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| Number | Title | Issue Date |
| 7943684 | Process for production of black crayon The invention provides a process for producing a crayon without poor gelation using a benzylidene sorbitol gelling agent together with the use of carbon black as a black pigment. The process comprises dissolving and dispersing carbon black and a resin component in a... | 05/17/2011 |
| 7291210 | Solid drawing material and method for producing the same Disclosed herein is a first solid drawing material comprising water, a coloring agent, a solidifying agent that is a fatty acid alkali metal salt, and an O/W type emulsion of a separating agent that is an oily material which hardly volatilizes at room temperature. T... | 11/06/2007 |
| 7217378 | Simple and efficient process for the preparation of pencil lead from spent pot-liners The present invention relates to a simple and efficient process for the preparation of pencil lead from the spent or waste pot liners of aluminum industries, said process comprising steps of crushing the liners into small sizes, adding chromic acid to the crushed li... | 05/15/2007 |
| 7148285 | Coated carbon black pellets and methods of making same A method of producing coated carbon black pellets is disclosed and includes contacting carbon black pellets with a coating agent to at least partially coat the individual carbon black pellets with the coating agent. The amount of coating agent applied to the carbon ... | 12/12/2006 |
| 7148284 | Hot melt adhesive Hot melt adhesives that contain an N-alpha olefin wax have substantially improved open times. ... | 12/12/2006 |
| 7119127 | Golf balls containing cis-to-trans converted polybutadiene and methods for making same A golf ball having at least a core and a cover, wherein at least a portion of the ball is formed from a material resulting from the isomerization of an amount of polybutadiene in solution to create a resulting polybutadiene having an increased content of trans-polyb... | 10/10/2006 |
| 7112624 | Ethylene alkyl acrylate copolymers with improved heat resistance The invention provides a copolymer of ethylene and at least 5 mol % of comonomer units derived from an alkyl acrylate or alkyl methacrylate, wherein the copolymer has a melt index of from 1 to 10,000 g/10 min, and a maximum peak melting temperature of at least 100°... | 09/26/2006 |
| 6964999 | Polymer and curable composition A vinyl polymer having at least one terminal group of the general formula (1) per molecule; —OC(O)C(R)═CH2 (1) wherein R represents hydrogen or an organic group containing 1 to 20 carbon atoms; | 11/15/2005 |
| 6946528 | Hot melt adhesives The invention provides a hot melt adhesive composition including a tubular reactor copolymer of ethylene and 5 to 20 mol % of comonomer units derived from an alkyl acrylate or alkyl methacrylate, wherein the copolymer has a melt index of at least 300 g/10 min. The a... | 09/20/2005 |
| 6930135 | Non-pigmented ink jet inks A non-pigmented ink composition suitable for use in ink jet printing is provided made up of a blend of two or more hollow micro-spheres comprising a small particle size hollow micro-sphere and a larger particle size hollow micro-sphere. The remainder of the ink comp... | 08/16/2005 |
| 6815471 | Erasable colored pencil lead Disclosed is an erasable colored pencil lead composition comprising, in an embodiment, a colorant, one or more binder resins, an antioxidant, a fibrillatable or fibrillated material, and a filler. Also disclosed is a colored pencil lead composition which produces ma... | 11/09/2004 |
| 6623197 | Water-based solid marking composition, method for producing the same, and water-based marking instrument containing the same A water-based solid marking composition comprises water, a humectant and a solidifying agent present in the weight ratio of 2~3:1~2:1. A water-based marking instrument comprising the water-based solid marking composition includes a body surrounding the wa... | 09/23/2003 |
| 6316526 | Method for making leads for color pencils, cosmetic pencils and colored chalk A simplified method for producing a lead for color pencils, cosmetic pencils and colored chalk with good down stroke behavior involves mixing powdered or granular base materials containing a thermolabile, polymeric binding agent, inorganic filler material... | 11/13/2001 |
