# US 8,785,091 B1 · Polyarylatecarbonate containing photoconductors > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,785,091 B1 - Document ID: US8785091B1 - Status: Granted - Kind: B1 - Application number: 13/862,399 - Filed: 2013-04-13 - Granted: 2014-07-22 - Earliest claimed: 2013-04-13 - Assignees: Xerox Corporation - Applicants: Xerox Corporation - Inventors: Jin Wu; Kenny-Tuan T Dinh; Terry L Street; Robert W Hedrick; Linda L Ferrarese; Than Sorn; Lanhui Zhang; Lin Ma; Stanley J Pietrzykowski, Jr. - Web page: https://patentgrep.com/patent/US8785091B1 ## CPC - G03G 5/061443: {benzidine} - G03G 5/0564: {Polycarbonates} - G03G 5/061446: {terphenyl-diamine} - G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY ## Abstract A photoconductor that includes, for example, a supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional adhesive layer, a photogenerating layer, a charge transport layer, and an optional protective coating, and where the charge transport layer contains a mixture of a charge transport component and a polyarylatecarbonate. ## Claims ### Claim 1 A photoconductor comprising a a supporting substrate, a photogenerating layer and a charge transport layer that includes a charge transport compound, and a polyarylatecarbonate copolymer selected from the group consisting of those represented by the following formulas/structures and mixtures thereof, wherein m and n represent the mol percents of each segment with m being from about 60 to about 95 mol percent and n being from about 5 to about 40 mol percent and wherein the total thereof is about mol 100 percent. ### Claim 2 (depends on 1) A photoconductor in accordance with claim 1 wherein said polyarylatecarbonate copolymer is represented by the following formulas/structures wherein m is from about 75 to about 85 mol percent, n is from about 15 to about 25 mol percent with the total of m and n being equal to about 100 mol percent. ### Claim 3 (depends on 1) A photoconductor in accordance with claim 1 wherein m is from about 60 to about 90 mol percent, and n is from about 10 to about 40 mol percent. ### Claim 4 (depends on 1) A photoconductor in accordance with claim 1 wherein m is from about 65 to about 85 mol percent, and n is from about 15 to about 35 mol percent. ### Claim 5 (depends on 1) A photoconductor in accordance with claim 1 wherein said copolymer is represented by the following formulas/structures wherein m is from about 75 to about 85 mole percent, and n is from about 15 to about 25 mol percent. ### Claim 6 (depends on 1) A photoconductor in accordance with claim 1 wherein said copolymer is represented by the following formulas/structures wherein m is from about 75 to about 85 mole percent, and n is from about 15 to about 25 mol percent. ### Claim 7 (depends on 1) A photoconductor in accordance with claim 1 wherein said copolymer possesses a weight average molecular weight of from about 40,000 to about 70,000, and a number average molecular weight of from about 30,000 to about 60,000 as determined by GPC analysis. ### Claim 8 (depends on 1) A photoconductor in accordance with claim 1 wherein said copolymer is present in an amount of from about 45 to about 80 weight percent based on the solids. ### Claim 9 (depends on 1) A photoconductor in accordance with claim 1 wherein said copolymer is present in an amount of from about 50 to about 70 weight percent based on the solids. ### Claim 10 (depends on 1) A photoconductor in accordance with claim 1 wherein said charge transport layer is comprised of a first charge transport layer in contact with said photogenerating layer, and a second charge transport layer in contact with said first charge transport layer, and wherein said copolymer is present in said second charge