1,4-Butanediol → Dimethyl isophthalate

HRID 263215Notes

Reaction equation

HRID 263215 reaction equation
[CH2:1]([OH:6])CCCO.COC(=O)[C:10]1[CH:19]=[CH:18][C:13]([C:14]([O:16][CH3:17])=[O:15])=[CH:12][CH:11]=1.C([O-])(=O)C1C(=CC=CC=1)[C:24]([O-])=[O:25]>>[C:24]([O:6][CH3:1])(=[O:25])[C:11]1[CH:10]=[CH:19][CH:18]=[C:13]([C:14]([O:16][CH3:17])=[O:15])[CH:12]=1

Participants

4

Reactant 3

HCID 80641,4-ButanediolHCID 8441Dimethyl terephthalateHCID 181977Phthalate

Product 1

HCID 15088Dimethyl isophthalate

Procedure

The block copolyester is sold by E. I. du Pont de Nemours and Company and is characterized by a melt index (2160 g./200° C.) of 6-8, a TMA S.P. of 144° C. and a DTA crystalline M.P. of 154° C. The 1,4-butanediol/PTMEG mole ratio is 5.0 and the dimethylterephthalate to total phthalate ratio is 0.78.

Workup

  1. customis characterized by a melt index (2160 g./200° C.) of 6-8
  2. customof 144° C.

Sources & evidence

ORD record
ord-15dfbfdf5dd34cb0b8a15e0a9e11de5f
Source dataset
uspto-grants-1979_05
Patent number
US04156702

Reaction notes

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