AROMATIC COPOLYESTER SULFONES Russian patent published in 2021 - IPC C08G75/20 C08G65/40 C08G75/23 

FIELD: aromatic polyesters.

SUBSTANCE: invention relates to aromatic polyesters, in particular to unsaturated halogen-containing aromatic polyether sulfones, which can be used as structural and film materials in the electronics, electrical engineering, aviation, space, automotive and other industries. The aromatic copolyester sulfones of the formula are described:

, where n=1-10, m=1-10, z=5-20.

EFFECT: expanding the range of fire-resistant aromatic polyesters with increased heat and thermal resistance, as well as high mechanical characteristics.

1 cl, 1 tbl, 5 ex