Ethylene Glycol → Dimethyl terephthalate

HRID 426645Notes

Reaction equation

[CH2:1]([OH:4])[CH2:2]O.O[CH2:6][CH:7]([CH2:9][OH:10])O>>[C:9]([O:10][CH3:1])(=[O:10])[C:7]1[CH:6]=[CH:7][C:2]([C:1]([O:4][CH3:2])=[O:4])=[CH:9][CH:6]=1

Participants

Reactant 2

HCID 174Ethylene Glycol

HCID 753Glycerol

Product 1

HCID 8441Dimethyl terephthalateYield 490.7%

Procedure

A polyester produced in known manner from 388 g of dimethyl terephthalate, 112 g of ethylene glycol and 75 g of glycerin has 80 g of technical cresol added thereto and the mixture is heated to 80° C. 144 g of trimellitic acid anhydride and 74 g of 4,4'-diaminodiphenyl methane is then added to the resin melt and the temperature is slowly increased to 215° C. At 140° C. the resin melt becomes turbid and highly viscous, obviously due to the formation and separation of the diimidodicarboxylic acid of Example A.

Sources & evidence

ORD record: ord-4f8331151cf74645a9c52f91df221f6f
Source dataset: uspto-grants-1979_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04170684

Reaction notes

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