Preparation of a kind of hyperbranched paraffin and its application in wood-based panels
A technology of wood-based panels and hydroxyl-terminated hyperbranching, applied in the field of wood-based panels, can solve problems such as poor waterproofness of wood-based panels, and achieve the effects of improving the unstable waterproof effect, good market development prospects and good stability.
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Embodiment approach 1
[0029](1) Weigh 45.032g (0.45mol) of succinic anhydride and 47.313g (0.45mol) of diethanolamine, first add the diethanolamine to a three-necked flask with a magnetic stirrer, and then dissolve the succinic anhydride with an appropriate amount of DMAc; Put it into the dropping funnel installed on the three-necked flask of diethanolamine, and stir while dropping. After dropping, raise the temperature to 40℃ and react for 12h. The product of the reaction is AB2Type monomer. In the above system, first add 160 mL of toluene (toluene is a water-carrying agent), then add 20.126g (0.15mol) of trimethylolpropane as a nuclear molecule, and add 0.500g of p-toluenesulfonic acid as a catalyst; then start heating until boiling , There is reflux in the spherical condenser, the temperature is increased to 140 ℃ and reacted for 8 hours to obtain the hyperbranched polymer solution with hydroxyl terminal. Then weigh 64.854 g (0.90 mol) of acrylic acid and 0.889 g of p-toluenesulfonic acid, first add p...
Embodiment approach 2
[0033](1) Weigh 45.032g (0.45mol) of succinic anhydride and 47.313g (0.45mol) of diethanolamine, first add the diethanolamine to a three-necked flask with a magnetic stirrer, and then dissolve the succinic anhydride with an appropriate amount of DMAc; Put it into the dropping funnel installed on the three-necked flask of diethanolamine, and stir while dropping. After dropping, raise the temperature to 40℃ and react for 12h. The product of the reaction is AB2Type monomer. In the above system, first add 160 mL of toluene (toluene is a water-carrying agent), then add 6.709 g (0.05 mol) of trimethylolpropane as a nuclear molecule, and add 0.500 g of p-toluenesulfonic acid as a catalyst; then start heating until boiling , There is reflux in the spherical condenser, the temperature is increased to 140 ℃ and reacted for 8 hours to obtain the hyperbranched polymer solution with hydroxyl terminal. Then weigh 43.236 g (0.60 mol) of acrylic acid and 0.778 g of p-toluenesulfonic acid, first add...
Embodiment approach 3
[0037](1) Weigh 45.032g (0.45mol) of succinic anhydride and 47.313g (0.45mol) of diethanolamine, first add the diethanolamine to a three-necked flask with a magnetic stirrer, and then dissolve the succinic anhydride with an appropriate amount of DMAc; Put it into the dropping funnel installed on the three-necked flask of diethanolamine, and stir while dropping. After dropping, raise the temperature to 40℃ and react for 12h. The product of the reaction is AB2Type monomer. In the above system, first add 160 mL of toluene (toluene is a water-carrying agent), then add 2.952 g (0.022 mol) of trimethylolpropane as a nuclear molecule, and add 0.500 g of p-toluenesulfonic acid as a catalyst; then start heating until boiling , There is reflux in the spherical condenser, the temperature is increased to 140 ℃ and reacted for 8 hours to obtain the hyperbranched polymer solution with hydroxyl terminal. Then weigh 36.030 g (0.50 mol) of acrylic acid and 0.742 g of p-toluenesulfonic acid. First, a...
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