EP0523177A1 - Materiau de marquage phosphorescent - Google Patents

Materiau de marquage phosphorescent

Info

Publication number
EP0523177A1
EP0523177A1 EP19910908128 EP91908128A EP0523177A1 EP 0523177 A1 EP0523177 A1 EP 0523177A1 EP 19910908128 EP19910908128 EP 19910908128 EP 91908128 A EP91908128 A EP 91908128A EP 0523177 A1 EP0523177 A1 EP 0523177A1
Authority
EP
European Patent Office
Prior art keywords
phosphorescent
particles
filler
wax
mixture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19910908128
Other languages
German (de)
English (en)
Other versions
EP0523177A4 (en
Inventor
William Grandmont
Paula Rendino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Playstation Inc
Original Assignee
Playstation Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Playstation Inc filed Critical Playstation Inc
Publication of EP0523177A1 publication Critical patent/EP0523177A1/fr
Publication of EP0523177A4 publication Critical patent/EP0523177A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/50—Sympathetic, colour changing or similar inks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K19/00—Non-propelling pencils; Styles; Crayons; Chalks
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials

Definitions

  • the present invention relates to phosphorescent or photoluminescent materials and, more particularly, is directed to a non-toxic phosphorescent marking material and a method of marking same.
  • phosphorescent pigments can be mixed in paint.
  • U.S. Patent No. 2,396,219 discloses a phosphorescent chalk writing material which is toxic and unsafe for use by children.
  • chalk makes dust which is not optimal for a permanent clean marking material.
  • the use of a phosphorescent material such as calcium sulphide phosphor in a crayon is not acceptable because calcium sulphide phosphor is toxic and it will settle out.
  • the use of non-toxic phosphorescent pigments in a wax base marking material has been met with limited success because of the lack of a suitable suspension formula and an acceptable suspension process.
  • Autoradiogram marking pens such as the phosphorescent ink marking pen disclosed in U.S. Patent No. 4,510,392, are sufficient for exposing film, but they have very low luminous properties for visual effects.
  • Another object of the present invention is to provide an effective phosphorescent wax base marking material which can be utilized for a variety of applications including use as glow in the dark crayons for children.
  • a further object of the present invention is to provide a non-toxic phosphorescent pigment marker which is composed of a wax base and inert filler mixture, the filler being at least partially transparent to actinic radiation.
  • Phosphorescent pigment particles are suspended in the wax base and filler mixture.
  • the weight of phosphorescent particles is in the range of 10% to 50% of the total weight of the marking material.
  • the composition of the marking material is such that a strip of the marking material is rubbed off or deposited on a surface when the marker is rubbed against the surface.
  • the deposited material contains the suspended phosphorescent particles which luminesce when excited by light.
  • Yet another object of the present invention is to provide a method for making a non-toxic wax base phosphorescent marker.
  • the process comprises the steps of mixing a plurality of phosphorescent particles with a wax base having an inert filler mixed therewith.
  • the wax base and filler mixture are at least partially transparent to actinic radiation.
  • the wax base and filler mixture is such that it is capable of keeping phosphorescent particles suspended therein, the particle sizes being in the range of 5 to 20 microns.
  • the invention accordingly comprises the method and apparatus, and together with their steps, parts, elements and interrelationships that are exemplified in the following disclosure, the scope of which will be indicated in the appended claims.
  • Crayon 10 is composed of a carrier 12, which includes a base 14 and filler particles 16, and a plurality of phosphorescent pigment particles 18 are suspended in the carrier.
  • Base 14 is composed of a material which is suitable for molding or extrusion.
  • base 14 is a wax base vehicle, for example micro-crystalline wax or bees wax, or a soap base or a blend thereof.
  • base 14 is composed of a plastic that is compatible with the other components, for example, a plastic such as a low density plastic.
  • Non-toxic petrolatum such as petroleum jelly or mineral oil, is added to base 14 to form a base mixture that has a somewhat greasy configuration.
  • Stearic acid or cetyl alcohol or stearyl alcohol or hydrogenated castor bean oil is added to the base mixture to impart a crumbly effect.
  • a wax for example, Fischer Traupe wax or paraflint or carnauba wax, is added to the base mixture for the purpose of imparting hardness to the base mixture.
  • a low density plastic for example a polythylene such as that sold under the trade name AC6, is added to the base mixture to impart hardness and strength.
  • a vinyl resin such as that sold under the trade name ELVAX, imparts hardness and strength to the base mixture.
