Large denier polyethylene terephthalate monofilaments having goo

Details Large denier polyethylene terephthalate monofilaments having goo Large denier polyethylene terephthalate monofilaments having goo

1974-06-17

1976-06-15

Tillman, Murray

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

264178F, 264210F, C08G 6318, C08G 6370

Patent

active

039636780

ABSTRACT:
Polyester monofilaments of 1000 to 10,000 denier per filament can be produced to have both good straight tenacity and good transverse properties (high loop tenacity) by extruding molten polyethylene terephthalate of at least 0.6 intrinsic viscosity through an air gap into a water bath to form a monofil and then drawing the monofil in two stages under controlled heating conditions to provide at least 0.190 average birefringence, measured along monofil diameters and a substantially lower birefringence value adjacent to the surface of the monofil. The monofilaments are suitable for use as reinforcement in tires, V-belts and other industrial applications.

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