transport layer. ### Claim 11 (depends on 1) A photoconductor in accordance with claim 1 wherein said charge transport compound is represented by at least one of wherein X, Y, and Z are independently selected from the group consisting of alkyl, alkoxy, aryl, halogen, and mixtures thereof. ### Claim 12 (depends on 1) A photoconductor in accordance with claim 1 wherein said charge transport compound is selected from the group consisting of N,N′-bis(methylphenyl)-1,1-biphenyl-4,4′-diamine, tetra-p-tolyl-biphenyl-4,4′-diamine, N,N′-diphenyl-N,N′-bis(4-methoxyphenyl)-1,1-biphenyl-4,4′-diamine, N,N′-bis(4-butylphenyl)-N,N′-di-p-tolyl-[p-terphenyl]-4,4′-diamine, N,N′-bis(4-butylphenyl)-N,N′-di-m-tolyl-[p-terphenyl]-4,4′-diamine, N,N′-bis(4-butylphenyl)-N,N′-di-o-tolyl-[p-terphenyl]-4,4′-diamine, N,N′-bis(4-butylphenyl)-N,N′-bis-(4-isopropylphenyl)-[p-terphenyl]-4,4′-diamine, N,N′-bis(4-butylphenyl)-N,N′-bis-(2-ethyl-6-methylphenyl)-[p-terphenyl]-4,4′-diamine, N,N′-bis(4-butylphenyl)-N,N′-bis-(2,5-dimethylphenyl)-[p-terphenyl]-4,4′-diamine, and N,N′-diphenyl-N,N′-bis(3-chlorophenyl)-[p-terphenyl]-4,4′-diamine. ### Claim 13 (depends on 1) A photoconductor in accordance with claim 1 wherein said photogenerating layer is comprised of at least one photogenerating pigment. ### Claim 14 (depends on 1) A photoconductor in accordance with claim 1 wherein said photogenerating layer is comprised of at least one of a titanyl phthalocyanine, a hydroxygallium phthalocyanine, a halogallium phthalocyanine, a bisperylene, and mixtures thereof. ### Claim 15 A photoconductor comprised in sequence of a supporting substrate, a hole blocking layer thereover, a photogenerating layer, and a charge transport layer comprised of a mixture of an aryl amine hole transport compound and a polyarylatecarbonate as represented by the following formulas/structures wherein m is from about 65 to about 85 mol percent, and n is from about 15 to about 35 mol percent, and the total thereof is 100 mol percent. ### Claim 16 (depends on 15) A photoconductor in accordance with claim 15 wherein said aryl amine is N,N′-diphenyl-N,N-bis(3-methylphenyl)-1,1′-biphenyl-4,4′-diamine; said m is from about 75 to about 85 mol percent, and said n is from about 15 to about 25 mol percent. ### Claim 17 (depends on 15) A photoconductor in accordance with claim 15 wherein said hole blocking layer is comprised of an aminosilane of at least one of 3-aminopropyl triethoxysilane, N,N-dimethyl-3-aminopropyl triethoxysilane, N-phenylaminopropyl trimethoxysilane, triethoxysilylpropylethylene diamine, trimethoxysilylpropylethylene diamine, trimethoxysilylpropyldiethylene triamine, N-aminoethyl-3-aminopropyl trimethoxysilane, N-2-aminoethyl-3-aminopropyl trimethoxysilane, N-2-aminoethyl-3-aminopropyl tris(ethylethoxy)silane, p-aminophenyl trimethoxysilane, N,N′-dimethyl-3-aminopropyl triethoxysilane, 3-aminopropylmethyl diethoxysilane, 3-aminopropyl trimethoxysilane, N-methylaminopropyl triethoxysilane, methyl[2-(3-trimethoxysilylpropylamino)ethylamino]-3-proprionate, (N,N′-dimethyl 3-amino)propyl triethoxysilane, N,N-dimethylaminophenyl triethoxysilane, trimethoxysilyl propyldiethylene triamine, and mixtures thereof. ### Claim 18 A photoconductor comprising a supporting substrate, a hole blocking layer thereover, a photogenerating layer, and a hole transport layer comprised of a mixture of a hole transport compound and a polyarylatecarbonate copolymer selected from the group consisting of those represented by the following formulas/structures and mixtures thereof, wherein m and n represent the mol percents of each segment with m being from about 60 to about 95 mol percent and n being from about 5 to about 40 mol percent and wherein the total thereof is about mol 100 percent.