61results 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.

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.

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.

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.

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.

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.

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.

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

The invention provides a non-calcined pencil lead, which can achieve high visibility and line performance of easy writing even on a tablet, and pencil writability / line characteristics at the same time. The non-calcined pencil lead according to the present disclosure contains at least a body material, a pigment, and a water-soluble resin, and is characterized in that the range of the intensity ratio (G / D) of the G peak (near 1580 cm <-1 >) to the D peak (near 1350 cm <-1 >) in the Raman spectrum of a writing line is set to 5-20%, and the range of the intensity ratio (G / D) of the writing line is set to 20% or more, the range of the intensity ratio (G / D) of the writing line is set to 0.5-1.5.

The invention belongs to the field of stationery, and particularly relates to a mould-proof and dirt-proof pen refill and a pencil. According to the mould-proof and dirt-proof pen refill provided by the invention, the formula and the melt extrusion process of the pen refill are optimized, and an environment-friendly material, namely the bio-based resin polylactic acid, is adopted as a raw material, so that a continuous film can be formed when the pen refill is used for writing on paper, and the pen refill can be cleaned and dirt can be prevented while being finally easily erased by an eraser. The invention provides a pencil comprising the refill, and the pencil can prevent mildew and dirty hands.

To provide a fired pencil lead that suppresses the spreading of lead powder when rubbed, resulting in a writing style that is less likely to smudge the paper. [Solution] A fired pencil lead is made in which a liquid with a viscosity index of 350 or less is impregnated into the pores of the fired core.

The plastic rod three-in-one crayon comprises a hollow plastic penholder, a sealing cap and a three-in-one crayon core, the three-in-one crayon core is arranged in the plastic penholder and adheres to the inner wall of the plastic penholder through an adhesive, the bottom of the sealing cap is inserted from the top of the plastic penholder, and the sealing cap is arranged on the plastic penholder. The sealing cap is fixed to the top of the plastic penholder in a close fit mode through the protruding annular groove, the bottom of the three-in-one crayon core is flush with the bottom of the plastic penholder, and the top of the three-in-one crayon core abuts against the bottom of the sealing cap. According to the three-in-one colored crayon pencil, the easily-sharpened resin material is adopted as a wrapping material of the three-in-one colored crayon pencil, the crayon is subjected to a casting molding process, and the crayon is a round or polygonal special-shaped solid rod body, so that the three-in-one colored crayon pencil is low-carbon, environment-friendly, simple in process, high in production efficiency and low in cost.

To provide an extra lead product which suppresses adhesion of a colored pencil lead to a case.SOLUTION: A colored pencil lead includes a colored pencil lead, and an extra lead case containing the same. The colored pencil lead contains a porous lead body containing an extender, an inorganic binder, a coloring agent, and an organic solvent capable of dissolving the coloring agent, and a hardly volatile liquid that cannot dissolve the coloring agent. In an inner surface of the extra lead case, a resin material having a solubility parameter different from the hardly volatile liquid by 1.5 or more is arranged.SELECTED DRAWING: Figure 1

[Problem] To provide: a reversible thermochromic composition that has excellent contrast between a colored state and a colorless state and also has excellent lightfastness; and a reversible thermochromic microcapsule pigment that encapsulates the reversible thermochromic composition. [Solution] A reversible thermochromic composition that includes (a) an organic electron-donating coloring compound, (b) a combination of compounds that have a specific structure and serve as electron-accepting compounds, and (c) a reaction medium that reversibly allows an electron transfer reaction to occur between component (a) and component (b) in a specific temperature range; and a reversible thermochromic microcapsule pigment that encapsulates the reversible thermochromic composition.

The invention belongs to the technical field of color paste, and particularly discloses color paste for chalk and a preparation method thereof, the color paste comprises the following components by weight: 30-40% of pigment, 8-12% of a dispersant, 0.2-0.6% of a thickener, 4-8% of a humectant, 0.2-0.6% of an antifoaming agent, and the balance of water; the dispersing agent comprises organic silicon modified epoxy resin and a water-based hydroxyl functional polyacrylate dispersion in a mass ratio of 1: (0.5-2); the pigment is modified lemon yellow. According to the present invention, the modified lemon yellow is adopted as the main coloring component, and the organosilicon modified epoxy resin and the aqueous hydroxyl functional polyacrylate dispersion are adopted as the dispersant, such that the dispersibility of the lemon yellow is effectively improved, the storage stability is improved, the tinting strength is improved, and the lemon yellow does not easily fade after the long-term storage.

[Problem] To provide: a color pencil lead having exceptional color development and erasability of writing, a smooth feel, and exceptional storage stability; a method for manufacturing a color pencil lead; and a refill product comprising a color pencil lead and a refill case in which the same is accommodated. [Solution] The color pencil lead according to the present invention includes: a porous lead body that contains a body material, an inorganic binder, a coloring agent, and a high-boiling-point organic solvent having a boiling point of 250°C or higher; and a refractory liquid with which the pores of the porous lead body are filled. The color pencil lead includes bringing a coloring agent solution that contains a coloring agent and a high-boiling-point organic solvent into contact with a porous lead body obtained through firing, furthermore bringing the coloring agent into contact with an insoluble refractory liquid, and filling the voids in the porous lead body with the refractory liquid. The refill product according to the present invention comprises the color pencil lead and a case.

This invention discloses a four-phase synergistic creative medium composition, its preparation method, and its application. The preparation method includes the following steps: (1) treating pigments with an interface modifier to obtain modified pigments; (2) melting wax-based materials and lubricants in a main reactor to form a uniform oil-phase continuous matrix; (3) adding the modified pigments to the molten oil phase and stirring to disperse them evenly, then dripping the preheated aqueous phase component at a constant rate of 40~60 ml / min to cause interfacial reorganization within the system, transforming it from an oil-in-water type to a bicontinuous phase structure; (4) adding functional resins to the integrated system and stirring to dissolve them, then crystallizing and solidifying the system through gradient cooling, followed by molding or extrusion molding and aging to obtain the finished product. The composition provided by this invention is an "all-functional" medium—combining the smoothness of oil pastels, the durability of crayons, the detail of pencils, and the fluidity of watercolors.

The present invention concerns a polymer-based extrudable non-calcined pencil lead comprising a lamellar mineral filler having a lamellarity index greater than 2.8, advantageously greater than 3.5, in particular greater than 4. It also concerns a pencil comprising such a lead and the use of a lamellar mineral filler having a lamellarity index greater than 2.8 to improve the flexural resistance and / or the smoothness, and / or the vividness of a polymer-based extrudable non-calcined pencil lead.

Provided is an unfired pencil core that can highly achieve both drawing line performance that is high in visibility and easy to take in even with a tablet, and pencil writing property / drawing line characteristics. An unfired pencil core of the present disclosure is an unfired pencil core containing at least an extender, a pigment, and a water-soluble resin, and is characterized in that a region of an intensity ratio (G / D) of 2.0 or more of a D band (around 1350 cm-1) and a G band (around 1580 cm-1) in a Raman spectrum of a drawn line is 5 to 20%, and the region of the intensity ratio (G / D) of 0.5 to 1.5 of the drawn line is 20% or more.