Orient Chemical Industries, Ltd.

Tohru Tsuruhara

Kazuaki Sukata

Shun-ichiro Yamanaka

Shuji Sugawara

Masashi Yasumatsu

Tetsuji Kihara

Akihide Isoda

Akihiro Tada

Akihiko Hayashi

Hiroshi Takeuchi

Charge control resin particles comprising a mixture of at least a charge control agent and a resin, wherein a crystalline zinc 3,5-di-tert-butylsalicylate represented by General Formula below, and having major peaks of X-ray diffraction using the CuK&#x3b1;-characteristic X-ray at Bragg angles 2&#x3b8; of at least 6.4&#xb1;0.2&#xb0; and 15.4&#xb1;0.2&#xb0;, is contained as said charge control agent. Toner for developing electrostatic images which comprises a coloring agent, a binder resin for toner, and the charge control resin particles. 

Change control resin particles and toner for developing electrostatic images

Charge control agent whose active ingredient is a zinc compound of an alkylsalicylic acid derivative, the compound being a zincified alkylsalicylic acid derivative which is an alkylphenol derivative having a carboxyl group introduced thereto; Toner for developing electrostatic images, comprising said charge control agent, a coloring agent and a binder resin for toner; Charge control resin particles comprising solidified milled particles of a thermally kneaded mixture of at least said charge control agent and a resin.

Charge control agent, manufacturing process thereof, charge control resin particles and toner for developing electrostatic images

Monoazo metal complex compound containing composition, the incidence of skin sensitization in a skin sensitization potential test based on the maximization method of said composition being not more than 20% and method for producing said composition which comprises a step for removing impurity substances using an alcoholic organic solvent; charge control agent comprising said composition and toner containing said charge control agent; coloring agent containing said composition and colored thermoplastic resin composition containing said coloring agent.

Monoazo metal complex compound containing composition and production method thereof

Colored thermoplastic resin composition and related arts thereof

Monoazo metal compound of formula [I] which is excellent in charge control or charge-enhancing property, and toner for developing electrostatic images and powdery paint for electrostatic painting incorporating thereof:

Monoazo metal compound, composition thereof, charge control agent, toner

Positively-chargeable charge control agent and toner for developing electrostatic images that comprises a coloring agent, a resin for toners, and said positively-chargeable charge control agent. The positively-chargeable charge control agent comprises a metal complex salt or metal complex of an aromatic dicarboxylic acid having at least 1 perfluoroalkyl group, wherein the central atom of the metal complex salt or metal complex is a trivalent metal.

Positively-chargeable charge control agent and toner for developing

Metal compound of formula [I] which is excellent in charge control or charge-enhancing property, and toner for developing electrostatic images and powdery paint for electrostatic painting incorporating thereof: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represent a hydrogen, a linear or branched alkyl group, or a linear or branched unsaturated alkyl group; R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, and R.sup.3 and R.sup.4 may bind together to form an aromatic or aliphatic ring which may have one or more substituents of a linear or branched alkyl group, or a linear or branched unsaturated alkyl group; M represents a metal; m represents an integer of 3 or more; n represents an integer of 2 or more.

Metal compound of aromatic hydroxycarboxylic acid, charge control agent,

Monoazo metal compound of formula �I! which is excellent in charge control or charge-enhancing property, and toner for developing electrostatic images and powdery paint for electrostatic painting incorporating thereof:

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Osaka, Japan

Tohru Tsuruhara