Stock material or miscellaneous articles – Composite – Of silicon containing
Patent
1993-02-05
1995-02-28
Nakarani, D. S.
Stock material or miscellaneous articles
Composite
Of silicon containing
428263, 428266, 428268, 428289, 4283126, 428379, 428383, 428389, 428391, 428392, 428429, 428436, 428524, 428922, B32B 1706
Patent
active
053936108
ABSTRACT:
A method for stabilizing shelf life conductivity of conductive coatings such as polypyrrole or nickel sulfide on a substrate such as fiberglass, by incorporating in such conductive coating a polyphenol or a polysiloxane. The polyphenol is derived from a phenolic material in the form of a phenol-formaldehyde monomer or an oligomer of phenol-formaldehyde, and the polysiloxane is derived from a siloxane. Upon heating, the phenolic material cures to a polyphenol and the siloxane is converted to a polysiloxane, forming the stabilizing material on the conductive polypyrrole or nickel sulfide coated substrate. The phenolic material is preferably incorporated directly into the solution formulation for preparing the conductive nickel sulfide or polypyrrole on the substrate, and the polyphenol stabilizer is formed together with the conductive coating on the substrate by heating. In the case of the silane or siloxane material, the conductive polypyrrole or nickel sulfide preferably is formed first on the substrate, and the conductive coated substrate is contacted with a solution of the siloxane followed by heating to convert the siloxane to a polysiloxane protective overcoating.
REFERENCES:
patent: 4617228 (1986-10-01), Newman et al.
patent: 4692225 (1987-09-01), Witucki et al.
patent: 5002824 (1991-03-01), Warren
Cunningham Patricia H.
Monney Lyle V.
Moran William P.
Witucki Edward F.
Geldin Max
Ginsberg Lawrence N.
Nakarani D. S.
Rockwell International Corporation
Silberberg Charles T.
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