Process for isolating macrocyclic polyester oligomers

Details Process for isolating macrocyclic polyester oligomers Process for isolating macrocyclic polyester oligomers

1994-12-09

1995-07-18

Acquah, Samuel A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

528482, 210661, C08F 600

Patent

active

054342449

ABSTRACT:
Process for isolating macrocyclic polyester oligomers from impurities comprising the step of subjecting solutions of macrocyclic polyester oligomers to protonated molecular sieves.

REFERENCES:
patent: 5039783 (1991-08-01), Brunelle et al.
Satterfield et al., AlChE Journal, "Liquid Sorption Equilibria of Selected Binary Hydrocarbon Systems in Type Y Zeolites", vol. 18, No. 4, Jul. 1972, pp. 720-728.
Wick et al., Angew. Makromol. Chem. 1983, 112, "Cyclic Oligomers in Polyesters From Diols and Aromatic Dicarboxylic Acids", pp. 59-94.
Meraskentis and Zahn, Chem. Ber. vol. 103, 1970, "Preparation of Cyclic Esters from Terephthalic Acid and Diolen", pp. 3041-3049.
Zahn and Repin, Chem. Ber. vol. 103, 1970, "Synthesis of a Homologous Series of Cyclic Ethylene Terephthalates", pp. 3041-3049.

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