Styrene-acrylate emulsion for surface coatings of coated paper

A styrene-acrylic emulsion and coating technology, used in paper coatings, coatings, papermaking, etc., can solve the problems of poor paper surface strength and paper gloss, and achieve the effect of improving gloss and enhancing surface strength

Active Publication Date: 2010-05-12
SHANGHAI DONGSHENG NEW MATERIALS
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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 after coating on the paper is poor, and the gloss of the paper after coating is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A kind of synthesis of styrene-acrylic emulsion for coated paper surface coating:

[0047] a) Mix 20g of n-butyl acrylate, 74g of styrene and 6g of acrylic acid to make a mixed monomer. spare.

[0048] b) 0.05 g of sodium dodecylbenzenesulfonate, 0.05 g of polyoxyethylene (20) sorbitan monooleate (Tween 80), and 0.1 g of potassium persulfate were dissolved in 10 g of deionized water. spare.

[0049] c) Dissolve 2 g of methacrylamidoethyl ethylene urea in 10 g of deionized water. spare.

[0050] d) Add 0.4g sodium dodecylbenzenesulfonate, 0.1g polyoxyethylene (20) sorbitan monooleate (Tween 80), 0.2g potassium persulfate to the mixed monomer in the step of 80ga) and 50g of deionized water were dissolved into an aqueous solution and stirred for 30 minutes. spare.

[0051]e) Add 0.05g sodium dodecylbenzenesulfonate, 0.05g polyoxyethylene (20) sorbitan monooleate (Tween 80), 0.1g potassium persulfate to the mixed monomer in the step of 20ga) and 25.1 g of deionized w...

Embodiment 2

[0054] A kind of synthesis of styrene-acrylic emulsion for coated paper surface coating:

[0055] a) Mix 40g of ethyl acrylate, 50g of methyl styrene and 10g of methacrylic acid to make a mixed monomer. Set aside.

[0056] b) Dissolve 0.1 g of sodium dialkyl-2-sulfosuccinate, 0.4 g of sorbitan monolaurate (Span 20), and 0.5 g of sodium persulfate in 10 g of deionized water. spare.

[0057] c) Dissolve 4.0 g of diacetone acrylamide in 10 g of deionized water. spare.

[0058] d) Add 1g of sodium dodecyl naphthalenesulfonate, 1g of sorbitan monolaurate (Span 20), 2g of sodium persulfate and 50g of deionized water to the mixed monomers in the step of 100ga) to dissolve into an aqueous solution, Stir for 30 minutes. spare.

[0059] e) In an aqueous solution of 0.5g sodium dodecyl naphthalene sulfonate, 1.5g polyoxyethylene monooleate, 2g sodium persulfate and 199.3g deionized water, react at 95°C for 10 minutes, then add dropwise d ) step of the mixed solution for 1 hour. At...

Embodiment 3

[0062] A kind of synthesis of styrene-acrylic emulsion for coated paper surface coating:

[0063] a) Mix 10 g of methyl methacrylate, 34 g of 2-ethylhexyl acrylate, 48 g of methyl styrene and 8 g of methacrylic acid to prepare a mixed monomer. spare.

[0064] b) Dissolve 0.1 g of sodium sulfosuccinate, 0.2 g of polyoxypropylene stearate, and 0.3 g of ammonium persulfate in 10 g of deionized water. spare.

[0065] c) 1.5 g of diacetone acrylamide and 1.5 g of methacrylamide ethyl ethylene urea were dissolved in 10 g of deionized water. spare.

[0066] d) Add 0.2 g of potassium oleate, 0.8 g of diethylene glycol fatty acid ester, 1 g of ammonium persulfate and 50 g of deionized water to dissolve the mixed monomers in step 90 ga) into an aqueous solution, and stir for 30 minutes. spare.

[0067] e) Add the mixed monomers in the 10ga) step to the aqueous solution of 0.8g sodium lauryl sulfate, 0.2g sorbitan monooleate (Span 80), 1g ammonium persulfate and 82.4g deionized wate...

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Abstract

The invention provides a styrene-acrylate emulsion for surface coatings of coated paper, which is prepared in emulsion polymerization mode by mixing the following raw materials in part by weight: 100 parts of mixed monomers; 0.7 to 4.5 parts of emulsifying agent; 0.4 to 4.5 parts of initiating agent; 2 to 4 parts of accelerating agent; 2 to 8 parts of crosslinking monomers; 4 to 20 parts of aqueous alkali; and 90 to 290 parts of water. The mixed monomers comprise the following monomers in part by weight: 20 to 44 parts of (methyl) acrylic ester; 50 to 74 parts of (methyl) styrene; and 6 to 10 parts of (methyl) acrylic acid. The styrene-acrylate emulsion for the surface coatings of the coated paper of the invention is a high-performance and environmentally-friendly product which can be used for paper coatings. When applied to the surface coatings of the coated paper, the product can obviously increase the surface strength of the coated paper and improve glossiness of paper coatings.

Description

technical field [0001] The invention relates to a styrene-acrylic emulsion for top coating, which is applied to the top coating of coated paper. Background technique [0002] Emulsions are widely used in the bonding of paper coatings. In the application process, the performance requirements of emulsions are getting higher and higher. With the improvement and development of emulsion application technology, the emulsion is required to have good process applicability, among which the most important thing is the cohesiveness of styrene-acrylic emulsion. The application of emulsion in paper coating can obviously improve the surface strength of paper and improve the glossiness of paper. [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 after coating on the paper is poor, and the gloss of the paper aft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F257/02C08F2/26C08F2/30C09D151/06D21H19/20
Inventor 施晓旦王养臣尹东华
Owner SHANGHAI DONGSHENG NEW MATERIALS
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