Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1985-09-30
1990-07-31
McCamish, Marion C.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
428224, 428234, 428397, C07C 324
Patent
active
049448544
ABSTRACT:
Continuous processes for the preparation of electrets and the products produced thereby, including filter fabrics, are disclosed. The process employs a continuous film or continuous filaments in the form of a tightly packed warp having a warp density as determined by light transmission of not more than 40%. The continuous film or continuous filament in the form of a tightly packed warp are continuously fed one or more times through a corona charging station having electrodes disposed on both sides of the material being treated, the material being treated being simultaneously heated while being subjected to a corona discharge of from 6 KV to 20 KV direct current.
REFERENCES:
Kirk-Othmer-Encyclopedia of Chemical Technology, "Air Pollution Methods", 3rd Ed., vol. 1, p. 693.
Felton Clinton D.
Gibson Baylor D.
Jamison Charles E.
McWhorter William O.
Serad George A.
Celanese Corporation
McCamish Marion C.
Stine Forrest D.
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