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Artificial leather for automobile interior materials and method for producing the same

A technology for synthetic leather and vehicle interiors, applied in vehicle parts, chemical instruments and methods, synthetic resin layered products, etc. Effect

Active Publication Date: 2010-10-06
HONDA MOTOR CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the synthetic leathers cited in Patent Documents 1 to 3 have a wet microporous layer, so there is a problem that sufficient wear resistance cannot be obtained as a synthetic leather for vehicle interior materials, and environmental pollution due to the use of solvents in the manufacturing process problems like stress
[0006] On the other hand, in the synthetic leather cited in Patent Document 4, the skin layer formed of moisture-curable hot-melt polyurethane resin is directly bonded to the fibrous base material, so there are uneven pores formed in the skin layer of the polyurethane resin, The problem that touch and texture become rough

Method used

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  • Artificial leather for automobile interior materials and method for producing the same
  • Artificial leather for automobile interior materials and method for producing the same
  • Artificial leather for automobile interior materials and method for producing the same

Examples

Experimental program
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Effect test

Embodiment

[0087] The present invention will be further described in detail through examples below, but the present invention is not limited to the following examples. "Parts" in the examples are based on weight. In addition, the evaluation of the obtained synthetic leather followed the following method.

[0088] [touch]

[0089] Using one test piece of A4 size (width 210mm, length 297mm), judge according to the following criteria when the surface of the synthetic leather (the surface of the protective layer) is pressed with the ball of the finger while it is placed on the flat plate, and it is moved slowly for 10cm touch.

[0090] ○: The surface is deformed, and there is a feeling that the synthetic leather surface is adsorbed on the fingertips

[0091] △: The surface is slightly deformed, but there is no feeling that the synthetic leather surface is adsorbed on the fingertips

[0092] ×: There is no deformation at all on the surface, and there is no feeling that the synthetic leath...

manufacture example 1

[0108] In a 1-liter 4-neck flask kept at 60°C, add 100 parts of polycarbonate polyols with a number average molecular weight of 2000 (trade name "Kurare Polyol C2090", manufactured by Co., Ltd.), 100 parts with a number average molecular weight of 2000 2000 polyether polyol (trade name "PTMG2000", manufactured by Sanyo Chemical Industry Co., Ltd.) and after stirring, add 19 parts of 4,4'-diphenylmethane diisocyanate (MDI), and stir at 80°C until the isocyanate group disappeared (the equivalent ratio (hydroxyl group / isocyanate group) was 1.3), and a urethane polyol prepolymer was obtained.

manufacture example 2

[0110] In a 1-liter 4-necked flask kept at 60° C., 170 parts of number average molecular weights were added to 2000 polyester polyols (trade name "Kurare Polyol P 2010", manufactured by Co., Ltd. Kurare), 30 parts number average molecular weights of 2000 2000 polyether polyol (trade name "PTMG2000", manufactured by Sanyo Chemical Industry Co., Ltd.) and after stirring, add 19 parts of 4,4'-diphenylmethane diisocyanate (MDI), and stir at 80°C until the isocyanate group disappeared (the equivalent ratio (hydroxyl group / isocyanate group) was 1.3), and a urethane polyol prepolymer was obtained.

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Abstract

An artificial leather comprises a fibrous substrate having laminated on one side thereof an adhesive layer comprising a polyurethane resin formed by a moisture curing reaction of a urethane polyisocyanate prepolymer, a surface layer comprising a polyurethane resin formed by a reaction between a urethane polyol prepolymer and a urethane hardener, and a protective layer comprising a polyurethane resin, in this order. The urethane polyol prepolymer used in the formation of the surface layer is obtained by reacting a polyol containing polyether polyol, and a polyisocyanate, and weight proportion of the polyether polyol is 40% by weight or more based on the total weight of the urethane polyol prepolymer and the urethane hardener. The polyurethane resin constituting the surface layer has 100% modulus value of from 5 to 50 N / cm, and the surface layer has a degree of foaming of from 1.3 to 2.0 times.

Description

technical field [0001] The present invention relates to a synthetic leather which has natural leather-like touch and feel, and which is particularly suitable for use as a vehicle interior material, and a method for producing the same. Background technique [0002] So far, synthetic leather has been used as a substitute for natural leather or as a leather raw material having better physical properties than natural leather for vehicle interior materials. In order to obtain the touch and feel like natural leather, the synthetic leather is generally formed by laminating a polyurethane resin layer on a fibrous base material (such as non-woven fabric, woven fabric, braided fabric, etc.). [0003] As a synthetic leather having a natural leather-like touch and feel, for example, impregnating or coating a polyurethane resin on a fibrous base material, wet coagulating the polyurethane resin to form a wet microporous layer, and then forming a wet microporous layer on the wet microporou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14B32B27/12
CPCB32B27/12D06N3/0097D06N3/14B32B7/12D06N3/145B32B27/40B32B5/026B32B5/08B32B5/18B32B5/245B32B27/065B32B27/08B32B27/18B32B2262/02B32B2262/0276B32B2262/06B32B2262/08B32B2262/14B32B2266/0278B32B2307/50B32B2307/554B32B2605/003Y10T428/249985
Inventor 上村知行田所茂金子幸人
Owner HONDA MOTOR CO LTD