Anti-yellowing unsaturated polyester resin and synthetic method thereof
A polyester resin, unsaturated technology, applied in the field of polymer chemistry, can solve the problems of loss of use function, product surface pulverization, structural damage, etc., to expand the scope of use, good yellowing resistance and weather resistance, and improve yellowing resistance The effect of changing abilities
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Embodiment 1
[0012] formula:
[0013] Reaction kettle formula: antioxidant 1g, adipic acid 290g, maleic anhydride 590g, neopentyl glycol 150g, ethylene glycol 190g, propylene glycol 300g, polymerization inhibitor methyl hydroquinone 0.2g;
[0014] Dilution kettle recipe: 500g styrene, 80g methyl methacrylate, 0.8g paraffin, 0.3g copper naphthenate, 2g light stabilizer.
[0015] making process:
[0016] Check and confirm whether the equipment, electrical appliances, instruments, valves and raw materials are normal, and put other reaction kettle formula raw materials into the reaction pot according to the recipe, except for the polymerization inhibitor methyl hydroquinone, and raise the temperature after feeding the materials, and the temperature of the raw materials will rise Supply nitrogen to 145°C (speed 0.5m 3 / h), horizontal condenser water supply, when the material temperature rises to 150°C, start stirring, when the distillation temperature rises to 98°C vertical condenser water su...
Embodiment 2
[0018] formula:
[0019] Reaction kettle formula: antioxidant 0.8g, adipic acid 438g, maleic anhydride 490g, neopentyl glycol 150g, ethylene glycol 190g, propylene glycol 300g, polymerization inhibitor methyl hydroquinone 0.2g;
[0020] Dilution kettle recipe: 500g styrene, 0.3g copper naphthenate, 0.8g paraffin, 80g methyl methacrylate, 2g light stabilizer.
[0021] making process:
[0022] Check and confirm whether the equipment, electrical appliances, instruments, valves and raw materials are normal, and put other reaction kettle formula raw materials into the reaction pot according to the recipe, except for the polymerization inhibitor methyl hydroquinone, and raise the temperature after feeding the materials, and the temperature of the raw materials will rise Supply nitrogen to 148°C (speed 0.5m 3 / h), horizontal condenser water supply, when the material temperature rises to 155 ° C, start stirring, when the distillation temperature rises to 100 ° C vertical condenser w...
Embodiment 3
[0024] formula:
[0025] Reaction kettle formula: antioxidant 0.8g, adipic acid 290g, maleic anhydride 590g, neopentyl glycol 150g, methyl propylene glycol 270g, propylene glycol 300g, polymerization inhibitor methyl hydroquinone 0.2g;
[0026] Dilution kettle recipe: 500g styrene, 80g methyl methacrylate, 0.2g copper naphthenate, 0.8g paraffin, 2g light stabilizer.
[0027] making process:
[0028] Check and confirm whether the equipment, electrical appliances, instruments, valves and raw materials are normal, and put other reaction kettle formula raw materials into the reaction pot according to the recipe, except for the polymerization inhibitor methyl hydroquinone, and raise the temperature after feeding the materials, and the temperature of the raw materials will rise Supply nitrogen to 146°C (speed 0.5m 3 / h), horizontal condenser water supply, when the material temperature rises to 153 ° C, start stirring, when the distillation temperature rises to 99 ° C vertical cond...
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