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Acetacetic acid alkyl ester metal chelate coating drier and production thereof

A technology of alkyl acetoacetate and metal chelate, which is applied in the direction of drier, chemical instrument and method, coating, etc., can solve the problems of unconducted research and corresponding experiments, and achieve simple preparation process and source Broad, high-yield effects

Inactive Publication Date: 2006-05-31
上海市涂料研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, almost all researches on β-diketone chelating drier only focus on its performance in solvent-based coatings, but its research on water-based coatings has not been carried out, or it has only been mentioned without corresponding experiments.

Method used

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  • Acetacetic acid alkyl ester metal chelate coating drier and production thereof
  • Acetacetic acid alkyl ester metal chelate coating drier and production thereof
  • Acetacetic acid alkyl ester metal chelate coating drier and production thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A: Preparation of n-butyl acetoacetate

[0034] 1. Reaction equation:

[0035]

[0036] 2. Formulation:

[0037] Reactant Mole Mass (g)

[0038] n-Butanol 1.05 77.7

[0039] Diketene 1.0 84

[0040] 98% concentrated sulfuric acid (catalyst) 0.5

[0041] 3. Operation process:

[0042] Put the four-necked flask on the electric constant speed stirrer, install the reflux water separator at the left port, install the constant pressure dropping funnel at the right port, connect the nitrogen inlet pipe at the top port of the dropping funnel, install the thermometer at the fourth port, and react The flask was heated with an electric heating mantle without an open flame.

[0043] Put n-butanol and concentrated sulfuric acid into the reaction bottle according to the recipe, heat up under stirring, and protect with nitrogen gas. Heat to 90°C, and slowly add diketene dropwise after the temperature stabilizes (the reaction exotherms violently, so the rate of addition is co...

Embodiment 2

[0096] A: Preparation of n-pentyl acetoacetate

[0097] 1. Reaction equation:

[0098]

[0099] 2. Formulation:

[0100] Reactant Mole Mass (g)

[0101] n-Pentanol 1.0 88.2

[0102] Diketene 1.0 84.0

[0103] p-toluenesulfonic acid (catalyst) 0.5

[0104] 3. Operation process:

[0105] According to the reaction device of Example 1, drop n-amyl alcohol and p-toluenesulfonic acid into the reaction bottle, heat up under stirring, and protect with nitrogen. Heating to 90°C, and slowly adding diketene dropwise after stabilization (the reaction exothermic is violent, so the rate of addition is controlled so that the temperature is controlled at about 90°C). After diketene is added dropwise, react at 90°C---100°C for 2 hours.

[0106] After the reaction was completed, the reactant was cooled to 50° C., and neutralized to neutrality with 10% aqueous sodium carbonate. Stand to separate layers, remove the water layer, and dry the oil layer with anhydrous magnesium sulfate ove...

Embodiment 3

[0143] A: Preparation of n-hexyl acetoacetate:

[0144] 1. Reaction equation:

[0145]

[0146] 2. Formulation:

[0147] Reactant Mole Mass (g)

[0148] n-Hexanol 1.0 102

[0149] Diketene 1.0 84.0

[0150] Triethylamine (catalyst) 1.5ml

[0151] 3. Operation process:

[0152] According to the reaction device of Example 1, drop into n-hexanol and triethylamine in the reaction flask, heat up under stirring, and protect with nitrogen. Heating to 60°C, and slowly adding diketene dropwise after stabilization (the reaction exothermic is violent, so the rate of addition is controlled so that the temperature is controlled at about 60°C). After the diketene is added dropwise, react at about 60°C for 1 hour, depending on the completeness of the reaction of diketene, and the end point of the reaction is controlled by gas chromatography.

[0153] After the reaction was complete, the reactant was cooled. Distill under reduced pressure to collect the target product fraction at 1...

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Abstract

A drier of acetacetic acid alkyl ester metal chelate paint and its production are disclosed. The procedure is carried out by reacting alkyl alcohol with diketene to obtain acetacetic acid alkyl ester chelant, and synthesizing the chelant with inorganic metal salt to obtain drier of acetacetic acid alkyl ester metal chelate. Its advantages include solid storage, light color, non-toxic, various raw material resources, simple process and more output.

Description

technical field [0001] The invention relates to a paint drier for solvent-based paints and water-based paints containing drying vegetable oil, in particular to an alkyl acetoacetate metal chelate paint drier. Background technique [0002] Organometallic soap driers have a long history of development and are still widely used today. However, with the improvement of people's awareness of environmental protection, the demand for low-toxic and non-toxic coatings continues to increase, and the limitations of traditional drier are becoming more and more obvious. [0003] Traditional drier, such as cobalt naphthenate, has dark color, high viscosity, heavy odor, and high toxicity; at the same time, it will cause drying of the paint when used. The main reason is that some components in the paint, such as pigments, dispersants, and some components in the paint, either adsorb or exchange metal ions in the drier, thereby reducing the drier activity and prolonging the coating time. fil...

Claims

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Application Information

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IPC IPC(8): C09F9/00C09D7/12
Inventor 何新照吕俊杰姚丽峰
Owner 上海市涂料研究所有限公司
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