Abstract: A pencil lead and a pencil containing the pencil lead wherein the pencil lead is polymer-based, extrudable, non-expanded, non-calcined and comprises graphite, of which 25% to 100% by weight or 50% to 100% by weight of the graphite, in relation to the total weight of the graphite, is expanded graphite.

Abstract: A pencil lead includes an organic-inorganic hybrid resin inside fine pores of a porous lead body. A colorant may also be included inside the fine pores. The organic-inorganic hybrid resin is preferably a silica-organic hybrid resin.

Abstract: Provided is a color pencil lead which is excellent in a hue, a light resistance and a strength and can be erased with an eraser and which is suited to pencil leads for mechanical pencils and wooden pattern holder pencils. The above color pencil lead is characterized by containing a resin in which a dye is dissolved or included in a pencil lead body.

Abstract: A pencil lead containing flake graphite which has an ab face having a flatness of at least 2 ?m or less and in which an aspect ratio of an a axis or a b axis in the ab face to a c axis is 5 or more is provided with a structure in which nanoparticles having a mv value of 0.05 to 2 based on 100 of a volume average diameter (mv value) of the graphite and having a sphericity of 0.1 to 20 nm or nanoparticles having a mv value of 0.05 to 2 based on 100 of a volume average diameter (mv value) of the graphite and having a specific surface area of 200 to 600 m2/g are brought into contact with the ab face of the graphite or a structure in which they are adhered to the ab face of the graphite.

Abstract: A pencil lead containing flake graphite which has an ab face having a flatness of at least 2 ?m or less and in which an aspect ratio of an a axis or a b axis in the ab face to a c axis is 5 or more is provided with a structure in which nanoparticles having a my value of 0.05 to 2 based on 100 of a volume average diameter (my value) of the graphite and having a sphericity of 0.1 to 20 nm or nanoparticles having a my value of 0.05 to 2 based on 100 of a volume average diameter (my value) of the graphite and having a specific surface area of 200 to 600 m2/g are brought into contact with the ab face of the graphite or a structure in which they are adhered to the ab face of the graphite.

Abstract: The invention relates to aqueous pigment preparations containing (A) at least one organic and/or inorganic pigment, (B) a dispersant of formula (I) or (II), or mixtures of the dispersants of formula (I) and (II), (C) optionally wetting agents, (D) optionally other surfactants and/or dispersants, (E) optionally one or more organic solvents or one or more hydrotropic substances, (F) optionally other additives used conventionally for the production of aqueous pigment dispersions and (G) water.

Abstract: The invention relates to a pigment preparation containing (a) 50-99 percent by weight of at least one pigment, (b) 1 to 50 percent by weight of an additive based on polyalkylene glycols, and (c) 0 to 10 percent by weight of an auxiliary agent from among the group comprising fillers, fire retardants, preservatives, light-stability agents, pigmentary and non-pigmentary dispersing agents, surfactants, antioxidants, foam inhibitors, resins, and antistatic agents, the percentages being in relation to the total weight of the pigment preparation. The additive that is based on polyalkylene glycols corresponds to formula Z?-[-(AO—)n1—B-T-X—Y]m—Z (1), wherein AO represents a C2-C10 alkyleneoxy unit, B represents a C2-C10 alkylene radical, and T represents —NR—, X represents one of the groups (formula), and Y represents a chemical bond or —NR3—.

Abstract: An unburnt color lead for writing devices, drawing devices and painting devices, includes at least one coloring material, at least one binder, at least one organic lubricant which is solid at room temperature, and at least one filler material whose particles essentially have a disk-shaped configuration. The color lead contains 20 to 80 weight % of the at least one filler material, and the color lead contains at least 20 weight % hexagonal bornitride as a first filler material.

Abstract: There is provided a transparent solid marker that has high bending strength and low writing resistance as stick-formed goods, is difficult to break or bend, generates few remnants while coating is carried out, and does not cause spreading of a writing surface even if it is coated on a surface which is written on by oily or aqueous writing implements. There is provided a transparent solid marker that is obtained by heating and mixing a composition including a gel forming material that includes an alkali metal salt or ammonium salt of an aliphatic carboxylic acid having 8 to 36 carbon atoms, a transparency agent, a subsidiary transparency agent, hydrogenated glucose syrup, a basic pigment, and oil, and cooling it.

