Manufacturing process of waterborne polyurethane resin

A water-based polyurethane and manufacturing process technology, applied in textiles and papermaking, can solve problems such as insufficient transparency, unnatural light feeling of finished leather, and health hazards of operators

Inactive Publication Date: 2020-10-23
安徽锐乐升新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditionally, polyurethane resins for synthetic leather are mostly oily. This kind of polyurethane resin needs to use organic solvents as the diffusion medium. There are toxic -NCO groups in the manufacturing process, which is easy to cause pollution to the environment and pose a hazard to the health of operators; In addition, the finished leather using oily polyurethane resin has defects such as unnatural light perception and insufficient transparency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of manufacture technique of waterborne polyurethane resin, comprises the following steps:

[0040] S1, select raw materials;

[0041] Select raw materials according to the following parts by weight, 40 parts of polytetramethylene ether glycol, 40 parts of polycarbon polyol, 100 parts of isophorone diisocyanate, 10 parts of diaminosulfonate, 3 parts of polyurethane environmental protection catalyst, deionized 200 parts of water, 15 parts of 1,4-butanediol, 10 parts of 2,2-dimethylolpropionic acid, 20 parts of butanone;

[0042] S2, performing a preliminary polymerization reaction on the raw material mixture;

[0043] First, first mix polytetramethylene ether glycol and polycarbonate polyol, and then fully mix and stir with other components;

[0044] Secondly, adding the stirred mixture into the reactor for heating to obtain the preliminary product;

[0045] Wherein, the heating temperature is 70°C, and the heating duration is 3h;

[0046] S3, performing a seco...

Embodiment 2

[0058] A kind of manufacture technique of waterborne polyurethane resin, comprises the following steps:

[0059] S1, select raw materials;

[0060] Select raw materials according to the following parts by weight, 60 parts of polytetramethylene ether glycol, 60 parts of polycarbon polyol, 120 parts of isophorone diisocyanate, 15 parts of diaminosulfonate, 5 parts of polyurethane environmental protection catalyst, deionized 300 parts of water, 20 parts of 1,4-butanediol, 15 parts of 2,2-dimethylolpropionic acid, 40 parts of butanone;

[0061] S2, performing a preliminary polymerization reaction on the raw material mixture;

[0062] First, first mix polytetramethylene ether glycol and polycarbonate polyol, and then fully mix and stir with other components;

[0063] Secondly, adding the stirred mixture into the reactor for heating to obtain the preliminary product;

[0064] Wherein, the heating temperature is 90°C, and the heating duration is 6h;

[0065] S3, performing a seco...

Embodiment 3

[0077] A kind of manufacture technique of waterborne polyurethane resin, comprises the following steps:

[0078] S1, select raw materials;

[0079] Select raw materials according to the following parts by weight, 40 parts of polytetramethylene ether glycol, 40 parts of polycarbon polyol, 100 parts of isophorone diisocyanate, 10 parts of diaminosulfonate, 3 parts of polyurethane environmental protection catalyst, deionized 200 parts of water, 15 parts of 1,4-butanediol, 10 parts of 2,2-dimethylolpropionic acid, 20 parts of butanone;

[0080] S2, performing a preliminary polymerization reaction on the raw material mixture;

[0081] First, first mix polytetramethylene ether glycol and polycarbonate polyol, and then fully mix and stir with other components;

[0082] Secondly, adding the stirred mixture into the reactor for heating to obtain the preliminary product;

[0083] Wherein, the heating temperature is 70°C, and the heating duration is 3h;

[0084] S3, performing a seco...

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PUM

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Abstract

The invention relates to the technical field of high-molecular polymers, in particular to a manufacturing process of waterborne polyurethane resin, which comprises the following steps of: S1, selecting a mixture of polytetramethylene ether glycol and polycarbon polyol, isophorone diisocyanate, diaminosulfonate, a catalyst, water, 1, 4-butanediol, 2, 2-dimethylolpropionic acid and a solvent in parts by weight; S2, mixing and stirring the raw materials, and heating the mixed raw materials; S3, adding one of ethylenediamine and isophorone diamine into the preliminary product, fully stirring, andcarrying out a second-stage heating reaction; S4, adding water into the product, and then heating the product for emulsifying; S5, carrying out heat preservation treatment on the product in a reactionkettle; and S6, vacuumizing the reaction kettle, and carrying out cooling and discharging to obtain the waterborne polyurethane resin. The manufacturing process is more environment-friendly, harm tohealth of operators is reduced, and after the waterborne polyurethane resin is applied to the synthetic leather, the surface of the synthetic leather is natural in light sensation, the synthetic leather is close to real leather in due physical property, and the waterproofness and air permeability are excellent.

Description

technical field [0001] The invention relates to the technical field of high molecular polymers, in particular to a manufacturing process of water-based polyurethane resin. Background technique [0002] Polyurethane refers to the abbreviation of high polymer polyurethane containing a large number of carbamate groups in the main chain. Because of its excellent physical and chemical properties, it has been widely used in the synthetic leather and artificial leather industries. It is a multifunctional polymer material. [0003] Traditionally, polyurethane resins for synthetic leather are mostly oily. This kind of polyurethane resin needs to use organic solvents as the diffusion medium. There are toxic -NCO groups in the manufacturing process, which is easy to cause pollution to the environment and pose a hazard to the health of operators; In addition, the finished leather using oily polyurethane resin has defects such as unnatural light perception and insufficient transparency....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/75C08G18/66C08G18/48C08G18/44C08G18/12D06N3/14
CPCC08G18/4854C08G18/44C08G18/4018C08G18/6692C08G18/755C08G18/12D06N3/148D06N3/146D06N2209/123D06N2209/142D06N2209/1692D06N2211/28C08G18/3228C08G18/3234
Inventor 施学义
Owner 安徽锐乐升新材料科技有限公司
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