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公开(公告)号：US20160244573A1
公开(公告)日：2016-08-25
申请号：US15048848
申请日：2016-02-19
发明人： Robert Roden , Prakash Hadimani , Sambhu Bhadra
CPC分类号： C08J3/005 , B29B7/429 , B29C48/2564 , B29C48/402 , B29C48/507 , B29C48/59 , B29C48/67 , B29K2025/06 , B29K2065/00 , B29K2071/00 , B29K2225/04 , C08J2325/06 , C08J2371/00 , C08J2425/06 , C08J2471/00 , C08L25/04 , C08L25/06 , C08L51/04 , C08L71/00 , C08L2205/06 , C08L71/12
摘要： A process for preparing a blend having a styrene resin and a polyphenylene ether in a co-rotating twin screw processor is described. A blend having a styrene resin and a polyphenylene ether is also described. A co-rotating screw processor for preparing a blend having a styrene resin and a polyphenylene ether comprising two processing zones is also described.
摘要翻译： 描述了在同向旋转双螺杆处理器中制备具有苯乙烯树脂和聚苯醚的共混物的方法。 还描述了具有苯乙烯树脂和聚苯醚的共混物。 还描述了一种用于制备具有苯乙烯树脂和包含两个处理区的聚苯醚的共混物的共旋转螺杆处理器。
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公开(公告)号：US20190091915A1
公开(公告)日：2019-03-28
申请号：US15767742
申请日：2016-10-12
发明人： Babu Padmanabhan , Robert Roden , Sambhu Bhadra
IPC分类号： C08F220/06 , B29C35/08 , B29K33/00
摘要： A process for preparing hydrogels is disclosed. Said process comprises passing reactants comprising a monomer, an initiator and a cross-linker through a co-rotating twin screw extruder, the co-rotating twin screw extruder being operated at a screw speed of at least 200 rpm and comprising an inlet zone, an outlet zone, and in between the inlet zone and the outlet zone at least one mixing zone, at least one conveying zone and at least one back-mixing zone, wherein the back-mixing zone comprises of restricting elements which restrict the reactants from moving forward in the co-rotating twin screw extruder until a forward force sufficient to overcome the restriction is achieved, such that the co-rotating twin screw extruder provides sufficient shear energy and residence time to the reactants to (co)polymerize and produce hydrogel having a water uptake greater than 100 g/g.
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