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Modified alkyd resin as well as preparation method of alkyd resin and double-component matte white finish

A technology of alkyd resin and white topcoat, applied in coatings, polyester coatings, etc., can solve the problems of low photocatalytic efficiency, inability to meet the functional requirements of removing formaldehyde, powdering, etc., and achieve simple operation and stable products , the effect of excellent use characteristics

Active Publication Date: 2013-07-24
CARPOLY CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this technology has the following two problems: one is that the photocatalytic efficiency is low under visible light, and the other is that the generated free radicals can easily oxidize and decompose conventional resins, resulting in pulverization of the paint film surface
Although the above-mentioned existing alkyd resins perform well in terms of decoration and protection after being formulated into coatings, they cannot meet the functional requirements of removing formaldehyde.

Method used

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  • Modified alkyd resin as well as preparation method of alkyd resin and double-component matte white finish
  • Modified alkyd resin as well as preparation method of alkyd resin and double-component matte white finish
  • Modified alkyd resin as well as preparation method of alkyd resin and double-component matte white finish

Examples

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preparation example Construction

[0093] Correspondingly, the invention provides a kind of preparation method of modified alkyd resin, comprising:

[0094] reacting an alkyd mixture comprising:

[0095] 210-220 parts by weight of soy oil;

[0096] 250~270 parts by weight of phthalic anhydride;

[0097] 5-7 parts by weight of maleic anhydride;

[0098] The neopentyl glycol of 15~20 parts by weight;

[0099] 135~150 parts by weight of pentaerythritol;

[0100] 0.5~1 parts by weight of color-reducing antioxidant;

[0101] 15-20 parts by weight of water-carrying agent;

[0102] 255-280 parts by weight of diluted solvent;

[0103] 0.5-1.5 parts by weight of anti-aging agent;

[0104] 60-76 parts by weight of the compound represented by formula (I):

[0105]

[0106] In formula (I), 1≤n≤4.

[0107] The present invention reacts an alkyd mixture containing polyols, organic acids, additives and compounds represented by formula (I) as a raw material to generate a modified alkyd resin, and uses the modified a...

Embodiment 1

[0178] Nitrogen was passed through the empty reactor for 8 minutes in advance, and the nitrogen flow rate was 2m 3 / h;

[0179] Add 50 parts by weight of diethyl malonate, 40 parts by weight of ethylene glycol and 0.05 parts by weight of n-butyl titanate to the above reaction kettle for transesterification reaction. During the whole process of the reaction, nitrogen protection is carried out. , the temperature of the reactor is kept at 150°C by means of heating, and the distillation temperature is controlled to be ≤78.4°C. After 5 hours of reaction, the temperature is raised to 165°C and the reaction is continued for at least 10 minutes. When no distillate is distilled out, the end point is obtained. Compounds represented by formula (I);

[0180] Turn off the heating, put 210 parts by weight of soybean oil, 15 parts by weight of xylene and 0.5 parts by weight of hypophosphorous acid (trade name M070) into the above reaction kettle in sequence, and put 250 parts by weight into...

Embodiment 2

[0188] Nitrogen was passed through the empty reactor for 3 minutes in advance, and the nitrogen flow rate was 5m 3 / h;

[0189] Add 60 parts by weight of diethyl malonate, 50 parts by weight of ethylene glycol and 1.5 parts by weight of n-butyl titanate to the above reaction kettle to carry out the transesterification reaction. During the whole process of the reaction, nitrogen protection is carried out. , the temperature of the reactor is kept at 165°C by heating, and the distillation temperature is controlled to be ≤78.4°C. After 3 hours of reaction, the temperature is raised to 170°C and the reaction is continued for at least 10 minutes. When no distillate distills out, it is the end point, and Compounds represented by formula (I);

[0190] Turn off the heating, put 220 parts by weight of soybean oil, 20 parts by weight of xylene and 1 part by weight of hypophosphorous acid (commercial name M070) into the above reaction kettle in sequence, and put 270 parts by weight into ...

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Abstract

The invention provides a modified alkyd resin and a preparation method thereof. The preparation method of the modified alkyd resin comprises the following step of: enabling an alcohol acid mixture to react to obtain the modified alkyd resin, wherein the alcohol acid mixture comprises the following components in parts by weight: 210-220 parts of soya-bean oil acid, 250-270 parts of phthalic anhydride, 5-7 parts of maleic anhydride, 15-20 parts of neopentyl glycol, 135-150 parts of pentaerythritol, 0.5-1 part of color-reducing antioxidant, 15-20 parts of water-carrying agent, 255-280 parts of diluted solvent, 0.5-1.5 parts of anti-aging agent and 60-76 parts of a compound as shown in formula (I), wherein n is not less than 1 and not more than 4. The compound as shown in the formula (I) is used for modifying the alkyd resin, so that the alkyd resin with a formaldehyde removing function is obtained. The invention further provides double-component matte white finish with an excellent formaldehyde removing function.

Description

technical field [0001] The invention relates to the technical field of coatings and alkyd resins for coatings, in particular to a modified alkyd resin, a preparation method thereof and a two-component matte white finish. Background technique [0002] Formaldehyde is a colorless gas with a strong pungent odor, with a relative molecular mass of 30.03, easily soluble in water, alcohol and ether. Formaldehyde aqueous solution with a mass concentration of 35% to 40%, generally 37%, is also called "formalin" solution, which is extremely volatile at room temperature. Formaldehyde has good chemical reactivity and excellent cost performance. It is an important organic raw material widely used and plays an important role in industrial production and anti-corrosion processes. However, free formaldehyde in the air is a serious pollutant. Formaldehyde is a protoplasmic poison, which can cause irreversible coagulation of protein in the protoplasm of cells, and can cause damage to the ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/52C08G63/21C09D167/08C09D167/06C09D7/12
Inventor 莘建忠颜荣胜罗俊君何燚鹏钟永贤杨岳森梁斌未友国王代民
Owner CARPOLY CHEM GRP
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