Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1981-09-14
1983-07-26
Hoffman, James R.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427 40, B05D 304, B08B 1702
Patent
active
043954340
ABSTRACT:
The invention provides a novel and efficient method for modifying the surface properties of a shaped article of a synthetic resin such as a polyvinyl chloride resin in which a remarkable anti-static effect is obtained on the surface so that accumulation of static electricity on the surface is greatly reduced. The inventive method comprises exposing the surface of the shaped article to a low temperature plasma generated in a gaseous atmosphere containing a nitrogen-containing organic compound such as an amine, acid amide, diamine and heterocyclic organic compound having at least one nitrogen atom in a molecule as the ring member at a pressure from 0.001 to 10 Torr. The gas or vapor of the above mentioned nitrogen-containing organic compound is preferably diluted with an inorganic gas. The effectiveness of the above described plasma treatment is further enhanced when the plasma-treated surface of the shaped article is subsequently brought into contact with a halogen, a hydrogen halide or an organic halogen compound, e.g. chlorine, hydrogen chloride, hydrogen bromide and allyl chloride, preferably, in a gaseous phase at a pressure of at least 10 Torr.
REFERENCES:
patent: 4072769 (1978-02-01), Lidel
patent: 4261806 (1981-04-01), Asai et al.
Imada Kiyoshi
Nomura Hirokazu
Ueno Susumu
Hoffman James R.
Shin-Etsu Chemical Co. , Ltd.
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