Polycarbonate/polyorganosiloxane copolymer and resin composition including said copolymer

A polycarbonate-polyorganosiloxane copolymer, comprising:

• a polyorganosiloxane block (A-1) including at least one selected from the group consisting of structural units represented by the following formulae (1-1) to (1-3);
• and
• a polycarbonate block (A-2) formed of a repeating unit represented by the following formula (2),
• wherein the polycarbonate-polyorganosiloxane copolymer satisfies the following condition (A) or (B):
• condition (A):
• a hexane extraction amount of the polycarbonate-polyorganosiloxane copolymer is 150 ppm by mass or less;
• and
• condition (B):
• average weights of polyorganosiloxane blocks in polycarbonate-polyorganosiloxane copolymers obtained by separating the polycarbonate-polyorganosiloxane copolymer with a gel permeation chromatograph satisfy the following expression (B1):
• 0.3≤[POS-Mh]/[POS-M1]≤3 (B1)
• wherein
• in the expression (B1), [POS-Mh] represents a weight fraction of a polyorganosiloxane block in a polycarbonate-polyorganosiloxane copolymer obtained by fractionating a component corresponding to a retention time range of from T1 to T2 with the gel permeation chromatograph, and [POS-M1] represents a weight fraction of a polyorganosiloxane block in a polycarbonate-polyorganosiloxane copolymer obtained by fractionating a component corresponding to a retention time range of from T2 to T3 with the gel permeation chromatograph:
• T1:
• a retention time at which a peak top in a gel permeation chromatogram of a standard polystyrene having a ratio Mw/Mn of 1.01 and a Mw of 98,900 is positioned;
• T2:
• a retention time at which a peak top in a gel permeation chromatogram of a standard polystyrene having a ratio Mw/Mn of 1.01 and a Mw of 13,700 is positioned;
• and
• T3:
• a retention time at which a peak top in a gel permeation chromatogram of a standard polystyrene having a ratio Mw/Mn of 1.03 and a Mw of 3,120 is positioned:
• wherein R1 to R4 may be identical to or different from each other, and each independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an aryl group having 6 to 12 carbon atoms, or an alkylaryl group whose alkyl group moiety has 1 to 10 carbon atoms, R6 represents an arylene group having 6 to 20 carbon atoms, an alkylene group having 1 to 10 carbon atoms, or an alkylarylene group whose alkyl group moiety has 1 to 10 carbon atoms, and may contain, as a functional group, —O—, —COO—, —CO—, —S—, —NH—, or —NR111—, a plurality of R8s may be identical to or different from each other, and each independently represent an arylene group having 6 to 20 carbon atoms, an alkylene group having 2 to 10 carbon atoms, a branched alkylene group having 3 to 10 carbon atoms, or an alkylarylene group whose alkyl group moiety has 1 to 10 carbon atoms, and may each contain, as a functional group, —O—, —COO—, —CO—, —S—, —NH—, or —NR111—, R111 represents an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 10 carbon atoms, “z” represents 1, “a” represents an integer of from 2 to 500, “b” represents an integer of from 2 to 200,
• R5 represents an arylene group having 6 to 20 carbon atoms, an alkylene group having 1 to 10 carbon atoms, or an alkylarylene group whose alkyl group moiety has 1 to 10 carbon atoms, and may contain, as a functional group, —O—, —COO—, —CO—, —S—, —NH—, or —NR111—, R7 represents an arylene group having 6 to 20 carbon atoms, an alkylene group having 2 to 10 carbon atoms, a branched alkylene group having 3 to 10 carbon atoms, or an alkylarylene group whose alkyl group moiety has 1 to 10 carbon atoms, and may contain, as a functional group, —O—, —COO—, —CO—, —S—, —NH—, or —NR111—, R111 represents an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 10 carbon atoms, “z1” represents 0 or 1, “b1” represents an integer of from 2 to 200, and β represents a divalent group derived from a diisocyanate compound, or a divalent group derived from a dicarboxylic acid or a dicarboxylic acid halide, and
• R10 represents a divalent aliphatic hydrocarbon group having 2 to 40 carbon atoms or a divalent alicyclic hydrocarbon group having 3 to 40 carbon atoms, or a divalent aromatic hydrocarbon group having 6 to 20 carbon atoms, and may be substituted with a substituent, the divalent aliphatic hydrocarbon group, the divalent alicyclic hydrocarbon group, or the divalent aromatic hydrocarbon group may contain at least one heteroatom selected from an oxygen atom, a nitrogen atom, and a sulfur atom, or at least one halogen atom selected from a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom, and “y” represents an integer of from 10 to 500.