Process for producing low carboxyl polyester fibers and other ar

Details Process for producing low carboxyl polyester fibers and other ar Process for producing low carboxyl polyester fibers and other ar

1976-02-17

1978-01-31

Woo, Jay H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 75T, 264211, D01F 100, C08G 5136

Patent

active

040715043

ABSTRACT:
There is disclosed an improved process for preparing textile and industrial fibers by melt extruding a polyester resin from melt spinning apparatus to form filaments while adding to and reacting with said polyester resin while in said melt spinning apparatus a monofunctional epoxide wherein the improvement comprises incorporating in said polyester resin prior to extrusion thereof at least one catalytic compound consisting of an alkali metal salt in an amount ranging from about 0.01 to 10.0 parts by weight (calculation based on the alkali metal) per 1000 parts by weight of the polyester.

REFERENCES:
patent: 2921051 (1960-01-01), Amborski et al.
patent: 3372143 (1968-03-01), Terada et al.
patent: 3627867 (1971-12-01), Schwarz
patent: 3663512 (1972-05-01), Uebe et al.
patent: 3673144 (1972-06-01), Weissermel et al.
patent: 3746686 (1973-07-01), Marshall et al.
patent: 3869427 (1975-03-01), Meschke et al.

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