Artificial leather base material and grain-finished artificial leather

Abstract

Disclosed is an artificial leather base material including: a fabric, and an elastic polymer, fine particles, and a plasticizer that have been applied to the fabric, wherein the elastic polymer includes a (meth)acrylic elastic polymer and a polyurethane, the fine particles have a Mohs hardness of 4 or less, and the product of a bending resistance, a durometer Shore C hardness, and a thickness of the artificial leather base material is 200 to 400 mm 2 . Also disclosed is a grain-finished artificial leather obtained using the artificial leather base material.

1 . An artificial leather base material comprising:
 a fabric, and an elastic polymer, fine particles, and a plasticizer that have been applied to the fabric,   wherein the elastic polymer comprises a (meth)acrylic elastic polymer and a polyurethane,   the fine particles have a Mohs hardness of 4 or less, and   a product of a bending resistance, a durometer Shore C hardness, and a thickness of the artificial leather base material is 200 to 400 mm 2 .   
     
     
         2 . The artificial leather base material according to  claim 1 ,
 wherein the fine particles are included in an amount of 15 to 40 mass %.   
     
     
         3 . The artificial leather base material according to  claim 1 ,
 wherein the elastic polymer is included in an amount of 15 to 40 mass %.   
     
     
         4 . The artificial leather base material according to  claim 1 ,
 wherein the plasticizer is included in an amount of 0.5 to 5 mass %.   
     
     
         5 . The artificial leather base material according to  claim 1 ,
 wherein the fabric is included in an amount of 25 to 69.5 mass %.   
     
     
         6 . The artificial leather base material according to  claim 1 ,
 wherein the elastic polymer is included in an amount of 15 to 40 mass %,   the fine particles are included in an amount of 15 to 40 mass %, and   the plasticizer is included in an amount of 0.5 to 5 mass %.   
     
     
         7 . The artificial leather base material according to  claim 1 ,
 wherein a ratio of the (meth)acrylic elastic polymer to a total of the fine particles and the (meth)acrylic elastic polymer is 5 to 50 mass %.   
     
     
         8 . The artificial leather base material according to  claim 1 ,
 wherein a total of an apparent density of the fine particles and an apparent density of the (meth)acrylic elastic polymer is 0.15 to 0.4 g/cm 3 .   
     
     
         9 . The artificial leather base material according to  claim 1 ,
 wherein the fine particles comprise at least one selected from the group consisting of calcium carbonate, aluminum hydroxide, and talc.   
     
     
         10 . The artificial leather base material according to  claim 1 ,
 wherein the fabric comprises a non-woven fabric of fibers having an average fineness of 0.7 dtex or less.   
     
     
         11 . The artificial leather base material according to  claim 10 ,
 wherein the fibers are polyamide-based fibers.   
     
     
         12 . A grain-finished artificial leather, comprising:
 the artificial leather base material according to  claim 1 , and   a grain-like resin layer formed on at least one surface of the artificial leather base material.   
     
     
         13 . The grain-finished artificial leather according to  claim 12 ,
 wherein the grain-like resin layer has a thickness of 30 to 300 μm.   
     
     
         14 . The grain-finished artificial leather according to  claim 12 ,
 wherein the grain-like resin layer is a coating film.