Production method of no-yellowing composite leather

A production method and technology for synthetic leather, applied in the field of leather making, can solve the problems that synthetic leather does not have NOX resistance, cannot be effectively treated for solvent volatilization, and has poor anti-oxidation effect, so as to improve anti-oxidation performance and increase printing processing. Process, the effect of avoiding yellowing

Inactive Publication Date: 2012-05-09
石狮龙祥制革有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing production method of this non-yellowing synthetic leather, the anti-yellowing treatment of synthetic leather is mainly to use non-yellowing resin for anti-ultraviolet treatment, synthetic leather does not have NOX resistance, the anti-oxidation effect is relatively poor, and yellowing will still occur. and the volatilization of solvents in production cannot be effectively dealt with, and the residual solvents will also affect the yellowing of synthetic leather to a certain extent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The production method of the non-yellowing synthetic leather of the present invention is realized through the following steps:

[0020] 1, raw material preparation: with the non-yellowing resin of 100 parts by weight, the DMF (dimethylformamide) of 40 parts by weight, the MEK (butanone) of 5 parts by weight, the TOL (toluene) of 5 parts by weight, the TOL (toluene) of 3 parts by weight Antioxidant auxiliary agent and appropriate amount of pigment are made into lining; With the hydrolysis-resistant base material of 100 weight parts, the DMF of 30 weight parts, the MEK of 10 weight parts, the TOL of 5 weight parts, the antioxidative auxiliary agent of 3 weight parts and Appropriate amount of coloring material is made into base material; suitable base material is selected, and wet semi-finished product BASE can be used here;

[0021] 2. Dry coating: According to the conventional dry coating method, the fabric is coated and scraped on the surface of the release paper, and t...

Embodiment 2

[0024] The production method of the non-yellowing synthetic leather of the present invention is realized through the following steps:

[0025] 1, raw material preparation: with the non-yellowing resin of 100 parts by weight, the DMF (dimethylformamide) of 35 parts by weight, the MEK (butanone) of 7 parts by weight, the TOL (toluene) of 7 parts by weight, the TOL (toluene) of 4 parts by weight Antioxidant auxiliary agent and appropriate colorant are made into lining; With the anti-oxidation auxiliary agent of 100 weight parts of hydrolysis-resistant primer, 27 weight parts of DMF, 11 weight parts of MEK, 6 weight parts of TOL, 4 weight parts of antioxidant auxiliary agent and Appropriate amount of coloring material is made into base material; suitable base material is selected, and wet semi-finished product BASE can be used here;

[0026] 2. Dry coating: According to the conventional dry coating method, the fabric is coated and scraped on the surface of the release paper, and t...

Embodiment 3

[0029] The production method of the non-yellowing synthetic leather of the present invention is realized through the following steps:

[0030] 1, raw material preparation: with the non-yellowing resin of 100 parts by weight, the DMF (dimethylformamide) of 45 parts by weight, the MEK (butanone) of 3 parts by weight, the TOL (toluene) of 3 parts by weight, the TOL (toluene) of 2 parts by weight Antioxidant auxiliary agent and appropriate amount of pigment are made into lining; With the hydrolysis-resistant bottom material of 100 weight parts, the DMF of 33 weight parts, the MEK of 9 weight parts, the TOL of 3 weight parts, the antioxidative auxiliary agent of 2 weight parts and Appropriate amount of coloring material is made into base material; suitable base material is selected, and wet semi-finished product BASE can be used here;

[0031] 2. Dry coating: According to the conventional dry coating method, the fabric is coated and scraped on the surface of the release paper, and ...

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PUM

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Abstract

The invention discloses a production method of no-yellowing composite leather, which is implemented by following scheme: preparing no-yellowing resin, DMF, MEK, TOL, antioxidant and pigment into plus materials; preparing hydrolysis resistant substrate, DMF, MEK, TOL, antioxidant and pigment into a substrate; selecting proper base materials; preparing the plus material, substrate and base materialat a temperature of 160 +-20 DEG according to common dry coating method to obtain composite containing the plus material layer, substrate layer and base material layer; external surface of the plus material layer of the composite leather is printed with NOX resistant auxiliaries, then proceeding NOX resistant treatment to obtain no-yellowing composite leather of the invention. The invention proceeds uvioresistant treatment to the no-yellowing resin in the plus material and the substrate, adding anti-oxidation additives in the plus material and the substrate to reduce dosage of TOL and MEK which are easily discolored in air by oxidation, and increas dosage of DMF to improve antioxygenic property of composite leather; improving temperature of oven in process of producing leather by dry coating method, solvent is volatilized completely, yellowing caused by solvent is avoided; adding a printing process to proceed NOX resistant treatment on surface of the composite leather, which can avoidyellowing caused by NOX oxidation in air effectively.

Description

technical field [0001] The invention relates to the field of leather making, in particular to a production method of non-yellowing synthetic leather. Background technique [0002] Ordinary white or light-colored synthetic leather products will produce yellowing in sunlight and air, and cannot maintain the original color, because synthetic leather products are irradiated by sunlight and ultraviolet rays and oxidized by NOX (nitrogen oxides) in the air. The anti-yellowing performance of synthetic leather has always been a technical problem that plagues the industry. [0003] The production method of existing non-yellowing synthetic leather generally comprises the steps: [0004] 1. Raw material preparation: use 100 parts by weight of non-yellowing resin, 30 parts by weight of DMF (dimethylformamide), 10 parts by weight of MEK (butanone), 5 parts by weight of TOL (toluene) and an appropriate amount of colorant Made into a fabric; use 100 parts by weight of a hydrolysis-resist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/18B32B27/06B32B27/12D06M13/402
Inventor 李成九
Owner 石狮龙祥制革有限公司
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