109results about "Pencil leads" patented technology

The invention relates to a colour lead, graphite lead, colour chalk or graphite chalk for drawing and / or sketching, having a lead base comprising a wax, at least one filler and at least one colouring agent, wherein the lead base further comprises aluminium distearate and as a wax at least one functionalised metallocene polyolefin wax and at least one hardening wax.

Provided is a solid writing implement containing: a leuco-dye, a long-chain fatty acid ester, and a solvent capable of dissolving or dispersing the leuco-dye.

A lead is proposed for pencils for writing, drawing, decorating and / or cosmetic use that comprises binder, filler, colorant and other additives, constituents of the lead being as follows: 5 to 65 wt% of binder comprising polyhydroxybutyric acid and / or a copolymer with polyhydroxybutyric acid as first polymer and with a second polymer, 33 to 85 wt% of filler with colorant, 2 to 33 wt% of wax or waxes, 0 to 1 wt% of other additives such as stabilizers, lubricants.

A non-baked pencil lead comprising a filler, a pigment, a water-soluble resin, a crosslinking agent and a polycaprolactone.

This invention provides a non-fired pencil lead that offers sufficient writing strength even when the tip is sharpened, is less susceptible to deterioration due to moisture absorption, is erasable, and simultaneously achieves improved opacity and fixation of the written line—qualities not achievable with conventional methods. [Solution] A non-fired pencil lead characterized by containing a carboxymethylcellulose salt, a high-molecular-weight organic acid, and a powder.

Colored pencil lead, graphite lead, colored or graphite crayon for painting and / or drawing with a lead base containing waxes, at least one filler and at least one colorant, characterized in that the lead base further contains aluminium distearate and contains at least one functionalised metallocene polyolefin wax and at least one hardened wax.

To provide a fired pencil lead that offers a light and smooth writing feel, suppresses the spread of lead powder when rubbed, and produces a writing style that is less likely to smudge the paper. [Solution] A fired pencil lead is made in which a liquid that satisfies a specific relationship between the kinematic viscosity value at 40°C and the kinematic viscosity value at 100°C is impregnated into the pores of the fired core.

The invention provides a graphene resin refill and a manufacturing method thereof.The manufacturing method comprises the steps that thermosetting resin and thermosetting resin are added into a solvent and stirred through a high-speed stirrer to be dissolved, and a first mixed solution is obtained; adding a coloring agent, the modified graphene and a plasticizer into a solvent, quickly stirring, placing in an environment lower than zero DEG C for 1-10 hours, taking out, heating to 90-95 DEG C, and cooling to room temperature to obtain a second mixed solution; and adding the second mixed solution into the first mixed solution, stirring and evaporating the solvent at room temperature to 150 DEG C, grinding by using a three-roller mill to discharge moisture, and extruding a lead bar by using an extruder. According to the graphene resin refill, the chromaticity of writing marks is uniform, and the mechanical property is excellent.

Paste compositions with a water content of no more than 2% by weight, containing and / or consisting of (a) at least one colour pigment and / or one filler, (b) at least one alkoxylated carboxylic acid and, if applicable (c) at least one dispersant.

The pen refill comprises a pen refill body and a composite protection layer evenly wrapping the surface of the pen refill body, the composite protection layer comprises an inner protection layer and an outer protection layer, and the surface structure of the pen refill is stable through the combined action of the inner protection layer and the outer protection layer, that is, the condition that graphite powder falls off cannot occur on the surface of the pen refill through friction; and the hand and the box are prevented from being dirty. The invention further discloses a preparation method of the non-dirty pen refill, the pen refill body is fired by innovatively combining a low-temperature graphitization process in the step of preparing the pen refill body, and a high-temperature curing process and a surface curing process are added, so that the distribution stability of surface graphite is greatly improved, and the pen refill has the characteristic that the surface graphite is not easy to fall off; therefore, the non-dirty effect is achieved, and the dirty degree of the surface of the product is remarkably improved.

