Preparation method of modified unsaturated polyester resin coating
A polyester resin, unsaturated technology, used in polyester coatings, polyurea/polyurethane coatings, coatings, etc., to achieve high activity, good overall performance, and good filling.
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Embodiment 1
[0022] The aggregation steps are as follows:
[0023] (1) Synthesis of isocyanate prepolymer:
[0024] Add 1.01 mole of toluene diisocyanate dropwise to 1.00 mole of commercially available polyester diol, dibutyltin dilauric acid 0.01% mole, stir and mix at a slow speed at 50°C for further use.
[0025] (2) Preparation of polyurethane with epoxy resin at the end:
[0026] Add 1.01 mole of glycidyl ether epoxy resin dropwise to 1 mole of isocyanate prepolymer synthesized in step (1), add 0.05% mole of dibutyltin dilaurate catalyst, polymerize at 70°C, and synthesize the terminal group as epoxy Resin polyurethane, cool to room temperature.
[0027] (3) Preparation of polyurethane / epoxy resin modified unsaturated polyester resin coating:
[0028] Add 10 parts of polyurethane whose end is epoxy resin to 100 parts of commercially available common ortho-phthalic unsaturated polyester resin, and add 10 parts of 10% styrene diluent. Finally, add 0.5% triethylenediamine catalyst, 2...
Embodiment 2
[0031] The aggregation steps are as follows:
[0032] (1) Synthesis of isocyanate prepolymer:
[0033] Add 1.10 mol of diphenylmethane diisocyanate dropwise to 1.00 mol of commercially available polyether diol, 0.5% mol of dibutyltin dilauric acid catalyst, stir and mix at a slow speed at 50°C for further use.
[0034] (2) Preparation of polyurethane with epoxy resin at the end:
[0035] Add 1.10 moles of glycidyl ester epoxy resin dropwise to 1 mole of isocyanate prepolymer synthesized in step (1), add 0.5% mole of dibutyltin dilaurate catalyst, polymerize at 70°C, and synthesize the terminal group as epoxy Resin polyurethane, cool to room temperature.
[0036] (3) Preparation of polyurethane / epoxy resin modified unsaturated polyester resin coating:
[0037] Add 100 parts of polyurethane with epoxy resin terminal to 10 parts of commercially available common isophthalic unsaturated polyester resin and mix, and add 60 parts of 50% styrene butyl acetate diluent. Finally, add...
Embodiment 3
[0040] The aggregation steps are as follows:
[0041] (1) Synthesis of isocyanate prepolymer:
[0042] Add 1.05 moles of diphenylmethane diisocyanate dropwise to 1.00 moles of commercially available polyether diol, 0.5 moles of bis(dodecylsulfide) dibutyltin catalyst, stir and mix at a slow speed at 50°C until ready for use.
[0043] (2) Preparation of polyurethane with epoxy resin at the end:
[0044] Add 1.06 mol of glycidylamine epoxy resin dropwise to 1 mol of isocyanate prepolymer synthesized in step (1), add 0.1% mol of dibutyltin dilaurate catalyst, polymerize at 70°C, and synthesize the terminal group as epoxy Resin polyurethane, cool to room temperature.
[0045] (3) Preparation of polyurethane / epoxy resin modified unsaturated polyester resin coating:
[0046] Add 40 parts of polyurethane whose end is epoxy resin to 60 parts of commercially available common ortho-phthalic unsaturated polyester resin and mix, add 50 parts of acetone diluent with 20% styrene. Finall...
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