{
  "timeline": [
    {
      "date": "1926/6",
      "category": "会社設立",
      "region": "",
      "importance": 3,
      "event": "倉敷絹織株式会社を設立",
      "detail": "化学繊維レーヨンの企業化を目的に大原孫三郎が設立",
      "significance": "大原財閥の一翼として創業。日本の化学繊維工業の草分けの一社",
      "source": "有価証券報告書"
    },
    {
      "date": "1928/5",
      "category": "設備投資",
      "region": "",
      "importance": 2,
      "event": "倉敷工場操業開始",
      "detail": "レーヨンの生産を開始",
      "significance": "創業事業であるレーヨン生産の本格稼働",
      "source": "有価証券報告書"
    },
    {
      "date": "1933/11",
      "category": "株式上場",
      "region": "",
      "importance": 2,
      "event": "東京及び大阪株式取引所に上場",
      "detail": "",
      "significance": "資本市場からの資金調達体制を確立",
      "source": "有価証券報告書"
    },
    {
      "date": "1936/7",
      "category": "設備投資",
      "region": "",
      "importance": 1,
      "event": "西条工場操業開始",
      "detail": "レーヨンの生産",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1936/8",
      "category": "設備投資",
      "region": "",
      "importance": 1,
      "event": "岡山工場操業開始",
      "detail": "レーヨンの生産",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1940/12",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "中国産業株式会社を設立",
      "detail": "1973年にクラレケミカルに社名変更",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1943/2",
      "category": "企業買収",
      "region": "",
      "importance": 1,
      "event": "角一ゴム株式会社へ出資",
      "detail": "1965年にクラレプラスチックスに社名変更",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1949/4",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "倉敷レイヨン株式会社に社名変更",
      "detail": "",
      "significance": "戦後の再出発を象徴する改称",
      "source": "有価証券報告書"
    },
    {
      "date": "1949/5",
      "category": "株式上場",
      "region": "",
      "importance": 1,
      "event": "証券取引所再開により上場再開",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1950/11",
      "category": "研究開発",
      "region": "",
      "importance": 3,
      "event": "岡山工場でビニロンの生産開始",
      "detail": "",
      "significance": "合成繊維ビニロンの工業化は日本初の独自技術による合成繊維。クラレの技術力の象徴",
      "source": "有価証券報告書"
    },
    {
      "date": "1956/11",
      "category": "設備投資",
      "region": "",
      "importance": 1,
      "event": "玉島工場操業開始",
      "detail": "レーヨンの生産",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1960/11",
      "category": "企業買収",
      "region": "",
      "importance": 1,
      "event": "協和ガス化学工業株式会社へ出資",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1962/5",
      "category": "設備投資",
      "region": "",
      "importance": 2,
      "event": "中条工場操業開始",
      "detail": "ポバールの生産を開始。天然ガス法によるPVA生産",
      "significance": "ポバール事業の主力拠点。のちのクラレの高機能素材事業の基盤",
      "source": "有価証券報告書"
    },
    {
      "date": "1964/3",
      "category": "企業買収",
      "region": "",
      "importance": 1,
      "event": "日本ベルクロ株式会社へ出資",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1964/4",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "玉島工場でポリエステルステープル「クラレエステル」の生産開始",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1964/11",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "倉敷工場で人工皮革「クラリーノ」の生産開始",
      "detail": "",
      "significance": "独自の人工皮革ブランド。ランドセル向け等で高いシェアを確立する主力製品の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "1966/11",
      "category": "設備投資",
      "region": "",
      "importance": 1,
      "event": "岡山工場で人工皮革「クラリーノ」の生産開始",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1968/6",
      "category": "設備投資",
      "region": "",
      "importance": 1,
      "event": "倉敷市に中央研究所を設立",
      "detail": "現くらしき研究センター",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1969/11",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "西条工場でポリエステルフィラメント「クラベラ」の生産開始",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1970/6",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "株式会社クラレに社名変更",
      "detail": "",
      "significance": "「倉敷レイヨン」からの脱却。レーヨン依存から高機能素材メーカーへの転換を宣言",
      "source": "有価証券報告書"
    },
