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Slurry of waterborne polyurethane for synthetic leather produced by the replacing wet method and application method thereof

A water-based polyurethane and slurry technology, applied in the field of synthetic leather, can solve the problems of physical injury to production workers, harm to health, and large toxic and side effects, and achieve the effects of significant social and economic benefits, good effects, and low production costs.

Inactive Publication Date: 2010-06-30
温州市寰宇高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These solvents have high toxic and side effects, which not only cause environmental pollution, but also cause great harm to production workers and endanger their health. They are also flammable and explosive, and can easily cause fires and other safety production accidents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The solid content is 35%, the modulus is 80kg / cm 2 90 parts by weight of water-based polyurethane, while stirring, sequentially add 8 parts by weight of kaolin and 5 parts by weight of pulp powder into a plastic bucket, and stir at high speed for 15 minutes to fully disperse the kaolin and pulp powder in the water-based polyurethane. Add 6 parts by weight of a foam stabilizer, stabilize the foam for 15 minutes, then add 0.2 parts by weight of a crosslinking agent and stir evenly. Then add 2 parts by weight of a thickener to adjust the viscosity to 4000 cps, and the appearance is light yellow emulsion.

[0023] The stirrer used in this embodiment is a stainless steel stirrer. The stirring in this embodiment is carried out at normal temperature and normal pressure.

Embodiment 2

[0025] The solid content is 35%, the modulus is 200kg / cm 2 120 parts by weight of water-based polyurethane, under the condition of stirring, add 12 parts by weight of kaolin and 5 parts by weight of pulp powder in turn in the polished stainless steel bucket, and stir at high speed for 30 minutes to fully disperse the kaolin and pulp powder in the water-based polyurethane. Add 6 parts by weight of a foam stabilizer, stabilize the foam for 10 minutes, then add 0.4 parts by weight of a crosslinking agent and stir evenly. Then add 3.5 parts by weight of a thickener to adjust the viscosity to 5500 cps, and the appearance is light yellow emulsion.

[0026] The stirrer used in this embodiment is a stainless steel stirrer. The stirring in this embodiment is carried out at normal temperature and normal pressure.

Embodiment 3

[0028] The solid content is 30%, the modulus is 30kg / cm 2 100 parts by weight of water-based polyurethane, under the condition of stirring, add 10 parts by weight of kaolin and 6 parts by weight of pulp powder in turn in the polished stainless steel bucket, and stir at high speed for 20 minutes to fully disperse the kaolin and pulp powder in the water-based polyurethane. Add 7 parts by weight of a foam stabilizer, stabilize the foam for 20 minutes, then add 0.3 parts by weight of a crosslinking agent and stir evenly. Then add 3 parts by weight of a thickener to adjust the viscosity to 4500 cps, and the appearance is light yellow emulsion.

[0029] The stirrer used in this embodiment is a stainless steel stirrer. The stirring in this embodiment is carried out at normal temperature and normal pressure.

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PUM

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Abstract

The invention provides a slurry of waterborne polyurethane for synthetic leather produced by the replacing wet method, and provides a preparation method for the slurry. The slurry has low cost, good effect, safety, environmental protection, no toxic and side effects. The invention also provides the preparation method for using the slurry of water-borne polyurethane to produce synthetic leather by the replace the wet method and a prepared synthetic leather bass product. The preparation method for producing synthetic leather by the replace the wet method is simple and reliable, has no hazardous and noxious gas emission in the manufacturing process, and can realize clean production and safety production. The synthetic leather base prepared by the waterborne polyurethane has high property of simulating the derma and good ventilation property, has no toxic and residue odor, fully corresponds to relevant national standards, and has low cost and strong market competitiveness.

Description

technical field [0001] The present invention relates to the field of synthetic leather, in particular to a water-based polyurethane slurry used to replace wet-process production of synthetic leather, a preparation method thereof, a preparation method for wet-process production of synthetic leather using the water-based polyurethane slurry of the present invention, and the obtained Synthetic leather bass products. Background technique [0002] PU synthetic leather was produced in the late 1970s and developed in the 1990s. In the traditional production of PU synthetic leather, PU resins with organic solvents are used as the base layer and surface layer of leather products. This type of PU resins are all based on toluene, xylene, acetone, methyl ethyl ketone (MEK), acetic acid Ethyl ester and dimethylformamide (DMF) etc. are used as the main solvents to be prepared by polymerization. These solvents have high toxic and side effects, which not only cause environmental pollutio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K13/02C08K3/34C08J3/02D06M15/564D06N3/14
Inventor 郭琦潘方鸣
Owner 温州市寰宇高分子材料有限公司
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