A kind of UV-curable hydrolysis-resistant polyester resin and preparation method thereof
A polyester resin, hydrolysis-resistant technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as poor hydrolysis resistance, poor water resistance, and hydrolysis resistance
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Embodiment 1
[0029] Step (1): In parts by mass, 15 parts of acrylic acid, 12 parts of butyl acrylate, 6 parts of hydroxypropyl acrylate, 4 parts of trifluoroethyl methacrylate, 0.6 part of benzoyl peroxide, 0.2 part of n- Add dodecyl mercaptan and 100 parts of diethylene glycol dimethyl ether into the reaction vessel, conduct free radical polymerization reaction at 110°C for 5 hours, and lower the temperature to 70°C, add 4 parts of glycidyl methacrylate to the above solution Ester, 0.6 parts of tetrabutylammonium bromide, continue to react until the epoxy peak disappears, obtain acrylic polyester resin;
[0030]
[0031] Step (2): Add 10.5 parts of isophorone diisocyanate, 25 parts of polyethylene glycol, 15 parts of polyethylene glycol monomethyl ether, and 0.1 part of catalyst dibutyltin dilaurate into the above-mentioned reaction vessel, at 70 ° C Reaction until the NCO value reaches a predetermined value to obtain a polyurethane resin prepolymer;
[0032]
[0033] Where n=10-20...
Embodiment 2
[0039] Step (1): In parts by mass, 13.7 parts of acrylic acid, 11 parts of butyl acrylate, 5.6 parts of hydroxypropyl acrylate, 10 parts of octafluoropentyl methacrylate, 0.6 part of benzoyl peroxide, 0.2 part of n- Add dodecyl mercaptan and 100 parts of diethylene glycol dimethyl ether into the reaction vessel, conduct free radical polymerization reaction at 110°C for 5 hours, and lower the temperature to 70°C, add 5 parts of glycidyl methacrylate to the above solution Ester, 0.6 parts of tetrabutylammonium bromide, continue to react till epoxy group disappears, obtain acrylic polyester resin;
[0040] Step (2): Add 9.5 parts of isophorone diisocyanate, 22.5 parts of polyethylene glycol, 14.5 parts of polyethylene glycol monomethyl ether, and 0.1 part of catalyst dibutyltin dilaurate into the above-mentioned reaction vessel, at 70 ° C Reaction until the NCO value reaches a predetermined value to obtain a polyurethane resin prepolymer;
[0041] Step (3): After preparing the a...
Embodiment 3
[0044] Step (1): In parts by mass, 12 parts of acrylic acid, 9.7 parts of butyl acrylate, 4.9 parts of hydroxypropyl acrylate, 18.6 parts of trifluoroethyl methacrylate, 0.6 part of benzoyl peroxide, 0.2 part of n- Add dodecyl mercaptan and 100 parts of diethylene glycol dimethyl ether into the reaction vessel, conduct free radical polymerization reaction at 110°C for 5 hours, then lower the temperature to 70°C, add 6.2 parts of glycidyl methacrylate to the above solution Ester, 0.6 parts of tetrabutylammonium bromide, continue to react until the epoxy peak disappears, obtain acrylic polyester resin;
[0045] Step (2): Add 8.5 parts of isophorone diisocyanate, 20 parts of polyethylene glycol, 12.5 parts of polyethylene glycol monomethyl ether, and 0.1 part of catalyst dibutyltin dilaurate into the above-mentioned reaction vessel, at 70 ° C Reaction until the NCO value reaches a predetermined value to obtain a polyurethane resin prepolymer;
[0046] Step (3): After preparing the...
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