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US 10,241,427 B2Granted
Polycarbonate copolymer, coating solution, electrophotographic photoreceptor, and electric device
AssigneeIdemitsu Kosan Co., Ltd.
InventorKengo Hirata
Life of this patent
Estimating the term…
Abstract
A polycarbonate copolymer includes a repeating unit A represented by a formula (1) below, chain ends of the PC copolymer being terminated by a monovalent aromatic group or a monovalent fluorine-containing aliphatic group. In the above formula (1), R1 is a hydrogen atom or an alkyl group having 1 to 2 carbon atoms; an average repeating number n is in a range from 6 to 40 and L is an integer of 1 to 4; and when an aromatic ring is substituted by two or more of R1 (L≥2), the two or more of R1 are the same or different from each other.
Claims18
A polycarbonate copolymer comprising:
- a repeating unit A represented by a formula (1) below:
- where, R1 is a hydrogen atom or an alkyl group having 1 to 2 carbon atoms, an average repeating number n is in a range from 6 to 40 and L is an integer of 1 to 4, and when an aromatic ring is substituted by two or more of R1 (L≥2), the two or more of R1 are the same or different from each other;
- a repeating unit B represented by a formula (4) below,
- where, Ar1 is a group represented by a formula (5) below,
- where, R2 and R3 each independently represent a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, a fluoroalkyl group having 1 to 3 carbon atoms or an alkoxy group having 1 to 3 carbon atoms,
- X1 represents —CR4R5—, a substituted or unsubstituted cycloalkylidene group having 5 to 10 carbon atoms or a substituted or unsubstituted arylene group having 6 to 13 carbon atoms,
- R4 and R5 each independently represent a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, a perfluoroalkyl group having 1 to 3 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms, with a proviso that not all of R4 and R5 are hydrogen atoms, and
- q and r are each independently an integer of 1 to 4, the two or more of R2 being the same or different from each other when an aromatic ring is substituted by two or more of R2 (q≥2), and the two or more of R3 being the same or different from each other when an aromatic ring is substituted by two or more of R3 (r≥2);
- and
- a repeating unit C represented by a formula (6) below,
- where, Ar2 is a group represented by a formula (7) below, Ar2 having a skeleton different from that of Ar1,
- where R6 and R7 each independently represent a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, a fluoroalkyl group having 1 to 3 carbon atoms or an alkoxy group having 1 to 3 carbon atoms,
- X2 represents a single bond, —O—, —CO—, or —CR8R9—, and
- R8 and R9 each independently represent a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, a perfluoroalkyl group having 1 to 3 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms;
- and
- wherein the chain ends of the polycarbonate copolymer are terminated by a monovalent aromatic group derived from a phenol represented by formula (9) below or a monovalent fluorine-containing aliphatic group derived from a fluorine-containing alcohol represented by formula (10) below:
- where, in the formula (9), R10 is an alkyl group having 1 to 10 carbon atoms or a fluoroalkyl group having 1 to 10 carbon atoms, and p is an integer of 1 to 3, and
- in the formula (10), Rf is a perfluoroalkyl group having 5 or more carbon atoms and 11 or more fluorine atoms, or a perfluoroalkyloxy group represented by a formula (11) below:
- where, in the formula (11), Rf2 is a linear or branched perfluoroalkyl group having 1 to 6 carbon atoms and m is an integer of 1 to 3.
16 more elements
A polycarbonate copolymer comprising:
- a repeating unit A represented by a formula (1) below:
- where, R1 is a hydrogen atom or an alkyl group having 1 to 2 carbon atoms, an average repeating number n is in a range from 6 to 40 and L is an integer of 1 to 4, and when an aromatic ring is substituted by two or more of R1 (L≥2), the two or more of R1 are the same or different from each other;
- a repeating unit D represented by a formula (18) below,
- where, Ar3 is a group represented by a formula (19) below,
- where, R15 and R16 each independently represent a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, a fluoroalkyl group having 1 to 3 carbon atoms or an alkoxy group having 1 to 3 carbon atoms,
- X3 represents —CR17R18-, a substituted or unsubstituted cycloalkylidene group having 5 to 10 carbon atoms or a substituted or unsubstituted arylene group having 6 to 13 carbon atoms,
- R17 and R18 each independently represent a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, a perfluoroalkyl group having 1 to 3 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms, with a proviso that not all of R17 and R18 are hydrogen atoms, and
- u and v are each independently an integer of 1 to 4, the two or more of R15 being the same or different from each other when an aromatic ring is substituted by two or more of R15 (u≥2), and the two or more of R16 being the same or different from each other when an aromatic ring is substituted by two or more of R16 (v≥2);
- and
- a repeating unit E represented by a formula (20) below,
- where, Ar4 is a group represented by a formula (21), Ar4 having a skeleton different from that of Ar3,
- where, R19 and R20 each independently represent a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, a fluoroalkyl group having 1 to 3 carbon atoms or an alkoxy group having 1 to 3 carbon atoms,
- X4 represents a single bond or —O—,
- w and y are each independently an integer of 1 to 4, the two or more of R19 being the same or different from each other when an aromatic ring is substituted by two or more of R19 (w≥2), the two or more of R20 being the same or different from each other when an aromatic ring is substituted by two or more of R20 (y≥2), and
- z is 0 or 1;
- and
- wherein the chain ends of the polycarbonate copolymer are terminated by a monovalent aromatic group derived from a phenol represented by formula (9) below or a monovalent fluorine-containing aliphatic group derived from a fluorine-containing alcohol represented by formula (10) below:
- where, in the formula (9), R10 is an alkyl group having 1 to 10 carbon atoms or a fluoroalkyl group having 1 to 10 carbon atoms, and p is an integer of 1 to 3, and
- in the formula (10), Rf is a perfluoroalkyl group having 5 or more carbon atoms and 11 or more fluorine atoms, or a perfluoroalkyloxy group represented by a formula (11) below:
- where, in the formula (11), Rf2 is a linear or branched perfluoroalkyl group having 1 to 6 carbon atoms and m is an integer of 1 to 3.
17 more elements
Dependencies are inferred from the claim text.