Ethylene Glycol → Propylene Glycol

HRID 2050953Notes

Reaction equation

HRID 2050953 reaction equation
[CH2:1]([OH:4])[CH2:2][OH:3].[C:5]([OH:12])(=[O:11])/[CH:6]=[CH:7]\[C:8]([OH:10])=[O:9].[CH2:13]([C:15]([CH2:20][OH:21])([CH2:18][OH:19])[CH2:16][CH3:17])[OH:14].[CH2:22]([O:25][CH2:26][CH:27]=[CH2:28])[CH:23]=[CH2:24]>CO>[CH2:1]([OH:4])[CH:2]([OH:3])[CH3:5].[CH2:13]([C:15]([CH2:20][OH:21])([CH2:18][OH:19])[CH2:16][CH3:17])[OH:14].[CH2:22]([O:25][CH2:26][CH:27]=[CH2:28])[CH:23]=[CH2:24].[C:8]1(=[O:10])[O:12][C:5](=[O:11])[CH:6]=[CH:7]1.[C:13]1(=[O:14])[O:4][C:1](=[O:9])[C:2]2=[CH:22][CH:23]=[CH:17][CH:16]=[C:15]12

Participants

8

Reactant 3

HCID 174Ethylene GlycolHCID 444266Maleic AcidHCID 21585049HCID 21585049, compound

Product 4

HCID 1030Propylene GlycolHCID 6811Phthalic AnhydrideHCID 7923Maleic AnhydrideHCID 21585049HCID 21585049, compound

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

An unsaturated polyester is obtained from 1458 g of ethylene glycol, 798 g of 1,2-propylene glycol, 3012 g of trimethylolpropane diallylether, 3102 g of maleic acid anhydride, 521 g of phthalic acid anhydride, 55 g of methanol and 550 g of an ester of maleic acid and trimethylolpropane-diallylether by the conventional method of melt condensation. This unsaturated polyester is dissolved in styrene.

Sources & evidence

ORD record
ord-8ed0a0fb5b2247f0a77d2fef5534beb8
Source dataset
uspto-grants-1991_05
Patent number
US05015689

Reaction notes

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