Benzoxazine colophony based on renewable resources, its composition and preparing method thereof

[0022] Example 1

[0023] Add 41 g (0.25 mol) of eugenol and 21.5 g (0.125 mol) of decane diamine into 200 ml of toluene to completely dissolve it, add 30 g (0.5 mol) of paraformaldehyde under stirring in an ice-water bath, and stir vigorously at room temperature to make The reactants are evenly mixed and placed in an oil bath to reflux for 2 hours. After the reaction, add lye and stir and mix, then pour it into a separatory funnel to separate the product, continue to wash with lye, then wash with deionized water until it is neutral, pour it into a porcelain dish and vacuum dry for 24h to obtain a reddish-brown solid. The yield is 90%. Subsequent to various characterization tests on the product, the results proved to be the desired product.

[0024] Example 2

[0025] As described in Example 1, except that eugenol was replaced with 31 grams of guaiacol (0.25 mol), the product obtained was a pale yellow solid with a yield of 96%. Subsequently, various characterization tests were performed on the product, and the results showed that it was the desired product.

[0026] Example 3

[0027] As described in Example 1, except that eugenol was replaced with 75.1 grams of cardanol (0.25 mol), the synthesized product was a white solid with a yield of 94%. Various characterization tests were performed on the product, and the results showed that it was the desired product.