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Quick-dry rosin-based waterborne UV-curable paper surface sizing agent with high water resistance and preparation method thereof

A surface sizing agent and rosin-based technology, which is applied in the field of preparation of water-based surface sizing agents, can solve problems such as long-time drying, and achieve the effect of broadening applications

Active Publication Date: 2016-11-02
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sizing agent mainly solves 1) the problem that general sizing agents (such as styrene-acrylic emulsion, etc.) need to be dried for a long time; 3) The sizing agent adjusts the crosslinking density of the product by adjusting the molecular weight of the soft segment polyether or polyester diol in the structure, and prepares a sizing agent suitable for paper surface sizing. Adhesive high water resistance and fast drying rosin-based water-based UV curable paper surface sizing agent, which broadens the use of rosin in the field of papermaking

Method used

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  • Quick-dry rosin-based waterborne UV-curable paper surface sizing agent with high water resistance and preparation method thereof
  • Quick-dry rosin-based waterborne UV-curable paper surface sizing agent with high water resistance and preparation method thereof
  • Quick-dry rosin-based waterborne UV-curable paper surface sizing agent with high water resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Step 1: add the maleopimaric acid of 20g in dry reactor (infrared spectrum and proton nuclear magnetic resonance spectrum are attached respectively figure 1 with 2 shown), 15mL of dichloromethane and 0.02g of N,N-dimethylformamide, at 0°C, dropwise add a mixture of 5.95g of thionyl chloride and 5mL of dichloromethane, drop it within 30 minutes, and then Heat up to 50°C and reflux for 6 hours;

[0037] Step 2: Cool down to 0°C, then slowly add 5g of polyethylene glycol to the above reactor, drop it within 30 minutes, and then quickly add 5g of acid-binding agent triethylamine. After the addition, react at 0°C for 2 hours, and react at 25°C for 4 hours, then evaporate the solvent under reduced pressure;

[0038] Step 3: Add 5.8g of hydroxyethyl acrylate, 0.15g of p-toluenesulfonic acid and 0.03g of hydroquinone into the above reactor, and react at 90°C for 3 hours to obtain prepolymerized rosin-based polyether acrylate Body, after infrared spectroscopy (as attached i...

Embodiment 2

[0042] Step 1: Add 20g of maleopimaric acid, 15mL of dichloromethane and 0.02g of N,N-dimethylformamide to a dry reactor, add 5.95g of thionyl chloride and 5mL of di The mixed solution of methyl chloride was dropped within 30 minutes, then heated to 50-℃ and refluxed for 6 hours;

[0043] Step 2: Cool down to 0°C, then slowly add 5g of polyethylene glycol to the above reactor, drop it within 30 minutes, and then quickly add 5g of acid-binding agent triethylamine. After the addition, react at 0°C for 2 hours, and react at 25°C for 4 hours, then evaporate the solvent under reduced pressure;

[0044] Step 3: Add 2.6015g hydroxyethyl acrylate, 0.0014g pentaerythritol tripropylene ester, 0.15g p-toluenesulfonic acid and 0.03g hydroquinone into the above reactor, blow nitrogen for 15 minutes, and then react at 90°C 3 hours, obtain rosin-based polyether acrylate prepolymer;

[0045] Step 4: cooling to 50° C., adding 6 g of neutralizing agent triethylamine to the rosin-based polyeth...

Embodiment 3

[0048] Step 1: Add 20g of maleopimaric acid, 15mL of dichloromethane and 0.02g of N,N-dimethylformamide to a dry reactor, add 5.95g of thionyl chloride and 5mL of di The mixed solution of methyl chloride was dropped within 30 minutes, then heated to 50°C and refluxed for 6 hours;

[0049] Step 2: Cool down to 0°C, then slowly add 5g of polyethylene glycol to the above reactor, drop it within 30 minutes, and then quickly add 5g of acid-binding agent triethylamine. After the addition, react at 0°C for 2 hours, and react at 25°C for 4 hours, then evaporate the solvent under reduced pressure;

[0050] Step 3: Add 0.15g p-toluenesulfonic acid and 0.03g hydroquinone into the above-mentioned reactor, ventilate nitrogen, then slowly drop the mixed solution of 2.6015g hydroxyethyl acrylate and 0.0014g pentaerythritol tripropylene into In the above reactor, the dripping is controlled within half an hour, and the reaction is carried out at 90° C. for 3 hours to obtain a rosin-based poly...

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Abstract

The invention provides a quick-dry rosin-based waterborne UV-curable paper surface sizing agent with high water resistance and a preparation method thereof. The waterborne UV-curable sizing agent is characterized in that a waterborne rosin-based polyether / polyesteracrylate UV-curable prepolymer used as main resin is compounded with a photoinitiator and water to prepare the waterborne UV sizing agent. The preparation method is characterized in that the concrete implementation method contains five steps: Step 1, preparation of maleopimaric monoacyl chloride; Step 2, preparation of a maleopimaric anhydride-terminated telechelic polymer; Step 3, preparation of rosin-based polyether / polyesteracrylate; Step 4, preparation of a waterborne rosin-based polyether / polyesteracrylate prepolymer; and Step 5, compounding of the waterborne rosin-based polyether / polyesteracrylate UV-curable resin and the photoinitiator and water. The product of the invention has characteristics of energy conservation and environment protection, fast drying speed and strong water resistance, etc.

Description

technical field [0001] A kind of preparation method of high water-resistant fast-drying type rosin-based water-based UV curable paper surface sizing agent, particularly relates to a kind of can be cured with UV lamp, drying speed is fast and high water-resistance (Cobb 60s A method for the preparation of rosin-based aqueous surface sizing agents. Background technique [0002] Surface sizing is one of the effective methods to improve the water (oil) resistance of paper or cardboard, improve the surface properties and physical strength of paper or cardboard. Since surface sizing has the advantages of high sizing agent retention rate (close to 100%), reducing the burden on the wet end of papermaking, reducing the load of water pollution, and improving the quality of paper, so choose a suitable surface sizing agent, through surface sizing While improving the liquid penetration resistance of paper or cardboard, it can also increase the physical strength of paper or cardboard, su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/16C08G65/332
CPCC08G65/3322C08G65/3328D21H21/16
Inventor 张宏伟肖欣蓉陈港赖秋杰
Owner SOUTH CHINA UNIV OF TECH
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