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Preparation method of epoxy modified alkyd resin with high salt spray resistance

A technology with high salt spray resistance and rosin epoxy, which is applied in the field of alkyd resin, can solve the problems of high price and poor salt spray resistance, and achieve low odor, excellent adhesion and gloss, and high salt spray resistance sexual effect

Inactive Publication Date: 2019-10-22
HUALUN NALU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prices of rosin and epoxy are relatively high, and the salt spray resistance of ordinary alkyd resin is not very good

Method used

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  • Preparation method of epoxy modified alkyd resin with high salt spray resistance

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Put 20% castor oil, 8% glycerin, 4% pentaerythritol, 15% phthalic anhydride, 16% rosin, 1% maleic anhydride, 3% 601 epoxy into the reaction kettle, raise the temperature, control the gas phase temperature <100°C, and raise the temperature to 225- React at 230°C, add 1.5% reflux xylene and maleic anhydride after the gas phase is lower than 90°C, control the reaction temperature at 225°C, test the solid acid value and viscosity, cool to 110-115°C after passing the test, add 23% dilute ethylene di alcohol diacetate.

Embodiment 2

[0013] Put 22% castor oil, 10% glycerin, 5% pentaerythritol, 18% phthalic anhydride, 18% rosin, 1.5% maleic anhydride, 4% 601 epoxy into the reaction kettle, raise the temperature, control the gas phase temperature <100°C, and raise the temperature to 225- React at 230°C, add 1.5% reflux xylene and maleic anhydride after the gas phase is lower than 90°C, control the reaction temperature at 225°C, test the solid acid value and viscosity, cool to 110-115°C after passing the test, add 24% dilute ethylene glycol alcohol diacetate.

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Abstract

The invention discloses a preparation method of epoxy modified alkyd resin with high salt spray resistance. The preparation method includes a brief synthesis method and a process The synthesis methodincludes the following steps: putting 20-24% of castor oil, 8-12% of glycerol, 4-6%j of pentaerythritol, 15-19% of phthalic anhydride, 16-20% of rosin, 1-2% of maleic anhydride and 3-5% of 601 epoxy into a reaction vessel, rising the temperature, controlling the temperature of a gas phase to be lower than 100 DEG C, rising the temperature to 225-230 DEG C for a reaction, adding 1-2% of reflux xylene and maleic anhydride when the temperature of the gas phase is lower than 90 DEG C, controlling reaction temperature at 225 DEG C for a reaction, detecting an acid value and viscosity of solid, cooling the product to 110-115 DEG C after the acid value and the viscosity are qualified, and adding 23-25% of diluted ethylene diacetate. The beneficial effects of the preparation method of the invention are that the rosin and the 601 epoxy resin are incorporated into molecular chains of the castor oil alkyd resin through a special formula proportion to make molecular weight and molecular weight distribution of the resin be in line with expectations, thereby enabling the alkyd resin to show excellent wear resistance, hardness and high salt spray resistance. The special raw material proportion fully shows the characteristics of the raw materials and avoids the shortcomings of some of the raw materials.

Description

technical field [0001] The invention belongs to alkyd resins, in particular to a preparation method of highly salt-spray-resistant rosin epoxy-modified alkyd resins. Background technique [0002] When the ship is moored for a long time or driving in water (sea water), the hull is relatively vulnerable to corrosion, so the protection of the hull is very necessary. Usually ships are painted with anti-corrosion coatings to solve anti-corrosion problems. Most of the current marine coating resins are rosin, epoxy, and alkyd resins. The prices of rosin and epoxy are relatively high, and the salt spray resistance of ordinary alkyd resin is not very good. Coating resins with excellent salt spray resistance and low price have become the subject of intense research in the coatings industry. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the invention provides a method for preparing a highly salt-spray-resistant rosin-epoxy-modified alkyd resin. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/52C08G63/49C08G63/78
CPCC08G63/48C08G63/52C08G63/78
Inventor 陈忠平顾龙秦宽彬黄维香戴忠
Owner HUALUN NALU NEW MATERIALS
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