{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9850344","patent":{"patent_number":"US-9850344","title":"Polycarbonate resin and optical film","assignee":null,"inventors":[],"filing_date":"2015-03-13T00:00:00.000Z","publication_date":"2017-12-26T00:00:00.000Z","cpc_codes":["G02F","G02F"],"num_claims":8,"abstract":"Provided are a polycarbonate resin and an optical film formed therefrom, having wavelength dispersion characteristics close to the ideal broad bandwidth, excellent durable stability and flexibility, high retardation developability, a low photoelastic constant, and excellent melt processability. The polycarbonate resin comprises a unit (A) represented by the following formula, wherein R1 and R2 each independently represent a hydrogen atom, hydrocarbon group having 1 to 10 carbon atoms optionally containing an aromatic group, or a halogen atom, and m and n each independently represent an integer of 0 to 4:a unit (B) represented by the following formula, wherein R3 and R4 each independently represent a hydrogen atom, hydrocarbon group having 1 to 10 carbon atoms optionally containing an aromatic group, or a halogen atom, R5 and R6 each independently represent a hydrocarbon group having 1 to 10 carbon atoms optionally containing an aromatic group, s and t each independently represent an integer of 0 to 4, and p and q each independently represent an integer of 1 or more:and a carbonate unit (C) derived from an aliphatic diol compound and/or alicyclic diol compound, wherein the polycarbonate resin satisfies the following expressions (I) and (II): (I) the molar ratio of unit (A) to unit (B), (A)/(B), is 0.2 to 11.0, and (II) the molar ratio of unit (A)+unit (B) to the (A)+unit (B)+unit (C), {(A+B)/(A+B+C)}, is 0.30 to 0.60."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Polycarbonate resin and optical film","description":"Provided are a polycarbonate resin and an optical film formed therefrom, having wavelength dispersion characteristics close to the ideal broad bandwidth, excellent durable stability and flexibility, h","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9850344","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9850344","citation_suggestion":"Patentable. \"Polycarbonate resin and optical film\" (US-9850344). https://patentable.app/patents/US-9850344","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9850344","json":"https://patentable.app/api/llm-context/US-9850344","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T03:52:26.315Z"}