FLAME RETARDANT AND PHOSPHOROUS-MODIFIED HARDENER

摘要

PURPOSE: A phosphorous-modified flame-retarding hardener is provided to remarkably improve heat resistance, thermal stability, low absorption, electric performance, high adhesion, and toughness. CONSTITUTION: A phosphorous-modified flame-retarding hardener is indicated in chemical formula 1. In the chemical formula 1, A is marked with chemical formula 2 or 3. In the chemical formula 1-3, a is an integer from 0-4, and b is 1. The combination order of each structure unit according to a and b can be randomly changed. Specifically when each structure unit according to the a and b are A and B, such b is 1 so that the B can independently exist, or can be randomly combined with AAB, ABA, AB, BAAA, AABAA, etc. Such a is an integer from 0-4 so that the A is 0-4.