Ethylene Oxide → Bis(2-hydroxyethyl) terephthalate

HRID 1580427ノート

反応式

HRID 1580427 の反応式
[C:1]([OH:12])(=[O:11])[C:2]1[CH:10]=[CH:9][C:5]([C:6]([OH:8])=[O:7])=[CH:4][CH:3]=1.[CH2:13]([CH:16]1OCC[O:17]1)CC.[CH2:21]1[O:23][CH2:22]1>C([O-])(=O)C1C=CC(C([O-])=O)=CC=1.C([N+](CC)(CC)CC)C.C([N+](CC)(CC)CC)C>[C:1]([O:12][CH2:21][CH2:22][OH:23])(=[O:11])[C:2]1[CH:10]=[CH:9][C:5]([C:6]([O:8][CH2:13][CH2:16][OH:17])=[O:7])=[CH:4][CH:3]=1

参加物

5

反応物 3

HCID 6354Ethylene OxideHCID 7489Terephthalic AcidHCID 1798322-Propyl-1,3-dioxolane

生成物 1

HCID 13739Bis(2-hydroxyethyl) terephthalate

試薬・触媒・溶媒 1

HCID 19591307Tetraethyl ammonium terephthalate触媒

反応条件

温度
155 °C

実験手順

A 3-liter stirred autoclave is charged with 600 grams of crude terephthalic acid (3.61 moles), 1600 ml. of 2-propyldioxolane reaction medium, 0.11 mole of tetraethyl ammonium terephthalate catalyst and then purged with nitrogen. Liquid ethylene oxide (473 grams, 10.75 mole) is then pumped in and the reactor heated quickly to 155°C. by passing steam through internal coils. After about 31/2 minutes, the reaction is terminated by pressuring the contents of the autoclave into a vessel where the ethylene oxide is flashed and then the unreacted terephthalic acid removed by filtration. Cooling of the filtrate to about 18°C. gives about 742 grams of crude bis(2-hydroxyethyl) terephthalate.

後処理

  1. custompurged with nitrogen
  2. customAfter about 31/2 minutes, the reaction is terminated
  3. customthe unreacted terephthalic acid removed by filtration
  4. temperatureCooling of the filtrate to about 18°C.

出典と根拠

ORDレコード
ord-3c75cc82fdcd4d1fb3ad76e2469ea6fc
出典データセット
uspto-grants-1976_01
特許番号
US03932566

反応ノート

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