Photoconductive composition of an aldehyde condensate

A polymeric composition comprising a block copolymer having nonphotoconductive segments and photoconductive segments having recurring structural units of the formula:

• ##EQU5## wherein R is hydrogen or alkyl of 1-4 carbon atoms;
• R is alkyl of 1-4 carbon atoms, cycloalkyl, phenyl, or alkyl substituted phenyl;
• B is phenylene or a diradical of a fused aromatic nucleus having up to four benzene rings;
• A.sub.r is selected from the group consisting of naphthalene, anthracene, pyrene, perylene, julolidine, carbazole and their respective homologues;
• x is 0 or 1;
• y is 0 or 1;
• and
• n is at least 2.

A polymeric composition comprising a preformed nonphotoconductive polymer backbone and polymeric grafts appended therefrom which have recurring structural units of the formula:

• ##EQU6## wherein R is hydrogen or alkyl of 1-4 carbon atoms;
• R' is alkyl of 1-4 carbon atoms, cycloalkyl, phenyl, or alkyl substituted phenyl;
• B is phenylene or a diradical of a fused aromatic nucleus having up to four benzene rings;
• A.sub.r is selected from the group consisting of naphthalene, anthracene, pyrene, perylene, julolidine, carbazole and their respective homologues;
• x is 0 or 1;
• y is 0 or 1;
• and
• n is at least 2.

A polymeric composition having recurring structural units of the formula:

• ##SPC1##
• wherein
• R is hydrogen or alkyl of 1-4 carbon atoms;
• R' is alkyl of 1-4 carbon atoms, cycloalkyl, phenyl, or alkyl substituted phenyl;
• A.sub.r is selected from the group consisting of naphthalene, anthracene, pyrene, perylene, julolidine, carbazole and their respective homologues;
• x is 0 or 1;
• and
• n is at least 2.

A polymeric composition comprising a block copolymer having nonphotoconductive segments and photoconductive segments having recurring structural units of the formula:

• ##SPC2##
• wherein
• R is hydrogen or alkyl of 1-4 carbon atoms;
• R' is alkyl of 1-4 carbon atoms, cycloalkyl, phenyl, or alkyl substituted phenyl;
• A.sub.r is selected from the group consisting of naphthalene, anthracene, pyrene, perylene, julolidine, carbazole and their respective homologues;
• x is 0 or 1;
• and
• n is at least 2.

A polymeric composition comprising a preformed nonphotoconductive polymer backbone and polymeric graft appended therefrom which have recurring structural units of the formula:

• ##SPC3##
• wherein
• R is hydrogen or alkyl of 1-4 carbon atoms;
• R' is alkyl of 1-4 carbon atoms, cycloalkyl, phenyl, or alkyl substituted phenyl;
• A.sub.r is selected from the group consisting of naphthalene, anthracene, pyrene, perylene, julolidine, carbazole and their respective homologues;
• x is 0 or 1;
• and
• n is at least 2.

A polymeric composition having recurring structural units of the formula:

• ##SPC4##
• wherein
• R is hydrogen or alkyl of 1-4 carbon atoms;
• R' is alkyl of 1-4 carbon atoms, cycloalkyl, phenyl, or alkyl substituted phenyl;
• A.sub.r is selected from the group consisting of naphthalene, anthracene, pyrene, perylene, julolidine, carbazole and their respective homologues;
• x is 0 or 1;
• and
• n is at least 2.

A polymeric composition comprising a block copolymer having nonphotoconductive segments and photoconductive segments having recurring structural units of the formula:

• ##SPC5##
• wherein
• R is hydrogen or alkyl of 1-4 carbon atoms;
• R' is alkyl of 1-4 carbon atoms, cycloalkyl, phenyl, or alkyl substituted phenyl;
• A.sub.r is selected from the group consisting of naphthalene, anthracene, pyrene, perylene, julolidine, carbazole and their respective homologues;
• x is 0 or 1;
• and
• n is at least 2.

A polymeric composition comprising a preformed nonphotoconductive polymer backbone and polymeric graft appended therefrom which have recurring structural units of the formula:

• ##SPC6##
• wherein
• R is hydrogen or alkyl of 1-4 carbon atoms;
• R' is alkyl of 1-4 carbon atoms, cycloalkyl, phenyl, or alkyl substituted phenyl;
• A.sub.r is selected from the group consisting of naphthalene, anthracene, pyrene, perylene, julolidine, carbazole and their respective homologues;
• x is 0 or 1;
• and
• n is at least 2.