  • the base wax mixture is then heated and melted to form a final base mixture or base 14, the mixture being heated to a temperature in the range of 160°F to 250°F, preferably 175°F to 200° F. It is preferred that the mixture is remained at a temperature in the range of 170°F to 200°F during processing.
  • Filler particles 16 are added to the melted base mixture 14.
  • the filler particles 16 which are composed of an inert filler material such as magnesium silicate or powdered talc, having particle sizes in the range of 8-10 microns, are transparent or partially transparent to actinic radiation.
  • filler particles 16 have a low density so that they remain suspended in the base mixture 14.
  • the quantity of filler particles 16 by percent of total weight is in the range of 10% to 30% and preferably, 13% to 20%.
  • the filler particles 16 are dispersed uniformly in the base material by mixing or milling or whipping.
  • the base/filler mixture is milled using, for example, a Tri-Homo colloid mill which is operating at 3700 rp .
  • the base/filler mixture exhibits anti-settling properties for the phosphorescent pigment particles 18 so that the phosphorescent particles remain suspended in the base/filler mixture and do not settle to the bottom of the base/filler mixture.
  • phosphorescent pigment particles for example, a non-toxic pigment having particle sizes in the range of 5-20 microns
  • the base/filler/pigment particle mixture was whipped at approximately 1000 rpm for 2-3 minutes using a standard Lightning mixer that was equipped with a shear blade.
  • the quantity of phosphorescent pigment particles by percent of total weight is in the range of 20% to 50% and, preferably, in the range of 25% to 35%.
  • the resulting mixture is suited to be molded or extruded without settling over a temperature range of 170°to 275° F.
  • approximately twelve phosphorescent crayons were made by first combining or mixing 20 grams of paraffin wax, 15 grams of Mobil 2305 micro wax, 7.5 grams of petroleum jelly, 5 grams of stearic acid and 2.5 grams of Fisher Traupe wax. Then, the mixture is heated to a temperature in the range of 195°F to 200°F to form a melted base mixture. Once heated, the mixture is maintained at a temperature in the approximate range of 170°F to 200°F until it is finally cooled. Next, 15 grams of No. 1250 micro talc is added to the base mixture and milled using a colloid mill to form a base/filler mixture.
  • phosphorous pigment such as Hanovia Brand P1000
  • the final marking mixture is poured into a mold and cooled. It is preferred that the poured mixture and/or mold is actively cooled. After cooling, the crayon is removed from the mold.
  • the crayon marked well on a variety of surfaces.
  • the phosphorescent pigment particles impart luminescent properties to the crayon and luminesce when excited by light. In one test, the marking material was rubbed onto a surface. The strip left on the surface luminesced brightly for four to ten seconds and continued to luminesce for approximately six hours. It is to be understood that, in another embodiment, the crayons are extruded rather than molded.
  • a base mixture composed of a mixture of 20 grams of paraffin wax, 15 grams of Mobil 2305 micro wax, 9.5 grams of petroleum jelly, 5 grams of stearic acid and 2.5 grams of Fisher Traupe wax is heated to a temperature in the range of 195° F to 200° F until the mixture is melted. Once heated, the mixture is maintained at a temperature in the approximate range of 170°F to 200°F until final cooling. Next, 15 grams of No. 1250 micro talc is added to the melted mixture and milled using a colloid mill to form a base/filler mixture.
  • phosphorescent pigment particles P1000
  • the base/filler mixture 35 grams of phosphorescent pigment particles (P1000) is added to the base/filler mixture and the resulting mixture is whipped at at approximately 1000 rpm for 2-3 minutes to form a final marking mixture.
  • the final marking mixture is poured into a mold having a desired shape, for example the shape of a crayon.
  • the poured mixture and/or mold is passively or actively cooled.
  • the finished crayon 10 is removed from the mold.
  • the resulting whipped mixture is fed to an extruder and extruded into a desired shape.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Luminescent Compositions (AREA)
  • Materials For Medical Uses (AREA)

Abstract

Marqueur phosphorescent déformable atoxique (10) ayant des particules phosphorescentes de pigments (18) en suspension dans un mélange moulu (12) d'une matière de remplissage inerte (16) et d'une base formée par un mélange de cires (14). Les particules de pigments phosphorescentes, qui transmettent des propriétés luminescentes au marqueur, sont excitées par la lumière. La composition du marqueur a pour particularité qu'elle laisse une bande de matière marquante phosphorescente sur la surface contre laquelle le marqueur est appliqué par frottement. La matière déposée contient les particules phosphorescentes en suspension, qui deviennent luminescentes quand elles sont excitées par la lumière.
EP19910908128 1990-04-05 1991-03-29 Phosphorescent marking material Withdrawn EP0523177A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50488490A 1990-04-05 1990-04-05
US504884 1990-04-05