    {
      "date": "1972/5",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "岡山工場でエバールの生産開始",
      "detail": "エチレン・ビニルアルコール共重合体",
      "significance": "ガスバリア性に優れたエバールはのちにクラレの最大収益源に成長。世界シェア首位",
      "source": "有価証券報告書"
    },
    {
      "date": "1972/10",
      "category": "",
      "region": "米州",
      "importance": 1,
      "event": "米国にKuraray International Corp.設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1972/12",
      "category": "設備投資",
      "region": "",
      "importance": 1,
      "event": "鹿島工場操業開始",
      "detail": "ポリイソプレンゴム「クラプレン」の生産",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1976/9",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "中条工場でイソプレン誘導品の生産開始",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1983/10",
      "category": "",
      "region": "米州",
      "importance": 2,
      "event": "米国にエバール生産の現地法人を設立",
      "detail": "EVAL Company of America",
      "significance": "エバールの海外生産体制構築の第一歩",
      "source": "有価証券報告書"
    },
    {
      "date": "1984/12",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "日本ベルクロ株式会社を吸収合併",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1986/10",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "鹿島工場で光ディスクの生産開始",
      "detail": "再生専用レーザーディスク",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1986/12",
      "category": "",
      "region": "米州",
      "importance": 2,
      "event": "米国でエバール樹脂の生産開始",
      "detail": "EVAL Company of America",
      "significance": "海外現地生産の本格稼働。グローバル供給体制の確立",
      "source": "有価証券報告書"
    },
    {
      "date": "1987/10",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "クラフレックス株式会社を吸収合併",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1988/4",
      "category": "経営計画",
      "region": "",
      "importance": 1,
      "event": "第2次中期経営計画を策定",
      "detail": "",
      "significance": "",
      "source": ""
    },
    {
      "date": "1989/10",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "協和ガス化学工業株式会社を吸収合併",
      "detail": "",
      "significance": "化学品事業の強化・統合",
      "source": "有価証券報告書"
    },
    {
      "date": "1991/4",
      "category": "",
      "region": "欧州",
      "importance": 2,
      "event": "ドイツにKuraray Europe GmbH設立",
      "detail": "",
      "significance": "欧州市場への本格的な事業基盤の構築",
      "source": "有価証券報告書"
    },
    {
      "date": "1994/4",
      "category": "設備投資",
      "region": "",
      "importance": 1,
      "event": "つくば市に筑波研究所を設立",
      "detail": "現つくば研究センター",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1995/12",
      "category": "",
      "region": "欧州",
      "importance": 1,
      "event": "ドイツにKuraray Eval Europe GmbHを設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1996/10",
      "category": "",
      "region": "東南アジア",
      "importance": 1,
      "event": "シンガポールにポバール製造の合弁会社POVAL ASIA PTE LTDを設立",
      "detail": "日本合成化学工業との合弁",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1997/10",
      "category": "",
      "region": "米州",
      "importance": 2,
      "event": "ベルギーにEVAL Europe N.V.を設立",
      "detail": "エバールの欧州現地生産",
      "significance": "米国に続き欧州でもエバール生産体制を確立。三極供給体制の完成",
      "source": "有価証券報告書"
    },
    {
      "date": "1999/5",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "西条工場で耐熱性ポリアミド樹脂「ジェネスタ」の生産開始",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1999/9",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "EVAL Europe N.V.でエバール樹脂の生産開始",
      "detail": "",
      "significance": "エバールの三極生産体制（日米欧）が完成",
      "source": "有価証券報告書"
    },
    {
      "date": "2001/2",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "レーヨン生産を停止",
      "detail": "創業事業からの完全撤退",
      "significance": "祖業であるレーヨンからの撤退。化学繊維メーカーから高機能素材メーカーへの転換を完了",
      "source": "有価証券報告書"
    },
    {
      "date": "2001/12",
      "category": "企業買収",
      "region": "欧州",
      "importance": 3,
      "event": "スイスClariant AGからポバール及びPVB事業を買収",
      "detail": "Kuraray Specialities Europe GmbHが運営を開始",
