Process for separating cyclohexane dimethanol from dimethyl tere

Details Process for separating cyclohexane dimethanol from dimethyl tere Process for separating cyclohexane dimethanol from dimethyl tere

1993-10-22

1996-03-12

Dees, Jose G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C07C 6754

Patent

active

054987490

ABSTRACT:
Provided is a method useful for separating and removing impurities such as cyclohexane dimethanol (CHDM) and other additives from their mixture with dimethylterehthalate (DMT), formed during a depolymerization process such as methanolysis of poly(ethyene terephthalate) (PET), poly(cyclohexyldimethylene terephthalate) (PCT), or copolyers of PET and PCT. The separation and removal of CHDM is accomplished via either melt or solution crystallization of the DMT following excess methanol removal (via distillation) of the methanolysis reactor products.

REFERENCES:
patent: Re32241 (1986-09-01), Saxer
patent: 2828330 (1958-03-01), Sinn
patent: 3037050 (1962-05-01), Heisenberg et al.
patent: 3321510 (1967-05-01), Lotz et al.
patent: 3488298 (1970-01-01), Barkey et al.
patent: 3502711 (1970-03-01), Claybaugh et al.
patent: 3701741 (1972-10-01), Meyer et al.
patent: 3776945 (1973-12-01), Ligorat
patent: 4163860 (1979-08-01), Delattre et al.
patent: 4578502 (1986-03-01), Cudmore
patent: 4683034 (1987-07-01), Bader
patent: 5051528 (1991-09-01), Naujokas

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