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A kind of low-gloss body matting water-based polyurethane resin and preparation method thereof

A water-based polyurethane, matting technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of synthetic leather matte surface treatment agent easy to drop powder, hand feeling additives easy to precipitate, poor leveling, etc., to achieve Save manpower and equipment costs, improve storage stability, and facilitate operation

Active Publication Date: 2021-10-15
JIAXING HEXIN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a low-gloss body matting water-based polyurethane resin and its preparation method, so as to improve the existing synthetic leather matte surface treatment agent, which is easy to lose powder, whiten, poor leveling, heavy hand marks, and hand feeling. Problems such as easy precipitation of additives

Method used

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  • A kind of low-gloss body matting water-based polyurethane resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A low-gloss body matting water-based polyurethane resin, made of the following raw materials in parts by weight: 30-70 parts of polymerized polyol, 5-15 parts of self-made sulfonate-type polymerized polyol, 0-10 parts of polyether modified silicone oil 2-8 parts of hydrophilic chain extender, 15-45 parts of isocyanate, 1-5 parts of crosslinking agent, 1-5 parts of diol chain extender, and 2-8 parts of diamine chain extender.

[0044] Preferably, the low-gloss body matting water-based polyurethane resin is made of the following raw materials in parts by weight: 45-65 parts of polymerized polyol, 7-12 parts of self-made sulfonate-type polymerized polyol, 5 parts of polyether-modified silicone oil ~8 parts, 3-5 parts of hydrophilic chain extender, 25-35 parts of isocyanate, 1-3 parts of crosslinking agent, 3-5 parts of diol chain extender, and 2-6 parts of diamine chain extender.

[0045]Preferably, the polymer polyol is polyester type polyethylene adipate diol (PEA), poly...

Embodiment 2

[0068] Add 28 parts of PNA 2000, 14 parts of PTMG 1000, 5 parts of self-made sulfonate polymer polyol, 3 parts of polyether modified silicone oil 1000, 7 parts of PEG 1000, and 3 parts of MPEG 750 into a four-necked flask for 110~ Dehydration under reduced pressure at 120°C for 1 hour; then lower the temperature to about 70°C, add 32 parts of IPDI, then raise the temperature to 85-90°C, add a small amount of organic bismuth catalyst and keep it at this temperature for 2 hours to measure the NCO content; after the NCO content reaches the standard, Cool down to about 50°C, add 2 parts of neopentyl glycol and 1.5 parts of TMP, keep warm at 75-80°C, and measure the NCO content; after the NCO content reaches the standard, add acetone to dilute and reduce the viscosity. IPDA (diluted in acetone first), emulsified and dispersed with deionized water under a high-speed shearing machine, and after it is completely dispersed, add 3 parts of IPDA (diluted in water first) dropwise for post-...

Embodiment 3

[0071] Add 14 parts of PCD2000, 14 parts of PTMG1000, 5 parts of self-made sulfonate polymer polyol, 5 parts of polyether modified silicone oil 2000, and 6 parts of YmerN120 into a four-necked flask for dehydration under reduced pressure at 110-120°C for 1 hour; then lower the temperature to At about 70°C, add 25 parts of IPDI and 10 parts of HDI, then raise the temperature to 80-90°C, add a small amount of organic bismuth catalyst and keep it warm at this temperature for 2 hours to measure the NCO content; after the NCO content reaches the standard, cool down to about 50°C, Add 2 parts of BDO and 1 part of TMP, keep warm at 75-80°C, and measure the NCO content; after the NCO content reaches the standard, add acetone to dilute and reduce the viscosity, and at the same time cool down to below 50°C, add 1 part of IPDA dropwise (dilute in acetone first) , emulsify and disperse with deionized water under a high-speed shearing machine, and after it is completely dispersed, add 2.5 p...

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Abstract

The invention discloses a low-gloss body matte type water-based polyurethane resin, which is prepared from the following raw materials by weight: 30-70 parts of polymer polyol, 5-15 parts of self-made sulfonate type polymer polyol, polyether modified 0-10 parts of silicone oil, 2-8 parts of hydrophilic chain extender, 15-45 parts of isocyanate, 1-5 parts of cross-linking agent, 1-5 parts of diol chain extender, 2-8 parts of diamine chain extender. The invention adopts the self-made sulfonate type polymeric polyol, and applies it in the preparation process of the bulk extinction type waterborne polyurethane resin, and by introducing the polyether modified silicone oil into the structure, it cooperates with other components to play the role of With good synergy, a bulk matte waterborne polyurethane resin with low gloss is prepared; it also has good leveling, smoothness, wear resistance and scratch resistance, and there is no precipitation, powder drop, whitening and Heavy hand marks and other problems; storage stability has also been significantly improved.

Description

technical field [0001] The invention relates to the field of water-based matting treatment agent for synthetic leather, in particular to the application and matte treatment of the surface of synthetic leather, specifically, to a low-gloss body matting water-based polyurethane resin, and at the same time, the invention also relates to the use of the resin Preparation. Background technique [0002] Synthetic leather has been widely used in all aspects of people's daily life. In order to make synthetic leather products have a variety of surface styles to meet people's many needs, the surface treatment of synthetic leather has become the most common processing method. [0003] Matte effect is a common requirement for synthetic leather surface treatment. The most common method is to add matting powder and other powder fillers into the water-based polyurethane resin and stir evenly. During the treatment, a layer of microscopic unevenness is formed on the surface of the synthetic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/40C08G18/42C08G18/44C08G18/48C08G18/12C08G18/32C09D175/04
CPCC08G18/12C08G18/4018C08G18/4202C08G18/4238C08G18/4241C08G18/44C08G18/4854C08G18/6611C09D175/04C08G18/3206C08G18/6674
Inventor 王伟纪尚超石磊俞建峰陈海龙李寿伟倪俊俊王洁
Owner JIAXING HEXIN CHEM IND
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