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Preparation method of printing adhesive for digital printing

A digital printing and adhesive technology, applied in the field of digital printing, can solve the problems of pigment ink flocculation, precipitation, ink nozzle agglomeration, etc.

Active Publication Date: 2021-08-24
TAISHAN XINKE CHEM IND PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the binders used for fabric pigment printing are polymer emulsions. After the binders of traditional pigment printing are made into pigment inks, they are affected by temperature, time or bacterial growth, causing the pigment inks to flocculate and precipitate, thus In digital printing, the ink is agglomerated at the nozzle, and problems such as nozzle clogging occur, which affect the normal printing work

Method used

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  • Preparation method of printing adhesive for digital printing
  • Preparation method of printing adhesive for digital printing
  • Preparation method of printing adhesive for digital printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation method of the printing adhesive that is used for digital printing specifically comprises the following steps:

[0035] S1, preparation of epoxy trisiloxane

[0036] 11mol heptamethyltrisiloxane, 10mol allyl glycidyl ether, 100ml solvent ethylene glycol dimethyl ether and 5mmol catalyst Ni(CO) 4 Add it into the reaction flask, reflux reaction for 6h, and obtain epoxy trisiloxane through hydrosilylation reaction, the reaction formula is as follows:

[0037]

[0038] S2, preparation of antibacterial dispersant

[0039] After mixing 1kg chitosan and 6mol trimethylamine hydrochloride evenly, put it into the epoxy trisiloxane prepared by S1, add 120ml acid catalyst, and the acid catalyst is SnCl 4 Mixture with 20% hydrochloric acid aqueous solution in the ratio of 1mg:18ml; heated to 75°C for ring-opening reaction for 3h, the antibacterial dispersant of formula A structure is obtained; wherein the deacetylation degree of chitosan powder is 85%-99 %;

[...

Embodiment 2

[0052] The preparation method of the printing adhesive that is used for digital printing specifically comprises the following steps:

[0053] S1, preparation of epoxy trisiloxane

[0054] 12mol heptamethyltrisiloxane, 10mol allyl glycidyl ether, 100ml solvent ethylene glycol dimethyl ether and 7mmol catalyst Ni(CO) 4 Add it into the reaction flask, reflux reaction for 7h, and obtain epoxy trisiloxane through hydrosilylation reaction, the reaction formula is as follows:

[0055]

[0056] S2, preparation of antibacterial dispersant

[0057] After mixing 1kg chitosan and 7mol trimethylamine hydrochloride evenly, put it into the epoxy trisiloxane prepared by S1, add 100ml acid catalyst, and the acid catalyst is SnCl 4 Mixture with 20% hydrochloric acid aqueous solution in the ratio of 1mg:20ml; heated to 85°C for ring-opening reaction for 4h, the antibacterial dispersant of formula A structure is obtained; wherein the degree of deacetylation of chitosan powder is 85%-99 %; ...

Embodiment 3

[0070] The preparation method of the printing adhesive that is used for digital printing specifically comprises the following steps:

[0071] S1, preparation of epoxy trisiloxane

[0072] 12mol heptamethyltrisiloxane, 10mol allyl glycidyl ether, 100ml solvent ethylene glycol dimethyl ether and 6mmol catalyst Ni(CO) 4 Add it into the reaction flask, reflux reaction for 7h, and obtain epoxy trisiloxane through hydrosilylation reaction, the reaction formula is as follows:

[0073]

[0074] S2, preparation of antibacterial dispersant

[0075] After mixing 1kg chitosan and 7mol trimethylamine hydrochloride evenly, put it into the epoxy trisiloxane prepared by S1, add 110ml acid catalyst, and the acid catalyst is SnCl 4 Mixture with 20% hydrochloric acid aqueous solution at a ratio of 1mg:19ml; heated to 70°C for ring-opening reaction for 3h, the antibacterial dispersant of formula A structure is obtained; wherein the deacetylation degree of chitosan powder is 85%-99 %;

[00...

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Abstract

The invention discloses a method for preparing a printing adhesive for digital printing, which specifically comprises the following steps: firstly, heptamethyltrisiloxane and allyl glycidyl ether are synthesized by hydrosilylation The epoxy group trisiloxane of oxygen group, then under the effect of acid catalyst, the epoxy group of epoxy group trisiloxane and the alcoholic hydroxyl group in chitosan and quaternary ammonium salt carry out ring-opening reaction respectively, prepare Obtain antibacterial dispersant, then introduce acid anhydride group, the obtained chitosan derivatives and activated starch carry out esterification reaction, thus have prepared printing adhesive; This printing adhesive can be used for the digital printing printing of fabric, has Good adhesion, used for printing pigment ink will not agglomerate and block the nozzle, the printed fabric has good antibacterial properties, softness and high fastness, and the increase of the adhesive will not produce a hard feel, still Maintain the soft comfort of printed fabrics.

Description

technical field [0001] The invention belongs to the technical field of digital printing, and in particular relates to a method for preparing a printing adhesive for digital printing. Background technique [0002] Digital printing technology has the obvious advantages of convenient operation and low pollution, which is the development trend of printing and dyeing in the future. The binder in pigment ink is the largest component of pigment ink, and it is the main factor affecting the fastness and hand feel of printed products. [0003] The biggest difference between pigments and dyes is: dyes are soluble in water, while pigments are insoluble in water; dyes have affinity for fibers, while pigments do not. Pigment ink is able to exist stably on the fabric due to the function of the binder. In order to ensure that digital printing products have good dry rubbing fastness and wet rubbing fastness, it is necessary to add a binder to the pigment ink to ensure that the pigment Part...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/48D06P1/52C08G81/00C08B37/08
CPCC08B37/003C08G81/00D06P1/48D06P1/5264
Inventor 不公告发明人
Owner TAISHAN XINKE CHEM IND PRODS
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