| 摘要 |
<p>A triazine derivative of the formula <CHEM> wherein R is an alkyl group or an aryl group, X is S, Se or Te, n or m is 0, or each is an integer of from 1 to 3, the total sum of n + m not being greater than 3, and p or q is 0, or each is an integer of from 1 to 3, the total sum of p + q not being greater than 3. The triazines may be used in photopolymerizable compositions.</p> |
