Alkyd resin as well as preparation method of same

The invention belongs to the technical field of resin, and particularly relates to an alkyd resin as well as a preparation method of same. The alkyd resin includes, by weight, 214-235 parts of fatty acid, 259-291 parts of phthalic anhydride, 0-43 parts of benzoic acid, 0-142 parts of pentaerythritol, 0-187 parts of glycerin, 0-68 parts of ethylene glycol, 0.05-0.1 parts of hypophosphorous acid, 0.08-0.12 parts of an antioxidant, and 269-335 parts of dimethylbenzene. In the method, the ratio of fatty acid to other components is reasonable, so that the alkyd resin, synthesized through the two-step process, is anti-yellowing and weather-resistant. The method also solves the problems that after alkyd resin, produced from fatty acid as a raw material in the prior art, is used for preparing paint, crystal substances are separated out from the paint when the temperature in autumn and winter decreases sharply, the atmosphere pressure is changed sharply and humidity is low. 本发明属于树脂技术领域，具体涉及种醇酸树脂及其制备方法。本发明的醇酸树脂，包括以下重量份