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Aqueous acrylic modified epoxy ester primer-topcoat integrated anticorrosive baking finish

A water-based acrylic and epoxy ester technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems of long drying time, achieve the effect of reducing construction technology, reducing energy consumption, and simple and quick operation

Inactive Publication Date: 2010-10-20
HUNAN XIANGJIANG PAINT GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A water-based acrylic modified alkyd amino baking varnish introduced by the Ocean Chemical Research Institute (CN1405254A). The drying condition is 120×30min. The coating film has strong mechanical properties and a hardness of 2H, but it is only used as a primer. The drying time slightly longer

Method used

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  • Aqueous acrylic modified epoxy ester primer-topcoat integrated anticorrosive baking finish

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: the synthetic method of waterborne acrylic acid modified epoxy ester resin

[0031] (1) Add 650g of linoleic acid, 300g of oleic acid, and 240.5g of E-12 epoxy resin into the reaction flask. Stir and heat up to 150~190°C, and add 140g of pentaerythritol, 185g of trimethylolpropane, 280g of isophthalic acid, and 1.5g of ester catalyst lead oxide in sequence. The temperature was raised to 220° C., and the acid value was brought to 20 mgKOH / g. Cool down to 150°C, add 110g of phthalic anhydride, raise the temperature to 210°C, keep the reaction until the acid value is 20mgKOH / g, cool down, dilute with 450g of xylene for storage, and prepare epoxy ester prepolymer.

[0032] (2) Take 615g of the above-mentioned epoxy ester prepolymer and add it to the reaction bottle 2, mix 300g of styrene, 130g of butyl acrylate, 70g of acrylic acid, and 20g of benzoyl peroxide (BPO) evenly, and after the BPO is completely dissolved, Adopt dripping method to feed, drip in 3 ...

Embodiment 2

[0035] (1) Add 135g of deionized water, 3g of dispersant BYK-P105, 4g of wetting agent BYK-341, 2.7g of defoamer EFKA-2550 into the dispersing kettle, and stir evenly with an adjustable high-speed disperser.

[0036] (2) Add 250g of water-based acrylic-modified epoxy ester resin and 40g of methanol-etherified melamine amino resin in the formulation amount, and stir evenly at a speed of 400-500rpm.

[0037] (3) Add 30g of titanium dioxide, 6g of phthalocyanine blue, 6g of high-pigment carbon black, 88.5g of superfine barium sulfate, 22.5g of strontium chrome yellow, and 132g of medium chrome yellow, stir evenly, and keep for 1-2 hours to obtain a slurry.

[0038] (4) Grind the above slurry through a grinder until the fineness is ≤35um to obtain a color paste.

[0039](5) Transfer the above color paste to the batching container, then add 250g water-based acrylic modified epoxy ester resin, 2g leveling agent EFKA-3580, 20g drier zinc naphthenate, 2g preservative ActicideTHP, 2g a...

Embodiment 3

[0043] (1) Add 130g of deionized water, 3g of dispersant BYK-P105, 4g of wetting agent Tego-245, and 2.7g of defoamer EFKA-2550 into the dispersion kettle, and stir evenly with an adjustable high-speed disperser.

[0044] (2) Add 250g of water-based acrylic modified epoxy ester resin and 40g of isobutanol-etherified melamine formal amino resin, and stir evenly at a speed of 400-500rpm.

[0045] (3) Add 15g of titanium dioxide, 147g of iron red, 78g of zinc phosphate, 3g of superfine barium sulfate, and 2g of strontium chrome yellow, stir evenly, and keep for 1-2 hours to obtain a slurry.

[0046] (4) Grind the above slurry through a grinder until the fineness is ≤35um to obtain a color paste.

[0047] (5) Transfer the above color paste to the batching container, then add 250g water-based acrylic modified epoxy ester resin, 2g leveling agent EFKA-3580, 20g drier cobalt isooctanoate, 2g preservative ActicideTHP, 2g antifungal agent SKANEM8 Stir well with 1.3g defoamer EFKA-...

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Abstract

The invention discloses aqueous acrylic modified epoxy ester primer-topcoat integrated anticorrosive baking finish. The baking finish consists of the following components in part by weight: 45 to 65 parts of aqueous acrylic modified epoxy ester resin, 2 to 20 parts of amino resin, 5 to 35 parts of pigment, 0 to 15 parts of filler, 1 to 3 parts of water dispersible dryer, 0.1 to 0.55 part of pH regulator, 5 to 15 parts of softened water, 0.2 to 0.4 part of dispersant, 0.3 to 0.5 part of wetting agent, 0.15 to 0.25 part of flatting agent, 0.3 to 0.5 part of antifoaming agent, and 0.2 to 0.3 part of preservative and mildew preventive. Without organic solvent, the baking finish is safe, energy-saving and free from pollution; the pencil hardness reaches 2H, the coating performance is stable, the film-coating mechanical strength is high, the positive and negative impact resistance can reach 5Kg.cm, and the flexibility can reach 1mm; the baking finish can integrate antirust and anticorrosive functions, can be used as primer or topcoat, reduces the construction process, is simple and quick to operate, can be sprayed or dip-coated, and can be quickly cured; a coated film does not become yellow; and the baking finish meets the development direction of aqueous anticorrosive paint.

Description

technical field [0001] The invention belongs to the technical field of coatings, and is especially suitable for a water-based acrylic modified epoxy ester bottom-surface integrated anti-corrosion baking paint for protection and decoration of traffic vehicles, engineering machinery, household appliances and steel furniture manufacturing industries. Background technique [0002] Most of the existing domestic water-based anti-corrosion coatings are still divided into two types: primer and topcoat, which should be used separately when painting. In this way, it is necessary to consider whether the primer and topcoat can be used together, and whether they can be combined during the film forming process. , thus bringing certain troubles to the construction. In order to reduce the construction process and reduce the construction cost, in recent years, the research on water-based anti-corrosion coatings has been concentrated on the water-based anti-corrosion coating with rust on the ...

Claims

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Application Information

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IPC IPC(8): C09D151/08C09D161/20C09D7/12C09D5/08
Inventor 刘寿兵闵长春廖阳飞
Owner HUNAN XIANGJIANG PAINT GRP
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