| 6271286 | Erasable colored pencil lead The present invention provides an erasable colored pencil lead composition comprising a colorant, one or more binder resins, a fibrillatable or fibrillated material, and a filler. The colored pencil lead of the present invention produces marks on paper, w... | 08/07/2001 |
| 6262143 | Erasable colored pencil lead The present invention provides an erasable colored pencil lead composition comprising a colorant, one or more binder resins, a fibrillatable or fibrillated material, and a filler. The colored pencil lead of the present invention produces marks on paper wh... | 07/17/2001 |
| 6174938 | Water-based coloring compositions containing submicron polymeric particles A water-based coloring composition suitable for use in children's markers comprising a carrier, submicron polymeric particles, and a neutral buoyancy additive. The coloring compositions produce unique opaque images on a wide variety of writing surfaces. A... | 01/16/2001 |
| 6043298 | Solid fritted bonding material A solid fritted bonding material consisting essentially of a blended wax composition and a powder is provided. The solid fritted bonding material is used to secure at least two articles together by applying the solid fritted bonding material to mating sur... | 03/28/2000 |
| 6011084 | Erasable colored pencil lead The present invention provides a colored pencil lead composition comprising a colorant, one or more binder resins, a fibrillatable or fibrillated material, a non-fibrillatable particulate lubricant, and a filler. An example of a suitable binder resin is h... | 01/04/2000 |
| 5965657 | Air stable adhesive stick A solid, air stable adhesive composition containing wax and a polyolefin having a viscosity no greater than 2,000 centipoise and a needle penetration hardness of at least 50 dmm is disclosed. It is further disclosed that propylene-ethylene copolymer is th... | 10/12/1999 |
| 5919858 | Erasable inks An aqueous-based erasable ink composition suitable for use in highlighters and other writing instruments includes a styrene-butadiene copolymer and a water-insoluble pigment. It preferably also includes a release agent and an anti-oxidant, and has a visco... | 07/06/1999 |
| 5801215 | Baked pencil lead and method for manufacturing the same Baked pencil leads are disclosed herein which are prepared by kneading, extruding and baking a composition containing a graphite as a filler and a binder, wherein a degree of orientation π of the graphite in the direction of an extrusion axis measured by... | 09/01/1998 |
| 5733482 | Baked color pencil lead manufactured by impregnation with perhydropolysilazane and heat treatment By kneading a composition containing a filler and an organic forming binder, extruding the composition, baking the composition in a non-oxidizing atmosphere, there is obtained a first baked lead containing, as a binder, a carbon obtained by the carbonizat... | 03/31/1998 |
| 5604268 | Glue crayons The glue crayons comprising acrylate polymers, tackified acrylate polymers, acrylate polymers containing specific, pendent, macromeric units, acrylate polymers containing high chain length alkyl (meth)acrylate monomers, acrylate polymers containing both m... | 02/18/1997 |
| 5599853 | Erasable inks An aqueous-based erasable ink composition suitable for use in highlighters and other writing instruments includes a styrene-butadiene copolymer and a water-insoluble pigment. It preferably also includes a release agent and an anti-oxidant, and has a visco... | 02/04/1997 |
| 5595700 | Non-baked color pencil leads and method for preparing same Non-baked color pencil leads are obtained by forming a blend composition from a filler, a coloring agent, a binder without any wax, and a water/oil repellant substance, kneading the mixture with a solvent and/or plasticizer, extruding the kneaded material... | 01/21/1997 |
| 5591787 | Hard lead for a pencil A fluorescent color hard lead for color pencils and marking crayons includes a matrix comprised of at least one material selected from the group consisting of a fatty acid metal salt, a fatty acid ester, and a wax; a binder; and a filler which is aluminum... | 01/07/1997 |
