请日：2002-10-04
申请人： Alexandre Gallice , Vince Reiling , Jean-Loic Selo
发明人： Alexandre Gallice , Vince Reiling , Jean-Loic Selo
IPC分类号： C08F2/00 , C08F2/34 , C08F10/00 , C08F210/16
CPC分类号： C08F10/00 , C08F210/16 , Y10S526/901 , C08F2/005 , C08F210/14 , C08F2500/18 , C08F2500/12 , C08F2500/24
摘要： The present invention relates to a process for the gas-phase (co-)polymerization of olefins in a fluidized bed reactor wherein fouling is prevented and/or flowability of polymer is improved thanks to the use of a process aid additive.
摘要翻译： 本发明涉及一种在流化床反应器中进行气相（共）聚合的方法，其中通过使用加工助剂添加剂，防止了聚合物的结垢和/或流动性的提高。
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公开(公告)号：US08536240B2
公开(公告)日：2013-09-17
申请号：US10568771
申请日：2004-07-14
CPC分类号： C08J9/16 , C08J9/0061 , C08J9/20 , C08J2203/14 , C08J2325/06 , C08J2491/00
摘要： An expandable polystyrene composition in the form of expandable beads, comprising by weight (1) 100 parts of a styrene polymer, (2) from 2.2 to less than 4.0 parts of at least one blowing agent, and (3) from 0.01 to 0.4 part of at least one plasticizing. The composition is particularly useful for manufacturing medium density expanded moulded polystyrene objects, particularly with a density from 40 to 190 g/l. A process for manufacturing such objects,is provided, together with pre-expanded beads with a buld density of 40 to 190 g/l, containing by weight (a) 100 parts of a styrene polymer, (b) from 0.5 to less than 3.0 parts of at least one blowing agent, and (c) from 0 to 0.4 part of at least one plasticizing agent.
摘要翻译： 发泡珠形式的可发性聚苯乙烯组合物，其包含（1）100份苯乙烯聚合物，（2）2.2至小于4.0份至少一种发泡剂，和（3）0.01至0.4份 的至少一种增塑剂。 该组合物特别适用于制造中密度发泡模塑聚苯乙烯物体，特别是密度为40至190g / l。 提供了一种制造这种物体的方法，连同预先发泡的珠粒一起，其密度为40至190g / l，包含重量百分比（a）100份苯乙烯聚合物，（b）0.5至小于3.0 至少一种发泡剂的部分，和（c）0至0.4份至少一种增塑剂。
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