{ "spec_version": "4", "endpoint": "history", "stock_code": "4045", "company_name": "東亞合成", "content_lang": "ja", "meta_lang": "en", "canonical_url": "https://the-shashi.com/tse/4045/decisions/", "api_url": "/api/4045/history.json", "updated": "2026-09-26", "license": "© 2026 Yutaka Sugiura. All rights reserved.", "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/4045/decisions/", "source": { "long_term": { "primary": [ "会社年鑑 1986年版", "ダイヤモンド会社産業総覧 1964年版 半期合算", "会社年鑑 1976年版 半期合算", "上場会社総覧 1956年版 半期合算", "会社年鑑 1967年版 半期合算", "会社年鑑 1971年版 半期合算", "会社年鑑 1967年版・1971年版 半期合算" ], "extraction": "EDINET の XBRL、kabupro 掲載の旧有価証券報告書、会社年鑑・社史等からの転記", "row_field": "reference", "caveat": "創業期から現在までを 1 本に繋いだ長期系列のため、年代により出所・単位・連結範囲が変わる。行ごとの reference / unit / consolidation を必ず参照すること" } }, "title": "東亞合成の歴史概略", "eras": [ { "title": "福澤桃介の矢作工業と矢作水力からの工業部門の独立", "start_year": 1933, "end_year": 1943 }, { "title": "3ソーダ会社の合併による東亞合成化学工業の発足と戦後の上場", "start_year": 1944, "end_year": 1959 }, { "title": "アクリル酸エステルの企業化とアロンアルフアが開いたアクリル化学の時代", "start_year": 1960, "end_year": 1993 }, { "title": "東亞合成への改称と海外拠点の展開、アロン化成・鶴見曹達の完全子会社化", "start_year": 1994, "end_year": 2026 } ], "summary": { "description": "東亞合成（旧東亞合成化学工業）の歴史。1944年、福澤桃介氏が興した矢作工業が3ソーダ会社を合併して発足した化学会社。アクリル酸エステルの企業化、瞬間接着剤アロンアルフアまでの沿革と経緯を執筆。" }, "long_term": [ { "year": 1949, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1950, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1951, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1952, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 45.93, "operating_profit_jp": "営業利益", "operating_profit": 7.25, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": "上場会社総覧 1956年版 半期合算" }, { "year": 1953, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 49.82, "operating_profit_jp": "営業利益", "operating_profit": 7.36, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": "上場会社総覧 1956年版 半期合算" }, { "year": 1954, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 56.34, "operating_profit_jp": "営業利益", "operating_profit": 8.43, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": "上場会社総覧 1956年版 半期合算" }, { "year": 1955, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 82.51, "operating_profit_jp": "営業利益", "operating_profit": 9.64, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": "上場会社総覧 1956年版 半期合算" }, { "year": 1956, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 117, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": "ダイヤモンド会社産業総覧 1964年版 半期合算" }, { "year": 1957, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 142, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": "ダイヤモンド会社産業総覧 1964年版 半期合算" }, { "year": 1958, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 133, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": "ダイヤモンド会社産業総覧 1964年版 半期合算" }, { "year": 1959, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 159, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": "ダイヤモンド会社産業総覧 1964年版 半期合算" }, { "year": 1960, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 181, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": "ダイヤモンド会社産業総覧 1964年版 半期合算" }, { "year": 1961, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 193, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 5, "net_margin": 2.59, "employees": null, "reference": "ダイヤモンド会社産業総覧 1964年版 半期合算" }, { "year": 1962, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 198, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 6, "net_margin": 3.03, "employees": null, "reference": "ダイヤモンド会社産業総覧 1964年版 半期合算" }, { "year": 1963, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 237.58, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 7.23, "net_margin": 3.043, "employees": null, "reference": "会社年鑑 1967年版 半期合算" }, { "year": 1964, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 260.06, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 7.06, "net_margin": 2.714, "employees": null, "reference": "会社年鑑 1967年版 半期合算" }, { "year": 1965, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 244.51, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 5.87, "net_margin": 2.4, "employees": null, "reference": "会社年鑑 1967年版 半期合算" }, { "year": 1966, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 253.6, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 5.87, "net_margin": 2.314, "employees": null, "reference": "会社年鑑 1967年版・1971年版 半期合算" }, { "year": 1967, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 267.51, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 6.13, "net_margin": 2.291, "employees": null, "reference": "会社年鑑 1971年版 半期合算" }, { "year": 1968, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 261.41, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 5.66, "net_margin": 2.165, "employees": null, "reference": "会社年鑑 1971年版 半期合算" }, { "year": 1969, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 286.35, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 6.04, "net_margin": 2.109, "employees": null, "reference": "会社年鑑 1971年版 半期合算" }, { "year": 1970, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 319.55, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 4.62, "net_profit_jp": "当期純利益", "net_profit": 6.04, "net_margin": 1.89, "employees": null, "reference": "会社年鑑 1976年版 半期合算" }, { "year": 1971, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 316.15, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 2.45, "net_profit_jp": "当期純利益", "net_profit": 3.55, "net_margin": 1.122, "employees": null, "reference": "会社年鑑 1976年版 半期合算" }, { "year": 1972, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 330.68, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 7.06, "net_profit_jp": "当期純利益", "net_profit": 5.32, "net_margin": 1.608, "employees": null, "reference": "会社年鑑 1976年版 半期合算" }, { "year": 1973, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 406.65, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 14.69, "net_profit_jp": "当期純利益", "net_profit": 8.98, "net_margin": 2.208, "employees": null, "reference": "会社年鑑 1976年版 半期合算" }, { "year": 1974, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 542.1, "operating_profit_jp": "営業利益", "operating_profit": 48.44, "ordinary_profit_jp": "経常利益", "ordinary_profit": 21.23, "net_profit_jp": "当期純利益", "net_profit": 11.67, "net_margin": 2.152, "employees": null, "reference": "会社年鑑 1976年版 半期合算" }, { "year": 1975, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 571.18, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 5.26, "net_profit_jp": "当期純利益", "net_profit": 6.35, "net_margin": 1.111, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1976, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 658.28, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 7.42, "net_profit_jp": "当期純利益", "net_profit": 7.14, "net_margin": 1.084, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1977, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 665.46, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 3.85, "net_profit_jp": "当期純利益", "net_profit": 6.35, "net_margin": 0.954, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1978, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 611.39, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 9.7, "net_profit_jp": "当期純利益", "net_profit": 7.17, "net_margin": 1.172, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1979, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 713.14, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 30.45, "net_profit_jp": "当期純利益", "net_profit": 10.51, "net_margin": 1.473, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1980, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 806.15, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 21.94, "net_profit_jp": "当期純利益", "net_profit": 8.79, "net_margin": 1.09, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1981, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 807.9, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 6.6, "net_profit_jp": "当期純利益", "net_profit": 3.28, "net_margin": 0.405, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1982, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 827.42, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 4.3, "net_profit_jp": "当期純利益", "net_profit": 3.71, "net_margin": 0.448, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1983, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 894.96, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 30.33, "net_profit_jp": "当期純利益", "net_profit": 10.89, "net_margin": 1.216, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1984, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 961.72, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 61.86, "net_profit_jp": "当期純利益", "net_profit": 29.1, "net_margin": 3.025, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1985, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1986, "month": 12, "company_name": "東亞合成化学工業", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1987, "month": 12, 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