Poly(aryl ether ketone) block copolymers
AssigneeAmoco Corporation
InventorsRobert A. Clendinning, James E. Harris, George T. Kwiatkowski, Lee P. McMaster, Markus Matzner, Paul A. Winslow
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Abstract
Described are crystalline block copolymers displaying high glass transition temperatures, excellent mechanical properties, excellent chemical and thermal stability, and good melt processability. These block polymers contain segments of crystalline poly(aryl ether ketones).
Claims28
A crystalline, tough poly(aryl ether ketone) solution polymerized block polymer comprising a block of a polymer containing ether groups joined to keto groups through units of at least one formulae selected from the group consisting of ##STR45## which block is bonded to another block through one or more of an ether group, a keto group or a divalent chain extending single or oligomeric unit, with the proviso that when the blocks are identical, then the coupling group is copolymeric.
A crystalline tough poly(aryl ether ketone) block or chain extended polymer having the formula ##STR46## wherein A and B are a crystalline poly(aryl ether ketone), a and b are integers of at least 2;
- c is an integer of 1 or greater;
- d is 0 or 1;
- X is either a monomeric --Ar'"--O-- unit where Ar'" is a divalent arylene radical, or an oligomeric radical, with the proviso that if either A and B contains the units ##STR47## a or b must be at least 4;
- and with the additional proviso that when A and B are identical, X is an oligomeric radical.
Dependencies are inferred from the claim text.