Neopentyl glycol → Isophthalate trimellitate

HRID 1680673Notes

Reaction equation

HRID 1680673 reaction equation
[C:1]([O-:12])(=[O:11])[C:2]1[CH:10]=[CH:9][C:5]([C:6]([O-:8])=[O:7])=[CH:4][CH:3]=1.[C:13]([O-:24])(=[O:23])[C:14]1[CH:22]=[CH:21][CH:20]=[C:16]([C:17]([O-:19])=[O:18])[CH:15]=1.OCC(C)(CO)C.[C:32]([OH:43])(=[O:42])[C:33]1[CH:41]=[CH:40][C:36]([C:37]([OH:39])=[O:38])=[CH:35][CH:34]=1.CO.CO.C1CCCCC1>>[CH:14]1([C:9]2[C:5]([C:6]([O-:8])=[O:7])=[CH:4][CH:3]=[C:2]([C:1]([O-:12])=[O:11])[CH:10]=2)[CH2:22][CH2:21][CH2:20][CH2:16][CH2:15]1.[C:13]([O-:24])(=[O:23])[C:14]1[CH:22]=[CH:21][CH:20]=[C:16]([C:17]([O-:19])=[O:18])[CH:15]=1.[C:32]([O-:43])(=[O:42])[C:33]1[C:34](=[CH:35][C:36](=[CH:40][CH:41]=1)[C:37]([O-:39])=[O:38])[C:6]([O-:8])=[O:7]

Participants

6

Reactant 4

HCID 31344Neopentyl glycolHCID 1542691,4-BenzenedicarboxylateHCID 54610791,3-BenzenedicarboxylateHCID 19348892Cyclohexane dimethanol terephthalic acid

Product 2

HCID 23455597Isophthalate trimellitateHCID 86737815Cyclohexane-terephthalate

Procedure

The terephthalate or isophthalate from Stage I is in the form of a neopentyl glycol or cyclohexane dimethanol terephthalic acid oligomer which is then reacted in in Stage II with trimellitic anhydride or acid to provide a neopentyl or cyclohexane-terephthalate or isophthalate-trimellitate. The mole ratio of the neopentyl or cyclohexane terephthalate or isophthlate to the trimellitic anhydride or acid is in the range of between about 2.5 and about 5.5.

Sources & evidence

ORD record
ord-f5574c0bea45421f9895bc7f8e67ad09
Source dataset
uspto-grants-1981_06
Patent number
US04275189

Reaction notes

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