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Low-temperature self-crosslinking polyacrylate pigment printing binding agent and preparation method thereof

A technology of polyacrylate and pigment printing, applied in the direction of ester copolymer adhesives, adhesive types, etc., can solve the problems of hand feeling, environmental protection, fastness and stability, etc., achieve bright color, low cost, The effect of the simplicity of the polymerization process

Inactive Publication Date: 2012-03-28
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with similar foreign products, the adhesives produced in my country still have a gap in terms of hand feeling, environmental protection, fastness and stability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 50.0 g of butyl acrylate, 25.0 g of isooctyl acrylate, 13.0 g of methyl methacrylate, 4.0 g of acrylonitrile, 2.0 g of methacrylic acid, 3.0 g of hydroxypropyl acrylate, 2.0 g of diacetone acrylamide, and 1.7 g of emulsifier g, 60g of deionized water, uniformly stirred to make a pre-emulsion; 0.4g of potassium persulfate was dissolved in 8.0g of deionized water to prepare an initiator solution; in the polymerization reactor, add 25.0g of deionized water and 0.8 g and 0.3 g of sodium bicarbonate, stir evenly; add 14 g of the above-mentioned pre-emulsion and 2 g of the above-mentioned initiator solution to the polymerization reactor, heat up to 78 ° C, and after the blue light appears in the emulsion in the polymerization reactor, pour the Continuously drop the remaining pre-emulsion and initiator solution 6g in the medium, after 2 hours of continuous dripping, add the remaining initiator solution, raise the temperature to 85°C, keep it for 1h, then lower the temperature t...

Embodiment 2

[0032] 60.0 g of butyl acrylate, 16.0 g of isooctyl acrylate, 10.0 g of methyl methacrylate, 4.0 g of acrylonitrile, 2.0 g of methacrylic acid, 4.0 g of hydroxypropyl acrylate, 2.5 g of diacetone acrylamide, and 2.0 g of emulsifier g, 60g of deionized water, uniformly stirred to make a pre-emulsion; 0.35g of potassium persulfate was dissolved in 7.0g of deionized water to prepare an initiator solution; in the polymerization reactor, add 25.0g of deionized water and 1.0 g and 0.2 g of sodium bicarbonate, and stir evenly; add 15 g of the above-mentioned pre-emulsion and 2.5 g of the above-mentioned initiator solution to the polymerization reactor, and heat up to 80° C. Continuously drop the remaining pre-emulsion and initiator solution 7g into the kettle, after 3 hours of continuous dripping, add the remaining initiator solution, raise the temperature to 90°C, keep it warm for 0.5h, then lower the temperature to below 40°C, Adjust the pH value to 7; dissolve 1.5g of adipic acid ...

Embodiment 3

[0036] 68.0g of butyl acrylate, 8.0g of ethyl acrylate, 7.0g of methyl methacrylate, 7.0g of styrene, 2.5g of methacrylic acid, 3.0g of hydroxypropyl acrylate, 3.0g of diacetone acrylamide, 2.0g of emulsifier , 60g of deionized water, stirred evenly to make a pre-emulsion; 0.35g of potassium persulfate was dissolved in 7.0g of deionized water to prepare an initiator solution; in the polymerization reactor, 25.0g of deionized water and 1.0g of emulsifier were added And sodium bicarbonate 0.2g, stir evenly; Add above-mentioned pre-emulsion 16g and above-mentioned initiator solution 2.3g in the polymerization reactor, be warmed up to 82 ℃, after the blue light appears in the emulsion in the polymerization reactor, then add to the polymerization reactor Continuously drop the remaining pre-emulsion and initiator solution 8g in the medium, after 2.5 hours of continuous dropping, add the remaining initiator solution, raise the temperature to 88°C, keep it for 1h, then lower the temper...

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Abstract

The invention discloses a low-temperature self-crosslinking polyacrylate pigment printing binding agent and a preparation method thereof. The method comprises the following steps of: based on part by mass, preparing pre-emulsion from 70-90 parts of soft monomer, 10-30 parts of hard monomer, 5-10 parts of crosslinking monomer, 2-5 parts of ketone-containing carbonyl monomer, 0.6-3.0 parts of emulsifier and 50-70 parts of de-ionized water; adding 25-33 parts of de-ionized water, 0.2-1.0 part of emulsifier and 0.2-0.6 part of pH buffer; adding 14-16 parts of pre-emulsion and 2-2.5 parts of initiator solution; heating to 78-82 DEG C; dropwise adding remaining pre-emulsion and initiator solution after blue light occurs; heating to 85-90 DEG C and preserving heat for 0.5-1 hour; then cooling to be below 40 DEG C; adjusting pH value to be 6.5-7.0; and finally adding solution formed by dissolving 1-3 parts of hydrazide based monomer in 4-5 parts of de-ionized water. The agent is a formaldehyde-free environmentally-friendly product.

Description

technical field [0001] The invention relates to the field of polyacrylate adhesive emulsion for pigment printing, in particular to a low-temperature self-crosslinking acrylate pigment printing adhesive and a preparation method thereof. Background technique [0002] Pigment printing is a printing method in which finely dispersed pigment particles are attached to fabrics by means of a binder. Pigment printing has the advantages of simple process, energy saving and less environmental pollution. At present, the global pigment printing fabric accounts for more than 70% of the total output of printed cloth. In recent years, my country's pigment printing has also made great progress, but the product structure is not yet reasonable. Most of the middle and low-end products have meager profits. The quality and grade of pigment printing products depend to a large extent on the performance of pigment printing adhesives, so preparing high-performance adhesives is the most important meas...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F220/14C08F220/46C08F212/08C08F218/08C08F218/00C08F2/24C09J133/08D06P1/52
Inventor 涂伟萍卢杰宏胡剑青王锋
Owner SOUTH CHINA UNIV OF TECH
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