Ethylene Glycol → Dimethyl terephthalate
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]=1Participants
3
Procedure
A polyester is produced in known manner from 388 g of dimethyl terephthalate, 112 g of ethylene glycol and 75 g of glycerin and this polyester is mixed in two portions with 137 g of the reaction product of Example A at a temperature of 180 - 215° C. After the diimidedicarboxylic acid (reaction product as Example A) has been completely taken up in the terephthalic acid resin, 1.8 g of cadmium acetate is added thereto. The reaction mixture is subsequently further condensed for 3 hours at 215° C., finally under vacuum. The thus obtained resin is dissolved in 450 g of technical cresol whole still hot and this solution is reaccted with a solution of 9 g of butyl titanate in 27 g of cresol.
Sources & evidence
- ORD record
- ord-cd19a2f5275f4c81a5d9bfe1ec55ec67
- Source dataset
- uspto-grants-1979_03
- Patent number
- US04145351
Reaction notes
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