Ecological low-salt dyeing and finishing agent for reactive dyes and preparation method and applications thereof
A technology of reactive dyes and finishing agents, applied in the field of dyeing, can solve problems such as water source pollution and achieve the effect of improving the utilization rate
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Embodiment 1
[0027] Embodiment 1: a kind of reactive dye ecological low-salt dyeing finishing agent comprises the following components: crosslinked cationic modifier A and branched cationic modifier B, wherein the structural formula of crosslinked cationic modifier A is
[0028]
[0029] In the formula m=4;
[0030] The structural formula of the branched cationic modifier B is
[0031]
[0032] The weight ratio of the cross-linking cationic modifier A to the branched cationic modifier B is 50:50.
[0033] The preparation method of the above-mentioned reactive dye ecological low-salt dyeing and finishing agent, the method comprises the following steps:
[0034] 1) Synthesis of cross-linking cationic modifier A: Add dimethylamine dropwise to epichlorohydrin under stirring at a constant temperature of 30°C, wherein the molar ratio of epichlorohydrin: dimethylamine is 1.5 : 1, after dropwise addition, add polyamine cross-linking agent again, control cross-linking agent to account for 3...
Embodiment 2
[0047] Embodiment 2: basically the same as Example 1, the difference is: the weight ratio of cross-linked cationic modifier A and branched cationic modifier B is 30:50; the weight ratio of cross-linked cationic modifier A In the structural formula, m=6.
Embodiment 3: and Embodiment 1,:A and B40∶50;Am=8。 Embodiment 4
[0048]Embodiment 3: basically identical with embodiment 1, difference is: the weight ratio of cross-linking type cationic modifier A and branched chain type cationic modifier B is 40: 50; In the structural formula, m=8. Embodiment 4: basically identical with embodiment 1, difference is the preparation method of above-mentioned reactive dye ecological low-salt dyeing and finishing agent, and this method comprises the steps:
[0049] 1) Synthesis of cross-linking cationic modifier A: Add dimethylamine dropwise to epichlorohydrin under stirring at a constant temperature of 30°C, wherein the molar ratio of epichlorohydrin: dimethylamine is 1 : 2, after dropwise addition, add polyamine cross-linking agent again, control cross-linking agent to account for 3% (mole number ratio) of reaction monomer total amount; Continue to stir, and slowly rise to 70 ℃, constant temperature 70 ℃ React for 5h to obtain the cross-linked cationic modifier A;
[0050] 2) Synthesis of branched cationic...
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