Method of deforming thermoplastic polymers using ammonia as a re

Details Method of deforming thermoplastic polymers using ammonia as a re Method of deforming thermoplastic polymers using ammonia as a re

1979-07-12

1981-06-16

Czaja, Donald E.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

260 324, 264102, 2642106, 528490, D01F 102

Patent

active

042737397

ABSTRACT:
Ammonia is utilized as a reversible plasticizer in the deformation of theplastic polyamides so as not to degrade the mechanical properties of the deformed material. It may be retained in the material under pressure and/or low temperature during extrusion or other deformation processes and is spontaneously released with time and at reduced pressure and/or elevated temperature at the end of the process, such as at the exit side of an extruder die.

REFERENCES:
patent: 2061565 (1936-11-01), Dreyfus
patent: 2965437 (1960-12-01), Blomberg
patent: 3852392 (1974-12-01), Davis et al.
patent: 4129416 (1978-12-01), Bennett et al.

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