Dimethyl terephthalate → Bisphenol A

HRID 368921

反応式

HRID 368921 の反応式
C(OC)(=O)C1C=CC(C(OC)=O)=CC=1.C(OC)(=O)C1C=CC=C(C(OC)=O)C=1.[OH:29][C:30]1[CH:35]=[CH:34][C:33]([C:36]([C:39]2[CH:44]=[CH:43][C:42]([OH:45])=[CH:41][CH:40]=2)([CH3:38])[CH3:37])=[CH:32][CH:31]=1.C1OC1>C([O-])(=O)C.[Mn+2].C([O-])(=O)C.C(O)CO>[OH:29][C:30]1[CH:31]=[CH:32][C:33]([C:36]([C:39]2[CH:40]=[CH:41][C:42]([OH:45])=[CH:43][CH:44]=2)([CH3:38])[CH3:37])=[CH:34][CH:35]=1

参加物

6

反応物 3

HCID 8441Dimethyl terephthalateHCID 15088Dimethyl isophthalateHCID 22406341Bisphenol-a ethyleneoxide

生成物 1

HCID 6623Bisphenol A

試薬・触媒・溶媒 2

HCID 12525Manganous Acetate触媒HCID 174Ethylene Glycol溶媒

実験手順

Dimethyl terephthalate, dimethyl isophthalate, ethylene glycol, bisphenol A-ethylene oxide (2 mols) adduct, and manganese acetate were deposit into a reactor installed with a heater, a stirrer, a rectification column, a pressure-reducing device and a thermometer, as in Table 17, and gradually heated in a nitrogen atmosphere up to a temperature falling between 160 and 220° C. over a period of about 4 hours to effect interesterification, while removing ethanol through distillation. Then, this was subjected to polycondensation under a reduced pressure of from 0.5 to 5.0 mmHg at 260° C. for about 2 hours. Thus were obtained bisphenol A-added polyester resins b-1 to b-4 as in Table 17. Each of the thus-obtained, bisphenol A-added polyester resins was dissolved in a mixed solvent of cyclohexanone/Solvesso 150 (50/50, by weight) to prepare a resin solution having a nonvolatile content of 40%. The molecular weight of each bisphenol A-added polyester resin being produced was controlled by varying the polycondensation time. The number-average molecular weight of each resin was measured in terms of polystyrene, through gel permeation chromatography.

後処理

  1. temperaturea rectification column, a pressure-reducing device and a thermometer, as in Table 17, and gradually heated in a nitrogen atmosphere up to a temperature
  2. customwhile removing ethanol
  3. distillationthrough distillation
  4. waitThen, this was subjected to polycondensation under a reduced pressure of from 0.5 to 5.0 mmHg at 260° C. for about 2 hours

出典と根拠

ORDレコード
ord-19d1dfdc5b9b422e8580f27315188c89
出典データセット
uspto-grants-2000_10
特許番号
US06136455

関連ノート

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