公开(公告)号：EP1669404B1

公开(公告)日：2008-11-19

申请号：EP04762146.1

申请日：2004-09-02

申请人： Polymer Science & Engineering College of Qingdao University of Science & Technology

发明人： YU, Shanpu ,  XU, Fugui ,  LIU, Yuyong ,  HUANG, Zhaoge ,  SHI, Xianzong

IPC分类号： C08L25/00 ,  C08L23/00 ,  C08L23/02

CPC分类号： C08L51/02 ,  C08F251/00 ,  C08F251/02 ,  C08L25/06 ,  C08L33/02 ,  C08L35/06 ,  C08L2666/04 ,  C08L2666/02

摘要： The present invention relates to a new water-disintegrable environmentally friendly macromolecular material formed by blending fine particles of water absorbing resins into polystyrene material and the like, said material will disintegrate into powder in a certain rate or lose its intensity when meets water. The present invention also relates to two kinds of methods for preparing the material. The first method is the blend polymerization method by adding fine particles of water absorbing resins which have particle sizes of up to 5 µ m and initiators into styrene monomers and the like followed by polymerization. The second method is the reverse phase-two phase polymerization method by agitating monomers which will become water absorbing polymer after polymerization, such ais oil-soluble monomer like styrene, sodium acrylate, and methylene bisacrylamide, with water, initiators and W/O type emulsifiers, forming W/O type emulsion, then carrying out polymerization. The material of the present invention has the advantage of simple preparing method, low, cost, water disintegrating rate in control and etc, it can be in place of disposable packing materials such as disposable lunch boxes, foamed polystyrene which pollutes environment heavily and is hard to be recycled at present, etc.

公开(公告)号：EP1669404A1

公开(公告)日：2006-06-14

申请号：EP04762146.1

申请日：2004-09-02

申请人： Polymer Science & Engineering College of Qingdao University of Science & Technology

发明人： YU, Shanpu ,  XU, Fugui ,  LIU, Yuyong ,  HUANG, Zhaoge ,  SHI, Xianzong

IPC分类号： C08L25/06 ,  C08L25/04 ,  C08L23/04 ,  C08L27/06 ,  C08L33/12 ,  C08L31/04

CPC分类号： C08L51/02 ,  C08F251/00 ,  C08F251/02 ,  C08L25/06 ,  C08L33/02 ,  C08L35/06 ,  C08L2666/04 ,  C08L2666/02

摘要： The present invention relates to a novel water-disintegrable environment-friendly macromolecular material formed by blending water absorbent resin particles into polymers, such as polystyrene. Said material will disintegrate into powder or lose its intensity at a certain rate in the presence of water. The present invention also relates to two kinds of processes for preparing said material. The first process is called blending-polynaerization process, wherein water absorbent resin particles with particle size not more than 5 µm, together with an initiator, are added into one or more monomers, such as styrene, to carry out polymerization. The second process is called reverse-phase emulsion polymerization process, wherein a W/O emulsion was firstly formed by agitating a mixture of one or more oil-soluble monomers, such as styrene, one or more water-soluble monomers that will form water-absorbent polymer after polymerization, such as sodium acrylate and methylene bisacrylamide, water, initiators and a W/O emulsifer, and then a polymerization was carried out. The material of the present invention has advantages that its preparation involves low cost, and its water-disintegrating rate is controllable. The material of the present invention can be used to replace the currently used foamed polystyrene type packing materials, especially the packing materials for disposable meal boxes, which are pollutive and difficult to be recycled and degraded.

摘要翻译： 本发明涉及通过将吸水性树脂颗粒混合到聚苯乙烯等聚合物中形成的新型水解性环保型高分子材料。 所述材料将在水存在下以一定速率分解成粉末或失去其强度。 本发明还涉及制备所述材料的两种方法。 第一种方法称为共混 - 聚乳化方法，其中将粒径不大于5μm的吸水性树脂颗粒与引发剂一起加入到一种或多种单体如苯乙烯中以进行聚合。 第二种方法称为反相乳液聚合方法，其中首先通过搅拌一种或多种油溶性单体如苯乙烯，一种或多种将形成水溶性单体的水溶性单体的混合物形成W / O乳液， 聚合后的吸收性聚合物如丙烯酸钠和亚甲基双丙烯酰胺，水，引发剂和W / O乳化剂，然后进行聚合。 本发明的材料具有制备成本低的优点，其分解率可控。 本发明的材料可以用于替代目前使用的发泡聚苯乙烯型包装材料，特别是废弃餐盒的包装材料，其是污染性的并且难以回收和降解。