This invention relates to a polyaromatic cyanate which corresponds to the formula
wherein
Ar is an aromatic radical;
B is a C7-20 polycyclic aliphatic radical;
D is independently in each occurrence any non-active hydrogen-containing substituent;
q, r and s are independently in each occurrence the integers 0, 1, 2 or 3; with the proviso that the sum of q. 4 and s is greater than or equal to 2;
t is independently in each occurrence an integer of between about 0 and 4 inclusive; and
x is a number between about 0 and 5 inclusive.
Another aspect of this invention is a novel polytriazine which comprises the reaction product of the polyaromatic cyanate esters of this invention. The novel polytriazines may further comprise the reaction product of the novel polyaromatic cyanates of this invention in admixture with other cyanates known in the art as useful for the preparation of polytriazines.
本发明涉及一种多芳香族
氰酸酯,其
化学式为
式中
Ar 是芳香族基
B 是 C7-20 多环脂肪族基
D是独立存在的任何非活性含氢取代基;
q、r 和 s 独立地在每次出现时均为整数 0、1、2 或 3;但 q、4 和 s 之和大于或等于 2;
t 独立地在每次出现时都是介于约 0 和 4 之间的整数;以及
x 是介于 0 和 5 之间的数字。
本发明的另一方面是一种新型聚三嗪,它包括本发明的多芳基
氰酸酯的反应产物。新型聚三嗪可进一步包括本发明的新型多芳香族
氰酸酯的反应产物与本领域已知的可用于制备聚三嗪的其它
氰酸酯的混合物。