INK COMPOSITION FOR WRITING BOARD

PURPOSE:To obtain the titled composition having excellent erasability and long-term stability, by dissolving a mixture of a specified colored polymer with a hydrophobic nonionic surface active agent, a hydrophilic nonionic surface active agent, an ampholytic surface active agent, a silicone oil, etc...

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Bibliographic Details
Main Authors KANESHIGE YOSUKE, OKUZONO SHUICHI, SHINTANI KOJI
Format Patent
LanguageEnglish
Published 01.09.1987
Subjects
ADHESIVES
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
CORRECTING FLUIDS
DYES
FILLING PASTES
INKS
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
PASTES OR SOLIDS FOR COLOURING OR PRINTING
POLISHES
USE OF MATERIALS THEREFOR
WOODSTAINS
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Summary:PURPOSE:To obtain the titled composition having excellent erasability and long-term stability, by dissolving a mixture of a specified colored polymer with a hydrophobic nonionic surface active agent, a hydrophilic nonionic surface active agent, an ampholytic surface active agent, a silicone oil, etc. in a volatile organic solvent. CONSTITUTION:A colored polymer (A) is obtained by dyeing with a basic dye a copolymer resin which is prepared by copolymerizing an ethylenically unsaturated sulfonic acid (salt) with another copolymerizable monomer, contains 0.1-60wt% sulfo groups or salt thereof, has a glass transition temperature of -20-150 deg.C, and is soluble in an organic solvent. 100pts.wt. component A is mixed with additives (B) comprising 5-100pts.wt. hydrophobic nonionic surface active agent (a), 5-100pts.wt. hydrophilic nonionic surface active agent (b) with a + b being 10-150pts.wt., 5-100pts.wt. ampholytic surface active agent (c), 0-20pts.wt. silicone oil (d), 0-50pts.wt. hardly volatile alcoholic solvent (e), and 10-150pts.wt. hardly volatile or non-volatile organic compound (f). This mixture is dissolved in a volatile organic solvent in an amount sufficient to provide a concentration of 4-50wt%.
Bibliography:Application Number: JP19860038278