Nof Corporation

Kouhei Sawada

Show Onodera

Koji Kada

Shinji Nakamura

Kayoko Honda

Hideki Kawamoto

Hideyuki Nomura

Yasunobu Tagami

Naoshi Takahashi

Masayuki Saitoh

There are provided a surface-coated copper filler having an excellent oxidation resistance for use in a conductive composition, a method for producing the surface-coated copper filler, and a conductive composition containing the surface-coated copper filler. The surface-coated copper filler comprises: a copper particle; a first coating layer containing an amine compound, which is bonded to copper on a surface of the copper particle via a chemical bond and/or a physical bond; and a second coating layer containing an aliphatic monocarboxylic acid having 8 to 20 carbon atoms, which is bonded to the amine compound via a chemical bond. The amine compound is represented by the following formula (1):HNCHNHCHNH&#x2003;&#x2003;(1)wherein m is an integer of 0 to 3, n is an integer of 0 to 2, m is 0 to 3 when n is 0, and m is 1 to 3 when n is 1 or 2.

Surface-coated copper filler, method for producing same and conductive composition

The present invention provides a low melting point tin salt of aliphatic monocarboxylic acid obtained by a process comprising, reacting an aliphatic monocarboxylic acid having 4 to 30 carbon atoms or its salt and an inorganic tin compound so as to prepare a tin salt of aliphatic monocarboxylic acid, and bringing the tin salt in contact with an oxygen supplying substance.

Low melting point tin salt of carboxylic acid and method for producing the same

The present invention provides an organic acid metal salt obtained by reacting a saturated monocarboxylic acid or its salt and an inorganic magnesium compound. The saturated monocarboxylic acid or its salt contains at least 97 wt % of a saturated monocarboxylic acid having 4 to 10 carbon atoms or its salt, and the organic acid metal salt contains at least 99 wt % of an organic acid magnesium salt. This organic acid metal salt consists essentially of an organic acid magnesium salt, and has excellent solubility in an alcohol solvent or a mixed solvent containing at least 5 wt % of an alcohol solvent and excellent temporal stability when being formed into a coating liquid for forming a magnesium oxide film. A coating film obtained from this coating liquid has excellent uniformity and provides a highly transparent magnesium oxide film having a thickness suitable for practical use by baking. At the time of baking after coating, there is no solvent residue in the film and environmental pollutant gas such as NOx is not emitted.

Organic acid metal salt and coating liquid containing the same for forming a metal oxide film

An aqueous coating liquid for forming a magnesium oxide film comprising (a) a magnesium carboxylate derived from a carboxylic acid having 1 to 6 carbon atoms, (b) a surfactant, (c) a polyhydric alcohol compound, and (d) a solvent made substantially of water, wherein the magnesium carboxylate is contained in a ratio of 5 wt % or more and 50 wt % or less. The surfactant is contained in a ratio of 0.01 wt % or more and 2.5 wt % or less, and the polyhydric alcohol compound is contained in a ratio of 0.05 wt % or more and 40 wt % or less, based on a weight of the entire coating liquid. The magnesium carboxylate content is the same with or larger than that of the polyhydric alcohol compound, and a total weight of the magnesium carboxylate and the polyhydric alcohol compound is 80 wt % or less of the weight of the entire coating liquid; and wherein the magnesium carboxylate, the surfactant, and the polyhydric alcohol compound are dissolved in the solvent.

Aqueous coating liquid for forming a magnesium oxide film

An ester wax is obtained by a condensation reaction of carboxylic acid and alcohol; wherein the carboxylic acid contains a single kind of saturated linear monocarboxylic acid having 14 to 30 carbon atoms as a main component, and the single kind of carboxylic acid is contained in a ratio of 60 wt % or more of the entire carboxylic acid; the alcohol contains a single kind of saturated linear monohydric alcohol having 14 to 30 carbon atoms or a single kind of polyhydric alcohol having 2 to 6 hydroxyl groups and having 2 to 30 carbon atoms as a main component, and when the monohydric alcohol is the main component, the monohydric alcohol is contained in a ratio of 60 wt % or more of the entire alcohol, and when the polyhydric alcohol is the main component, the polyhydric alcohol is contained in a ratio of 80 wt % or more of the entire alcohol; and the ester wax has an acid value of 3 mgKOH/g or less, and a hydroxyl value of 5 mgKOH/g or less, and a maximum peak temperature in a differential thermal curve is in a range from 55&deg; C. to 90&deg; C.

Ester wax and toner using the wax

The present invention provides a method for coating wax or resin particles with metallic soap, wherein (a) a water dispersion of wax or resin particles, the dispersion containing water-soluble fatty acid soap, and (b) an aqueous solution or a water dispersion of a polyvalent metal compound are mixed in such a manner that an equivalent ratio of the polyvalent metal compound to the water-soluble fatty acid soap is 0.5 to 1.5.

Method for coating wax or resin particles with metallic soap

There are disclosed metallic soap fine particles which have an average particle size of 4 .mu.m or smaller and have a content of particles having particle sizes of 10 .mu.m or larger of at most 4% by weight based on the whole metallic soap fine particles; a process for producing the metallic soap fine particles, comprising mixing (a) an aqueous solution containing 0.001 to 20% by weight of an alkali metal salt or an ammonium salt of a fatty acid having 4 to 30 carbon atoms with (b) an aqueous solution or dispersion containing 0.001 to 20% by weight of an inorganic metal salt at a specific temperature to form a slurry of the metallic soap, and drying the resultant slurry at a specific temperature. The metallic soap, which has remarkably fine particles and narrow particle size distribution, is well suited for use e.g. as a toner additive in an electrophotographic copying machine by virtue of the improvements in blocking resistance, fluidity and eliminability of the toner, and also as a cleaning aid in the same owing to the improvement in cleaning performance for residual toner without impairing the surface of a picture image support.

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Hyogo, Japan

Kouhei Sawada