MIXED CYCLIC PHENOL SULFIDES, AND CHARGE CONTROL AGENTS AND TONERS USING THE SAME
申请人:Yasumura Masateru
公开号:US20090035678A1
公开(公告)日:2009-02-05
The present invention discloses a mixed cyclic phenol sulfide which is a mixture of the cyclic phenol sulfide wherein m is 8 and the cyclic phenol sulfide wherein m is an integer other than 8, the cyclic phenol sulfide being represented by the following formula (1):
wherein R is a straight or branched alkyl group having 1 to 6 carbon atoms, and m is an integer from 4 to 9; or a cyclic phenol sulfide of formula (1) wherein m is 8. The present invention also discloses a charge control agent which comprises the above sulfide(s) as the active ingredient; and a toner which comprises the charge control agent, a coloring agent and a binder resin. This charge control agent is particularly useful for color toners, and it speeds up charging risetime, and has a high charge amount and charging characteristics excellent in the environmental stability. Further, the charge control agent is safe since it does not have any problem with the waste regulations.
US7901858B2
申请人:——
公开号:US7901858B2
公开(公告)日:2011-03-08
Smereczynski,K. et al., Bulletin de l'Academie Polonaise des Sciences, Serie des Sciences Chimiques, 1967, vol. 15, p. 65 - 69