Process of making poy polyester fiber

Details Process of making poy polyester fiber Process of making poy polyester fiber

1997-02-06

1998-05-26

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

26421112, 528167, 528287, D01D 512, D01F 616, D01F 662

Patent

active

057560331

ABSTRACT:
The present invention is a pre-oriented, undrawn polyester fiber spun with spooling speeds of at least 3,000 m/min., wherein the polyester is a copolymer comprised essentially of ethylene terephthalate units and up to 10 weight % of other dicarboxylic acids or other diols, and carboxy phosphonic acid units of the formula: ##STR1## wherein R is selected from C.sub.1-10 -alkylene, C.sub.1-10 -cycloalkylene or C.sub.6-10 -arylene, in a quantity corresponding to 30 to 500 ppm phosphorus, in relation to polyester. The invention also comprises a process for the production of this fiber.

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patent: 5034174 (1991-07-01), Reese
patent: 5340517 (1994-08-01), Koschinek et al.

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