Polycarbonate resin, molded article, optical member, and lens
US-10604623-B2 · Mar 31, 2020 · US
Polycarbonate copolymer
US2024002595A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024002595-A1 |
| Application number | US-202218265516-A |
| Country | US |
| Kind code | A1 |
| Filing date | Aug 8, 2022 |
| Priority date | Aug 9, 2021 |
| Publication date | Jan 4, 2024 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
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Provided is a polycarbonate copolymer including a repeating unit of the following Chemical Formula 1, where the polycarbonate copolymer can have improved heat resistance:wherein in Chemical Formula 1, R1, R2, n1 and n2 are as defined in the specification.
First claim
Opening claim text (preview).
1 . A polycarbonate copolymer, comprising a repeating unit of Chemical Formula 1: wherein in Chemical Formula 1: R 1 and R 2 are each independently hydrogen, a C 1-10 alkyl, a C 1-10 alkoxy, or halogen; and n1 and n2 are each independently an integer of 0 to 4. 2 . The polycarbonate copolymer according to claim 1 , wherein R 1 is hydrogen. 3 . The polycarbonate copolymer according to claim 1 , wherein each R 2 is independently hydrogen, a C 1-4 alkyl, a C 1-4 alkoxy, or halogen. 4 . The polycarbonate copolymer according to claim 1 , wherein each R 2 is independently hydrogen, methyl, or chloro. 5 . The polycarbonate copolymer according to claim 1 , wherein the repeating unit of Chemical Formula 1 is any one selected from the group consisting of: 6 . The polycarbonate copolymer according to claim 1 , wherein the polycarbonate copolymer further comprises a repeating unit of Chemical Formula 2: wherein in Chemical Formula 2: X is a C 1-10 alkylene that is unsubstituted or substituted with phenyl, a C 3-15 cycloalkylene that is unsubstituted or substituted with a C 1-10 alkyl, O, S, SO, SO 2 , or CO; and R′ 1 to R′ 4 are each independently hydrogen, a C 1-10 alkyl, a C 1-10 alkoxy, or halogen. 7 . The polycarbonate copolymer according to claim 6 , wherein Chemical Formula 2 is the following: 8 . The polycarbonate copolymer according to claim 6 , wherein a weight ratio between the repeating unit of Chemical Formula 1 and the repeating unit of Chemical Formula 2 is 10:90 to 90:10. 9 . The polycarbonate copolymer according to claim 1 , wherein a weight average molecular weight of the polycarbonate copolymer is 10,000 to 100,000. 10 . The polycarbonate copolymer according to claim 1 , wherein a glass transition temperature of the polycarbonate copolymer is 150 to 220° C. 11 . An article comprising the polycarbonate copolymer according to claim 1 .
Assignees
Inventors
Classifications
Compositions of polycarbonates; Compositions of derivatives of polycarbonates · CPC title
Aliphatic-aromatic or araliphatic polycarbonates · CPC title
and phenols · CPC title
- C08G64/12Primary
containing nitrogen · CPC title
and phenols · CPC title
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Frequently asked questions
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- What does patent US2024002595A1 cover?
- Provided is a polycarbonate copolymer including a repeating unit of the following Chemical Formula 1, where the polycarbonate copolymer can have improved heat resistance:wherein in Chemical Formula 1, R1, R2, n1 and n2 are as defined in the specification.
- Who is the assignee on this patent?
- Lg Chemical Ltd, Yonsei Univ Univ Industry Foundation Uif
- What technology area does this patent fall under?
- Primary CPC classification C08G64/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jan 04 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).