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Polyurethane-based hihg-molecular UV absorber

A technology of ultraviolet rays and absorbents, applied in coatings, chemical change-inhibiting compositions, organic chemistry, etc., can solve problems such as poor hydrophilicity, poor fastness, and short service life, and achieve good surface adhesion , Improving the light fastness and excellent washing resistance

Inactive Publication Date: 2018-01-05
EVERLIGHT CHEMICAL INDUSTRIAL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, various materials have been applied to increase the light fastness of products, such as zinc oxide (ZnO) and titanium dioxide (TiO 2 ) solutions, benzotriazole derivatives, benzophenone derivatives, etc. However, some materials are only suitable for specific types of fibers and dyes due to poor hydrophilicity; Poor fastness; some materials also have disadvantages such as poor adhesion fastness and water resistance; and some materials need to be accompanied by a large amount of organic solvents or surfactants when used, so they are extremely inconsistent with environmental protection requirements
In particular, the UV resistance effect of the current light fastness improver after washing is greatly reduced, so the washing resistance is poor and the service life is short

Method used

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  • Polyurethane-based hihg-molecular UV absorber
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  • Polyurethane-based hihg-molecular UV absorber

Examples

Experimental program
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preparation example Construction

[0023] The detailed preparation method is described in the following examples, and the method similar to the examples can also be used to prepare the polyurethane polymer ultraviolet absorber. The preparation method (for example: synthesis method, reaction conditions, sequence, etc.) and materials used of the polyurethane-based polymer ultraviolet absorber of the present invention are not limited to those mentioned herein.

[0024] The polyurethane polymer ultraviolet absorber of the invention has excellent water dispersibility, permeability, storage stability, etc., and has a wide range of applications. The polyurethane polymer UV absorber of the present invention is suitable for various substrates, such as but not limited to: fiber materials, leather materials (eg, natural leather, synthetic leather), foamed cotton, wood, and the like. In particular, it is suitable for fibrous materials, including: natural fibers (such as vegetable fibers, animal fibers (such as wool) and mi...

Embodiment 1

[0027] [Example 1] Preparation of Compound 1

[0028] Take 68.2g of α-[3-[3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxyphenyl]-1-one Propyl]-ω-hydroxypoly(keto-1,2-ethanediyl)(α-[3-[3-(2H-Benzotriazol-2-yl)-5-(1,1-dimethylethyl)- 4-hydroxyphenyl]-1-oxop ropyl]-ω-hydroxypoly(oxo-1,2-ethanediyl), Taiwan Yongguang Chemical Industry Co., Ltd.) into the reaction bottle, add 50.5g HDI TRIMER, heat up to 65 ~ 75 ° C, After the titration NCO functional group molar number reaches the reaction end point (at this moment, Free NCO%=7%), add 5.4g DMBA, then react to after the titration NCO functional group molar number reaches the reaction end point (at this moment, Free NCO%=7%) 3.99%), 16.0 g of acetone and 5.4 g of N,N-dimethylethylamine (N,N-Dimethylethylamine) were added to prepare prepolymer 1.

[0029] Add prepolymer 1 to 300.0g deionized water, and disperse it with a mixer at high speed. After all the addition, add 2.8g EDA and 1.6g AEEA as a chain extender, and stir u...

Embodiment 2

[0030] [Example 2] Preparation of compound 2

[0031] Take 70.0g of α-[3-[3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxyphenyl]-1-one Propyl]-ω-hydroxypoly(keto-1,2-ethanediyl)(α-[3-[3-(2H-Benzotriazol-2-yl)-5-(1,1-dimethylethyl)- 4-hydroxyphenyl]-1-oxop ropyl]-ω-hydroxypoly(oxo-1,2-ethanediyl), Taiwan Yongguang Chemical Industry Co., Ltd.) into the reaction bottle, add 50.5g HDI TRIMER, heat up to 65 ~ 75 ° C, After titration NCO reactive functional group molar number reaches reaction end point (at this moment, Free NCO%=6.6%), add 2.2g DMBA, 10.5g PEG300 (polyethylene glycol (Polyethylene Glycol), Mw=300), react again to After titrating the molar number of NCO functional groups to reach the end of the reaction (at this time, Free NCO%=2.8%), add 16.0g of acetone and 2.6g of N,N-dimethylisopropylamine (N,N-Dimethylisopropylamine) to prepare the pre- Polymer 2.

[0032] Add prepolymer 2 to 300.0g deionized water, and disperse it with a mixer at high speed. After a...

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Abstract

The invention relates to a polyurethane-based high-molecular absorber, a polymer of which is obtained by reacting a UV absorber having a reactive hydrogen with a polyisocyanate and a diol or polyol.The weight average molecular weight of the polyurethane-based high-molecular UV absorber is in a range of 10,000 to 200,000.

Description

technical field [0001] The invention relates to a polyurethane polymer ultraviolet absorber, in particular to a polyurethane polymer ultraviolet absorber which can improve the light fastness and has washing resistance. Background technique [0002] Generally speaking, the dyeing and finishing process can be roughly divided into pre-dyeing treatment, printing and dyeing process and post-dyeing treatment. More specifically, pre-dyeing treatments such as: Singeing, desizing, Scouring, Bleaching, Mercerizing, heat setting, printing and dyeing processes such as dyeing, printing, And post-dyeing treatments such as finishing. The purpose of pre-dyeing treatment is to remove natural impurities on the yarn or fabric, as well as size, auxiliaries and contaminants from the textile process, so as not to affect the subsequent printing and dyeing operations. The post-dyeing treatment is to increase the usability or special properties of the fabric (such as: improve color fastness, impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/34C08G18/32C08G18/10C08G18/12C08G18/64
CPCC08G18/0814C08G18/0823C08G18/10C08G18/2875C08G18/3228C08G18/3271C08G18/3275C08G18/348C08G18/4833C08G18/6688C08G18/6692C08G18/7831C08G18/792C08G18/8048C08G18/807C09K15/30D06M15/564D06M2200/25D06N3/0059D06N3/14D06N2203/068D06N2209/1678C08G18/08C08G18/089C08K5/005C08K5/132C08K5/20C08K5/3475C07D403/14C08G18/0809C08G18/12C08G18/3851C08G18/48C08G18/73
Inventor 卢梅婷杨蕙祯潘垣宾柯子衡周德纲赖宝昆
Owner EVERLIGHT CHEMICAL INDUSTRIAL CORPORATION
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