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Waterborne high-transparency polyurethane dye resin for synthetic leather and preparation method of waterborne high-transparency polyurethane dye resin

A dye resin and synthetic leather technology, which is applied in the field of synthetic leather water-based high-transparency polyurethane dye resin and its preparation, can solve the problems of uneven color of the upper and lower layers of the surface layer slurry, easy production accidents, and obvious color difference, etc., to achieve Excellent abnormal low temperature folding resistance, avoid color migration and floating, and be conducive to the effect of environmental protection transformation

Active Publication Date: 2020-04-28
SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the current water-based synthetic leather industry, water-based colorants are generally used as colorants. The commonly used water-based colorants are inorganic powders, and the compatibility with water-based polyurethane resins is not good enough, resulting in floating colors, which will lead to surface damage. The color of the upper and lower layers of the slurry layer is not uniform, and the color difference after synthetic leather is obvious, which is prone to production accidents

Method used

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  • Waterborne high-transparency polyurethane dye resin for synthetic leather and preparation method of waterborne high-transparency polyurethane dye resin
  • Waterborne high-transparency polyurethane dye resin for synthetic leather and preparation method of waterborne high-transparency polyurethane dye resin

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Experimental program
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Effect test

Embodiment 1

[0061] The raw materials used in this embodiment and their weight are shown in Table 1.

[0062] Table 1

[0063] raw material name Mass (unit: gram) Polycarbonate diol (number average molecular weight 2000) 120 Poly(hexanediol adipate) diol (number average molecular weight 2000) 60 Coloring polyol Red x64 (number average molecular weight 600) red 30 Dicyclohexylmethane diisocyanate 120 1,6-diisocyanate 20 DMPA 18 Hexylene glycol 15 Catalyst BICAT ® 8 0.2 acetone 270 Triethylamine 13.56 Ethylenediamine 4.2 water 750

[0064] The preparation steps of the synthetic leather water-based high transparency polyurethane dye resin of the present embodiment are as follows:

[0065] 1) Put 120g of polycarbonate diol, 60g of polyhexamethylene adipate diol, and 30g of colored polyol into the reaction kettle, and stir at 50°C for 20 minutes until the mixture is uniform;

[0066]2) Put 120g of dicyclohex...

Embodiment 2

[0069] The raw materials used in this embodiment and their weight are shown in Table 2.

[0070] Table 2

[0071] raw material name Mass (unit: gram) Polycarbonate diol (number average molecular weight 2000) 120 Polytetrahydrofuran diol (number average molecular weight 2000) 60 Colored polyol (number average molecular weight 560) blue 30 Isophorone diisocyanate 100 1,6-diisocyanate 20 DMPA 18 Hexylene glycol 15 Catalyst BICAT® 8 0.2 acetone 270 Triethylamine 13.56 Ethylenediamine 5.0 water 710

[0072] The preparation steps of the synthetic leather water-based high transparency polyurethane dye resin of the present embodiment are as follows:

[0073] 1) Put 120g of polycarbonate diol, 60g of polytetrahydrofuran diol, and 30g of colored polyol into the reaction kettle, and stir at 50°C for 20 minutes until the mixture is uniform;

[0074] 2) Put 100g of isophorone diisocyanate and 20g of 1,6...

Embodiment 3

[0077] The raw materials used in this embodiment and their weight are shown in Table 3.

[0078] table 3

[0079] raw material name Mass (unit: gram) Polycarbonate diol (number average molecular weight 2000) 120 Polycaprolactone diol (number average molecular weight 2000) 60 Colored polyol (number average molecular weight 500) yellow 30 Antioxidant 1010 2 Dicyclohexylmethane diisocyanate 100 1,6-diisocyanate 20 DMPA 10 Hexylene glycol 15 Catalyst BICAT® 3184 0.2 Triethylamine 7.54 Sodium ethylenediaminoethanesulfonate 50% aqueous solution (A-95) 10 acetone 340 Ethylenediamine 5.11 water 695

[0080] The preparation steps of the synthetic leather water-based high transparency polyurethane dye resin of the present embodiment are as follows:

[0081] 1) Put 120g of polycarbonate diol, 60g of polyhexamethylene adipate diol, 30g of colored polyol, and 2g of antioxidant 1010 into the r...

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Abstract

The invention discloses waterborne high-transparency polyurethane dye resin for synthetic leather and a preparation method of the waterborne high-transparency polyurethane dye resin. The waterborne high-transparency polyurethane dye resin for synthetic leather is prepared from the following components in percentage by mass: 6 to 15% of polyester polyol, 0-7% of polyether polyol, 1.5-3.5% of coloring polyol, 7-10% of diisocyanate, 0.5-2% of a hydrophilic chain extender, 1-2% of a small molecular chain extender, 0.5-1.5% of a neutralizer, 0.01-0.02% of a catalyst, 15-25% of an acetone diluent, 0.2-0.5% of small molecular diamine and 45-55% of water. The waterborne high-transparency polyurethane dye resin for synthetic leather prepared by the invention avoids the problem of color migration and flooding of the resin while realizing resin coloring, has excellent normal and low temperature folding resistance, does not discharge a solvent in the film forming process, and is environment-friendly and energy-saving.

Description

technical field [0001] The invention relates to a water-based high-transparency polyurethane dye resin for synthetic leather and a preparation method thereof. Background technique [0002] With the development of social economy, while consumers are pursuing product quality, their awareness of environmental protection is also increasing. The synthetic leather industry consumes a large amount of organic solvents and other harmful substances, and the pollution to the environment is becoming more and more serious. Therefore, relevant technical personnel have invested a lot of energy to develop future-oriented environmentally friendly synthetic leather technology, and water-based polyurethane synthetic leather technology is one of them. [0003] In the current water-based synthetic leather industry, water-based colorants are generally used as colorants. The commonly used water-based colorants are inorganic powders, and the compatibility with water-based polyurethane resins is no...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/44C08G18/42C08G18/34C08G18/32C08G18/48C08G18/40C08L75/06C08L75/08C08J5/18
CPCC08G18/664C08G18/6659C08G18/6651C08G18/6607C08G18/6618C08G18/6625C08G18/44C08G18/4238C08G18/348C08G18/3206C08G18/3228C08G18/4854C08G18/4277C08G18/4825C08G18/4018C08G18/40C08J5/18C08J2375/06C08J2375/08
Inventor 赵波峰蒋红梅宋海峰阮华伟唐劲松
Owner SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD
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