Method of improving the electrical conductivity of shaped resin articles and an electrostatic coating process

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The resin that can be used in this invention includes a variety of resins which provide for high surface resistivity values, such as polyolefin resins, e.
g.
polyethylene, polypropylene, rubber-containing polypropylene (containing an ethylene-propylene copolymer rubber), etc.
, ABS resin, acrylic resin, polyamide resin, polyvinyl chloride resin, polycarbonate resin, polyacetal resin, phenolic resin, and so on.
The nitrogen-containing compound of general formula (1) includes a variety of amides such as N,N-dimethylaminopropyloctylamide, N,N-diethylaminopropyloctylamide, N,N-diethylaminoethyloctylamide, N,N-dibutylaminopropyloctylamide, N,N-dibutylaminoethyloctylamide, N,N-dimethylaminopropyllaurylamide, N,N-diethylaminopropyllaurylamide, N-N-diethylaminoethyllaurylamide, N,N-dibutylaminopropyllaurylamide, N,N-dibutylaminoethyllaurylamide, N,N-dimethylaminopropylmyristylamide, N,N-diethylaminopropylmyristylamide, N,N-diethylaminoethylmyristylamide, N,N-dibutylaminopropylmyristylamide, N,N-dibutylaminoethylmyristylamide, N,N-dimethylaminopropylpalmitylamide, N,N-diethylaminopropylpalmitylamide, N,N-diethylaminoethylpalmitylamide, N,N-dibutylaminopropylpalmitylamide, N,N-dibutylaminoethylpalmitylamide, N,N-dimethylaminopropylstearylamide, N,N-diethylaminopropylstearylamide, N,N-diethylaminoethylstearylamide, N,N-dibutylaminopropylstearylamide, N,N-dibutylaminoethylstearylamide and so on.
These amides can be produced by reacting saturated fatty acids of 7-23 carbon atoms with an N,N-dialkylaminoalkylamine such as N,N-dimethylaminopropylamine, N,N-diethylaminopropylamine, N,N-diethylaminoethylamine, N,N-dibutylaminopropylamine, N,N-dibutylaminoethylamine, and so on.
This reaction can be carried out by any known amidation reaction.
Thus, this reaction proceeds as said reactants are heated together at a temperature of 140.
degree.
-200.
degree.
C.
The progress of reaction can be monitored by determining the total amine value, tertiary amine value and acid value