Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Conveying or aligning particulate material
Patent
1995-03-21
1996-11-05
Thurlow, Jeffery R.
Plastic and nonmetallic article shaping or treating: processes
Direct application of electrical or wave energy to work
Conveying or aligning particulate material
264446, 264469, 264478, 264483, 264104, 264131, 427491, 427536, 4251748E, B29C 3508
Patent
active
055714722
ABSTRACT:
A nitrogen-containing compound of the following general formula (1) is kneaded into a resin molding material, the kneaded mixture is molded, and the surface of the resulting article is subjected to corona discharge treatment. Then, an electrostatically charged coating is sprayed on the article. ##STR1## wherein R.sup.1 represents an alkyl group of 6-22 carbon atoms, R.sup.2 and R.sup.3 may be the same or different and each represents an alkyl group of 1-4 carbon atoms; n represents 2-3. In accordance with this invention, a shaped resin article with remarkably improved electrical conductivity can be obtained from a resin of low electrical conductivity substantially without affecting the physical properties and color of the resin and with high productivity. Furthermore, a resin article with high surface resistivity can be electrostatically coated with high coating efficiency and improved results in appearance and productivity substantially without affecting the physical properties of the resin.
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Dai-Ichi Kogyo Seiyaku Co. Ltd.
Thurlow Jeffery R.
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