Dimethyl terephthalate → Terephthalic Acid

HRID 1455670Notes

Reaction equation

HRID 1455670 reaction equation
[C:1]([O:13]C)(=[O:12])[C:2]1[CH:11]=[CH:10][C:5]([C:6]([O:8]C)=[O:7])=[CH:4][CH:3]=1>O>[C:1]([OH:13])(=[O:12])[C:2]1[CH:11]=[CH:10][C:5]([C:6]([OH:8])=[O:7])=[CH:4][CH:3]=1

Participants

3

Reactant 1

HCID 8441Dimethyl terephthalate2×

Product 1

HCID 7489Terephthalic Acid

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

An example will be described, in which slurry of terephthalic acid is produced by hydrolyzing dimethyl terephthalate by using the aforementioned apparatus. Dimethyl terephthalate and water are introduced into an agitation vessel (which is used as a hydrolysis reaction vessel) 1 through a raw material introducing path 6. Hydrolysis reaction is then carried out under stirring by rotating an agitation blade 3 with a driving unit 5. At this time, the system may be heated depending on necessity. Dimethyl terephthalate is hydrolyzed through hydrolysis reaction to form terephthalic acid, which is deposited as crystals in the agitation vessel. Accordingly, slurry containing terephthalic acid and water is formed in the agitation vessel. The slurry is extracted through a slurry extraction tube 7 and sent to a subsequent hydrolysis reactor or a tank.

Workup

  1. additionintroducing path 6
  2. customHydrolysis reaction
  3. temperatureAt this time, the system may be heated

Sources & evidence

ORD record
ord-e415987e29f54b459fb34bf4c50a6535
Source dataset
uspto-grants-2009_01
Patent number
US07482485B2

Reaction notes

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