Manufacture of crystallizable polymeric phenylene ether sulphone ketones
AssigneeImperial Chemical Industries PLC
InventorMichael Edward Benet Jones
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Abstract
Random or block copolymers having repeating units of the structures ##STR1## are crystallizable, in contrast to the regular alternating copolymer ##STR2## WHICH IS AMORPHOUS, AND THEY ARE USEFUL AS THERMOPLASTIC, FILM- AND FIBER-FORMING MATERIALS. They may be made by copolymerizing 4-phenoxyphenylsulphonyl and 4-phenoxybenzoyl chlorides in the presence of ferric chloride, or by copolymerizing alkali metal salts of 4-(4-chlorophenylsulphonyl) phenol and 4-(4-chlorobenzoyl) phenol.
Claims3
A crystallizable copolymer containing phenylene, ether, sulphone and ketone groups in the polymer chain, which is formed of repeating units having the structure --Ar--SO.sub.2 -- and repeating units of the structure --Ar--CO--, where Ar is a divalent aromatic residue derived from a compound having the structure:
- ##STR9## by removing the hydrogen atoms which are para to the oxygen atoms.
Dependencies are inferred from the claim text.