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Water-dispersible light stabilizer and preparation method thereof

A light stabilizer and dispersibility technology, which is applied in the field of water-based environmental protection product additives, can solve the problems of poor weather resistance of water-based coatings, limit the application of water-based products, and low light stabilizer content, and achieve easy dispersion into water and good water resistance. Chemical effect and good compatibility

Inactive Publication Date: 2017-07-28
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, water-based products also have their own limitations. The weather resistance of water-based coatings is not good, and additives such as light stabilizers need to be added to improve the weather resistance of the coatings.
The existing light stabilizers are basically oily products, which are not compatible with water or even insoluble in water, which greatly limits the application of water-based products, so it is necessary to develop a water-dispersible light stabilizer
[0004] At present, there are problems such as relatively low light stabilizer content and poor economic benefits in the application of light stabilizers in water-based products.

Method used

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  • Water-dispersible light stabilizer and preparation method thereof
  • Water-dispersible light stabilizer and preparation method thereof
  • Water-dispersible light stabilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method of water dispersible light stabilizer, comprising the following steps:

[0036] (1) Get 20 mass parts of acetone, 10 mass parts of propylene glycol butyl ether and 3 mass parts of azobisisobutyronitrile in a 150mL four-necked flask, put 10 mass parts of acrylic acid, 10 mass parts of butyl acrylate , 24 parts by mass of methyl methacrylate, 10 parts by mass of epoxy resin E51 and 1 part by mass of azobisisobutyronitrile were added to the dropping funnel, and then the temperature was raised to 80°C, and started under stirring at 190r / min Add the liquid in the dropping funnel dropwise, and finish adding dropwise in 2 hours to obtain a water-based resin prepolymer;

[0037] (2) Take 25 parts by mass of water-based resin prepolymer, 1 part by mass of triethylamine, 60 parts by mass of light stabilizer bis(1-octyloxy-2,2,6,6-tetramethyl-4 -piperidinyl) sebacate, 0.1 parts by mass of alkylphenol polyoxyethylene ether, 0.1 parts by mass of sodium dodecylb...

Embodiment 2

[0041] A preparation method of water dispersible light stabilizer, comprising the following steps:

[0042] (1) Get 30 mass parts of propylene glycol methyl ether and 2 mass parts of azobisisobutyronitrile in a 150mL four-necked flask, put 6 mass parts of acrylic acid, 24 mass parts of butyl acrylate, and 10 mass parts of formaldehyde Add methyl acrylate, 10 parts by mass of epoxy resin E20 and 1 part by mass of azobisisobutyronitrile into the dropping funnel, then raise the temperature to 85°C, and start dropping into the dropping funnel under stirring at 130r / min The liquid, 2h is added dropwise, and the aqueous resin prepolymer is obtained;

[0043] (2) Get 35 parts by mass of water-based resin prepolymer, ethylenediamine of 5 parts by mass, light stabilizer 2-cyano-3, ethyl diphenylacrylate of 50 parts by mass, 0.1 part by mass of ten Sodium dialkylbenzenesulfonate and 15 parts by mass of water were stirred for 25 minutes at 25° C. and a rotation speed of 150 r / min to pre...

Embodiment 3

[0046] A preparation method of water dispersible light stabilizer, comprising the following steps:

[0047] (1) Get 50 parts by mass of diphenylmethane diisocyanate, 20 parts by mass of polyether diol (molecular weight 800), 20 parts by mass of N-methylpyrrolidone, 5 parts by mass of 2,2-dimethylol propionic acid and Heat 0.2 parts by mass of N,N-dimethylcyclohexylamine in a 150mL four-necked flask with good airtightness to 50°C, and keep it warm for 3h under the stirring condition of 180r / min to prepare the water-based resin prepolymerized thing;

[0048] (2) Take 30 parts by mass of water-based resin prepolymer, 3 parts by mass of triethylamine, and 68 parts by mass of light stabilizer bis(1-octyloxy-2,2,6,6-tetramethyl-4 -piperidinyl) sebacate, 2 mass parts of hydroxymethyl cellulose, 2 mass parts of polyethylene glycol and 0.1 mass parts of water, stirred at 150°C and 100r / min for 45min to prepare Water dispersible light stabilizer.

[0049] The various performance test...

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Abstract

The invention discloses a water-dispersible light stabilizer and a preparation method thereof. According to the preparation method, monomers, solvents, catalysts, additives and neutralizers firstly react for 2-8h under the rotating speed of 80-300r / min at the temperature ranging from 50 DEG C to 150 DEG C to prepare waterborne resin pre-polymers, the prepared waterborne resin pre-polymers, light stabilizers, additives and water are uniformly stirred and mixed at the temperature ranging from 20 DEG C to 120 DEG C to prepare water-dispersible light stabilizer, the percentage of the weight of the light stabilizer to total weight is 50%-90%, samples are hermetically placed into a baking oven with the temperature ranging from 50 DEG C to 70 DEG C to store for 4-8 weeks in an accelerated manner and cannot layer, and the samples are dispersed into water to obtain milk-white uniform stable dispersion liquid. The preparation method is simple and easy to control, and the prepared samples are good in stability, wide in application range and easily dispersed into the water and have quite important values in application of waterborne product additives.

Description

technical field [0001] The invention relates to a composite polymer resin, in particular to a water-dispersible light stabilizer for water-based products and a preparation method thereof; it belongs to the technical field of additives for water-based environmental protection products. Background technique [0002] With the enhancement of people's awareness of environmental protection, the development of water-based environmental protection coatings, water-based inks and other water-based products has received more and more attention. Water-based products have the characteristics of low VOC and environmental protection; using water as a solvent saves a lot of organic solvent resources. [0003] However, water-based products also have their own limitations. The weather resistance of water-based coatings is not good, and additives such as light stabilizers need to be added to improve the weather resistance of the coatings. The existing light stabilizers are basically oil-based...

Claims

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Application Information

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IPC IPC(8): C08L51/08C08L75/08C08L1/28C08L75/06C08L71/02C08K5/3435C08K5/17C08K5/42C08K5/315C08F283/10C08F220/06C08F220/18C08F220/14C08F220/28C08G18/48C08G18/76C08G18/66C08G18/42C08G18/75C08G18/73
CPCC08F283/10C08G18/42C08G18/4825C08G18/6659C08G18/6692C08G18/73C08G18/755C08G18/7671C08K5/17C08K5/315C08K5/42C08L51/08C08L75/06C08L75/08C08L2201/08C08L2205/03C08L71/02C08K5/3435C08L1/284C08K3/22C08F220/281C08F220/1804
Inventor 文秀芳周成龙皮丕辉徐守萍程江
Owner SOUTH CHINA UNIV OF TECH
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