Benzoxazine resin, preparation method thereof and resin composition
A technology of resin composition and benzoxazine, which is applied in the field of benzoxazine resin and its preparation method and resin composition, can solve the problems of large dielectric loss of printed circuit boards and inability to meet the requirements of high-frequency printed circuit boards, etc. , to achieve good heat resistance and dielectric properties
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Synthetic example 1
[0056] A temperature controller, heating pack, electric stirrer, and condenser were set up on a four-neck glass reaction tank with a capacity of one liter. 76.5 g (including 0.45 moles of hydroxyl groups) of dicyclopentadiene phenol resin, 63 g (including 0.55 moles of hydroxyl groups) of phenolic methane, 31.6 g (including 0.45 moles of amine groups) of methylene chloride were added to the four-neck glass reaction tank. Xylylenediamine, 66 grams (containing 0.55 moles of amine groups) of 2,6-dimethylaniline, and 460 grams of toluene (solvent), and the four-neck glass reaction tank was heated to 60 to 100 ° C to allow the reaction material dissolves.
[0057] Next, 67 g (2.1 mol) of polyoxymethylene is added to the four-neck glass reaction tank, and a condensation polymerization reaction is performed at a temperature of 60 to 100°C for 1 to 5 hours. After the reaction is completed, the temperature is maintained at a temperature of 60 to 100 ° C for 4 to 10 hours, and then hea...
Synthetic example 2
[0060] A temperature controller, heating pack, electric stirrer, and condenser were set up on a four-neck glass reaction tank with a capacity of one liter. 31 g (including 0.18 moles of hydroxyl groups) of dicyclopentadiene phenol resin, 93.5 g (including 0.82 moles of hydroxyl groups) of phenolic methane, and 31.6 g (including 0.45 moles of amine groups) of phenol were added to the four-neck glass reaction tank. Xylylenediamine, 66 grams (containing 0.55 moles of amine groups) of 2,6-dimethylaniline, and 460 grams of toluene (solvent), and the four-neck glass reaction tank was heated to 60 to 100 ° C to allow the reaction material dissolves.
[0061] Next, 67.3 g (2.1 mol) of polyoxymethylene was added to the four-neck glass reaction tank, and a condensation polymerization reaction was performed at a temperature of 60 to 100° C. for 1 to 5 hours. After the reaction is completed, the temperature is maintained at a temperature of 60 to 100 ° C for 4 to 10 hours, and then the t...
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