Process for preparing polyesters for opaque film use

Details Process for preparing polyesters for opaque film use Process for preparing polyesters for opaque film use

1975-05-05

1977-02-15

Phynes, Lucille M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260475P, C08G 6314

Patent

active

040082075

ABSTRACT:
A process for preparing a polyester by carrying out the ester-interchange reaction of a lower alkyl ester of terephthalic acid and a glycol in the presence of a calcium compound and a lithium compound having ester-interchange catalysis capacities in amounts satisfying all of the following relationships:

REFERENCES:
patent: 3847873 (1974-12-01), Jackson et al.
patent: 3907754 (1975-09-01), Tershansy et al.

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