"4,4'-bis(phthalimido)diphenyl sulfone compounds, processes...

Details "4,4'-bis(phthalimido)diphenyl sulfone compounds, processes... "4,4'-bis(phthalimido)diphenyl sulfone compounds, processes...

C - Chemistry, Metallurgy

07

D

400/7077, 260/30

C07D 209/48 (2006.01) C08K 5/41 (2006.01)

Patent

CA 1330563

ABSTRACT OF THE DISCLOSURE A 4,4'-bis(phthalimido)diphenyl sulfone compound having the formula: Image (I) wherein X is a halogen atom, k = 0 to 4, ? = 0 to 4, m = 0 to 4 and n = 0 to 4, provided k+?+m+n>1. (I) was prepared by reacting a phtalic anhydride of the formula: Image (2) with a 4,4'-diaminodiphenyl sulfone of the formula: Image (3) (I) are useful as flame retardants for polymers having high melting points, and such polymers comprising (I) accomplish excellent weather resistance and heat resistance.

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