Process for preparing polyester shaped articles

Details Process for preparing polyester shaped articles Process for preparing polyester shaped articles

1974-08-26

1976-06-01

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

260 75T, 264 95, 264216, 264237, 264290R, B29C 2500, B29D 2304

Patent

active

039610080

ABSTRACT:
A process for preparing a shaped article by melt-extruding a polyester containing tetramethylene naphthalene-2,6-dicarboxylate or hexamethylene naphthalene-2,6-dicarboxylate as a main recurring unit, wherein the extrudate is exposed to a temperature of 75.degree. to 450.degree.C. for 1 to 180 seconds immediately after extrusion.

REFERENCES:
patent: 2936492 (1960-05-01), Swerlick et al.
patent: 3243486 (1966-03-01), Pilaro
patent: 3377319 (1968-04-01), Wiener
patent: 3683060 (1972-08-01), Tanabe et al.
patent: 3754067 (1973-08-01), St.Eve et al.

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