Acid digital printing pretreatment agent and preparation method thereof
A pre-treatment agent, digital printing technology, applied in the direction of dyeing, textile and papermaking, etc., can solve the problems of insufficient printing depth, clarity and fastness
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Embodiment 1
[0051] The formula of acidic digital printing pretreatment agent in the present embodiment is as follows:
[0052]
[0053] The present invention provides a kind of preparation method of above-mentioned acid digital printing pretreatment agent, it comprises:
[0054] 1) The preparation method of modified cellulose 1
[0055] 2.45 parts by weight of hydroxyethyl cellulose (DS.=1.0) and 2.45 parts by weight of carboxymethyl cellulose (DS.=1.1) were mixed and dispersed at a concentration of 50 parts by weight 70wt.% ethanol solution, adding 2.45 parts by weight of NaOH solution with a concentration of 0.07wt.%, alkalized at room temperature for 30min, and adding 0.1g part of epichlorohydrin dropwise, The temperature was raised to 50°C for etherification reaction for 3h. The reacted products were washed with absolute ethanol and filtered three times, and dried in an oven at 50° C. for 24 hours to obtain 5 parts by weight of modified cellulose 1 .
[0056] 2) The preparation ...
Embodiment 2
[0063] The formula of acidic digital printing pretreatment agent in the present embodiment is as follows:
[0064]
[0065] The present invention provides a kind of preparation method of above-mentioned acid digital pretreatment agent, it comprises:
[0066] 1) The preparation method of modified cellulose 2
[0067] 4.9 parts by weight of hydroxyethyl cellulose (DS.=1.5) and 4.9 parts by weight of carboxymethyl cellulose (DS.=1.8) were mixed and dispersed at a concentration of 100 parts by weight 70wt.% ethanol solution, adding 4.9 parts by weight of NaOH solution with a concentration of 0.07wt.%, alkalized at room temperature for 30min, and adding 0.2g parts by weight of epichlorohydrin dropwise, The temperature was raised to 50°C for etherification reaction for 3h. The reacted products were washed with absolute ethanol and filtered three times, and dried in an oven at 50° C. for 24 hours to obtain 10 parts by weight of modified cellulose 2 .
[0068] 2) The preparation...
Embodiment 3
[0075] The formula of acidic digital printing pretreatment agent in the present embodiment is as follows:
[0076]
[0077] The invention provides a kind of preparation method of above-mentioned acid digital pretreatment agent, it comprises:
[0078] 1) Preparation method of modified cellulose 3
[0079]3.43 parts by weight of hydroxyethyl cellulose (DS.=1.5) and 3.43 parts by weight of carboxymethyl cellulose (DS.=1.5) were mixed and dispersed at a concentration of 70 parts by weight 70wt.% ethanol solution, adding 3.43 parts by weight of NaOH solution with a concentration of 0.07wt.%, alkalized at room temperature for 30min, adding 0.14g parts of epichlorohydrin dropwise, The temperature was raised to 50°C for etherification reaction for 3h. The reacted products were washed with absolute ethanol and filtered three times, and dried in an oven at 50° C. for 24 hours to obtain 7 parts by weight of modified cellulose 3 .
[0080] 2) The preparation method of modified carbo...
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