Compositions – Electrically conductive or emissive compositions
Patent
1991-06-12
1993-06-15
Lieberman, Paul
Compositions
Electrically conductive or emissive compositions
252512, 252518, 427400, 524186, 524217, 524284, H01B 100
Patent
active
052194930
ABSTRACT:
The invention relates to a surface treatment composition and a method of using the composition to provide the treated surface with a suitable surface conductivity for electrostatic painting of the surface. The surface treatment composition preferably comprises a mixture of: (a) a substituted or unsubstituted aromatic polycarboxylic acid, anhydride or salt thereof, and (b) a quaternary ammonium salt or (b') an ethoxylated tertiary fatty amine, in a compatible vehicle, said composition having a pH of below about 4.5, said polycarboxylic acid and said quaternary ammonium salt or ethoxylated fatty amine each being present in said composition in an amount effective to impart to said thermoplastic surface a resistivity value of between about 10.sup.8 ohms/cm.sup.2 and about 10.sup.12 ohms/cm.sup.2, or a 90% electrostatic charge decay time of less than five seconds, or both.
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Elect. Cond. & Therm. Power, Japanese Journal of Applied Physics, pp. 647-649, Apr. 1, 1991.
Henkel Corporation
Jaeschke Wayne C.
Kopec M.
Lieberman Paul
Szoke Ernest G.
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