Polyarylsulfone modified polyurethane resin emulsion

A technology of polyurethane resin and polyarylsulfone, which is applied in the field of polyarylsulfone modified polyurethane resin emulsion, can solve the problems of low fullness, poor water resistance, poor solvent resistance, etc., and achieve good ethanol resistance, water resistance, The effect of high hardness

Inactive Publication Date: 2019-03-29
SHAOGUAN HEZHONG CHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the water-based wood coating products sold on the market have low hardness, low fullness, poor water resistance, and extremely poor solvent resistance after coating; at present, domestic wood varnishes generally use solvent-based polyurethane coatings, which have the appearance of fullness of the coating film. Good, high hardness, greatly improve the product grade, with strong decoration, the performance of water-based wood coatings is lower than that of solvent-based coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A polyarylsulfone modified polyurethane resin emulsion A, in parts by weight, whose preparation steps are as follows:

[0022] 1) Preparation of hydroxyl-terminated low-molecular-weight linear polyarylsulfone: Under the condition of nitrogen, add the following compounds in sequence after water removal in the reaction kettle equipped with a reflux water separation device: 150 parts of 1,6-dihydroxy Naphthalene, 145 parts of 4,4'-dichlorodiphenyl sulfone, 20 parts of dimethyl sulfoxide, 0.5 part of p-toluenesulfonic acid; then heat the reactor to 140°C and keep it warm for 3 hours, then use 5°C / h The heating rate was raised to 170°C, and then the temperature was kept at 170°C for 3 hours. During the whole reaction process, the water produced in the reaction process was removed through the water separator, and finally the solvent and impurities were removed by pressure distillation to obtain a viscous colorless transparent liquid. That is, low-molecular-weight linear polya...

Embodiment 2

[0026] A polyarylsulfone modified polyurethane resin emulsion B, in parts by weight, whose preparation steps are as follows:

[0027] 1) Preparation of hydroxyl-terminated low-molecular-weight linear polyarylsulfone: Under the condition of nitrogen, add the following compounds in sequence after dehydration into the reaction kettle equipped with a reflux water separation device: 120 parts of tetrabromobisphenol S, 130 parts of 4,4'-dichlorodiphenyl sulfone, 10 parts of cyclohexanone, 0.2 parts of p-toluenesulfonyl chloride; then heat the reactor to 150°C and keep it warm for 3 hours, then raise the temperature at a rate of 5°C / h to 175°C, and then keep warm at 175°C for 4 hours. During the whole reaction process, the water produced in the reaction process is removed through the water separator, and finally the solvent and impurities are removed by pressure distillation to obtain a viscous colorless and transparent liquid, which is hydroxyl End-capped low molecular weight linear...

Embodiment 3

[0031] A polyarylsulfone modified polyurethane resin emulsion C, in parts by weight, whose preparation steps are as follows:

[0032] 1) Preparation of hydroxyl-terminated low-molecular-weight linear polyarylsulfone: Under the condition of nitrogen, add the following compounds in sequence after water removal in the reaction kettle equipped with a reflux water separation device: 142 parts of 1,1'-linked -2-naphthol, 136 parts of 4,4'-dichlorodiphenyl sulfone, 15 parts of cyclopentanone, 0.3 part of iodine bromide; then heat the reaction kettle to 147°C and keep it warm for 3 hours, then use 5°C / h The heating rate was raised to 174°C, and then the temperature was kept at 174°C for 3.6 hours. During the whole reaction process, the water generated during the reaction was removed through the water separator, and finally the solvent and impurities were removed by pressure distillation to obtain a viscous colorless transparent liquid. , which is a hydroxyl-terminated low molecular we...

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PUM

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Abstract

The invention relates to a polyarylsulfone modified polyurethane resin emulsion. The hydroxy-terminated low molecular weight linear polyarylsulfone is first synthesized by stepwise polymerization, andthen the hydroxy-terminated low molecular weight linear polyarylsulfone is used as a polymer modifier to participate in the prepolymerization, chain extension and emulsification of the polyurethane.The molecular structure of the polyurethane resin of the invention contains a large amount of polyarylsulfone units, so the emulsion has the advantages of high hardness, good water resistance, good ethanol resistance and high temperature resistance.

Description

technical field [0001] The invention relates to a water-based resin, in particular to a polyarylsulfone modified polyurethane resin emulsion, which belongs to the technical field of environmental protection. Background technique [0002] Water-based paint is the mainstream direction of the world's paint development. Water-based coatings use water as a solvent or dispersion medium. In addition to the characteristics of general coatings, they also have the characteristics of non-toxic, odorless, and non-flammable. They meet environmental protection requirements and are more and more popular among users. The VOC content, benzene series and heavy metal content in water-based paint are much lower than that of oil-based paint. The brushing area is generally more than twice that of oil-based paint. It is easy to use and can be diluted with tap water. The construction tools and equipment are easy to clean and are green. Environmentally friendly products. [0003] At present, water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/12C08G18/66C08G18/64C08G18/42C08G18/44C08G18/34C08G18/32C09D175/04
CPCC08G18/12C08G18/348C08G18/4081C08G18/4238C08G18/4277C08G18/44C08G18/6453C08G18/6659C09D175/04C08G18/3206C08G18/3228
Inventor 谢义鹏康伦国姚东生
Owner SHAOGUAN HEZHONG CHEM CO LTD
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