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Fine partical size styrene-acrylic latex for coated paper under-coating paint and preparation method and application thereof

A technology of coated paper and fine particle size, applied in paper coating, papermaking, coating, etc., can solve the problem of poor surface strength of paper, and achieve the effect of enhancing surface strength and reducing the phenomenon of lint and powder loss.

Active Publication Date: 2010-08-25
SHANGHAI DONGSHENG NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN101280035A discloses a method for preparing an emulsion. The prepared emulsion is applied to paper coatings. The fluidity and water resistance of the coating are good, but the surface strength of the paper is poor after coating on paper.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] 1) Synthesis of seed emulsion:

[0059] a) 15 g of n-butyl acrylate and 85 g of styrene are mixed to obtain mixed monomer II.

[0060] b) 10g polyvinyl alcohol 0588 (Guangzhou Qisheng Chemical Co., Ltd.), 10g nonylphenol polyoxyethylene (7) ether (Guangzhou Junxin Chemical Technology Co., Ltd.), 0.1g polypropylene glycol PPG-200 (Jiangsu Province) Haian Petrochemical Plant), 0.5g potassium persulfate and 180.9g deionized water were mixed, kept at 90°C for 10 minutes, and added the mixed monomer II in step a).

[0061] c) Keep the temperature at 90°C for 1 hour, lower the temperature to 25°C, filter with a 100-mesh sieve to obtain the seed emulsion, weight solid content: 39.68wt%, average particle size 39.3nm (measured with Malven particle size analyzer), pH= 5.93 (measured with PHS-3C precision pH meter).

[0062] 2) Synthesis of fine particle size acrylonitrile latex for coating paper primer:

[0063] a) Mix 25 g of n-butyl acrylate, 70 g of styrene and 5 g of acrylic acid to ...

Embodiment 2

[0070] 1) Synthesis of seed emulsion:

[0071] a) Mix 5 g of ethyl acrylate and 95 g of methyl styrene to obtain mixed monomer II.

[0072] b) 20g polyvinyl alcohol 1788 (Guangzhou Qisheng Chemical Co., Ltd.), 20g nonylphenol polyoxyethylene (10) ether (Guangzhou Junxin Chemical Technology Co., Ltd.), 2g polypropylene glycol PPG-400 (Jiangsu Province Haian Petrochemical plant), 2g of ammonium persulfate and 576g of deionized water are mixed, kept at 90°C for 30 minutes, and the mixed monomer II in step a) is added.

[0073] c) Incubate at 90°C for 3 hours, lower the temperature to 25°C, filter with a 100-mesh sieve to obtain a seed emulsion, weight solid content: 20.5wt%, average particle size 23.5nm (measured with Malven particle size analyzer), pH= 2.15 (measured with PHS-3C precision pH meter).

[0074] 2) Synthesis of fine particle size acrylonitrile latex for coating paper primer:

[0075] a) Mix 69 g of ethyl acrylate, 30 g of methyl styrene and 1 g of methacrylic acid to make a...

Embodiment 3

[0082] 1) Synthesis of seed emulsion:

[0083] a) Mix 5 g of methyl methacrylate, 5 g of 2-ethylhexyl acrylate, and 90 g of methyl styrene to obtain mixed monomer II.

[0084] b) Combine 15g polyvinyl alcohol 2488 (Guangzhou Qisheng Chemical Co., Ltd.), 15g nonylphenol polyoxyethylene (15) ether (Guangzhou Junxin Chemical Technology Co., Ltd.), and 1g polypropylene glycol PPG-600 (Jiangsu Province Haian Petrochemical plant), 1 g of sodium persulfate and 308 g of deionized water are mixed, kept at 80° C. for 20 minutes, and mixed monomer II in step a) is added.

[0085] c) Keep the temperature at 80℃ for 2 hours, lower the temperature to 25℃, filter with 100 mesh screen to obtain seed emulsion, weight solid content: 30.33wt%, average particle size 32.0nm (measured with Malven particle size analyzer), pH= 3.85 (measured with PHS-3C precision pH meter).

[0086] 2) Synthesis of fine particle size acrylonitrile latex for coating paper primer:

[0087] a) Mix 20 g of methyl methacrylate, 2...

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Abstract

The invention discloses fine partical size styrene-acrylic latex for coated paper under-coating paint and a preparation method and application thereof. The styrene-acrylic latex is prepared by using the following raw materials in parts by weight through emulsion polymerization: 4-15 parts of seed emulsion, 100 parts of mixed monomer, 0.7-4.5 parts of emulsifier, 0.4-4.5 parts of initiator, 0.5-1.5 parts of accelerator, 2-8 parts of cross-linked monomer, 4-20 parts of aqueous alkali and 90-290 parts of water, wherein the mixed monomer is formed by the following monomers in parts by weight: 25-69 parts of (methyl) acrylic ester, 30-70 parts of (methyl) styrene and 1-5 parts of (methyl) crylic acid. The fine partical size styrene-acrylic latex for the coated paper under-coating paint is a high-performance and environment-friendly product which can be used for papermaking paint. If the product is applied to the under-coating paint of the coated paper, the surface strength of the coated paper can be obviously enhanced and the situation of picking can be reduced.

Description

Technical field [0001] The invention relates to a styrene-acrylic latex, which is applied to a primer coating of coated paper. Background technique [0002] Emulsion is widely used for the bonding of paper coatings. In the application process, the performance requirements of the emulsion are getting higher and higher. With the improvement and development of emulsion application technology, emulsions are required to have good process applicability. Among them, the most important thing is the cohesiveness of fine particle size acrylic latex. Emulsion used in paper coatings can significantly increase the surface strength of the paper and improve the gloss of the paper. [0003] Chinese patent CN101280035A discloses a preparation method of emulsion. The prepared emulsion is applied to paper coatings. The coating has good fluidity and water resistance, but the paper surface strength is poor after coating on paper. Summary of the invention [0004] The purpose of the present invention i...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F212/12C08F220/14C08F220/18C08F220/06C08F2/30C08F2/26D21H19/00D21H19/12
Inventor 施晓旦尹东华王养臣
Owner SHANGHAI DONGSHENG NEW MATERIALS
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