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Preparation method of alkyd resin

A kind of technology of alkyd resin and preparation steps, which is applied in the field of alkyd resin preparation, which can solve the problems of difficult to meet the requirements of water resistance and adhesion, difficult to meet the requirements of "triphenyl" content, etc., and achieve easy esterification, strong activity, and improved miscibility effect

Inactive Publication Date: 2012-04-11
JIANGSU SANMU GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water resistance and adhesion of general alkyd resins are difficult to meet the requirements, and the "triphenyl" content (ie toluene, xylene, benzene content) and phthalate content in general alkyd resins is difficult to meet the requirements

Method used

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  • Preparation method of alkyd resin
  • Preparation method of alkyd resin
  • Preparation method of alkyd resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Put neopentyl glycol, trimethylolpropane, phthalic anhydride, tetrahydrophthalic anhydride, and hypophosphorous acid into the reaction vessel, raise the temperature, make the materials melt and esterify at 230°C, and the generated water is discharged from the condenser;

[0028] (2) When the acid value in step (1) is esterified to 40mgkOH / g, cool down to 120°C, and add capric acid and D-40 organic solvent;

[0029] (3) Heat up, reflux at 190°C for esterification, the generated water and the reflux solvent are azeotroped and then discharged from the condenser. When the acid value is 8 mgkOH / g, dilute with butyl acetate;

[0030] (4) Cool down to 100°C and filter to obtain the alkyd resin;

[0031] The above raw materials and their weights are shown in Table 1.

Embodiment 2

[0033] (1) Put neopentyl glycol, trimethylolpropane, phthalic anhydride, tetrahydrophthalic anhydride, and hypophosphorous acid into the reaction vessel, raise the temperature to make the material melt and esterify at 240°C, and the generated water is discharged from the condenser;

[0034] (2) When the acid value in step (1) is esterified to 45mgkOH / g, lower the temperature to 140°C, and add dodecanoic acid and D-40 organic solvent;

[0035] (3) Heat up, reflux at 200°C for esterification, the generated water and the reflux solvent are azeotroped and then discharged from the condenser. When the acid value is 8 mgkOH / g, dilute with butyl acetate;

[0036] (4) Cool down to 100°C and filter to obtain the alkyd resin;

[0037] The above raw materials and their weights are shown in Table 1.

Embodiment 3

[0039] (1) Put neopentyl glycol, trimethylolpropane, phthalic anhydride, hexahydrophthalic anhydride, and hypophosphorous acid into the reaction vessel, raise the temperature to melt and esterify the materials at 200°C, and the generated water is discharged from the condenser;

[0040] (2) When the acid value in step (1) is esterified to 42mgkOH / g, cool down to 160°C, and add octanoic acid and D-40 organic solvent;

[0041] (3) Raise the temperature, reflux at 180°C for esterification, the generated water and the reflux solvent are azeotroped and then discharged from the condenser. When the acid value is 8 mgkOH / g, dilute with ethyl acetate;

[0042] (4) Cool down to 100°C and filter to obtain the alkyd resin;

[0043] The above raw materials and their weights are shown in Table 1.

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Abstract

The invention relates to a preparation method of alkyd resin. The preparation method comprises the following specific steps: (1) adding neopentyl glycol, trihydroxymethyl propane, phthalic anhydride, hydrogenated phthalic anhydride and antioxidant to a reaction container, and heating to carry out melt esterification on the materials at the temperature of 200-240 DEG C; (2) when esterification is carried out to an acid value being 40-45 mgKOH / g, cooling to 120-160 DEG C, and adding short-chain synthetic fatty acid and an aliphatic hydrocarbon solvent; (3) heating to carry out reflux esterification at the temperature of 180-200 DEG C, and diluting with acetic acid ester organic solvent when the acid value is smaller than or equal to 8 mgKOH / g; and (4) cooling to 100 DEG C and filtering to obtain alkyd resin. The paint prepared from the alkyd resin obtained in the invention and nitrocellulose has the characteristics of rapid drying, high hardness, good fullness, good adhesion force, and good water resistance.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a method for preparing alkyd resin. Background technique [0002] Nitro nail polish is generally made of nitrocellulose and acrylic resin or alkyd resin. It requires good dryness, high gloss, good fullness, good adhesion, high hardness, and good water resistance. More importantly, it must be environmentally friendly. Physically harmless. Generally, the luster of acrylic resin is not as good as that of alkyd resin. In addition, there are residual monomers in acrylic resin. Although it is very small, it is still harmful to the body. The water resistance and adhesion of general alkyd resins are difficult to meet the requirements, and the "triphenyl" content (ie toluene, xylene, benzene content) and phthalate content in general alkyd resins is difficult to meet the requirements. Contents of the invention [0003] Aiming at the above-mentioned problems in the prior art, the prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/553C08G63/20C08G63/78C08K3/32A61K8/85A61Q3/02
Inventor 杨森薛中群惠正权邵瑞峰蒋健
Owner JIANGSU SANMU GROUP CORPORATION
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