Process for producing high tenacity polyhexamethylene adipamide

Details Process for producing high tenacity polyhexamethylene adipamide Process for producing high tenacity polyhexamethylene adipamide

1985-06-14

1987-10-27

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

26417717, 26417719, 2642107, 2642108, 26421114, D01D 5092, D01D 5253

Patent

active

047028750

ABSTRACT:
A polyhexamethylene adipamide yarn characterized by a tenacity greater than 4.5 g/den., an elongation of from 25-40% constituent ribbon cross-section filaments having a length to width ratio greater than 3 from 9 process for making such yarn including a delayed quench and a two-stage hot chest draw.

REFERENCES:
patent: 2273105 (1942-02-01), Heckert
patent: 2939201 (1960-06-01), Holland
patent: 3067458 (1962-12-01), Dauchert
patent: 4225299 (1980-09-01), Roberts
patent: 4485063 (1984-11-01), Good
patent: 4524368 (1985-07-01), Makansi

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