Publications (2)

Publication Number Publication Date
EP0523177A1 true EP0523177A1 (fr) 1993-01-20
EP0523177A4 EP0523177A4 (en) 1993-08-11

Family

ID=24008123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910908128 Withdrawn EP0523177A4 (en) 1990-04-05 1991-03-29 Phosphorescent marking material

Country Status (5)

Country Link
EP (1) EP0523177A4 (fr)
JP (1) JPH06500131A (fr)
AU (1) AU642837B2 (fr)
CA (1) CA2079591A1 (fr)
WO (1) WO1991015553A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5529615A (en) * 1994-06-15 1996-06-25 Playstation Inc. Marking material and method for suspending pigment particles
CA2445544A1 (fr) * 2000-04-26 2001-11-01 Dennis James O'connell Dispositif auxiliaire pour le decoupage ou le soudage
RU2493192C1 (ru) * 2012-09-07 2013-09-20 Федеральное Государственное Унитарное Предприятие "Гознак" (Фгуп "Гознак") Маркирующая композиция на основе неорганических люминофоров, способ маркировки изделий из металла и изделие из металла

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR411058A (fr) * 1909-12-29 1910-06-07 Frank Cook Simson Composition lumineuse dans l'obscurité
DE7830645U1 (de) * 1979-12-20 Schwan-Stabilo Schwanhaeusser Gmbh & Co, 8500 Nuernberg Stift mit einer Mine auf Wachsbasis
DE3050023A1 (de) * 1980-05-20 1982-07-15 Peter 7630 Lahr Kollmer Verwendung von nachleuchtendem zinksulfid und verfahren zum markieren von gummi, kunststoffen und dgl.
DE3421408A1 (de) * 1984-06-08 1986-01-02 Johann Froescheis LYRA-Bleistift-Fabrik GmbH & Co, 8500 Nürnberg Mine fuer schreib-, markier- oder zeichenzwecke in form einer feststoffmine
EP0314350A1 (fr) * 1987-10-20 1989-05-03 THOMAS DE LA RUE & COMPANY LIMITED Composés fluorescents et leur application

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US966251A (en) * 1909-09-04 1910-08-02 Francis Cook Simson Illuminating composition.
US2380126A (en) * 1941-09-11 1945-07-10 Fred A Sturm Marking crayon
USRE22530E (en) * 1941-10-08 1944-08-15 Pencil for laundry marking
US2317159A (en) * 1941-10-13 1943-04-20 Rhode Island Lab Inc Writing device
US3057806A (en) * 1959-07-23 1962-10-09 Switzer Brothers Inc Fluorescent crayons
US3392123A (en) * 1962-10-17 1968-07-09 Du Pont Chemiluminescent formulations
US3565815A (en) * 1967-12-28 1971-02-23 Ind Mfg Co Inc Phosphor containing plastic polystyrene
JPS5470132A (en) * 1977-11-16 1979-06-05 Osawa Kenji Method of making fluorescent color pencil lead capable of writing on paper* metal* glass* cellophane* vinyl* film* ceramic* etc*
JPS61123686A (ja) * 1984-11-19 1986-06-11 Sakura Color Prod Corp 固形マ−キング材の製造法
JPH0453979Y2 (fr) * 1986-06-30 1992-12-18

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7830645U1 (de) * 1979-12-20 Schwan-Stabilo Schwanhaeusser Gmbh & Co, 8500 Nuernberg Stift mit einer Mine auf Wachsbasis
FR411058A (fr) * 1909-12-29 1910-06-07 Frank Cook Simson Composition lumineuse dans l'obscurité
DE3050023A1 (de) * 1980-05-20 1982-07-15 Peter 7630 Lahr Kollmer Verwendung von nachleuchtendem zinksulfid und verfahren zum markieren von gummi, kunststoffen und dgl.
DE3421408A1 (de) * 1984-06-08 1986-01-02 Johann Froescheis LYRA-Bleistift-Fabrik GmbH & Co, 8500 Nürnberg Mine fuer schreib-, markier- oder zeichenzwecke in form einer feststoffmine
EP0314350A1 (fr) * 1987-10-20 1989-05-03 THOMAS DE LA RUE & COMPANY LIMITED Composés fluorescents et leur application

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9115553A1 *

Also Published As

Publication number Publication date
JPH06500131A (ja) 1994-01-06
EP0523177A4 (en) 1993-08-11
AU7674891A (en) 1991-10-30
CA2079591A1 (fr) 1991-10-06
WO1991015553A1 (fr) 1991-10-17
AU642837B2 (en) 1993-10-28

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