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1. WO2000039227 - BAKED COLORED PENCIL LEAD AND PROCESS FOR PRODUCING THE SAME

Publication Number WO/2000/039227
Publication Date 06.07.2000
International Application No. PCT/JP1999/007272
International Filing Date 24.12.1999
Chapter 2 Demand Filed 28.04.2000
IPC
C09D 13/00 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
DCOATING 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
13Pencil-leads; Crayon compositions; Chalk compositions
CPC
C09D 13/00
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
DCOATING 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
13Pencil-leads; Crayon compositions; Chalk compositions
Applicants
  • MITSUBISHI PENCIL KABUSHIKI KAISHA [JP/JP]; 23-37, Higashi Ohi 5-chome Shinagawa-ku Tokyo 140-8537, JP (AllExceptUS)
  • KITAZAWA, Katsunori [JP/JP]; JP (UsOnly)
  • HOSHIBA, Masaaki [JP/JP]; JP (UsOnly)
  • KANBA, Noboru [JP/JP]; JP (UsOnly)
Inventors
  • KITAZAWA, Katsunori; JP
  • HOSHIBA, Masaaki; JP
  • KANBA, Noboru; JP
Agents
  • FUJIMOTO, Eisuke ; Fujimoto Patent & Law Office Room 317 Sanno Grand Building 3F 14-2, Nagata-cho 2-chome, Chiyoda-ku Tokyo 100-0014, JP
Priority Data
10/37007125.12.1998JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) BAKED COLORED PENCIL LEAD AND PROCESS FOR PRODUCING THE SAME
(FR) MINE CUITE DE CRAYON COULEUR
Abstract
(EN)
A process for producing a baked colored pencil lead, which comprises immersing in a dye ink a white or light-colored, porous baked lead having a median pore diameter of 0.27 $g(m)m or smaller on a volume basis and then pressurizing the dye ink to 1.5 MPa or higher to infiltrate the dye ink into pores of the baked lead. In particular, the process is one in which a dye ink solution containing at least one of nonvolatile solvents represented by the following general formulae (I) to (III) in an amount of 35 to 90 wt. % based on the ink solution and further containing a low-boiling organic solvent is infiltrated into the pores under pressure and the lead is then dried to remove the low-boiling organic solvent. A colored pencil lead obtained by the process is also provided. CH3(CH2)7CH=CH(CH2)7CH2OH (I); R1O(CH2CH2O)nH (II). [In the formula (II), R1 is decanoyl, undecanoyl, lauroyl, tridecanoyl, or oleoyl and n is 4.5 to 15.] R2-O-(CH2CH2O)mH (III). [In the formula (III), R2 is decyl, undecyl, lauryl, tridecyl, or oleyl and m is 1 to 14.]
(FR)
L'invention concerne un procédé permettant de fabriquer une mine cuite de crayon couleur. Ce procédé consiste à immerger dans une encre de teinture une mine cuite poreuse blanche ou de couleur claire ayant un diamètre poreux moyen de 0,27 $g(m)m ou moins en volume, puis à pressuriser l'encre de teinture à 1,5 Mpa ou plus, de sorte que l'encre de teinture s'infiltre dans les pores de la mine cuite. D'une manière spécifique, dans ce procédé, une solution d'encre de teinture contient au moins un des solvants non volatils représentés par les formules générales (I) à (III), en quantité de 35 à 90 % en poids en fonction de la solution d'encre et contient également un solvant organique à point d'ébullition peu élevé. On introduit sous pression cette solution dans les pores de la mine, puis on sèche la mine afin d'en éliminer le solvant organique à point d'ébullition peu élevé. L'invention concerne également une mine de crayon couleur obtenue au moyen de ce procédé. CH3(CH2)7CH=CH(CH2)7CH2OH (I); R1O(CH2CH2O)nH(II). [Dans la formule (II), R1 représente décanoyle, undécanoyle, lauroyle, tridécanoyle ou oléoyle et n vaut de 4,5 à 15.] R2-O-(CH2CH2O)mH- (III). [Dans la formule (III), R2 représente décyle, undécyle, lauryle, tridécyle ou oléyle et m vaut de 1 à 14.]
Also published as
DE19983886
GBGB0115085.3
Latest bibliographic data on file with the International Bureau