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Styrene-acrylic latex for papermaking and preparation method thereof

A styrene-acrylic latex and acrylate technology, which is applied in papermaking, textiles, papermaking, paper coatings, etc., can solve the problems of bond strength and ink absorption to be improved, and achieve the effect of improving bondability.

Inactive Publication Date: 2020-04-10
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN107556418A discloses a styrene-acrylic emulsion for papermaking and its preparation method. The prepared emulsion is relatively low in VOC when applied to paper coatings, but the bond strength and ink absorption of paper still need to be improved

Method used

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  • Styrene-acrylic latex for papermaking and preparation method thereof
  • Styrene-acrylic latex for papermaking and preparation method thereof
  • Styrene-acrylic latex for papermaking and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of styrene-acrylic latex for papermaking:

[0026] In a 2000ml reactor, add 0.1g of sodium lauryl sulfate, 0.1g of potassium persulfate, and 50g of distilled water to completely dissolve into an aqueous solution, start stirring, and heat up to 60°C. At the same time, 1 g of acrylic acid, 50 g of n-butyl acrylate, 100 g of styrene, and 0.5 g of hydroxyethyl acrylate were added dropwise at 60°C; and 0.4 g of sodium lauryl sulfate, 0.2 g of sorrel A mixed aqueous solution of alcohol monooleate (Span 80), 0.4 gram of potassium persulfate, and 48.46 gram of distilled water. The dropwise addition time was 6 hours. After the dropwise addition, the temperature was kept at 60° C. for 2 hours. Add 0.5 g of 60 wt% water-based epoxy resin S128-1 (Yangzhou Zhongjiang Material Technology Co., Ltd.), and continue to keep warm at 60° C. for 2 hours. Cool to 25° C., and neutralize with 5 grams of 20 wt % ammonium hydroxide aqueous solution. Filtrate through a 100-mesh si...

Embodiment 2

[0028] Preparation of styrene-acrylic latex for papermaking:

[0029] 2000ml reactor, add 2 grams of sodium dodecyl naphthalene sulfonate, 1 gram of sorbitan monooleate (Span 80), 1 gram of sodium persulfate, 200 grams of distilled water, 5 grams of styrene, completely dissolved into aqueous solution, start stirring, and raise the temperature to 90°C. At the same time, 10 grams of methacrylic acid, 100 grams of 2-ethylhexyl acrylate, 50 grams of methyl methacrylate, 95 grams of methyl styrene, and 5 grams of mixed monomers of hydroxypropyl acrylate were added dropwise at 90 ° C. and a mixed aqueous solution of 3 grams of sodium dodecyl naphthalene sulfonate, 1 gram of sorbitan monolaurate (Span 20), 4 grams of sodium persulfate, and 215.5 grams of distilled water. The dropwise addition time was 2 hours. After the dropwise addition was completed, the temperature was kept at 90° C. for 0.5 hours. Add 30 grams of 40 wt% water-based epoxy resin (Jinan Qingtian Chemical Technolo...

Embodiment 3

[0031] Preparation of styrene-acrylic latex for papermaking:

[0032] In a 2000ml reactor, add 0.5g sodium lauryl sulfate, 0.5g ammonium persulfate, 150g distilled water, 2g styrene, completely dissolve into an aqueous solution, start stirring, and raise the temperature to 80°C. At the same time, 5 grams of methacrylic acid, 15 grams of acrylonitrile, 50 grams of isobutyl acrylate, and 98 grams of styrene were added dropwise at 80°C; and 2 grams of sodium dialkyl-2-sulfosuccinate, A mixed aqueous solution of 1.5 grams of polyoxypropylene stearate, 2 grams of ammonium persulfate, 2 grams of acrylamide, and 21.5 grams of distilled water. The dropwise addition time was 4 hours. After the dropwise addition was completed, the temperature was kept at 80° C. for 1 hour. Add 15 grams of 50 wt% water-based epoxy resin S128-3 (Yangzhou Zhongjiang Material Technology Co., Ltd.), and continue to keep warm at 80° C. for 1 hour. Cool to 25° C., and neutralize with 10 grams of 30 wt % sod...

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Abstract

The invention discloses styrene-acrylic latex for papermaking, which is prepared by copolymerizing an aqueous solution of a mixture of a carboxylic acid monomer, a (methyl) acrylate monomer, a (methyl) styrene monomer, a cross-linking monomer, waterborne epoxy resin, an anionic emulsifier, a nonionic emulsifier and an initiator through free radical emulsion. The emulsion obtained by sequentially grafting the cross-linking monomer and the waterborne epoxy resin on the styrene-acrylic latex is applied to the papermaking coating, so that the surface strength of paper can be improved, and the inkabsorptivity of the paper can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of binders for papermaking coatings, in particular to a styrene-acrylic latex for papermaking and a preparation method thereof. Background technique [0002] Styrene-acrylic latex is widely used in the bonding of paper coatings. During the application process, the performance requirements of the emulsion are getting higher and higher. With the improvement and development of emulsion application technology, the emulsion is required to have good process applicability. Among them, some or all of the styrene-acrylic latex replaces the conventional styrene-butadiene latex in the paper coating. The gloss and other properties of paper printing will be improved. . [0003] Chinese patent CN107556418A discloses a styrene-acrylic emulsion for papermaking and its preparation method. The prepared emulsion is relatively low in VOC when applied to paper coatings, but the bond strength and ink absorption of paper still ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/06C08F220/18C08F220/20C08F220/14C08F212/12C08F220/46D21H19/38D21H19/40D21H19/62D21H19/56D21H19/58D21H21/14
CPCC08F212/08C08F212/12D21H21/14D21H19/385D21H19/40D21H19/56D21H19/58D21H19/62C08F220/14C08F220/20C08F220/06
Inventor 施晓旦尹东华金霞朝
Owner SHANGHAI DONGSHENG NEW MATERIALS