Air drying type organic silicon modified alkyd resin and production method thereof

Abstract

The invention provides a production method of air drying type organic silicon modified alkyd resin. A component A consists of oleic acid 17-19 parts, pentaerythritol 4.5-5.5 parts, 95% of glycerol 4.3-5.2 parts, benzoic acid 0.7-0.9 part, maleic anhydride 0.1-0.3 part, antioxidizer 0.09-0.12 part, organic silicon intermediate 10.0-12.5 parts and dimethylbenzene 0.9-1.2 parts. A component B consists of phthalic anhydride 8-12 parts, dimethylbenzene 1.5-1.9 parts and dilution 200#solvent 45-50 parts. The production method is that N2 gas is lead into a reaction kettle, the component A is added into the reaction kettle in stirring, the kettle temperature is raised to be smaller than or equal to 80 DEG C, the antioxidizer is added into the kettle, the temperature is raised till returned dimethylbenzene is stable, and then the N2 gas leading-in is stopped; the temperature is continuously raised to 220-230 DEG C and then is kept for 2 hours, the component B is added into the kettle when the temperature drops to 150 DEG C, the temperature is raised to 200-210 DEG C and then is kept for 1 hour, the N2 gas is led into the kettle, the temperature drops to 175-179 DEG C, the 200#solvent is added in twice mode, and then a mixer is filled into barrels and packaged when the viscosity is adjusted to be 300-500 S and the filter pressing fineness is smaller than or equal to 10 mum.

Description

technical field [0001] The invention relates to the modification of resin materials, and synthesizes organosilicon modified alkyd resin, which has broad market prospects as materials for enamel paint, high-temperature-resistant paint and anti-rust paint. Background technique [0002] Alkyd resins are widely used due to their structural characteristics, which make the final coating film plump and bright, as well as easy application and crosslinking with oxygen, making them self-drying and versatile, but they dry and cure very slowly, especially at room temperature This is even more so; at the same time, the coating film has low hardness, poor water resistance and weather resistance, while silicone modified alkyd resin not only retains the characteristics of good fullness and easy construction of alkyd resin, but also inherits the characteristics of silicone resin. It has the characteristics of enhanced weather resistance and high temperature resistance, and the cost is low, w...

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Problems solved by technology

[0002] Alkyd resins are widely used due to their structural characteristics, which make the final coating film plump and bright, as well as their ease of application and cross-linking with oxygen, making them self-drying and versatile, but their drying and curing are rather slow, especially at room temperature More so; at the same time, its coating film has low hardness, poor water resistance and weather resistance, while silicone modified alkyd resin not only retains the characteristics of good fullness and easy construction of alkyd resin, but also inherits the characteristics of silicone resin. It has the characteristics of enhanced weather resistance and high temperature resistance, and the cost is low, which has an outstanding cost performance. Although there are alkyd resins modified with silicone in China, they need to use drying oil or oleic acid. Poor performance; xylene is often used for dilute dissolution, and the content of toxic and harmful substances is high

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