Production of tetramethylene terephthalate polymers using 225.de

Details Production of tetramethylene terephthalate polymers using 225.de Production of tetramethylene terephthalate polymers using 225.de

1976-01-19

1977-09-20

Phynes, Lucille M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C08G 6314

Patent

active

040496350

ABSTRACT:
1,4-Butanediol and a dialkyl benzenedicarboxylate such as dimethyl terephthalate are subjected to transesterification conditions and thereafter to polycondensation in the presence of a tetraalkyl titanate catalyst at a temperature within the range of 225.degree. to 248.degree. C.

REFERENCES:
patent: 2727881 (1955-12-01), Caldwell et al.
patent: 3817935 (1974-06-01), Beer
patent: 3907754 (1975-09-01), Tershansy et al.
patent: 3965071 (1976-06-01), McClelland

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