Coating processes – Interior of hollow article coating – Coating by vapor – gas – mist – or smoke
Patent
1991-01-18
1993-04-13
Lusignan, Michael
Coating processes
Interior of hollow article coating
Coating by vapor, gas, mist, or smoke
264 83, 264340, 427223, 425 74, B05D 722
Patent
active
052021610
ABSTRACT:
A process for treating a container comprised of a normally solid, polymer surface with a sulfur-containing compound is carried out by contacting the surface at a temperature of about 120.degree. to about 140.degree. F. with a sulfur-containing compound. Subsequently, the surface is contacted with a neutralizing agent. The process is conducted for a such a period of time and with such concentrations of the sulfur-containing compound and the neutralizing agent that the container has average permeability to unleaded gasoline having octane number of 93 of not greater than about 0.021 g/hr.
The surface, after the treatment, comprises about 700 to about 1800 micrograms of sulfur per square inch of the surface and it is penetrated by the sulfur-containing compound to an average depth of at least about 15 microns.
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Nulman Mark
Seizert Robert D.
VanVolkom Glenn T.
Lusignan Michael
Solvay Automotive, Inc.
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