A method of improving the electrical conductivity of shaped resin articles and an electrostatic coating process
申请人:DAI-ICHI KOGYO SEIYAKU CO., LTD.
公开号:EP0675505A1
公开(公告)日:1995-10-04
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.
wherein R¹ represents an alkyl group of 6-22 carbon atoms, R² and R³ 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.
将以下通式(1)的含氮化合物混入树脂成型材料中,然后将混合物成型,并对成型品的表面进行电晕放电处理。然后在制品上喷涂静电涂层。
其中,R¹代表6-22个碳原子的烷基,R²和R³可以相同或不同,各自代表1-4个碳原子的烷基;n代表2-3。
根据本发明,可以在不影响树脂的物理性质和颜色的情况下,从导电率低的树脂中获得导电率显著提高的异型树脂制品,而且生产效率高。此外,在不影响树脂物理性质的情况下,可以对表面电阻率高的树脂制品进行静电涂布,涂布效率高,外观和生产率也得到改善。