公开(公告)号：EP1661943B1

公开(公告)日：2009-07-08

申请号：EP04772527.0

申请日：2004-08-31

申请人： Tonen Chemical Corporation

发明人： SUZUKI, Sadakatsu ,  KIMISHIMA, Kotaro, 504, 3-2, Shiomidai 1-chome ,  TAKITA, Kotaro, 405, 116-3, Setogaya-cho

IPC分类号： C08J9/28 ,  B01D67/00

CPC分类号： B01D67/002 ,  B01D67/0027 ,  B01D67/0088 ,  B01D71/26 ,  B01D2325/20 ,  B01D2325/22

摘要： A method for producing a micro-porous film of a thermoplastic resin, wherein a thermoplastic resin and a solvent for forming a film are together molten and kneaded to form a solution, the solution is extruded from a die and then cooled to prepare a gelated product, the residue of the above solvent for film forming is removed from the gelated product by using a solvent for cleaning, and the solvent for cleaning is removed, which comprises using, as the solvent for cleaning, a solvent having (a) a surface tension at 25°C of 24 mN/m or less, (b) a boiling point under atmospheric pressure of 100°C or lower, and (c) a solubility into water at 16°C of 600 ppm (on mass basis) or less, and further comprises removing the residue of the above solvent for cleaning from the product after the above cleaning by the use of warm water.

公开(公告)号：EP1661943A1

公开(公告)日：2006-05-31

申请号：EP04772527.0

申请日：2004-08-31

申请人： Tonen Chemical Corporation

发明人： SUZUKI, Sadakatsu ,  KIMISHIMA, Kotaro, 504, 3-2, Shiomidai 1-chome ,  TAKITA, Kotaro, 405, 116-3, Setogaya-cho

IPC分类号： C08J9/26

CPC分类号： B01D67/002 ,  B01D67/0027 ,  B01D67/0088 ,  B01D71/26 ,  B01D2325/20 ,  B01D2325/22

摘要： A method for producing a microporous thermoplastic resin membrane comprising the steps of extruding a solution obtained by melt-blending a thermoplastic resin and a membrane-forming solvent through a die, cooling an extrudate to form a gel-like molding, removing the membrane-forming solvent from the gel-like molding by a washing solvent, and removing the washing solvent, the washing solvent having (a) a surface tension of 24 mN/m or less at a temperature of 25°C, (b) a boiling point of 100°C or lower at the atmospheric pressure, and (c) a solubility of 600 ppm (on a mass basis) or less in water at a temperature of 16°C; and the washing solvent remaining in the washed molding being removed by using warm water.

摘要翻译： 一种微多孔热塑性树脂膜的制造方法，其特征在于，将由热塑性树脂和成膜用溶剂通过模具熔融混合得到的溶液挤出，将挤出物冷却而形成凝胶状成型物，除去成膜 （a）在25℃的温度下具有24mN / m或更低的表面张力的洗涤溶剂，（b）具有（a）在25℃的温度下的表面张力为24mN / m或更低的洗涤溶剂，（b） （c）在16℃的温度下在水中的溶解度为600ppm（以质量计）或更少;（c）在大气压下为100℃或更低， 通过使用温水除去洗涤过的模制品中残留的洗涤溶剂。