Solid preparation including: - a wax component consisting of at least one natural wax, - at least one hydrocarbon that is volatile at a temperature of 25°C and an air pressure of 1013 hPa and - at least one liquid oil at a temperature of 25°C and an air pressure of 1013 hPa with an oil / water interfacial tension of less than 30 mN / m.

Paste compositions with a water content of no more than 2% by weight, containing and / or consisting of (a) at least one colour pigment and / or one filler, (b) at least one poloxamer and, if appropriate, (c) at least one dispersant.

The present invention discloses a non-toxic and harmless colored pencil lead and a preparation method thereof. The colored pencil lead is made of the following components: fruit and vegetable powder, food-grade titanium dioxide, polylactic acid, adipic acid butanediol ester and terephthalic acid butanediol ester copolymer, and food-grade talcum powder. In the present invention, polylactic acid and fruit and vegetable powder are mutually fused and stirred at high temperature, so that the polylactic acid wraps the fruit and vegetable powder to form a color paste film. The addition of adipic acid butanediol ester and terephthalic acid butanediol ester copolymer increases the strength of the pencil lead and is more conducive to the formation of the color paste film. It can not only make the fruit and vegetable powder show color, but also be more heat-resistant, biodegradable, with various colors, and is more suitable for the children's market. When preparing the color paste film, the mixed powder is dispersed by a high-speed disperser to break the intermolecular force, so that the material is more evenly dispersed, the dispersion effect is better, it is not easy to agglomerate and cake, and the use feel is delicate and smooth. The present invention uses a twin-screw extruder to extrude and granulate instead of the traditional core pressing process, with higher efficiency and better stability.

A non-baked pencil lead (10) including a wax that is solid at normal temperature, a colorant, a filler, a water-soluble resin, and a cellulose fiber, wherein a ratio of a flaky substance in the filler is 20 mass% or less, and the ratio of an aggregate particle in the filler is 80 mass% or more.

The invention belongs to the technical field of stationery, and provides parallel rainbow dust-free chalk and a processing method thereof. The chalk is formed by fixedly connecting at least two dust-free chalk units with different colors in parallel along the axial direction, and the cross section of a finished product is fan-shaped or distributed in parallel in a layered manner; each unit comprises 9-15 parts of a binder, 43-57 parts of a filler, 0.5-1.5 parts of a coloring agent, 4-6 parts of a moisture-proof lubricant and 25-35 parts of an emulsification dispersion medium. The processing method comprises the following steps: metering raw materials, preparing powder and a mixture in a color separation manner, pressing color strips in a color separation manner, combining the color strips in parallel, filling the color strips into a die, carrying out collaborative extrusion molding at 30-40 DEG C and 0.5-1.0 MPa, and carrying out post-treatment, wherein the mixture is rolled for not less than 2 times. Single-support multi-color writing is achieved, the color bar area is large if the color is small, use is convenient, multi-color lines with natural transition can be drawn at the same time if the color is large, and the drawing interest is improved; through the process of color separation pressing, combined die filling and collaborative extrusion, color unit interfaces are tightly attached, the structure is stable, the process is compatible with existing equipment, and industrial popularization is facilitated.

To provide fired pencil lead that can maintain writing line density while improving bending strength, and offers a smooth writing feel, and a method for producing the same.SOLUTION: Fired pencil lead is prepared by sintering a mixture containing a body material, an organic binder, organic modified silicone, and silica oxide nanoparticles.SELECTED DRAWING: None

The invention discloses a marking material for a fabric and a preparation method thereof, and relates to the technical field of marking materials, the marking material for the fabric comprises the following components by mass percentage: 62%-65% of grease, 8%-10% of sodium hydroxide, 19%-20% of water and 5%-10% of talcum powder. According to the marking material for the fabric, the marking position is clear, lasting and easy to clear, the identification definition and the clearability of the marking material are both considered, the processing precision and the production efficiency of products can be improved, and therefore the defective rate caused by unclear marking or residual marking of the products is reduced.

