Polycarbonate resin
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsNoriyuki KATO, Mitsuteru KONDO, Munenori SHIRATAKE, Kentaro ISHIHARA, Koji HIROSE, Shinya IKEDA
Life of this patent
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Abstract
The present invention provides a polycarbonate resin containing a repeating unit represented by formula (A) in the amount of 1-99.5 wt %, the polycarbonate resin also containing an oligomer having a specific structure in a total amount that constitutes a content of 2.5 wt % or lower. (In formula (A), R1 and R2 each independently represent a hydrogen atom, a phenyl group, a C1-6 alkyl group, or a C1-6 alkyloxy group).
Claims10
A polycarbonate resin comprising a repeating unit represented by Formula (A) below in an amount of 1-99.5 wt %, wherein oligomers represented by Formulae (1)-(4) below are contained in a total volume of 2.5 wt % or less:
- (in Formula (A), R1 and R2 each independently represent a hydrogen atom, a phenyl group, a C1-6 alkyl group or a C1-6 alkyloxy group)
- (in Formula (1), R1 and R2 each independently represent a hydrogen atom, a phenyl group, a C1-6 alkyl group or a C1-6 alkyloxy group, and n represents an integer of 1-4)
- (in Formula (2), R1 and R2 each independently represent a hydrogen atom, a phenyl group, a C1-6 alkyl group or a C1-6 alkyloxy group, and m represents an integer or 1-6)
- (in Formula (3), R1 and R2 each independently represent a hydrogen atom, a phenyl group, a C1-6 alkyl group or a C1-6 alkyloxy group, and l represents an integer of 1-5)
- (in Formula (4), R1 and R2 each independently represent a hydrogen atom, a phenyl group, a C1-6 alkyl group or a C1-6 alkyloxy group, and k represents an integer of 2-4).
A method for adjusting a total volume of oligomers represented by Formulae (1)-(4) below contained in a polycarbonate resin to be 2.5 wt % or less, wherein the polycarbonate resin contains a repeating unit represented by Formula (A) below in an amount of 1-99.5 wt %:
- (in Formula (A), R1 and R2 each independently represent a hydrogen atom, a phenyl group, a C1-6 alkyl group or a C1-6 alkyloxy group)
- (in Formula (1), R1 and R2 each independently represent a hydrogen atom, a phenyl group, a C1-6 alkyl group or a C1-6 alkyloxy group, and n represents an integer of 1-4)
- (in Formula (2), R1 and R2 each independently represent a hydrogen atom, a phenyl group, a C1-6 alkyl group or a C1-6 alkyloxy group, and m represents an integer or 1-6)
- (in Formula (3), R1 and R2 each independently represent a hydrogen atom, a phenyl group, a C1-6 alkyl group or a C1-6 alkyloxy group, and l represents an integer of 1-5)
- (in Formula (4), R1 and R2 each independently represent a hydrogen atom, a phenyl group, a C1-6 alkyl group or a C1-6 alkyloxy group, and k represents an integer of 2-4).
Dependencies are inferred from the claim text.