| 5591796 | Pumpable anti-abrasion ink additives and printing inks containing such additives An improved pumpable anti-abrasion/slip ink additive is disclosed comprising a mixture of polytetrafluoroethylene and polyalphaolefin. As an alternative, additional material, such as phenolic resins and oils can be added to the mixture. The additives perm... | 01/07/1997 |
| 5529615 | Marking material and method for suspending pigment particles A composition of a wax-based vehicle, suspension medium, and pigment particles to provide a marking material having a substantially uniform suspension of pigment particles and a method for its manufacture. The marking material includes a wax-based vehicle... | 06/25/1996 |
| 5449399 | Blendable writing instrument Writing instruments are provided comprising a) a friction transferable binder comprising a colorant, and b) frangible microcapsules containing a liquid solvent. The writing instrument contains sufficient microcapsules to provide a Coloration Uniformity Pe... | 09/12/1995 |
| 5430075 | Baked pencil leads and method for preparing same Baked pencil leads in which a filler such as flaky graphite is oriented in a concentric tubular form in an outer peripheral portion of each lead and which has one or more layers spaced in a radial direction from the outer peripheral portion and comprising... | 07/04/1995 |
| 5389717 | Erasable marking composition An erasable marking composition comprising a noncarboxylated styrene-butadiene copolymer resin, a colorant, and a solvent. The composition can be applied to substrates by a variety of delivery means, such as porous-tipped and brush-tipped writing instrume... | 02/14/1995 |
| 5346930 | Rigid fiberboard A rigid fiberboard suitable as a replacement for the natural woods presently used for the manufacture of pencils is provided. The fiberboard essentially comprises a fiber network, together with a filler and binder. A lubricant is added to improve the shar... | 09/13/1994 |
| 5336306 | Water soluble coloring compositions containing sparkle components Water soluble coloring compositions are provided that contain a stable and uniform suspension of color and sparkle or glitter components. The process for producing the coloring compositions employs a lower temperature range than the prior art; this reduce... | 08/09/1994 |
| 5331023 | Pressure-sensitive crayon adhesive This invention relates to thermoplastic, pressure-sensitive solid adhesives capable of transferring an adhesive film to a substrate by friction rubbing of the adhesive on the substrate. The adhesives of this invention consist essentially of polyisobutylen... | 07/19/1994 |
| 5300538 | Solid marking compositions An erasable highlighting composition is provided including a block copolymer, a wax, and a fluorescent pigment. The composition is in solid form, and, when applied to an underlying marking on a substrate, is capable of forming a highlighting marking which... | 04/05/1994 |
| 5261952 | Solid marking composition containing glitter A solid marking composition comprising a waxy material, particularly a plasticizer and a fatty acid, an emollient, a pigment, and glitter, which is suitable for use in writing instruments, such as crayons, and may be applied to porous and non-porous subst... | 11/16/1993 |
| 5147457 | Correction stick Correction stick comprising a gelatinizer, white pigments, dispersant, water-soluble or dispersible film-forming resin and a gelation modifier, said gelatinizer being alkali metal salts or ammonium salts of aliphatic carboxylic acids having carbon atoms o... | 09/15/1992 |
| 5084493 | Water soluble crayon compositions This invention relates to water soluble crayon compositions which are comprised of (i) one or more water soluble block polymers characterized by an ABCBA structure and (ii) a coloring agent, and to crayons produced therefrom. This invention also relates t... | 01/28/1992 |
| 5055498 | Plastic crayon The solid marking composition of the invention includes from about 15% up to about 50% by weight of a polyethylene resin component having a specific gravity in the range of from about 0.95 up to about 0.96. In addition, the composition of the invention in... | 10/08/1991 |
| 4990013 | Glitter crayon An improved crayon composition is disclosed, comprising a base wax binder component having a melting point in excess of about 100 degrees Fahrenheit, from about 5.0 to about 50.0 weight percent of an emulsifying agent, and from about 0.01 to about 5.0 wei... | 02/05/1991 |
