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Polyester-modified waterborne phosphate-contained acrylic resin

An acrylic resin, polyester modification technology, applied in the direction of coating, can solve the problems of difficult adhesion of modified alloys, difficult adhesion of metal surface paint films, etc., and achieve the effects of rich colors, excellent wetting, dispersibility and adsorption.

Inactive Publication Date: 2015-12-02
顾彩霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the introduction of Si, Ni and other elements in the aluminum alloy modified by the alloy, the microphase separation between the metal grains is caused, which makes it difficult for the paint film to adhere to the metal surface.
Therefore, the adhesion of the coating on the modified alloy is a big problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: Preparation of polyester modified water-based phosphorus-containing acrylic resin

[0041] 150g ethylene glycol, 210g trimethylolpropane, 1000g neopentyl glycol, 590g 1,4-cyclohexanedicarboxylic acid, 560g isophthalic acid, 446g adipic acid and 174g fumaric acid, 2.5g stannous octoate , put into the reaction kettle that agitator, thermometer, rectifying column, condenser and nitrogen inlet are equipped with, reaction temperature is 230 ℃, pressure is 0.11MPa, rotating speed is 200rpm, control distillation head temperature not more than 105 ℃, stir 10 hours , adjust the pressure to -0.095MPa, the reaction temperature is 190°C, stir for 6 hours, take samples to measure the acid value and viscosity, the acid value test method is as follows: take 12 grams of resin in a conical flask, add 8g of ethylene glycol monobutyl ether, Shake the Erlenmeyer flask to dissolve the sample completely, add 3 drops of phenolphthalein indicator, and titrate with potassium hydro...

Embodiment 2

[0043] Embodiment 2: Preparation of polyester modified water-based phosphorus-containing acrylic resin

[0044] 100g propylene glycol, 200g trimethylolpropane, 950g neopentyl glycol, 240g 1,6-hexanediol, 290g terephthalic acid, 750g phthalic anhydride, 500g isophthalic acid, 180g fumaric acid, 3g Dibutyltin dilaurate is put into the reactor that agitator, thermometer, rectifying column, condenser and nitrogen inlet are equipped with, and reaction temperature is 250 ℃, and pressure is 0.11MPa, and rotating speed is 200rpm, and the control head temperature is not Over 105°C, stir for 10 hours, adjust the pressure to -0.095MPa, the reaction temperature is 190°C, stir for 5 hours, take samples to measure the acid value and viscosity, and the acid value is tested according to the method in Example 1. React until the acid value is 20mgKOH / g, lower the temperature to 120°C, add 1700g ethylene glycol monobutyl ether to adjust the solid content to 60±2%. (Expressed by iodine value, in...

Embodiment 3

[0046] Embodiment 3: Preparation of polyester modified water-based phosphorous-containing acrylic resin

[0047] 220g 2-methyl-1,3 propanediol, 150g trimethylolpropane, 800g neopentyl glycol, 450g 1,4-cyclohexane dimethanol, 770g phthalic anhydride, 300g sebacic acid, 550g isophthalic acid Formic acid, 130g maleic anhydride, 8g monobutyltin oxide, put into the reactor that agitator, thermometer, rectifying column, condenser and nitrogen inlet are equipped with, reaction temperature is 260 ℃, and pressure is 0.12MPa, rotating speed It is 200rpm, the temperature of the control head is not more than 105°C, stir for 6 hours, adjust the pressure to -0.095MPa, the reaction temperature is 190°C, stir for 3 hours, take a sample to measure the acid value and viscosity, and the acid value is tested according to the method of Example 1. React until the acid value is 30mgKOH / g, lower the temperature to 120°C, add 1780g ethylene glycol monobutyl ether to adjust the solid content to 60±2%. ...

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Abstract

The invention belongs to the technical field of polyester-modified acrylic resin and particularly relates to polyester-modified waterborne phosphate-contained acrylic resin and a preparing method and application thereof. The resin is obtained by enabling 5-10 parts of unsaturated polyester, 50-70 parts of acrylate monomers, 15-25 parts of hydroxyl-contained acrylate monomers, 5-7 parts of carboxyl-contained monomers, 1-5 parts of phosphate-contained acrylate monomers, 1-3 parts of initiators and 55-75 parts of cosolvent by mass to react. According to the resin, unsaturated polyester chain segments and phosphate-contained acrylate monomer chain segments with ester formed in a hydroxyacid condensation mode as main chains are introduced, and adhesive force of resin emulsion paint and a metal base material, especially the stainless steel base material made of aluminum alloys such as Ni-Al, Mg-Si-Al and Mg-Al is greatly increased; meanwhile, the resin has better adsorbability and acting force on pigment filler such as carbon black, titanium dioxide and aluminum powder, the wettability is more excellent, and the resin can be applied to priming paint of a metal coating to prepare a colorful coating.

Description

technical field [0001] The invention belongs to the technical field of polyester-modified acrylic resins, and in particular relates to polyester-modified water-based phosphorous-containing acrylic resins and a preparation method and application thereof. Background technique [0002] With the development of the construction industry, the building materials suitable for door and window decoration have become more diversified, including natural materials (wooden structures), metal materials, polymer synthetic materials (engineering plastics polyamide, polyphenylene sulfide, etc.), etc. Wooden structures are easy to rot, and their durability is not high; polymer synthetic materials have creep behavior, and after long-term use, the materials will shrink or expand, which limits their widespread use. Due to the advantages of high mechanical strength, high temperature resistance, and strong texture, metal materials have been used more and more. However, metals have poor environment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08F220/06C08F220/28C08F220/18C08F220/14C08F230/02C08F222/02C08F220/32C09D151/08
Inventor 顾彩霞
Owner 顾彩霞