Addition of diethylene glycol in continuous production of polyes

Details Addition of diethylene glycol in continuous production of polyes Addition of diethylene glycol in continuous production of polyes

1975-08-13

1977-05-24

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

With incorporating dye susceptible material or dyeing workpiece

260 75T, 264211, D01F 104

Patent

active

040255921

ABSTRACT:
Polyester texturing feed yarns are produced by preparing an ethylene terephthalate polymer from ethylene glycol plus a small amount of diethylene glycol, and dimethyl terephthalate or terephthalic acid, and melt-spinning the polymer into filaments. The filaments may be partially oriented by spinning at high speed without cold drawing, or may be fully drawn after conventional spinning. The diethylene glycol is added in controlled amounts to provide uniform dyeability in fabrics prepared from the yarn after texturing.

REFERENCES:
patent: 2534028 (1950-12-01), Izard
patent: 3051212 (1962-08-01), Daniels
patent: 3423370 (1969-01-01), Fitz et al.
patent: 3496146 (1970-02-01), Mellichamp
patent: 3554976 (1971-01-01), Hull
patent: 3829543 (1974-08-01), Robertson

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