DYEING METHOD FOR PROTEIN BASED NATURAL FIBERS WITH FLUORESCENT PROPERTIES.

摘要

The present invention concerns a dyeing method for the colouring or dyeing a protein-based natural fibre by means of a fluorescent dye or a fluorescent pigment, including the following steps: (a) preparing a natural fibre in a dyeing tank with water; (b) adding a siloxane agent to said tank; c) dispersing a liquid colouring solution comprising a fluorescent dye or fluorescent pigment in said tank; d) heating said dyeing tank comprising said natural fibre, said siloxane agent and said colouring solution at a temperature of between 50 °C and 70 °C, preferably at 60 The present invention concerns a dyeing method for the colouring or dyeing a protein-based natural fibre by means of a fluorescent dye or a fluorescent pigment, including the following steps: (a) preparing a natural fibre in a dyeing tank with water; (b) adding a siloxane agent to said tank; c) dispersing a liquid colouring solution comprising a fluorescent dye or fluorescent pigment in said tank; d) heating said dyeing tank comprising said natural fibre, said siloxane agent and said colouring solution at a temperature of between 50 °C and 70 °C, preferably at 60 °C; e) keeping said temperature constant for a time comprised between 1 and 3 hours; wherein said fluorescent pigment is a pigment, comprising: - an inorganic matrix having a lamellar conformation, - an organic fluorescent filler configured to be intercalated or absorbed between the lamellae of said inorganic matrix. C; e) keeping said temperature constant for a time comprised between 1 and 3 hours; wherein said fluorescent pigment is a pigment, comprising: - an inorganic matrix having a lamellar conformation, - an organic fluorescent filler configured to be intercalated or absorbed between the lamellae of said inorganic matrix.