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Preparation method of soft and air-ventilating waterborne polyurethane clothes leather base

A water-based polyurethane, garment leather bass technology, applied in polyurea/polyurethane coatings, coatings, textiles and papermaking, etc., can solve the problem of not being able to achieve soft, moisture-permeable and breathable leather feel, ecological and environmental protection, and achieve excellent breathability and moisture permeability. , The effect of strong dermis feeling, uniform and stable pores

Active Publication Date: 2018-11-06
LANZHOU SCISKY AQUEOUS POLYMER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a soft and breathable water-based polyurethane garment leather method, which is used to solve the problem that the traditional manufacturing process on the garment leather base in the prior art cannot achieve softness and moisture permeability Breathable, genuine leather feel, and ecological environmental protection issues, the method of the soft and breathable water-based polyurethane garment leather bass proposed by the present invention is to use water-based polyurethane resin as raw material, without adding any organic solvent, and the wet process makes the first layer of water-based polyurethane coating The layer of cells is uniform and stable, plus the second layer of cells obtained after washing PVA with hot water, the double-layer cells make the garment leather base structure fine and tight, with moisture absorption and perspiration and good air permeability

Method used

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  • Preparation method of soft and air-ventilating waterborne polyurethane clothes leather base
  • Preparation method of soft and air-ventilating waterborne polyurethane clothes leather base

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for soft breathable water-based polyurethane garment leather bass, comprising the following steps:

[0026] (1) PVA aqueous solution configuration:

[0027] Weigh 15 parts of PVA solid and 100 parts of tap water, dissolve the PVA solid to obtain the PVA aqueous solution;

[0028] (2) Configure water-based polyurethane foam slurry:

[0029] The foaming slurry is composed of the following raw materials and their parts by weight: 300 parts of KT702F anionic waterborne polyurethane resin with a solid content of 35%, 2.5 parts of A168 powder wetting agent, 30 parts of PVA aqueous solution, and 25 parts of 400 mesh lignocellulose , Silicone modified K12 foaming agent 4.5 parts, 208 silicone resin polyether emulsion foam stabilizer 4.5 parts, crosslinking agent 1.5 parts, water-based thickener 0.5 parts;

[0030] (3) Configure pre-coagulation liquid

[0031] Pre-coagulation liquid raw materials and their composition by weight: 1 part of demulsification cross-linkin...

Embodiment 2

[0044] A method for soft breathable water-based polyurethane garment leather bass, comprising the following steps:

[0045] (1) PVA aqueous solution configuration:

[0046] Weigh 18 parts of PVA solid and 100 parts of tap water, dissolve the PVA solid to obtain the PVA aqueous solution;

[0047] (2) Configure water-based polyurethane foam slurry:

[0048] The foaming slurry is composed of the following raw materials and their parts by weight: KT702F anionic waterborne polyurethane resin 310 with a solid content of 40, 2.8 parts of A168 powder wetting agent, 40 parts of PVA aqueous solution, 28 parts of 600 mesh lignocellulose, organic silicon 5 parts of modified K12 foaming agent, 5 parts of 208 silicone polyether emulsion foam stabilizer, 1.8 parts of crosslinking agent, 1 part of water-based thickener;

[0049] (3) Configure pre-coagulation liquid

[0050] Pre-coagulation liquid raw materials and their composition by weight: 2 parts of demulsification cross-linking agent,...

Embodiment 3

[0062] A method for soft breathable water-based polyurethane garment leather bass, comprising the following steps:

[0063] (1) PVA aqueous solution configuration:

[0064] Weigh 20 parts of PVA solid and 100 parts of tap water, and dissolve the PVA solid to obtain the PVA aqueous solution;

[0065] (2) Configure water-based polyurethane foam slurry:

[0066] The foaming slurry is composed of the following raw materials and their parts by weight: 300 parts of KT705 anionic waterborne polyurethane resin with a solid content of 45%, 3 parts of A168 powder wetting agent, 45 parts of PVA aqueous solution, 30 parts of 1000 quality cellulose, and 30 parts of organic silicon 6 parts of modified K12 foaming agent, 6 parts of 208 silicone resin polyether emulsion foam stabilizer, 2 parts of crosslinking agent, 2 parts of water-based thickener;

[0067] (3) Configure pre-coagulation liquid

[0068] Pre-coagulation liquid raw materials and their composition by weight: 3 parts of demul...

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Abstract

The invention provides a preparation method of a soft and air-ventilating waterborne polyurethane clothes leather base. The preparation method comprises the following steps of preparing a PVA (polyvinyl alcohol) water solution, preparing a waterborne foaming slurry, treating a base cloth, coating, coagulating, washing and drying. The preparation method of the soft and air-ventilating waterborne polyurethane clothes leather base has the advantages that the waterborne polyurethane foaming holes and the PVA water solution are changed from the liquid state into the solid state in the shaping process, then the PVA is cleaned by hot water, and the foam holes are obtained; by adopting the physical double-layer foaming type, the foam holes are uniform and stable, so that the good air ventilating and moisture permeating properties of the clothes leather base are realized, the hand feel is soft, and the feel of real leather is strong; the requirements of synthetic leather market on the clothes leather base can be met.

Description

technical field [0001] The invention belongs to the technical field of water-based polyurethane synthetic leather, in particular to a method for preparing a soft and breathable water-based polyurethane garment leather base. Background technique [0002] At present, synthetic leather has been used in various fields in people's lives, and there are various varieties. Apparel leather is a kind of synthetic leather product, which is made of solvent-based polyurethane. DMF (dimethylformamide) in solvent-based polyurethane is replaced with water by wet process, so that the coating has continuous pores, so as to achieve moisture permeability. Temperament. It has the characteristics of light weight, wear resistance, heat resistance, toughness, good cold resistance and high tensile strength. However, a large amount of DMF, solvent-based additives and colorants are used in the coating slurry, which not only endangers the health of consumers, but also seriously damages the ecological...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00C09D175/04C09D129/04C09D197/02
CPCC08L2205/03C09D175/04D06N3/005D06N3/0061D06N3/142D06N3/144D06N2209/123D06N2209/126D06N2211/28C08L29/04C08L97/02
Inventor 戴家兵王永乐李维虎祝彬陈磊唐朋朋魏念旺
Owner LANZHOU SCISKY AQUEOUS POLYMER MATERIAL CO LTD
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