Novel formaldehyde-free fixing agent
A formaldehyde-free color-fixing agent and color-fixing agent technology, applied in the field of color-fixing agents, can solve problems such as unsatisfactory color fastness to wet rubbing, improve color-fixing effect, enhance cationicity, and skin irritation small effect
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Embodiment 1
[0016] Add a certain amount of water and diethylenetriamine (AE) into the reaction vessel, heat up to 50°C while stirring, add epichlorohydrin (EP) dropwise, and continue to react for 2 hours after the dropwise addition, to obtain the pH value of the reaction solution 8, adjusted to 6 with glacial acetic acid, then continued to heat up to 70°C, added dropwise dimethyl diallyl ammonium chloride (DMDAAC), reacted for 4 hours after the dropwise addition, and the pH value of the reaction solution was 7.5. Cool to room temperature and discharge to get the finished product. In the reaction, each material is charged according to the following ratio, and the monomer molar ratio of diethylenetriamine, epichlorohydrin and dimethyl diallyl ammonium chloride (DMDAAC) is 2: 2: 1, and the prepared color fixing agent The solid content is 10%.
Embodiment 2
[0018] Add a certain amount of water and diethylenetriamine (AE) into the reaction vessel, heat up to 40°C while stirring, add epichlorohydrin (EP) dropwise, and continue to react for 2 hours after the dropwise addition, to obtain the pH value of the reaction solution 6.5, continue to heat up to 80 ° C, dropwise add dimethyl diallyl ammonium chloride (DMDAAC), react for 2 hours after the dropwise addition, the pH value of the reaction solution obtained is 7.0, cool to room temperature, and the material is ready Get the finished product. In the reaction, each material is charged according to the following ratio, and the monomer molar ratio of diethylenetriamine, epichlorohydrin and dimethyl diallyl ammonium chloride (DMDAAC) is 2: 2: 1, and the prepared color fixing agent The solid content is 10%.
Embodiment 3
[0020] Add a certain amount of water and diethylenetriamine (AE) into the reaction vessel, raise the temperature to 45°C while stirring, add epichlorohydrin (EP) dropwise, and continue the reaction for 1 hour after the dropwise addition, to obtain the pH value of the reaction solution 8, adjusted to 6 with glacial acetic acid, then continued to heat up to 60°C, added dropwise dimethyl diallyl ammonium chloride (DMDAAC), reacted for 4 hours after the dropwise addition, and the pH value of the reaction solution was 7.5. Cool to room temperature and discharge to get the finished product. In the reaction, each material is charged according to the following ratio, and the monomer molar ratio of diethylenetriamine, epichlorohydrin and dimethyl diallyl ammonium chloride (DMDAAC) is 2: 2: 1, and the prepared color fixing agent The solid content is 10%.
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