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Water-based alkyd resin and preparation method thereof

A water-based alkyd resin, acid value technology, applied in the field of water-based alkyd resin and its preparation, can solve the problem that the wet adhesion of the alkyd resin needs to be further improved, and achieve the effects of improving water resistance and reducing erosion

Active Publication Date: 2017-11-10
绍兴长木新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual use, the wet adhesion of the alkyd resin still needs to be further improved.

Method used

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  • Water-based alkyd resin and preparation method thereof
  • Water-based alkyd resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of water-based alkyd resin, comprising the following steps:

[0030] S1. Add 40 parts by mass of linoleic acid, 5 parts by mass of benzoic acid, 11 parts by mass of dibasic acid, 9 parts by mass of polyhydric alcohol, and 1 part by mass of xylene into the reaction kettle, stir and heat up to 160-180°C , react for 3-4 hours, then heat up to 200-210°C, react for 5-6 hours, when the acid value of the reactant reaches 7mgKOH / g, enter step S2;

[0031] S2. First cool down to 160-170°C, then add 3 parts by mass of trimellitic anhydride and 1 part by mass of xylene, then raise the temperature to 175-185°C, react for 1-2 hours, when the acid value of the reactant reaches 35mgKOH / g , enter step S3;

[0032] S3. First cool down to 140°C, then add 5 parts by mass of sodium diisooctyl succinate, keep warm for 20min to 50min, and then enter step S4;

[0033] S4. Add 25 parts by mass of co-solvent, then lower the temperature to 100-120° C., stir evenly, and obt...

Embodiment 2

[0037] Its preparation method refers to Example 1, and the difference between Example 2 and Example 1 is that: 50 parts by mass of linolenic acid, 6 parts by mass of benzoic acid, 13 parts by mass of dibasic acid, 12 parts by mass of The xylene of polyhydric alcohol, 2 mass parts; Add the xylene of 4 mass parts of trimellitic anhydride and 2 mass parts in step S2; In step S3, add the diisooctyl sodium succinate sulfonate of 8 mass parts; Add 30 in step S4 Parts by mass of co-solvent.

Embodiment 3

[0039] Its preparation method refers to Example 1, and the difference between Example 5 and Example 1 is that: 50 parts by mass of linolenic acid, 6 parts by mass of benzoic acid, 13 parts by mass of dibasic acid, 12 parts by mass of The xylene of 2 mass parts of polyhydric alcohol; Add 4 mass parts of trimellitic anhydride and the xylene of 3 mass parts in step S2; In step S3, add the diisooctyl sodium succinate sulfonate of 8 mass parts; Add 30 mass parts in step S4 parts of co-solvent.

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Abstract

The present invention provides water-based alkyd resin and a preparation method thereof. The preparation method comprises the following steps: S1. adding 40 to 50 parts by mass of linoleic acid, 5 to 6 parts by mass of benzoic acid, 11 to 13 parts by mass of dibasic acid, 9 to 12 parts by mass of a polyol and 0 to 3 parts by mass of xylene into a reactor for reaction, and when the acid value of the reactants reaches 7mgKOH / G-15mgKOH / g, entering S2; S2. adding 3 to 4 parts by mass of trimellitic anhydride and 0 to 2 parts by mass of xylene, and when the acid value of the reactants reaches 35mgKOH / g-40mgKOH / g, entering S3; S3. adding 5-10 parts by mass of Sodium Dioctyl Sulfosuccinate, reacting for 20min-50min, and entering S4; and S4. adding 25-30 parts by mass of a solubilizing assistant, and evenly stirring to obtain the product.

Description

technical field [0001] The invention relates to the field of water-based paints, in particular to a water-based alkyd resin and a preparation method thereof. Background technique [0002] Water-based alkyd resin is a high-acid value low-viscosity resin formed by esterification and polycondensation of polyols, polybasic acids and vegetable oils (acids) or other fatty acids. The water-based paint prepared by neutralizing the resin with an organic amine has the advantages of strong adhesion, high hardness, impact resistance and low VOC emission. [0003] Water-soluble resin can be dissolved in water, the main reason is that there are hydrophilic groups on the molecular chain. However, it is precisely because of the presence of these hydrophilic groups in water-based paint that it is much inferior to the wet adhesion of the same type of solvent paint, that is, it is easy to lose its viscosity and fall off in a humid environment, which limits the water-soluble paint. scope of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/91C08G63/49
CPCC08G63/48C08G63/918
Inventor 于郭崔文园李和青雷坤
Owner 绍兴长木新材料科技有限公司
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