公开(公告)号：US20040058135A1

公开(公告)日：2004-03-25

申请号：US10663969

申请日：2003-09-16

Applicant: Kodak Polychrome Graphics, LLC

Inventor： Ranjan C. Patel ,  Jon C. Vogel ,  Keith P. Parsons ,  Graham Spence ,  Alan J. Lindsay ,  Rachel J. Hobson ,  Luke C. Williams

IPC: B32B005/24

CPC classification number: B41M5/508 ,  B41M5/0047 ,  B41M5/0064 ,  B41M5/52 ,  B41M5/5218 ,  B41M5/5236 ,  B41M5/5254 ,  C08J9/26 ,  C08J2201/0462 ,  Y10T428/24802 ,  Y10T428/249962 ,  Y10T428/2933

Abstract: A method for manufacturing a microporous film comprising the steps of: (a) providing a first polymer which is a hydrophobic thermoplastic polymer and a second polymer which is a hydrophilic polymer or copolymer of N-vinylpyrrolidone; (b) dissolving said first and second polymers in a solvent system which is compatible with both polymers, said solvent system comprising a blend of an aprotic organic solvent and an alcohol; (c) coating the resulting solution on a support; (d) effecting at least a partial drying of the resulting coating; and (e) washing the coating in an aqueous medium so as to extract at least 50% by weight of the said second polymer. Image accepting members comprising a microporous film made by the above method, and preferably comprising a support which is also microporous.

Abstract translation: 一种制造微孔薄膜的方法，包括以下步骤：（a）提供作为疏水性热塑性聚合物的第一聚合物和作为N-乙烯基吡咯烷酮的亲水性聚合物或共聚物的第二聚合物; （b）将所述第一和第二聚合物溶解在与两种聚合物相容的溶剂体系中，所述溶剂体系包含非质子有机溶剂和醇的共混物; （c）将所得溶液涂布在支撑体上; （d）对所得涂层进行至少一部分干燥; 和（e）在水性介质中洗涤涂层，以提取至少50重量％的所述第二聚合物。 包含由上述方法制成的微孔膜的图像承载构件，优选包括也是微孔的载体。