{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8488432","patent":{"patent_number":"US-8488432","title":"Polymer compound, composition for alignment film, alignment film, optical element, and optical information writing/reading device","assignee":null,"inventors":[],"filing_date":"2012-04-13T00:00:00.000Z","publication_date":"2013-07-16T00:00:00.000Z","cpc_codes":["G11B"],"num_claims":12,"abstract":"To provide a polymer compound capable of forming an alignment film which has a sufficient aligning performance to a liquid crystalline compound and which is excellent also in adhesion with an optical anisotropic film obtainable by polymerizing a liquid crystalline compound in an aligned state, and a composition containing it, as well as an alignment film obtainable by using such a composition, an optical element and an optical information writing/reading device. Provided is a polymer compound comprising polymerized units derived from a fumaric acid diester and polymerized units having a radical polymerizable group in a side chain. By using this polymer compound, an alignment film is prepared. An optical element having this alignment film and an optical anisotropic film is used as a retardation plate 4 having mechanical strength and heat resistance, and good reliability without peeling. An optical information writing/reading device is constituted by using it."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Polymer compound, composition for alignment film, alignment film, optical element, and optical information writing/reading device","description":"To provide a polymer compound capable of forming an alignment film which has a sufficient aligning performance to a liquid crystalline compound and which is excellent also in adhesion with an optical ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8488432","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-8488432","citation_suggestion":"Patentable. \"Polymer compound, composition for alignment film, alignment film, optical element, and optical information writing/reading device\" (US-8488432). https://patentable.app/patents/US-8488432","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8488432","json":"https://patentable.app/api/llm-context/US-8488432","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T19:51:30.054Z"}