申请人:Kuraray Co., Ltd.
公开号:EP1041191A2
公开(公告)日:2000-10-04
A fibrous substrate, in particular a fibrous substrate comprising a microfine fiber-forming fiber is impregnated with a composite resin emulsion obtained by emulsion-polymerizing an ethylenically unsaturated monomer (B) in the presence of a polyurethane-based emulsion (A) at a weight ratio of the (A) / the (B) of 90/10 to 10/90, the emulsion having heat-sensible gelatinizing ability making it possible to supply a film having a specific elastic modulus. Subsequently, the emulsion is gelatinized. In the case that the fibrous substrate is a microfine fiber-forming fiber, this fiber is converted into a microfine fiber bundle. In this way, a leather-like sheet is produced. This process makes it possible to obtain a leather-like sheet having excellent softness and fulfillment feeling, and good hand touch, feel and physical properties like natural leather. In the case that the fibrous substrate particularly comprises a microfine fiber, it is possible to obtain a leather-like sheet having the above-mentioned characteristics and suede-like high-quality.
一种纤维基材,特别是一种由微细纤维成型纤维组成的纤维基材,被浸渍在一种复合树脂乳液中,该乳液是在聚氨酯基乳液(A)存在下,通过乳液聚合乙烯基不饱和单体(B)而获得的,(A)/(B)的重量比为 90/10 至 10/90,该乳液具有热感应胶化能力,可以提供具有特定弹性模量的薄膜。随后,乳液被凝胶化。如果纤维基质是微细纤维成型纤维,则将其转化为微细纤维束。通过这种方式,就能生产出类似皮革的薄片。通过这种工艺,可以获得具有极佳的柔软性和舒适感,以及良好的手感、触感和物理特性的仿皮革片材,如同天然皮革一样。如果纤维基材特别包括微细纤维,则有可能获得具有上述特性和麂皮质感的仿皮片材。