Modified alkyd finish paint capable of being thickly coated and preparation method thereof

A modified and alkyd technology, used in coatings, polyester coatings, etc., can solve the problem of thick coating, improve flexibility, save time and labor costs, and improve coating efficiency.

Pending Publication Date: 2022-01-04
陕西宝塔山油漆股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can increase the thickness of the coating, but it can only be used as a primer coating; the alkyd primer is filled with a large amount of fillers, so that the thickness of the paint film is significantly improved to achieve a thick coating effect. At present, most alkyd primers in China are This effect can be achieved, but the shortcoming that the alkyd resin topcoat cannot be applied thickly has not been solved

Method used

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  • Modified alkyd finish paint capable of being thickly coated and preparation method thereof
  • Modified alkyd finish paint capable of being thickly coated and preparation method thereof
  • Modified alkyd finish paint capable of being thickly coated and preparation method thereof

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preparation example Construction

[0036] The preparation method of the thick coating modified alkyd topcoat provided by the invention may further comprise the steps:

[0037] 1) Prepare modified alkyd resin:

[0038] Add 16-20% soyoleic acid, 8-12% benzoic acid, 12-15% pentaerythritol, 16-19% phthalic anhydride and 3% reflux xylene into the reaction kettle, start stirring and cooling water, and heat up to 200-210°C , heat preservation and reflux dehydration for 2 hours, continue to heat up to 220-230 ° C, heat preservation and reflux until the acid value and viscosity are qualified, then cool down, add 37-40% xylene and dilute to obtain the modified alkyd resin.

[0039] 2) Preparation of phenolic resin liquid:

[0040] Measure 15-20% xylene, 15-20% toluene, 5-10% propylene glycol methyl ether acetate and 50-60% phenolic resin into the kettle, start stirring, heat up to 70-80°C for 3 hours, until fully dissolved, Take a sample to check that there is no particulate matter, and filter the discharge to obtain t...

Embodiment 1

[0049] 1) Prepare modified alkyd resin:

[0050] Add 16% soyoleic acid, 12% benzoic acid, 15% pentaerythritol, 17% phthalic anhydride and 3% reflux xylene into the reaction kettle, start stirring and cooling water, heat up to 200°C, heat preservation and reflux dehydration for 2 hours, and continue to heat up to 230°C , heat preservation and reflux until the acid value and viscosity are qualified, then lower the temperature, add 37% xylene and dilute to obtain the modified alkyd resin.

[0051] 2) Preparation of phenolic resin liquid:

[0052] Measure 18% xylene, 17% toluene, 5% propylene glycol methyl ether acetate and 60% phenolic resin into the kettle, start stirring, raise the temperature to 70°C and keep it for 3 hours, until it is fully dissolved, take a sample to check that there are no particles, and filter out the product. The phenolic resin liquid.

[0053] 3) Preparation of polyvinyl butyral liquid:

[0054] Measure 32% ethanol, 58% propylene glycol methyl ether ac...

Embodiment 2

[0059] 1) Prepare modified alkyd resin:

[0060] Add 18% soyoleic acid, 8% benzoic acid, 15% pentaerythritol, 16% phthalic anhydride and 3% reflux xylene into the reaction kettle, start stirring and cooling water, heat up to 210°C, heat preservation and reflux dehydration for 2 hours, and continue to heat up to 220°C , heat preservation and reflux until the acid value and viscosity are qualified, then lower the temperature, add 40% xylene and dilute to obtain the modified alkyd resin.

[0061] 2) Preparation of phenolic resin liquid:

[0062] Measure 15% xylene, 20% toluene, 5% propylene glycol methyl ether acetate and 60% phenolic resin into the kettle, start stirring, raise the temperature to 80°C and keep it for 3 hours until it is fully dissolved, take a sample to check that there are no particles, and filter out the product. The phenolic resin liquid.

[0063] 3) Preparation of polyvinyl butyral liquid:

[0064] Measure 25% ethanol, 65% propylene glycol methyl ether ac...

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Abstract

The invention discloses a modified alkyd finish paint capable of being thickly coated and a preparation method thereof, and the thick-coating modified alkyd finish paint comprises 35-45% of modified alkyd resin, 8-12% of phenolic resin liquid, 3-6% of polyvinyl butyral liquid, 0.6-1% of a dispersant, 0.5-0.8% of a leveling agent, 0.1-0.2% of a defoaming agent, 0.4% of organic bentonite, 0.5% of carbon black, 15-20% of anatase titanium dioxide, 6-8% of precipitated barium sulphate, 0.8-1% of a drier, 0.1-0.2% of an anti-skinning agent and 15-18% of a solvent. According to the modified alkyd finish paint capable of being thickly coated, phenolic resin is adopted for modification, the dryness, hardness and water resistance of the paint film are improved, meanwhile, polyvinyl butyral is added, the adhesive force and flexibility of the paint film are improved, and the prepared modified alkyd finish paint has the characteristic of being thickly coated.

Description

technical field [0001] The invention belongs to the field of general-purpose alkyd resin coatings, and relates to the preparation of a thick-coatable modified alkyd topcoat. Background technique [0002] Alkyd resin coating occupies an important position in the coating synthesis industry because of its high gloss, high fullness and excellent construction performance. It can be used as primer, top coat, varnish, etc., and can also be cross-linked and cured with amino resin and isocyanate to form a film. However, conventional alkyd resin coatings have the disadvantages of slow drying, low mechanical strength, poor anti-corrosion performance and incapability of thick coating, and their applicability in the engineering field is poor. For this reason, these problems have been solved by modifying alkyd resins in recent years. [0003] In recent years, various materials have been used to modify alkyd resins to solve the above shortcomings, so that some of the above shortcomings c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/08C09D161/06C09D129/14C09D7/61C09D7/20
CPCC09D167/08C09D7/61C09D7/20C08K2003/2241C08K2003/3045C08L61/06C08L29/14C08K3/22C08K3/30C08K3/04
Inventor 汪延茂康丹丹陈昱声王娅丽刘晓庆陈安强闫弘毅
Owner 陕西宝塔山油漆股份有限公司
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