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Styrene-butadiene emulsion and preparation method thereof

A styrene-butadiene emulsion and dispersion technology, which is applied in papermaking, coating, pigmented coating, etc., can solve the problems of bond strength and water resistance to be improved, and achieve the effect of improving the bond and water resistance

Inactive Publication Date: 2019-02-01
JINING MING SHENG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Chinese patent CN105294947A discloses a preparation method of high-performance styrene-butadiene latex for papermaking. The prepared emulsion is applied to paper coating, and the smoothness and ink absorption are improved, but the bond strength and water resistance still need to be improved

Method used

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  • Styrene-butadiene emulsion and preparation method thereof
  • Styrene-butadiene emulsion and preparation method thereof
  • Styrene-butadiene emulsion and preparation method thereof

Examples

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Effect test

Embodiment 1

[0039] 1. Preparation of styrene-butadiene emulsion base material:

[0040] The 2000ml pressurized reaction kettle is first evacuated, and the vacuum degree is -0.095MPa. 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, 10 g of butadiene, 100 g of styrene, 0.2 g of n-dodecyl mercaptan, and 0.5 g of n-butyl titanate were added dropwise at 60°C; and 0.4 g of dodecyl A mixed aqueous solution of sodium sulfate, 0.2 g of polyoxyethylene (20) sorbitan monooleate (Tween 80), 0.4 g of potassium persulfate, and 21.93 g of distilled water. The dropwise addition time was 6 hours. After the dropwise addition was completed, the temperature was kept at 60° C. for 4 hours. Cool to 25° C., and neutralize with 5 grams of 20 wt % sodium hydroxide aqueous solution. Filter through a 100-mesh sieve to obtain a styrene-butadiene em...

Embodiment 2

[0046] 1. Preparation of styrene-butadiene emulsion base material:

[0047] The 2000ml pressurized reaction kettle is first evacuated, and the vacuum degree is -0.095MPa. Add 2 grams of sodium dodecyl naphthalene sulfonate, 1 gram of sorbitan monooleate (Span 80), 1 gram of sodium persulfate, 500 1 g of distilled water and 5 g of styrene were completely dissolved into an aqueous solution, and the stirring was started, and the temperature was raised to 90°C. At the same time, 5 grams of methacrylic acid, 50 grams of n-butyl acrylate, 50 grams of methyl methacrylate, 200 grams of butadiene, 95 grams of methyl styrene, and 2 grams of tert-dodecyl mercaptan were added dropwise at 90°C. 2 grams of n-butyl titanate, a mixed monomer of 3 grams of isopropyl trioleate acyloxy titanate; and 3 grams of sodium dodecyl naphthalene sulfonate, 1 gram of sorbitan monolaurate ( Span 20), 4 grams of sodium persulfate, a mixed aqueous solution of 111 grams of distilled water. The dropwise addi...

Embodiment 3

[0053] 1. Preparation of styrene-butadiene emulsion base material:

[0054] The 2000ml pressurized reaction kettle is first evacuated, and the vacuum degree is -0.095MPa. Add 0.5 grams of sodium lauryl sulfate, 0.5 grams of ammonium persulfate, 150 grams of distilled water, and 2 grams of styrene to completely dissolve into an aqueous solution. Start stirring and heat up to 80°C. At the same time, 3 grams of methacrylic acid, 100 grams of butadiene, 98 grams of styrene, 1 gram of n-dodecanethiol, and 0.5 grams of isopropyl tris(dioctyl pyrophosphate acyloxy)titanium were added dropwise at 80°C. ester, 2 grams of bis(dioctyloxypyrophosphate) ethylene titanate mixed monomer; and 2 grams of sodium dialkyl-2-sulfosuccinate, 1.5 grams of polyoxypropylene stearate , 2 grams of ammonium persulfate, a mixed aqueous solution of 59 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 2 hour...

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Abstract

The invention discloses a styrene-butadiene emulsion and a preparation method thereof. In parts by weight, the styrene-butadiene emulsion is prepared by performing mixing on 100 parts of a styrene-butadiene emulsion base and 5-10 parts of a kaolin dispersion solution. The styrene-butadiene emulsion base is prepared by the following steps: performing free-radical emulsion polymerization on an aqueous solution of a mixture of carboxylic acid monomers, (methyl) acrylate monomers, butadiene, (methyl) styrene monomers, titanates, a molecular weight regulator, an anionic emulsifier, a non-ionic emulsifier and an initiator; carrying out reaction at 60-90 DEG C for 3-10 hours; adjusting the pH value of the reaction product to 6-9 by using alkaline substances; and then, carrying out filtration so as to obtain the styrene-butadiene emulsion base. The kaolin dispersion solution is a dispersion prepared by performing grinding-dispersing on kaolin, an aqueous solution of sodium polyacrylate and water. The styrene-butadiene emulsion prepared by the preparation method is a high-performance environmentally-friendly product which is capable of meeting usage requirements of paper-making coatings. Being used in paper-making coatings, the styrene-butadiene emulsion is capable of significantly improving adhesive bonding performance of coating layers as well as enhancing water resistance of paper.

Description

technical field [0001] The invention relates to the field of binders for papermaking coatings, in particular to a styrene-butadiene emulsion and a preparation method thereof. Background technique [0002] Styrene-butadiene emulsion 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 which, the most important thing is the cohesiveness of the styrene-butadiene emulsion. [0003] Chinese patent CN105294947A discloses a preparation method of high-performance styrene-butadiene latex for papermaking. The prepared emulsion is applied to paper coating, and the smoothness and ink absorption are improved, but the bond strength and water resistance still need to be improved. Contents of the invention [0004] The purpose of the present invent...

Claims

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Application Information

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IPC IPC(8): D21H19/58D21H19/40D21H19/64D21H19/46C08F212/08C08F236/10C08F220/06C08F2/26C08F2/30C08F212/12C08F220/18C08F220/14C08F222/02C08F230/04
CPCC08F2/26C08F2/30C08F212/08C08F212/12C08F236/10D21H19/40D21H19/46D21H19/58D21H19/64C08F220/06C08F222/02C08F220/18C08F230/04C08F220/1804C08F220/14
Inventor 施晓旦尹东华
Owner JINING MING SHENG NEW MATERIALS CO LTD
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