Answers to the Familiar Questions

	How about the stability of the complex-drier?
	It has formed the steady chelate of 5 or 6 member of ring ,so it can stored by itself below 0℃ for a long time without precipitation. After storing in coating for a year, its technological indexes do not change except that its viscidity increases slightly.
	Why can the complex-drier completely replace the Co drier?
	A multivalent metal has been selected to the production of the complex-drier. Its synergic function with organic acid is several times better than that of Co metal. So it can save quantity but get the excellent result.
	Why can the complex-drier get the excellent effect?
	Because it is scientifically complexed, not just simple mixture.  It is really a new omnipotent drier for coatings.
	What quantity is needed in using the complex-drier?
	Generally, the using quantity is about 0.20% to 0.60%(account for the total quantity of coating). In alkyd varnish & white alkyd enamels, its using quantity in coatings is only one-tenth of the total traditional driers.
	How to use the complex-drier for paint and coatings?
	For example, in the alkyd varnish or white alkyd enamel of the medium oil, the using quantity of the complex-drier only needs 0.20-0.40% of its total coating quantity. For some coloured-paints such as blue & green is 0.45% or so. The black paint is 0.50% because of the physical adsorption of carbon black pigment. The red paint is 0.60% because of the complexation reaction between metal and pigment such as scarlet & toluidine red. As to new coatings, it is convenient to find out the best suitable quantity by selecting three points of using quantity of the complex-drier at 0.05-0.10% interval in expecting value to test.