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1. (WO2010073512) METHOD FOR PRODUCING GLYCOLIDE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/073512 International Application No.: PCT/JP2009/006713
Publication Date: 01.07.2010 International Filing Date: 09.12.2009
IPC:
C07D 319/12 (2006.01) ,C08G 63/08 (2006.01)
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
D
HETEROCYCLIC COMPOUNDS
319
Heterocyclic compounds containing six-membered rings having two oxygen atoms as the only ring hetero atoms
10
1,4-Dioxanes; Hydrogenated 1,4-dioxanes
12
not condensed with other rings
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
63
Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
02
Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds
06
derived from hydroxy carboxylic acids
08
Lactones or lactides
Applicants:
株式会社クレハ KUREHA CORPORATION [JP/JP]; 東京都中央区日本橋浜町三丁目3番2号 3-3-2, Nihonbashi-Hamacho, Chuo-ku, Tokyo 1038552, JP (AllExceptUS)
鈴木茂 SUZUKI, Shigeru [JP/JP]; JP (UsOnly)
山根和行 YAMANE Kazuyuki [JP/JP]; JP (UsOnly)
小野利彦 ONO, Toshihiko [JP/JP]; JP (UsOnly)
砂川和彦 SUNAGAWA, Kazuhiko [JP/JP]; JP (UsOnly)
Inventors:
鈴木茂 SUZUKI, Shigeru; JP
山根和行 YAMANE Kazuyuki; JP
小野利彦 ONO, Toshihiko; JP
砂川和彦 SUNAGAWA, Kazuhiko; JP
Agent:
西川繁明 NISHIKAWA, Shigeaki; 東京都荒川区東日暮里三丁目43番9号ビジュアル・シティー401号 Visual City 401, 43-9, Higashi-Nippori 3-chome, Arakawa-ku, Tokyo 1160014, JP
Priority Data:
2008-33360526.12.2008JP
Title (EN) METHOD FOR PRODUCING GLYCOLIDE
(FR) PROCÉDÉ DE FABRICATION DE GLYCOLIDE
(JA) グリコリドの製造方法
Abstract:
(EN) A method for producing glycolide which comprises: a step (1) wherein a mixture comprising a glycolic acid oligomer and a high-boiling polar organic solvent is refluxed by heating under atmospheric or reduced pressure, while conducting the whole refluxing treatment within a reflux time of 0.1 to 20 hours under such conditions that substantially the total amount of the distillate distilled from the reflux system containing said mixture is refluxed to the reflux system; a step (2) wherein depolymerization is conducted by heating the mixture after the completion of the total refluxing treatment, or a mixture that is prepared by adding said high-boiling polar organic solvent to the glycolic acid oligomer component collected from the mixture after the completion of the total refluxing treatment; and a step (3) wherein glycolide is recovered from the co-distillate.
(FR) L'invention concerne un procédé de fabrication de glycolide qui comprend : une étape (1) dans laquelle un mélange comprenant un oligomère d'acide glycolique et un solvant organique polaire à haut point d'ébullition est mis au reflux par chauffage sous pression atmosphérique ou réduite, tout en exécutant l'ensemble du traitement de mise au reflux dans un temps de reflux de 0,1 à 20 heures dans des conditions telles que sensiblement la quantité totale du distillat distillé par le système de reflux contenant ledit mélange est renvoyée vers le système de reflux ; une étape (2) dans laquelle la dépolymérisation est exécutée en chauffant le mélange après la fin du traitement de reflux total, ou un mélange qui est préparé en ajoutant ledit solvant organique polaire à haut point d'ébullition au composant oligomère d'acide glycolique collecté à partir du mélange après la fin du traitement de reflux total ; et une étape (3) dans laquelle le glycolide est récupéré à partir du co-distillat.
(JA)  グリコール酸オリゴマー及び高沸点極性有機溶媒を含有する混合物を、常圧下または減圧下に加熱して還流させ、その際、該混合物を含有する還流系から留出する留出物の実質的に全量を還流系内に還流させる条件下に、0.1~20時間の範囲内の還流時間で、全還流処理を行う工程1;全還流処理後の混合物または全還流処理後の混合物から回収したグリコール酸オリゴマー成分に該高沸点極性有機溶媒を加えた混合物を、加熱して解重合を行う工程2;及び共留出物からグリコリドを取得する工程3;の各工程を含むグリコリドの製造方法。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
EP2377858JPWO2010073512US20110263875