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Waterborne polyurethane resin for sofa leather, preparation method and application of waterborne polyurethane resin

A technology of water-based polyurethane and sofa leather, which is applied in textiles and papermaking, etc., can solve the problems of poor flexibility and wear resistance of sofa leather, consume manpower and material resources, and cumbersome operation, so as to meet environmental protection requirements, improve hydrophilicity, meet The effect of using performance requirements

Inactive Publication Date: 2018-12-07
HEFEI KETIAN WATERBORNE TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are technical limitations in the existing water-based polyurethane resins, which cause the sofa leathers to still have problems such as poor flexibility and wear resistance. long, consumes a lot of manpower and material resources

Method used

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  • Waterborne polyurethane resin for sofa leather, preparation method and application of waterborne polyurethane resin
  • Waterborne polyurethane resin for sofa leather, preparation method and application of waterborne polyurethane resin
  • Waterborne polyurethane resin for sofa leather, preparation method and application of waterborne polyurethane resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1. Preparation of waterborne polyurethane resin

[0050] 1) 150g of polycarbonate diol, 35g of TDI, 4g of DMPA, 0.3g of bismuth octoate and 5g of diluent acetone were stirred and reacted at 60°C for 7h, and the stirring speed was 600r / min;

[0051] 2) Adjust the temperature to 50°C, add 1g of KH550, continue to stir for 0.5h, and keep the stirring speed at 600 rpm;

[0052] 3) Adjust the temperature to 50°C, add 120g of diluent acetone and mix, adjust the temperature to the required emulsification temperature of 5°C, add 3g of triethylamine for neutralization, increase the stirring speed to 1100r / min, and continue to mix after 2 minutes of neutralization time Add 320g of emulsified water under high-speed stirring to make it dispersed into an emulsion state, then add 2g of ethylenediamine to react, and the reaction time is 1h;

[0053]4) Distill under reduced pressure at 30°C and vacuum-0.07MPa, after stirring for 2 hours, the stirring speed is 300r / min, the content of ...

Embodiment 2

[0061] 1. Preparation of waterborne polyurethane resin

[0062] 1) 150g of polycaprolactone diol, 40g of IPDI, 4g of DMPA, 0.3g of zinc octanoate and 8g of diluent acetone were stirred and reacted at 65°C for 7h, and the stirring speed was 600r / min;

[0063] 2) Adjust the temperature to 50°C, add 1.5g of KH550, continue to stir and react for 0.5h, and keep the stirring speed at 600r / min;

[0064] 3) Adjust the temperature to 50°C, add 120g of diluent acetone and mix, adjust the temperature to the required emulsification temperature of 15°C, add 3g of triethylamine for neutralization, increase the stirring speed to 1200r / min, and continue to mix after 2 minutes of neutralization time Add 328g of emulsified water under high-speed stirring to make it dispersed into an emulsion state, then add 2g of hexamethylenediamine to react, and the reaction time is 1h;

[0065] 4) Distill under reduced pressure at 50°C and vacuum-0.08MPa, after stirring for 3 hours, the stirring speed is 50...

Embodiment 3

[0073] 1. Preparation of waterborne polyurethane resin

[0074] 1) 150g of polycarbonate diol, 38kg of NDI, 4g of DMPA, 0.3g of bismuth octoate, and 10g of diluent butanone were mixed and reacted at 70°C for 7 hours, and the stirring speed was 800r / min;

[0075] 2) Adjust the temperature to 50°C, add 2g of aminosilane coupling agent Si-602, continue to stir and react for 0.5h, and keep the stirring speed at 800r / min;

[0076] 3) Adjust the temperature to 50°C, add diluent butanone 150g and mix; adjust the temperature to the required emulsification temperature of 25°C, add 3g of triethylamine for neutralization, increase the stirring speed to 1200r / min, and continue after 2 minutes of neutralization time Add 325g of emulsified water under high-speed stirring to make it dispersed into an emulsion state, then add 2g of o-xylylenediamine to react, and the reaction time is 1h;

[0077] 4) Under reduced pressure distillation at 60°C and vacuum-0.09MPa, after stirring for 4 hours, t...

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Abstract

The invention provides waterborne polyurethane resin for sofa leather, and a preparation method and application of the waterborne polyurethane resin. The waterborne polyurethane resin comprises the following raw material components in parts by weight: 150-200 parts of macromolecular polyol, 30-45 parts of polyisocyanate, 3-5 parts of hydrophilic chain extender, 0.1-0.5 part of catalyst, 0.5-4 parts of organic silicon modifier, 2-5 parts of neutralizer, 300-400 parts of emulsification water, and 1-5 parts of post chain extender. The waterborne polyurethane resin prepared by the preparation method disclosed by the invention is friendly to environment and non-toxic, and can meet environmental protection requirements; furthermore, the prepared resin can fully satisfy use performance requirements of sofa leather, and has good flexibility and wear resistance; and at the same time, a one-step feeding method is adopted in the resin synthesis process, and human and material costs are greatly saved.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a water-based polyurethane resin for sofa leather, a preparation method and an application thereof. Background technique [0002] Sofa leather requires soft hand feeling, good flexibility and excellent wear resistance. In addition to the base fabric and fabric layer used for sofa leather meeting the requirements, the bottom material must also meet the above requirements. A hard base material will cause sofa leather to feel poor, stiff, and poor in comfort. As an adhesive, on the one hand, it needs to have a high curing bonding strength and a peeling strength that meets the requirements to ensure that it will not delaminate during long-term wear. On the other hand, it is required that its modulus is low or its molecular polarity is small, so that it can meet the requirement of flexibility. The low molecular polarity is contradictory to its high peel strength. At present, solvent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/75C08G18/66C08G18/44C08G18/42C08G18/34C08G18/12C08G18/32D06N3/14
CPCC08G18/12C08G18/34C08G18/4277C08G18/44C08G18/6659C08G18/755C08G18/758C08G18/7614C08G18/7678D06N3/146D06N3/147D06N2211/28C08G18/3228C08G18/3234C08G18/324
Inventor 戴家兵赵学庭李维虎何羽鸿
Owner HEFEI KETIAN WATERBORNE TECH CO LTD
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