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AOE intermediate, hydroxy acrylic resin containing AOE intermediate and preparation method of hydroxy acrylic resin

A technology of hydroxyacrylic acid and methacrylic acid, applied in the field of coatings, can solve the problems of not meeting environmental protection requirements, high solvent content, low solid content, etc., and achieves the effect of protecting light stability, strong anti-ultraviolet ability, and satisfying environmental protection

Pending Publication Date: 2021-06-08
CHONGQING SANXIA PAINTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to solve the problem that the existing acrylic polyurethane coating has a low solid content and a large solvent content which results in more VOCs and does not meet the requirements of environmental protection, and provides an AOE intermediate , Hydroxy acrylic resin containing the AOE intermediate and preparation method thereof

Method used

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  • AOE intermediate, hydroxy acrylic resin containing AOE intermediate and preparation method of hydroxy acrylic resin
  • AOE intermediate, hydroxy acrylic resin containing AOE intermediate and preparation method of hydroxy acrylic resin
  • AOE intermediate, hydroxy acrylic resin containing AOE intermediate and preparation method of hydroxy acrylic resin

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Take glycidyl tert-carbonate 530kg, organotin catalyst stannous octoate 350g, antioxidant tris(2,4-di-isobutylphenol) phosphite 3kg and triphenyl phosphite 700g, join in the reactor, Introduce nitrogen protection and heat up. When the temperature rises to 90°C, add 160kg of methacrylic acid and 70g of hydroquinone dropwise, and control the dropping temperature between 80°C and 100°C in 25 to 40 minutes, then keep the temperature at 90°C to 100°C for 2 hours After the determination of the acid value ≤ 15mgKOH / g, the temperature is lowered, and the nitrogen gas is sealed for standby to prepare the AOE intermediate. The schematic diagram of the chemical reaction for the preparation of AOE intermediates is shown in figure 1 shown.

[0051] 2. Preparation of hydroxyacrylic resin

Embodiment 2

[0053] A preparation method of hydroxyacrylic resin, comprising the following steps:

[0054]S11, AOE intermediate 155kg, β-hydroxypropyl acrylate (HPA) 95kg, tert-butyl methacrylate (TBMA) 80kg, n-butyl acrylate (BMA) 60kg, methyl methacrylate (MMA) 90kg, styrene (St) 170kg of each monomer is metered into the batching tank and mixed uniformly to form a mixture. 1 / 10 of the mixture is put into the reactor, and then 50kg of xylene, 5kg of benzophenone ultraviolet light absorber, and dimethacrylic acid are added. 7 kg of ethylene glycol ester (EGDMA-DMM) and 1.4 kg of 1 / 5 di-tert-amyl peroxide (BTA) were stirred and heated up under nitrogen protection.

[0055] S12. Control the temperature rise at 130-140°C and add 5.6 kg of the remaining 9 / 10 mixture and the remaining 4 / 5 of di-tert-amyl peroxide (BTA) and stir evenly. The adding time is controlled at 4.5-5.0 hours. Add the dodecyl mercaptan chain transfer agent and butyl acetate dropwise at the same time to adjust the reactio...

Embodiment 3 and 4

[0059] In Examples 3 and 4, the proportioning ratio of the hydroxyacrylic resin is shown in Table 1, and the preparation method is the same as in Example 2.

[0060] The composition and proportioning of table 1 embodiment 2-4 and commercially available resin

[0061] Raw material / Example (kg) Example 2 Example 3 Example 4 Market Resin 1 Market Resin 2 acrylic acid － － － 20 8 Glycidyl tertiary carbonate － － － 50 － AOE intermediate 156 156 156 － － β-hydroxypropyl acrylate 95 95 95 150 140 Benzophenone (ultraviolet light absorber) 6 － － － 0 Benzotriazole (ultraviolet light absorber) － 5 5 － 0 tert-butyl methacrylate 80 － 40 － 0 Methyl methacrylate 90 90 90 200 120 Butyl acrylate － － － － 40 cyclohexyl methacrylate － 80 40 － － n-Butyl methacrylate 60 60 60 150 130 Ethylene glycol dimethacrylate 7 7 7 － 0 Styrene) 170 170 170 110 160 ...

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Abstract

The invention discloses an AOE intermediate, hydroxy acrylic resin containing the AOE intermediate and a preparation method of the hydroxy acrylic resin. The structural formula of the AOE intermediate is shown in the specification, R1 is methyl, wherein R2 and R3 are C9-C11 alkanes. The invention also discloses a method for preparing hydroxy acrylic resin by combining the AOE intermediate with special monomers, namely tert-butyl methacrylate, cyclohexyl methacrylate and ethylene glycol dimethacrylate, and adding an ultraviolet light absorber under the initiation of di-tert-amyl peroxide. The hydroxy acrylic resin prepared by the invention has the characteristics of low viscosity and high solid content, and can greatly reduce the generation of harmful VOC (Volatile Organic Compounds), thereby reducing greater harm to employees in the production and construction processes, and meeting the requirements of environmental protection.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an AOE intermediate, a hydroxyacrylic resin containing the AOE intermediate and a preparation method thereof. Background technique [0002] Acrylic polyurethane coating is an anti-rust functional material prepared from acrylic polyurethane. It combines the advantages of coal tar pitch and epoxy resin. It is resistant to acid, alkali, water, solvent, oil, adhesion, color retention, heat Coating with good stability and electrical insulation. Because it does not contain organic solvents, and does not add anti-corrosion pigments with high heavy metal content such as mercury and lead, it is a green and pollution-free coating, and it is also the main development direction of the world's coatings. The application fields of acrylic polyurethane coatings include docks, ports, oil production platforms, metal structures under mines, oil tanks of oil tankers, buried pipelines, etc. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/14C08F220/20C08F220/18C08F220/28C09D175/04
CPCC08F212/08C08F220/14C09D175/04C08F220/283C08F220/20C08F220/1804C08F220/1806
Inventor 孟海涛廖锦袁非汤青松饶亮
Owner CHONGQING SANXIA PAINTS CO LTD
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