Bis:cationic acid amide and imide cpds. - used as charge transfer agents in toner and charge controllers for powder and powder paint

摘要

Charge transfer agents for toners and developers used in electrophotographic copying and printing of data stored in an electronic, optical or magnetic system or in colour proofing and charge control agents for powder and powder paints are bis-cationic acid amide and imide derivs. of formula (I), (II) and/or (III): R1-8 independently = H or a hydrocarbon gp., opt. contg. a hetero-atom; KR1R2 and K'R4R5 may = a ring system; if R1R2, R4 or R5 is connected to K or K' by a double bond, R3 or R6 is absent and/or one of R1-3 with R7 or R4-6 with or R8 = a 2-5C aliphatic bridge; A, A' and W1 = divalent, W2 = a tetravalent and W3 = a trivalent bridge based on a hydrocarbon, opt. contg. hetero-atoms, and W1 may also = a direct bond; K and K' independently = N, P, As or Sb; X(-) the stoichiometric equiv. of (in)organic or (un)mixed anion(s). USE/ADVANTAGE - (I), (II) and (III) are colourless. The claims include their use in powders and paints for coating metals, wood, plastics, glass, ceramics, cement concrete, textiles, paper or rubber, esp. in triboelectric or electrokinetic spray powder paints. They have high and constant charge control properties, excellent temp. stability and very good dispersibility. They can be synthesised more economically than the usual charge control agents.