公开(公告)号：US5772699A

公开(公告)日：1998-06-30

申请号：US799023

申请日：1997-02-10

申请人： Andrew D. Boyer

发明人： Andrew D. Boyer

IPC分类号： C09B67/26 ,  D06P1/38 ,  D06P1/647 ,  D06P1/653 ,  D06P1/382 ,  C09B62/503

CPC分类号： D06P1/647 ,  C09B67/0073 ,  D06P1/38 ,  D06P1/6533

摘要： An aqueous reactive dye composition is disclosed. The aqueous reactive dye composition has improved storage stability and contains a water-soluble reactive dye and a chelating agent. The chelating agent is present in a sufficient concentration to maintain the pH of the aqueous reactive dye composition in the range of about 3.0 to about 7.0 and, preferably, about 5.0 to about 6.5. Desirable chelating agents are dicarboxylic acids, such as succinic acid, or amino carboxylates, such as nitrilotriacetic acid. A method of stabilizing an aqueous reactive dye composition is disclosed and includes the step of dissolving a polycarboxylic acid or an amino carboxylate in an aqueous solution of a water-soluble reactive dye in a sufficient concentration to stabilize the pH of the composition.

摘要翻译： 公开了一种水性活性染料组合物。 水性活性染料组合物具有改善的储存稳定性并含有水溶性活性染料和螯合剂。 螯合剂以足够的浓度存在，以将含水活性染料组合物的pH维持在约3.0至约7.0，优选约5.0至约6.5的范围内。 理想的螯合剂是二羧酸，例如琥珀酸，或氨基羧酸盐，如次氮基三乙酸。 公开了稳定水性活性染料组合物的方法，包括以足够浓度将多羧酸或氨基羧酸盐溶解在水溶性活性染料的水溶液中以稳定组合物的pH的步骤。