Terephthalic Acid → Adipic Acid

HRID 2164862Notes

Reaction equation

HRID 2164862 reaction equation
O[CH2:2][C:3](C)(CO)C.C(O)(=O)[C:9]1[CH:17]=[CH:16][CH:15]=[C:11]([C:12]([OH:14])=[O:13])[CH:10]=1.[C:20]([OH:31])(=[O:30])[C:21]1C=C[C:24]([C:25]([OH:27])=[O:26])=[CH:23][CH:22]=1>>[C:12]([OH:14])(=[O:13])[CH2:11][CH2:15][CH2:16][CH2:17][CH2:9][CH2:10][CH2:2][CH3:3].[C:20]([OH:31])(=[O:30])[CH2:21][CH2:22][CH2:23][CH2:24][C:25]([OH:27])=[O:26]

Participants

5

Reactant 3

HCID 7489Terephthalic AcidHCID 8496Isophthalic AcidHCID 31344Neopentyl glycol

Product 2

HCID 196Adipic AcidHCID 8158Nonanoic Acid

Procedure

Typical polyester resins that can be used are those based on a symmetrical glycol e.g. neopentyl glycol and one or more aromatic dicarboxylic acids e.g. isophthalic acid or terephthalic acid, the acid content optionally additionally being provided by an aliphatic mono or dicarboxylic acid e.g. pelargonic acid, adipic acid or trimellitic anhydride. The polyester should preferably have an acid value of 30-100 mg KOH/g, a melting point of 50°-70° C. and a melt viscosity of 10-14 poise at 200° C. (as measured using an I.C.I. Cone and Plate Viscometer).

Sources & evidence

ORD record
ord-5c01e32b00c94d939dd87824040584aa
Source dataset
uspto-grants-1985_03
Patent number
US04507441

Reaction notes

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