The present invention relates to a body for a writing, tracing, drawing or coloring pencil, the composition of which comprises, by weight, with respect to the total weight of the body: - a) between 50% and 95% of a mixture of polylactic acid and of polybutylene succinate in a polylactic acid / polybutylene succinate ratio by weight of between 90 / 10 and 60 / 40 and - b) between 5% and 50% of filler, wherein said filler comprises an organic filler, such as wood fibers. In addition, it relates to a writing, tracing, drawing or coloring pencil comprising this body.

A non-baked pencil lead including a wax that is solid at normal temperature, a colorant, a filler, a water-soluble resin, and a cellulose fiber, wherein a ratio of a flaky substance in the filler is 20 mass % or less, and the ratio of an aggregate particle in the filler is 80 mass % or more.

Provided are a pencil lead which has sufficient strength at the time of writing even when a tip is pointed, less deterioration due to moisture absorption, and erasability, and can be manufactured without applying a temperature exceeding 500°C, and a method for manufacturing the pencil lead. The pencil lead of the present disclosure contains at least a clay in which the peak of 2θ appears at 12.4 ± 0.5 and / or 24.5 ± 1.0 as measured by XRD, a coloring material, and an alkali metal element. The method for manufacturing the pencil lead includes drying a clay at 50°C to 500°C such that a peak of 2θ appears at 12.4 ± 0.5 and / or 24.5 ± 1.0 as measured by XRD, mixing the dried clay, a coloring material, and an alkali metal hydroxide aqueous solution, molding the mixture, and then performing firing at 50°C to 500°C.

The present invention provides a pencil lead capable of achieving both bending strength and writing density even when graphite is used as the filler material, a method for manufacturing the same, and a pencil equipped with the pencil lead. [Solution] The pencil lead of the present invention has an apparent density (g / cm³). 3 The value obtained by dividing ) by the volume-average particle size (μm) is 0.040 (g / cm³). 3 It contains graphite particles that are spheroidal graphite or scaly graphite and are larger than or equal to ( / μm).

The purpose of the present invention is to provide a coloring composition that: makes it possible to obtain a glossy drawing or a beautiful drawing having little mottling; is excellent in drawing feel and long-term stability; and can contribute toward environmental conservation. This coloring composition contains a carbon-based powder as a pigment component, and is such that 70 mass% or more of the carbon-based powder is constituted by particles having a particle diameter in the range of 50-600 nm, e.g., 100-400 nm, according to a dynamic light scattering method. Preferably, 5 mass% or more of the carbon-based powder is constituted by particles having a particle diameter in the range of 400-600 nm. The carbon-based powder also preferably has a fixed carbon content of 40-98 mass%. Preferably, 70 mass% or more of the carbon-based powder is constituted by biomass carbon.

A system, composition, and method are disclosed for producing superhydrophobic and antifouling polymer materials. The invention incorporates antifouling agents such as capsaicin, medetomidine, tralopyril, or zinc pyrithione together with hydrophobic additives such as polydimethylsiloxane, polytetrafluoroethylene, fluoropolymers, or surface-modified nanoparticles into natural or synthetic rubber and thermoplastic matrices. In one approach, pre-formulated antifouling compositions are added as solid components during compounding, and in another, the polymer itself serves as a carrier medium for direct incorporation of the active ingredients. The compounded materials exhibit controlled release of antifouling agents, low surface energy, and superhydrophobic behavior that reduces drag and resists attachment of marine and freshwater organisms. A manufacturing system may include compounding, monitoring, and forming units, with optional plasma or laser treatment to enhance nanoscale roughness. The invention enables durable, environmentally responsible materials for marine, industrial, and consumer applications requiring long-term fouling resistance.

The invention relates to an erasable, unburnt colored lead for writing, drawing and painting devices or erasable, unburnt colored chalk containing at least one filler material, graphite, at least one colorant, at least one binding agent and at least one wax, wherein boron nitride is present as a filler material and at least on pigment is present as colorant. The invention further relates to a writing, painting or drawing device comprising an erasable, unburnt colored lead and a method for manufacturing such a colored lead or colored chalk.

This non-baked pencil lead comprises a carboxymethyl cellulose salt, a polymeric organic acid, and a powder.