Aqueous polyurethane resin for super black and misty surface processing agent and preparation method thereof

A water-based polyurethane and surface treatment technology, applied in fiber processing, textiles and papermaking, etc., can solve the problems of inability to achieve non-toxic and non-polluting, and the synthetic leather is difficult to have a special black and special fog effect. Good alcohol resistance and the effect of improving water and alcohol resistance

Inactive Publication Date: 2019-06-18
HEFEI KETIAN WATERBORNE TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, as a new style, the special black special fog is gradually favored by consumers, but the surface treatment agent of the special black special fog on the market is mainly oleoresin, which cannot be non-toxic and pollution-free. At the same time, the existing surface treatment agent It is difficult for the treated synthetic leather to form an excellent black and fog effect

Method used

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  • Aqueous polyurethane resin for super black and misty surface processing agent and preparation method thereof
  • Aqueous polyurethane resin for super black and misty surface processing agent and preparation method thereof
  • Aqueous polyurethane resin for super black and misty surface processing agent and preparation method thereof

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preparation example Construction

[0030] The preparation method of the water-based polyurethane resin for the special black surface treatment agent also includes the step (2) of adjusting the temperature to 30-40° C., adding the organic silicon modifier, and mixing and reacting for 0.5-1 hour.

[0031]In step (2), after the system has reacted for 6 to 8 hours, under the condition of 30 to 40 ° C, an organosilicon modifier is added to the system. The low surface energy of the silane coupling agent can endow the material with good hydrolysis resistance. At the same time, the silane coupling agent forms a cross-linked structure after hydrolysis, which can endow the surface treatment agent with good scratch resistance.

[0032] The preparation method of the water-based polyurethane resin for Tehei special fog surface treatment agent also includes step (3) adjusting the temperature to 0-25°C, adding the neutralizing agent, reacting for 1-5 minutes, adding emulsified water under high-speed stirring, so that After be...

Embodiment 1

[0037] 1. Preparation of waterborne polyurethane resin

[0038] 1) 50g of polypropylene oxide diol, 100g of polyisoprene adipate diol, 35g of IPDI, 15g of HMDI, 3g of DMPA, 0.4g of bismuth octoate and 5g of diluent acetone were mixed and reacted at 75°C for 7h;

[0039] 2) Adjust the temperature to 50°C, add 120g of diluent acetone and mix; add 1g of aminosilane coupling agent KH550, adjust the temperature to the required emulsification temperature of 10°C, add 2g of triethylamine for neutralization, and the neutralization time is 2min Then add 300g of emulsified water under high-speed stirring to make it dispersed into an emulsion state, then add 1g of ethylenediamine to react, and the reaction time is 1h;

[0040] 3) Distill under reduced pressure at 30°C and vacuum at -0.07MPa. After stirring for 2 hours, the test result shows that there is no acetone smell and odor, and the solid content of the test is up to the standard, that is, the diluent acetone is removed to obtain w...

Embodiment 2

[0042] 1. Preparation of waterborne polyurethane resin

[0043] 1) 170g of polyisoamyl adipate diol, 40g of HMDI, 5g of DMPA, 0.1g of zinc caprylate and 8g of diluent acetone were mixed and reacted at 75°C for 7h;

[0044] 2) Adjust the temperature to 10°C, add 0.5g of aminosilane coupling agent KH550, and mix for 0.5h;

[0045] 3) Adjust the temperature to 55°C, add 140g of diluent acetone and mix; adjust the temperature to the required emulsification temperature of 15°C, add 4g of triethylamine for neutralization, and add 400g of emulsified water under high-speed stirring after the neutralization time of 1min, so that After being dispersed into an emulsion state, 4g of hexamethylenediamine was added for reaction, and the reaction time was 0.6h;

[0046] 5) Distill under reduced pressure at 50°C and vacuum at -0.08MPa. After stirring for 3 hours, the test result shows that there is no acetone smell and odor, and the solid content of the test is up to standard, that is, the d...

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Abstract

The invention provides an aqueous polyurethane resin for a super black and misty surface processing agent and a preparation method thereof. The aqueous polyurethane resin comprises following components in parts by weight: 150 to 200 parts of macromolecular polyol, 30 to 40 parts of polyisocyanate, 3 to 5 parts of a hydrophilic chain extender, 0.1 to 0.5 part of a catalyst, 0.5 to 4 parts of an amino silane coupling agent, 2 to 5 parts of a neutralizing agent, 300 to 500 parts of emulsified water, and 1 to 5 parts of a rear chain extending reagent. A super black and misty surface processing agent prepared from the aqueous polyurethane resin prepared by the provided preparation method is environmentally friendly and has an excellent super black and misty processing effect.

Description

technical field [0001] The invention relates to the field of synthetic leather surface treatment agents, in particular to a water-based polyurethane resin for a special black special fog surface treatment agent and a preparation method thereof. Background technique [0002] At present, synthetic leather products are becoming more and more common, and have largely replaced natural leather with insufficient resources to make boxes, bags, shoes, car interiors and furniture decorations. With the improvement of people's living standards and the improvement of environmental protection requirements, synthetic leather products not only need excellent appearance and touch, but also need to be non-toxic and pollution-free. Higher requirements. Among them, as a new style, the special black special fog is gradually favored by consumers, but the surface treatment agent of the special black special fog on the market is mainly oleoresin, which cannot be non-toxic and pollution-free. At th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/34C08G18/12C08G18/28D06M15/572D06M15/568
Inventor 戴家兵赵学庭孙之龙冯林林朱保凌
Owner HEFEI KETIAN WATERBORNE TECH CO LTD
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