Branched polyarylene ethers and processes for the preparation thereof
AssigneeXerox Corporation
InventorTimothy P Bender
Life of this patent
Estimating the term…
Abstract
Branched polyarylene ether polymers comprising a plurality of branch points, each branch point being of the formula wherein each Ar is an aryl moiety or an alkylaryl moiety, provided that when Ar is an alkylaryl moiety at least three of the repeating groups are bonded to an aryl portion thereof through the oxygen atoms in the repeating groups, each x, independently of the others, is an integer of 3 or greater, each m, independently of the others, is an integer of 0 or 1, each D, independently of the others, is either (a) another branch point, (b) a terminal group, or (c) of a defined formula. Also disclosed are imaging members containing these polymers.
Claims10
A branched polyarylene ether copolymer which comprises a plurality of branch points, each branch point being of the formula
- wherein each Ar, independently of the others, is an aryl moiety, which may be substituted or unsubstituted, and which may or may not have one or more heteroatoms therein, or an alkylaryl moiety, which may be substituted or unsubstituted, and which may or may not have one or more heteroatoms therein, provided that when Ar is an alkylaryl moiety at least three
- repeating groups are bonded to an aryl portion thereof through the oxygen atoms in the repeating groups, each x, independently of the others, is an integer of 3 or greater, each m, independently of the others, is an integer of 0 or 1, each D, independently of the others, is either (a) another branch point, (b) a terminal group, or (c) of the formula
- wherein each n, independently of the others, is an integer representing the number of repeat monomer units, each A, independently of the others, is
- wherein R is a hydrogen atom, an alkyl group, an aryl group, an arylalkyl group, an alkylaryl group, or mixtures thereof,
- wherein Rx is an alkylene group, an arylalkylene group, an alkylarylene group, or mixtures thereof,
- or mixtures thereof, each B, independently of the others, is
- wherein z is an integer of from 2 to about 20,
- wherein u is an integer of from 1 to about 20,
- wherein w is an integer of from 1 to about 20,
- wherein each o, independently of the other, is an integer of 1, 2, 3, or 4,
- wherein R1 and R2 each, independently of the other, are hydrogen atoms, alkyl groups, aryl groups, arylalkyl groups, alkylaryl groups, or mixtures thereof, and p is an integer of 0 or 1,
- wherein b is an integer of 0 or 1,
- wherein (1) Z is
- wherein c is 0 or 1;
- (2) Ar′ is
- (3) G is an alkyl group selected from alkyl groups containing from about 2 to about 10 carbon atoms;
- (4) Ar″ is
- (5) X is
- wherein s is 0, 1, or 2,
- and (6) q is 0 or 1;
- or mixtures thereof, and wherein
Dependencies are inferred from the claim text.