Abstract: A solid drawing material containing a gel-forming substance of an alkali metal salt or an ammonium salt of an aliphatic carboxylic acid having 8 to 36 carbon atoms, an alkoxylated nitrogen-containing compound, a reduced starch saccharide, and a coloring agent. The solid drawing material which is in the form of a stick features a large strength, a small drawing resistance, is less subject to be collapsed or broken, produces little shavings while drawing, makes it possible to favorably form a drawing even on smooth surfaces such as windowpanes, and of which the traces after drawn can be easily wiped out with a wet cloth.

Abstract: A process for the production of leads which contain pigments and/or effect substances, wherein pigments and/or effect substances are mixed with fillers and further lead ingredients, the resulting material is homogenised and then extruded to provide extrusions of predetermined diameter, wherein then the extruded portions are dried optionally after adjustment of the extrusion length to a constant weight, wherein at least a proportion of the pigment and/or effect material is brought into contact with a polysaccharide solution and an aqueous solution of a precipitation agent prior to admixing of the further ingredients, the mixture is dried and then optionally ground.

Abstract: For the improvement of moldability of a lead and bending strength of a lead, a non-calcined lead of a colored pencil contains a colorant, a binder, a body filler, waxes and/or oils, and a hydrophilic surfactant, and as a hydrophilic surfactant, a polyethylene additive of oils is contained. For the improvement of water resistance, a non-calcined lead of a colored pencil contains a colorant, a binder, a body filler, waxes and/or oils, and a hydrophilic surfactant, and further, a water repellent substance. Further, as a non-calcined lead of a colored pencil with easy quality control process, it contains plate type alumina and/or plate type alumina hydrate.

Abstract: A method for increasing the tensile, breaking and flexural strength of coloured leads. The method is characterized in that 1 to 50 percent by weight alkyl and/or hydroxyalkyl cellulose which are soluble in organic solvents and whose alkyl radicals can be straight-chained or branched are added to the lead substance. The invention also relates to coloured pencils containing said coloured leads.

Abstract: The ink set for ink jet recording of the present invention, which exhibits a high recorded image quality, an excellent image preservability (heat stability, light fastness, oxidation resistance) and little change of color balance with time, and an ink jet recording method using same, and which comprises a plurality of inks containing a dye, a water-miscible organic solvent and water, wherein the ink set comprises at least yellow, magenta, cyan, black and dark yellow inks, and the dark yellow ink contains at least one of a magenta-azo dye having a specific structure having a 6-membered heterocyclic group connected to diazo group and a cyan dye having a specific structure.

Abstract: Disclosed is a process for producing a sintered color pencil lead characterized by pigmenting a white or light-colored porous sintered pencil lead with an organic pigment by treating said porous sintered pencil lead with a solution of at least one compound of the following Formula (I) to be filled with said compound and then by forming said organic pigment within the pores by means of heating, A(B)x in which x is an integer from 1 to 8, A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, indanthrone, isoindolinone, isoindoline, dioxazine, azo series, phthalocyanine or diketopyrrolopyrrole which is attached to x groups B via one or more heteroatoms selected from the group consisting of N, O and S and forming part of the radical A, B is hydrogen or a group of the formula where at least one group B is not hydrogen and, if x is 2 to 8, all the groups B can be identical or different, and L is any suitable solubilizing group.

Abstract: Provided is a baked color pencil lead which comprises a baked lead obtained by impregnating pores of a porous baked lead comprising at least a filler with a solution containing a polysiloxane having a structural unit represented by the following Formula (I) and subjecting it to heat treatment in an oxidation atmosphere and/or a non-oxidation atmosphere and a colorant filled into the pores of the resultant baked lead and which is excellent in mechanical strength (bending strength, tensile strength, impact strength and the like) while exhibiting a satisfactory coloring power and sufficient drawn line density: wherein R1 and R2 each represent an alkyl group, an alkoxy group, a hydroxy group or a siloxane group, and they may be the same or different.

