Epoxy modified waterborne alkyd resin and preparation method thereof

The invention relates to the technical field of alkyd resin, in particular to the field of IPC C08G63, and more particularly relates to epoxy modified waterborne alkyd resin and a preparation method thereof. The invention relates to a high-temperature-resistant epoxy resin, which is prepared from the following components in parts by weight: 20 to 30 parts of fatty acid, 8 to 15 parts of polyhydric alcohol, 10 to 20 parts of dibasic acid, 1 to 5 parts of monobasic acid, 0.02 to 0.2 part of catalyst, 0.05 to 0.15 part of antioxidant, 2 to 10 parts of epoxy resin, 1.5 to 5.5 parts of solvent, 15 to 30 parts of cosolvent, 7 to 20 parts of acrylic acid monomer, 0.1 to 1.5 parts of initiator and 2 to 6 parts of neutralizer. And when the epoxy resin comprises solid epoxy resin with the epoxy equivalent of 450-1000g/eq, the drying performance of the prepared varnish can be greatly improved, and meanwhile, the hardness, the water resistance and the neutral salt spray corrosion resistance of the prepared waterborne alk