A kind of preparation method of waterborne epoxy ester modified petroleum resin and dispersion thereof
A technology of petroleum resin and epoxy resin, which is applied in coatings, anti-corrosion coatings, etc., to reduce the content of ester bonds, improve flexibility and anti-corrosion performance, and reduce costs
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Embodiment 1
[0023] Add 15 grams of soy oil, 15 grams of epoxy resin (epoxy value 0.12), and 0.03 grams of zinc oxide into a four-neck bottle, feed nitrogen, start heating up, and heat up to 130 ° C. After the epoxy resin melts, stir and continue to heat up Keep warm at 220°C until the acid value is below 5mgKOH / g. The temperature was lowered to 150° C., and 15 grams of C9 petroleum resin and 20 grams of ethylene glycol monobutyl ether were added.
[0024] Mix 5 grams of styrene, 2 grams of acrylic acid, and 0.5 grams of di-tert-butyl peroxide evenly. When the temperature is 140-145 ° C, start to add the mixture dropwise to the above reaction system, and use 2-3 hours to make the mixture uniform. Drop into the above-mentioned material, add 0.1 gram of di-tert-butyl peroxide after dropping, keep warm for 3 hours, obtain the epoxy ester modified petroleum resin with a solid content value of 72.5%, and an acid value of 29.6 mg KOH / g;
[0025] At 80-100°C, add 3 grams of N,N dimethylethanolam...
Embodiment 2
[0027] Add 25 grams of linoleic acid, 15 grams of epoxy resin (epoxy value 0.1), and 0.02 grams of zinc naphthenate into a four-necked bottle, feed nitrogen, start to heat up, and heat up to 130 ° C. After the epoxy resin melts, start stirring , continue to heat up to 230 ° C to keep the acid value below 10. Cool down to 140°C, add 15 grams of C9 petroleum resin, 10 grams of ethylene glycol monobutyl ether and 15 grams of D40 solvent naphtha;
[0028] Mix 10 grams of styrene, 40 grams of acrylic acid, and 0.5 grams of di-tert-butyl peroxide evenly. When the temperature is 140-145 ° C, start to add the mixture dropwise to the above reaction system, and use 2-3 hours to make the mixture uniform. Drop into the above-mentioned material, add 1 gram of di-tert-butyl peroxide after dropping, keep warm for 3 hours, obtain a solid content value of 71.5%, an epoxy ester modified petroleum resin with an acid value of 42mgKOH / g;
[0029] Add 50 grams of N,N dimethylethanolamine to the ab...
Embodiment 3
[0031] Add 15 grams of tall oleic acid, 10 grams of epoxy resin (epoxy value 0.51), and 0.025 grams of zinc oxide into a four-neck bottle, feed nitrogen, start to heat up, heat up to 130 ° C, and start stirring after the epoxy resin melts. Continue to heat up to 200°C and keep warm until the acid value is below 10. Cool down to 115°C, add 30 grams of C9 petroleum resin, 12 grams of ethylene glycol monobutyl ether and 12 grams of D40 solvent naphtha;
[0032]Mix 15 grams of styrene, 4 grams of acrylic acid, and 0.8 grams of di-tert-butyl peroxide evenly. When the temperature is 140-145 ° C, start to add the mixture dropwise to the above reaction system, and use 2-3 hours to make the mixture uniform. Drop in the above-mentioned material, add 0.2 gram of di-tert-butyl peroxide after dripping, keep warm for 3 hours, obtain solid content value 75.8%, the epoxy ester modified petroleum resin of acid value 41.5mgKOH / g;
[0033] At 80-100°C, add 6 grams of N,N dimethylethanolamine to...
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