Patent ID: 11920047
Assignee: SOCIÉTÉ BIC
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 18:
19. A thermochromic water-based gel ink composition as claimed in claim 9, wherein the monocarboxylic or polycarboxylic acid is chosen from the group consisting of gallic acid, succinic acid, itaconic acid, glutaric acid, oxalic acid, oxaloacetic acid, pyruvic acid, 2-oxo-glutaric acid, malonic acid, salicylic acid, tartaric acid, lactic acid, citric acid, malic acid, picolinic acid, argininosuccinic acid, 2,4,6-trihydroxybenzoic acid, dihydroxymalic acid, aspartic acid, glutathione, glutamic acid, glutamine, 3-methyl-2-oxovaleric acid, acotinic acid, and mixtures thereof.