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US 12,312,322 B2Granted
Diol compound, polycarbonate, and preparation method thereof
AssigneeLG Chem, Ltd.
InventorsDayoung Lee, Ki Jae Lee, Mooho Hong, Young Young Hwang, Youngwook Son, Daehyeon Hwang
Life of this patent
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Abstract
Provided are a diol compound which may be used to prepare a polycarbonate having excellent weather resistance, hardness, heat resistance, transparency, impact resistance, etc. while having excellent mechanical properties, a polycarbonate prepared by using the same, and a preparation method thereof.
Claims12
A polycarbonate comprising:
- a repeating unit derived from a diol compound represented by Chemical Formula 1;
- a repeating unit derived from a compound represented by Chemical Formula 2;
- and
- a carbonate precursor-derived repeating unit:
- wherein, in Chemical Formula 1,
- X is —O— or —S—,
- R is C6-60 arylene unsubstituted or substituted with C1-10 alkyl, and
- n is an integer of 1 to 100,
- wherein, in Chemical Formula 2,
- R1 to R4 are each independently hydrogen, C1-10 alkyl, C1-10 alkoxy, or halogen,
- Z is C1-10 alkylene unsubstituted or substituted with phenyl, C3-15 cycloalkylene unsubstituted or substituted with C1-10 alkyl, O, S, SO, SO2, or CO.
8 more elements
A method of preparing a polycarbonate, the method comprising a step of:
- polymerizing a composition including a diol compound represented by Chemical Formula 1, an aromatic diol compound represented by Chemical Formula 2, and a carbonate precursor:
- wherein, in Chemical Formula 1,
- X is —O— or —S—,
- R is C6-60 arylene unsubstituted or substituted with C1-10 alkyl, and
- n is an integer of 1 to 100,
- wherein, in Chemical Formula 2,
- R1 to R4 are each independently hydrogen, C1-10 alkyl, C1-10 alkoxy, or halogen, and
- Z is C1-10 alkylene unsubstituted or substituted with phenyl, C3-15 cycloalkylene unsubstituted or substituted with C1-10 alkyl, O, S, SO, SO2, or CO.
5 more elements
Dependencies are inferred from the claim text.