A kind of multi-functional hybrid curing resin and preparation method thereof
A hybrid curing, multi-functionality technology, applied in coatings, polyurea/polyurethane coatings, etc., to achieve the effect of reducing usage, enhancing adhesive performance, and low viscosity
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Embodiment 1
[0038] The first step, in 500mL there-necked flask, add 30g solvent propylene glycol methyl ether acetate, 30g methyl methacrylate, 30g methyl acrylate, 30g glycidyl methacrylate, 80g hydroxyethyl methacrylate, 30g styrene, Stir evenly, add catalyst azobisisobutyronitrile accounting for 0.8% of the total mass of the monomer, heat to 68°C while stirring, and react for 3 hours to obtain a polyacrylate segment with hydroxyl and epoxy groups in the side chain ①, In the polyacrylate segment, the mass percentage of hydroxyethyl methacrylate (the source of the hydroxyl group) is 40%, and the mass percentage of the glycidyl methacrylate (the source of the epoxy group) is 15%.
[0039] In the second step, add 1mol of toluene diisocyanate (TDI) to a 1000mL three-necked flask, heat it to 63°C, and add 0.5% of dibutyltin dilaurate to 0.5mol of polyethylene glycol (molecular weight: 600) , dropwise into toluene diisocyanate (TDI) solution, continue to react for 2.5h after dropping, add 0.3...
Embodiment 2
[0043] In the first step, add 30g solvent ethylene glycol butyl ether acetate, 40g butyl acrylate, 60g methyl methacrylate, 40g glycidyl methacrylate, 40g hydroxyethyl acrylate, 20g acrylonitrile in a 500mL three-necked flask, Stir evenly, add 1.0% of the catalyst benzoyl peroxide tert-butyl peroxide, and heat to 65°C while stirring, and react for 3 hours to obtain a polyacrylate chain with hydroxyl and epoxy groups in the side chain Section ①; in the polyacrylate segment, the mass percentage of hydroxyethyl acrylate (the source of the hydroxyl group) is 20%, and the mass percentage of the glycidyl methacrylate (the source of the epoxy group) is 20%.
[0044] In the second step, add 1mol of isophorone diisocyanate (IPDI) to a 1000mL three-necked flask, heat to 70°C, and add 0.4% of dibutyltin dilaurate to 0.5mol of polyethylene glycol ( Molecular weight 1000), add dropwise to isophorone diisocyanate (IPDI) solution, continue to react for 2 hours after dropping, add 0.6% p-hydr...
Embodiment 3
[0048] The first step, add 30g solvent propylene glycol diacetate, 30g butyl methacrylate, 40g methyl acrylate, 50g glycidyl acrylate, 20g hydroxyethyl acrylate, 10g hydroxypropyl methacrylate, 30g Styrene, 20g of acrylamide, stir evenly, add 0.6% catalyst benzoyl peroxide, which accounts for 0.6% of the total mass of the monomer, heat to 73°C while stirring, and react for 2.5h to obtain a compound with hydroxyl and epoxy groups in the side chain Polyacrylate segment ①; in the polyacrylate segment, the mass percentage content of hydroxy acrylate (source of hydroxyl group) is 15%, and the mass percentage content of glycidyl acrylate (source of epoxy group) is 25%.
[0049] In the second step, add 1mol of phenylmethane diisocyanate (MDI) to a 1000mL three-necked flask, heat it to 68°C, add 0.6% of dibutyltin dilaurate to 0.5mol of 1,6-hexanedi Alcohol, dropwise into the phenylmethane diisocyanate (MDI) solution, continue to react for 2 h after dropping, add 0.8% p-hydroxyanisole...
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