Ethion → Trimethylene ether tetramethylene terephthalate

HRID 1295918

Reaction equation

HRID 1295918 reaction equation
[C:1](OC)(=[O:12])[C:2]1[CH:11]=[CH:10][C:5]([C:6]([O:8]C)=[O:7])=[CH:4][CH:3]=1.[CH2:15]([OH:20])[CH2:16][CH2:17][CH2:18][OH:19].CCOP(SCSP(OCC)(OCC)=S)(OCC)=S>CC([O-])C.CC([O-])C.CC([O-])C.CC([O-])C.[Ti+4]>[CH2:10]1[O:8][CH2:6][CH2:5]1.[C:1]1(=[O:12])[O:20][CH2:15][CH2:16][CH2:17][CH2:18][O:19][C:6](=[O:7])[C:5]2[CH:10]=[CH:11][C:2]1=[CH:3][CH:4]=2

Participants

5

Reactant 3

HCID 3286EthionHCID 80641,4-ButanediolHCID 8441Dimethyl terephthalate

Product 1

HCID 86608897Trimethylene ether tetramethylene terephthalate

Reagents, catalysts & solvents 1

HCID 11026Titanium isopropoxideCatalyst

Procedure

Poly(trimethylene ether-tetramethylene terephthalate) was prepared as described for Example 1, with the exception that the number average molecular weight of the polytrimethylene ether glycol used was 2,390. The amounts of ingredients used were: dimethyl terephthalate, 12.52 kg; 1,4-butanediol, 14.90 kg; polytrimethylene ether glycol, 13.0 kg; tetraisopropyl titanate, 43.3 g; and ETHANOX, 80.8 g. The properties of the elastomer are reported in Table 1.

Sources & evidence

ORD record
ord-d7bbcb752039456cb237918c433753b3
Source dataset
uspto-grants-2007_07
Patent number
US07244790B2

Linked notes

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