Adipic Acid → 5-Phenyl-2,4-pentadienoic acid
Reaction equation
C1[O:3]C1.O[C:5]1[CH:10]=[CH:9][C:8]([C:11]([C:14]2[CH:19]=[CH:18][C:17]([OH:20])=CC=2)(C)C)=[CH:7][CH:6]=1.C1OC1C.C(O)(=O)C1C=CC(C(O)=O)=CC=1.C(O)(=O)CCCCC(O)=O.C([Sn](=O)CCCC)CCC>>[CH:14]([CH:19]=[CH:18][C:17]([OH:20])=[O:3])=[CH:11][C:8]1[CH:7]=[CH:6][CH:5]=[CH:10][CH:9]=1Participants
Procedure
In a reaction vessel equipped with a condenser, a stirrer and a nitrogen inlet tube, 229 parts of ethylene oxide 2 mol adduct of bisphenol A, 529 parts of propylene oxide 3 mol adduct of bisphenol A, 208 parts of terephthalic acid, 46 parts of adipic acid, and 2 parts of dibutyltin oxide were added. The mixture was subjected to a reaction for 8 hours at 230° C. under normal pressure, and subsequently reacted for 5 hours under a reduced pressure of from 10 mmHg to 15 mmHg. Further, 44 parts of trimellitic anhydride were added thereto, and the mixture was reacted for 2 hours at 180° C. under normal pressure. Thus a [low-molecular weight polyester 1] was obtained. The [low-molecular weight polyester 1] was found to have a number average molecular weight of 2,500, a mass average molecular weight of 6,700, a glass transition temperature (Tg) of 43° C., an acid value of 25 mgKOH/g and an SP value of 10.8.
Workup
- customIn a reaction vessel equipped with a condenser, a stirrer and a nitrogen inlet tube
- customThe mixture was subjected to a reaction for 8 hours at 230° C. under normal pressure
- customsubsequently reacted for 5 hours under a reduced pressure of from 10 mmHg to 15 mmHg
- customthe mixture was reacted for 2 hours at 180° C. under normal pressure
Sources & evidence
- ORD record
- ord-7367acb086f744b7839187290024dd24
- Source dataset
- uspto-grants-2013_10
- Patent number
- US08546053B2
Reaction notes
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