C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 11/18 (2006.01) B43K 7/00 (2006.01)
Patent
CA 2376123
An oil-based ballpoint pen ink composition comprising a) a colorant, b) a solvent containing one or more solvents having the following chemical structural formula (1) Image where R1, R2 and R3 are each independently H or CH31 as the main solvent, and c) a resin which is soluble in the solvent, wherein the ink viscosity is 700-8000 mPa.cndot.s and preferably at least 800 mPa.cndot.s and less than 6000 mPa.cndot.s at 25°C. According to one mode, the main solvent is a mixed solvent comprising this solvent with -propyleneglycol monomethyl ether.
L'invention concerne une composition d'encre de stylo bille à base d'huile qui comprend a) un colorant, b) un solvant dont l'élément principal est au moins un solvant de formule chimique (1)(dans ladite formule, R<1>, R<2>, R<3> sont chacun indépendamment hydrogène ou CH3), et c) une résine soluble dans le solvant à viscosité comprise entre 700 et 8 000 mPa.s à 25 DEG C, et de préférence entre 800 et 6 000 mPa•s, sans atteindre la limite de 6 000 mPa•s. Selon une variante, l'élément solvant principal est un mélange d'au moins un solvant et d'éther de monométhyle de polyéthylèneglycol.
Gowling Lafleur Henderson Llp
Mitsubishi Pencil Co. Ltd.
LandOfFree
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