Aggregate photoconductive compositions and elements containing a styryl amino group containing photoconductor

Claim 2

AN AGGREGATE PHOTOCONDUTIVE COMPOSITION COMPRISING (A) A CONTINUOUS ELECTRICALLY INSULATING POLYMER PHASE, SAID POLYMER HAVING AN ALKYLIDENE DIARRYLENE MOIETY IN A RECURRING UNIT, (B) A DISCONTINUOUS PHASE COMPRISING A CO-CRYSTALLINE COMPLEX OF (I) A PYRYLIUM SALT SELECTED FROM THE GROUP CONSISTING OF THIAPYRYLIUM, SELENAPYRYLIUM, AND PYRYLIUM DYE SALTS AND (II) A CARBONATE POLYMER HAVING AN ALKYLIDENE DIARRYLENE MOIETY IN A RECURRING UNIT, SAID DISCONTINUOUS PHASE DISPERSED IN SAID CONTINUOUS PHASE, (C) AT LEAST ONE NON-BLUE LIGHT ABSOBING ORGANIC PHOTOCONDUCTOR IN SOLID SOLUTION WITH THE CONTINUOUS PHASE OF SAID COMPOSITION, AND (D) FROM ABOUT 0.1 TO ABOUT 15 WEIGHT PERCENT BASED ON THE DRY WEIGHT OF SAID COMPOSITION OF A COMPOUND HAVING THE FORMULA

Claim 3

A photoconductive composition as described in claim 1 wherein said pyrylium salt has the formula:

Claim 4

A photoconductive composition as described in claim 1 wherein said carbonate polymer contains the following moiety in a recurring unit:

Claim 5

An aggregate photoconductive composition comprising (a) a continuous electrically insulating carbonate polymer phase, said polymer having an alkylidene diarylene moiety in a recurring unit, (b) a discontinuous phase comprising a co-crystalline complex of (i) a 2,4,6-substituted thiapyrylium dye salt and (ii) a carbonate polymer having an alkylidene diarylene moiety in a recurring unit, said discontinuous phase dispersed in said continuous phase, (c) from about 25 to about 40 weight percent based on the dry weight of said composition of at least one non-blue light absorbing organic photoconductor in solid solution with the continuous phase of said composition, and (d) from about 5 to about 10 weight percent based on the dry weight of said composition of a compound having the formula

Claim 6

An aggregate photoconductive composition comprising (a) a continuous electrically insulating carbonate polymer phase, said polymer having an alkylidene diarylene moiety in a recurring unit, (b) a discontinuous phase comprising a co-crystalline complex of (i) a 2,4,6-substituted thiapyrylium dye salt and (ii) a carbonate polymer having an alkylidene diarylene moiety in a recurring unit, said discontinuous phase dispersed in said continuous phase, (c) from about 25 to about 40 weight percent based on the dry weight of said composition of at least one non-blue light absorbing organic photoconductor in solid solution with the continuous phase of said composition, and (d) from about 5 to about 10 weight percent based on the dry weight of said composition of a compound having the formula

Claim 7

An aggregate photoconductive composition as described in claim 4 wherein R1, R2, R3, and R4 are each phenyl radicals or alkyl-substituted phenyl radicals and Ar2 is a phenyl radical or an alkyl-substituted phenyl radical, said alkyl substituents having 1 or 2 carbon atoms.

Claim 8

An aggregate photoconductive composition as described in claim 4 wherein said compound is selected from the group consisting of 4-diphenylamino-4''-(4-diphenylamino)styryl)stilbene; 4-di-(p-tolylamino)-4''-(4-(di-p-tolylamino)styryl)stilbene; 4-di-p-tolylamino)2'', 3'', 5'', 6''-tetramethyl-4''-(4-(di-p-tolylamino)styryl)stilbene; 4-di-(p-tolylamino)-2''-(4-(di-p-tolylamino)styryl)stilbene; 4-di-(p-tolylamino)-2'',4''-dimethyl-5''-(4-(di-p-tolylamino)styryl)-stilbene; and 1,4-bis(4-N-ethyl-N-p-tolylaminostyryl)benzene.

Claim 9

An aggregate photoconductive composition as described in claim 4 wherein said organic photoconductor is a polyarylalkane photoconductor or an arylamine photoconductor.

Claim 10

An aggregate photoconductive composition as described in claim 4 wherein said organic photoconductor is a polyarylalkane photoconductor.

Claim 11

In an electrophotographic element comprising a conductive support and a photoconductive layer coated over said support, the improvement wherein said photoconductive layer comprises the photoconductive composition of claim 1.

Claim 12

In an electrophotographic element comprising a conductive support and a photoconductive layer coated over said support, the improvement wherein said photoconductive layer comprises the photoconductive composition of claim 4.

Claim 13

In an electrophotographic process wherein an electrostatic charge pattern is formed on a photoconductive element comprised of an electrically conducting support having coated thereover a layer of a photoconductive composition, the improvement wherein said photoconductive composition is a composition as described in claim 4.