      "significance": "欧州でのポバール・PVB事業の基盤を一挙に獲得。グローバル機能素材メーカーへの飛躍",
      "source": "有価証券報告書"
    },
    {
      "date": "2003/6",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "経営諮問会議を新設し執行役員制度を導入",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2004/3",
      "category": "",
      "region": "中国",
      "importance": 1,
      "event": "中国に可楽麗国際貿易(上海)有限公司を設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2004/12",
      "category": "企業買収",
      "region": "欧州",
      "importance": 2,
      "event": "ドイツHT Troplast AGからPVBフィルム事業を買収",
      "detail": "Kuraray Specialities Europe GmbHが運営を開始",
      "significance": "PVBフィルムの欧州生産体制を強化",
      "source": "有価証券報告書"
    },
    {
      "date": "2006/12",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "RPTV用光学スクリーンから撤退",
      "detail": "オプトスクリーンの生産停止",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2008/1",
      "category": "組織再編",
      "region": "米州",
      "importance": 1,
      "event": "米国子会社を統合再編",
      "detail": "Kuraray America Inc.がEVAL Company of America等を吸収合併",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2009/10",
      "category": "株式上場",
      "region": "",
      "importance": 1,
      "event": "大阪証券取引所における上場を廃止",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/3",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "有価証券の純増",
      "detail": "",
      "significance": "",
      "source": ""
    },
    {
      "date": "2012/6",
      "category": "企業買収",
      "region": "",
      "importance": 3,
      "event": "MonoSol Holdings Inc.及び子会社を買収",
      "detail": "産業用ポバールフィルムの製造・販売",
      "significance": "ポバール関連事業の川下への垂直統合。水溶性フィルム市場でのグローバルリーダーシップ獲得",
      "source": "有価証券報告書"
    },
    {
      "date": "2014/6",
      "category": "企業買収",
      "region": "",
      "importance": 4,
      "event": "米DuPontからビニルアセテート関連事業を買収",
      "detail": "VAM・PVA等の事業を取得",
      "significance": "化学業界における大型クロスボーダーM&A。ポバール世界シェア首位を盤石に",
      "source": "有価証券報告書"
    },
    {
      "date": "2015/4",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "Plantic Technologies Limited及び子会社を買収",
      "detail": "バイオマス由来のバリアフィルム事業",
      "significance": "環境対応素材への展開",
      "source": "有価証券報告書"
    },
    {
      "date": "2017/1",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "クラレケミカル株式会社を吸収合併",
      "detail": "炭素材料事業部を新設",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2018/1",
      "category": "企業買収",
      "region": "",
      "importance": 3,
      "event": "米Calgon Carbon Corporationを買収",
      "detail": "高機能活性炭の製造・販売",
      "significance": "活性炭事業でグローバルトップクラスの地位を獲得。環境・水処理分野への本格参入",
      "source": "有価証券報告書"
    },
    {
      "date": "2018/5",
      "category": "",
      "region": "米州",
      "importance": 2,
      "event": "米国工場で火災事故・訴訟により巨額賠償",
      "detail": "",
      "significance": "海外事業拡大に伴うリスクの顕在化",
      "source": ""
    },
    {
      "date": "2018/6",
      "category": "",
      "region": "東南アジア",
      "importance": 1,
      "event": "タイにKuraray GC Advanced Materials Co. Ltd.を設立",
      "detail": "PTT Global Chemical・住友商事との共同出資。ブタジエン誘導品の製造・販売",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/4",
      "category": "株式上場",
      "region": "",
      "importance": 1,
      "event": "東京証券取引所プライム市場へ移行",
      "detail": "市場区分の見直しによる移行",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2023/2",
      "category": "",
      "region": "東南アジア",
      "importance": 1,
      "event": "タイでブタジエン誘導品の生産開始",
      "detail": "Kuraray GC Advanced Materials Co. Ltd.",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2023/5",
      "category": "",
      "region": "東南アジア",
      "importance": 1,
      "event": "タイでイソブチレン誘導品の生産開始",
      "detail": "Kuraray Advanced Chemicals (Thailand) Co. Ltd.",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2025/5",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "クラレクラフレックス株式会社を吸収合併",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    }
  ]
}