Abstract: For the improvement of moldability of a lead and bending strength of a lead, a non-calcined lead of a colored pencil contains a colorant, a binder, a body filler, waxes and/or oils, and a hydrophilic surfactant, and as a hydrophilic surfactant, a polyethylene additive of oils is contained. For the improvement of water resistance, a non-calcined lead of a colored pencil contains a colorant, a binder, a body filler, waxes and/or oils, and a hydrophilic surfactant, and further, a water repellent substance. Further, as a non-calcined lead of a colored pencil with easy quality control process, it contains plate type alumina and/or plate type alumina hydrate.

Abstract: A process for producing a baked color pencil lead, comprising dipping a white or pale color porous baked lead having a volume-based median pore diameter of 0.27 &mgr;m or less in a dye ink and then applying a pressure of 1.5 MPa or more thereto to impregnate pores of the above baked lead with the dye ink, in particular, a process for producing a baked color pencil lead, comprising impregnating the pores thereof with a dye ink solution containing as the solvents 35 to 90% by weight of at least one of non-volatile solvents represented by the following Formulas (I) to (III) based on the ink solution and a low boiling organic solvent by applying pressure and then drying the above low boiling organic solvent, and a color pencil lead obtained by the above process: CH3(CH2)7CH═CH(CH2)7CH2OH  (I) R1O(CH2CH2O)nH  (II) in Formula (II), R1 represents decanoyl, undecanoyl, lauroyl, tridecanoyl or oleoyl, and n is 4.

Abstract: A non-calcined lead of a colored pencil obtainable by following process: a binder or its solution are added to a mixture comprising a colorant, a body filler, and a solvent as required, and the resultant mixed compound is kneaded, after that, the said solvent is removed, and the resultant mixture is mixed together with O/W emulsion comprising an oily substance being a liquid at ordinary temperature, one or more surfactant(s) having a H.L.B value of not less than 7 nor more than 18 and water, the mixed ingredients are formed, and the water contained in the said O/W emulsion and the said solvent if any remains is removed. A synthetic mica is, contained as a lubricant, and the said body filler is at least one compound selected from the group consisting of wollastonite, attapulgite, haloysite kaolin and sepiolite.

Abstract: Provided is a baked color pencil lead which comprises a baked lead obtained by impregnating pores of a porous baked lead comprising at least a filler with a solution containing a polysiloxane having a structural unit represented by the following Formula (I) and subjecting it to heat treatment in an oxidation atmosphere and/or a non-oxidation atmosphere and a colorant filled into the pores of the resultant baked lead and which is excellent in mechanical strength (bending strength, tensile strength, impact strength and the like) while exhibiting a satisfactory coloring power and sufficient drawn line density: 1

Abstract: A non-calcined lead of a colored pencil obtainable by following process:

Abstract: A non-calcined lead of a colored pencil obtainable by following process: a binder or its solution are added to a mixture comprising a colorant, a body filler, and a solvent as required, and the resultant mixed compound is kneaded, after that, the said solvent is removed, and the resultant mixture is mixed together with O/W emulsion comprising an oily substance being a liquid at ordinary temperature, one or more surfactant(s) having a H.L.B value of not less than 7 nor more than 18 and water, the mixed ingredients are formed, and the water contained in the said O/W emulsion and the said solvent if any remains is removed. A synthetic mica is contained as a lubricant, and the said body filler is at least one compound selected from the group consisting of wollastonite, attapulgite, haloysite kaolin and sepiolite.

Abstract: A pigment-containing oil-based gel material which contains 0.1 to 25% by weight of a hydroxy-fatty acid having 10 to 20 C atoms, 0.1 to 30% by weight of C30-45-alkylmethicone, 1 to 70% by weight of an oil component and 0.1 to 50% by weight of pigments is described.

Abstract: A marking composition suitable for marking colored substrates, especially dark substrates, is disclosed. The marking composition comprises a wax, a fatty acid, a reflecting filler, and a colorant selected from an oil soluble dye, an oil dispersable dye, or an oil dispersable pigment. A defoamer and a non-reflecting filler can be optionally included in the marking composition. For example, the marking composition can be provided in the form of crayons, colored pencils, and the like. A method of providing a mark on a colored substrate is also disclosed.