染料在水相中之溶解度或分散性，在油墨應用之展色性影響頗為重要;可是在水性油墨用途時，溶解性良好之染料卻有油墨色牢度較差的現象，因此水性油墨面臨展色性和色牢度兩者無法兼備的困境。因此本研究係利用含羧酸基之水性高分子材料上之異氰酸酯或環氧基等反應性官能基與染料之官能基進行加成反應，使染料成為水性高分子的一部份，此種改良型水性高分子染料，具有良好之水分散性，使得此種改良型水性高分子染料在水相中與自行製備之水性高分子架橋劑形成單液型常溫可架橋之水性高分子油墨，此新型水性高分子油墨配方在水相之安定性和展色性兩者均佳，進而在油墨印刷，書寫或染印等應用時，經乾燥時則產生高分子架橋反應，使此水性高分子油墨變成耐水性極佳之圖案或文字。本研究製備穩定的單液型常溫可架橋之水性高分子油墨，不僅符合環保，安全和工業衛生等要求，而且同時也解決傳統水性油墨所造成不耐水的困擾。 The good water solubility of dye is important for the color extension on dying, however, it also causes the poor color fastness on final application. The conventional aqueous-based ink also faces the similar dilemma of color extension and color fastness. This invention is ultilizing carboxy group containing aqueous-based polymer as a polymeric dye base and its isocyanate or epoxy group reacts with a functional group of dye. After the reaction, dye becomes part of aqueous-based polymer and results in the formation of aqueous-based polymeric dye. A stable single-pack ambient temperature curable aqueous-based polymeric ink is formulated by mixing this aqueous-based polymeric dye and the prepared latent curing agent. This new stable aqueous-based polymeric ink becomes water-resist on drying for printing, writing or dying application. Due to a curing reaction takes place between the latent curing agent and aqueous-based polymeric dye. This innovation of single-pack ambient temperature curable aqueous-based polymeric ink not only meets the requirements of environmental, safety and industrial hygiene and also solves the water-resistance handicap of conventional aqueous-based ink.
