Ethylene Glycol → Dimethyl terephthalate

HRID 1578676Notes

Reaction equation

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

Participants

Reactant 2

HCID 174Ethylene Glycol

HCID 753Glycerol

Product 1

HCID 8441Dimethyl terephthalateYield 400%

Procedure

200 g of the above obtained 30 % solution of an oligohydantoin in cresol is mixed with a solution of 200 g of a polyester obtained from 1,6 mol terephthalic acid dimethylester, 1,2 mol ethylene glycol and 0,8 mol glycerine and having 6 % by weight OH groups in 480 g m-cresol at 50°C. A homogeneous solution having a viscosity of 5800 cP20°C is obtained. This solution is applied to a warm metal sheet and stoved for half an hour at 230°C and about 3 minutes at 300°C to a clear lacquer film having a pencil hardness of 5 H.

Sources & evidence

ORD record: ord-b42118bc7ec2486486e3aa3586f08374
Source dataset: uspto-grants-1976_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US03939122

Reaction notes

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