Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1976-03-02
1977-11-15
Myers, Jane S.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
C07C 6982
Patent
active
040586634
ABSTRACT:
Disclosed is the stabilization of thermally unstable, fresh dimethyl terephthalate of at least 99.8 weight % purity, free of alkali metal compound material, and produced by the cooxidation-esterification process. Stabilization is effected by incorporating therein a stabilizing quantity of alkali metal compound material having no significant concentration of either phosphonic acid moiety or phosphite moiety.
REFERENCES:
patent: 3461153 (1969-08-01), Tholstrup et al.
patent: 3642871 (1972-02-01), Tholstrup et al.
Hercules Incorporated
Hopkins George H.
Myers Jane S.
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