WATER-SOLUBLE POLYVINYL ALCOHOL RESIN FIBER AND NONWOVEN FABRICS MADE BY USING THE SAME
申请人:The Nippon Synthetic Chemical Industry Co., Ltd.
公开号:EP2112257A1
公开(公告)日:2009-10-28
A water-soluble polyvinyl alcohol resin filament is provided, which is formed by melt-spinning a material consisting essentially of a water-soluble polyvinyl alcohol resin having a 1,2-diol structural unit represented by the following general formula (1). A nonwoven fabric is also provided, which is produced by using the water-soluble polyvinyl alcohol resin filament. Therefore, the nonwoven fabric is excellent in water solubility at a lower temperature, and substantially free from bubbling during dissolution thereof in water. In addition, a fully saponified PVA can be used for melt-forming. This suppresses emanation of acetic acid odor, thereby improving the working environment.
wherein R1, R2, R3, R4, R5 and R6, which may be the same or different, are each a hydrogen atom or a monovalent organic group, and X is a single bond or a connecting chain.
本发明提供了一种水溶性聚乙烯醇树脂长丝,它是通过熔融纺丝形成的,这种材料主要由水溶性聚乙烯醇树脂组成,该聚乙烯醇树脂具有由以下通式(1)表示的 1,2-二醇结构单元。此外,还提供了一种无纺布,该无纺布是通过使用水溶性聚乙烯醇树脂长丝生产的。因此,这种无纺布在较低温度下的水溶性极佳,而且在水中溶解时基本上不会产生气泡。此外,完全皂化的 PVA 可用于熔体成型。这可以抑制醋酸气味的散发,从而改善工作环境。
其中 R1、R2、R3、R4、R5 和 R6(可以相同或不同)各自为氢原子或单价有机基团,X 为单键或连接链。