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Preparation method of high-solid low-viscosity polyester modified water-soluble acrylic resin

A technology of water-soluble acrylic acid and sticky polyester, applied in the field of polymer materials, can solve the problems of low solid content, single structure, and restrictions on the popularization and application of water-soluble acrylic acid, and achieve the effect of high solid content and low viscosity

Inactive Publication Date: 2020-08-18
YICHENG BARRIER ZHANGJIAGANG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the water-soluble acrylic acid on the market has a single structure and simple process, resulting in low solid content (generally below 70%) and high viscosity (generally above 10,000CPS / 25°C), which not only leads to poor environmental protection, but also because of too high The high viscosity brings a series of defects such as poor construction and poor surface leveling, which seriously limits the further popularization and application of water-soluble acrylic acid

Method used

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  • Preparation method of high-solid low-viscosity polyester modified water-soluble acrylic resin
  • Preparation method of high-solid low-viscosity polyester modified water-soluble acrylic resin
  • Preparation method of high-solid low-viscosity polyester modified water-soluble acrylic resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1) Cosolvent ethylene glycol butyl ether-A (accounting for 18 parts in the total amount of ethylene glycol butyl ether) and 1,3 butanediol, valerolactone, neopentyl glycol, maleic anhydride, 1, the adduct of 4 cyclohexane dimethanol and dimethylol propionic acid, Mn is that the small molecule polyester polymer of 800-850 is put into the reactor;

[0036] 2) Pour into nitrogen to keep the final pressure in the reactor at 2Kg; heat up to 160°C;

[0037] 3) Mix acrylic acid, hydroxyethyl acrylate, adamantyl methacrylate, styrene, and butyl acrylate evenly, record it as material A, and set aside;

[0038] 4) Mix the remaining 2 parts of ethylene glycol butyl ether-B with tert-butyl peroxide 3,5,5-trimethylhexanoate evenly, record it as material B, and set aside;

[0039] 5) At 160°C, add material A dropwise, after the addition of material A is completed, add material B dropwise after 15 minutes, and keep the dropping time at 5 hours;

[0040] 6) After the dropwise additio...

Embodiment 2

[0044] The implementation steps are shown in Example 1, wherein the small molecule polyester intermediate is changed to 1,3-butanediol, caprolactone, neopentyl glycol, maleic anhydride, 1,4-cyclohexanedimethanol and Trimellitic anhydride adduct, small molecule polyester polymer with Mn of 700-750.

Embodiment 3

[0046] 1) 18 parts in the total amount of co-solvent ethylene glycol butyl ether-A and 1,3-butanediol, valerolactone, neopentyl glycol, maleic anhydride, 1,4-cyclohexane The adduct of dimethanol and dimethylolpropionic acid, Mn is that the small molecule polyester polymer of 800-850 is dropped into reactor;

[0047] 2) rush into nitrogen, keep the final pressure in the reactor at 4Kg;

[0048] 3) heating up to 160°C;

[0049] 4) Mix acrylic acid, hydroxyethyl acrylate, adamantyl methacrylate, styrene, and butyl acrylate evenly, record it as material A, and set aside;

[0050] 5) Mix the remaining 2 parts of ethylene glycol butyl ether-B with tert-butyl peroxide 3,5,5-trimethylhexanoate evenly, and record it as material B for later use;

[0051] 6) At 160°C, add material A dropwise, after the addition of material A is completed, add material B dropwise after 15 minutes, and keep the dropping time at 5 hours;

[0052] 7) After the dropwise addition of material B is completed,...

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Abstract

The invention discloses a preparation method of high-solid low-viscosity polyester modified water-soluble acrylic resin. The preparation method comprises the following steps of: adding a cosolvent ethylene glycol butyl ether and a micromolecular polyester intermediate into a reactor; introducing nitrogen, and keeping the final pressure in the reactor at 2-4 Kg; raising the temperature; uniformly mixing acrylic acid, hydroxyethyl acrylate, adamantyl methacrylate, styrene and butyl acrylate, and recording a mixture as a material A; uniformly mixing the ethylene glycol butyl ether with tert-butylperoxy-3, 5, 5-trimethylhexanoate, and recording a mixture as a material B; dropwise adding the material A and the material B into the reactor; and after the dropwise adding, keeping the temperatureuntil an acid value is qualified, performing cooling and discharging. The micromolecular polyester is adopted to improve the solid content of the system and reduce the viscosity, and meanwhile, the adamantyl methacrylate is adopted to improve the hardness of the material, so that the obtained water-soluble acrylic acid has the characteristics of high solid content and low viscosity, and also has relatively high hardness and flexibility.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a preparation method of high-solid and low-viscosity polyester-modified acrylic resin. Background technique [0002] In recent years, with the increasingly stringent environmental protection regulations and the improvement of consumption levels, the rapid development of water-based resins for coatings has been promoted. Generally, water-based resins can be divided into three categories: 1. Water-soluble, 2. Water-dispersible, and 3. Emulsion type; water-soluble acrylic resin coatings have many advantages such as high gloss and fullness, good weather resistance, etc., and retain solvent-based acrylic resin coatings. The advantages in mechanical properties, protective properties and decorative properties have been widely used in metal finishing paints, such as electric vehicles, metal packaging materials, security doors and other fields. [0003] The preparation of water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08F220/18C08F220/20C08F212/08C08F220/06C08G63/60C08G63/553
CPCC08F283/01C08G63/60C08G63/553C08F220/1804C08F220/20C08F212/08C08F220/1811C08F220/06
Inventor 仝伟吕孝辉许锋姜炜顾海峰陈忠良
Owner YICHENG BARRIER ZHANGJIAGANG TECH CO LTD
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