CPC C09D 11/17 (2013.01) [C08K 3/08 (2013.01); C08K 3/22 (2013.01); C08L 25/14 (2013.01); C08L 29/04 (2013.01); C08K 2003/0812 (2013.01); C08K 2003/2237 (2013.01)] | 20 Claims |
1. A marking ink composition suitable for a writing board, the composition comprising:
a pigment;
a pigment dispersant resin;
a masking agent;
a modified polyvinylalcohol or a polyvinylalcohol having a degree of saponification in a range of from 40 to 84% by molar ratio; and
an erasing auxiliary,
wherein the erasing auxiliary is selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a reducing sugar, a non-reducing sugar, a sugar alcohol, a reduced starch, a betaine derivative, and a long-chain fatty acid ester.
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