Process for the continuous production of high molecular weight p

Details Process for the continuous production of high molecular weight p Process for the continuous production of high molecular weight p

1976-04-15

1977-12-20

Phynes, Lucille M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 75T, C08G 6326

Patent

active

040641120

ABSTRACT:
This invention relates to a process for the continuous production of high molecular weight polyethylene terephthalate by polycondensation in the solid phase wherein granulated, dried polyethylene terephthalate, having an intrinsic viscosity of at least 0.15, is first crystallized and is thereafter subjected to solid state polycondensation.

REFERENCES:
patent: 3405098 (1968-10-01), Heighton et al.
patent: 3544523 (1970-12-01), Maxion
patent: 3544525 (1970-12-01), Balint et al.
patent: 3634359 (1972-01-01), Breitschaft et al.

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