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Method for preparing acrylic resin emulsion and paper coating emulsion

A technology of acrylic resin and emulsion coating, which is applied in the field of materials and can solve problems such as poor product forming, cracks in printing ink, and easy fracture of materials

Inactive Publication Date: 2013-01-09
CHANGDE JINDE NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, vacuum aluminized printed products have poor wear resistance, low gloss, easy breakage of materials, and easy whitening of crease lines, etc., which will lead to problems such as poor product forming, poor material stiffness, and fine cracks in printing inks.

Method used

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  • Method for preparing acrylic resin emulsion and paper coating emulsion
  • Method for preparing acrylic resin emulsion and paper coating emulsion
  • Method for preparing acrylic resin emulsion and paper coating emulsion

Examples

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preparation example Construction

[0022] The invention provides a method for preparing an acrylic resin emulsion, comprising the following steps: 28-30 parts by weight of butyl acrylate, 22.8-24.6 parts by weight of methacrylate, 5.4-7.2 parts by weight of acrylic acid, 0.6-2 Ammonium persulfate in parts by weight, a mixture of 1.5-2.1 parts by weight of polyoxyethylene octylphenyl ether and sodium lauryl sulfate, 0.4-0.8 parts by weight of sodium bicarbonate, and 95-105 parts by weight of deionized water Mixing, adding a pH adjuster, reacting, and aging to obtain an acrylic resin emulsion.

[0023] Wherein, the butyl acrylate, methyl methacrylate and acrylic acid constitute the monomer components in the formula. Butyl acrylate is a soft monomer with a lower glass transition temperature of -55°C, which endows the resin with certain flexibility and extensibility; methyl methacrylate is a hard monomer with a higher glass transition temperature of 105°C. In order to improve the hardness and tensile strength of t...

Embodiment 1

[0039] 1.1 In an open environment, add 30 parts by weight of butyl acrylate, 21 parts by weight of methyl methacrylate, 7 parts by weight of acrylic acid, 1 part by weight of ammonium persulfate, 0.6 parts by weight of polyoxyethylene octyl Phenyl ether, 1.2 parts by weight of sodium lauryl sulfate, 0.6 parts by weight of NaHCO 3 , 100 parts by weight of deionized water, mixed and stirred, and then added ammonia solution containing 10% NaOH to adjust the pH value of the system to 6~7, mechanically stirred at 300r / min, reacted at a constant temperature of 80°C in a water bath for 4h, and matured at 85°C for 1h. An acrylic resin emulsion was obtained.

[0040] 1.2 Compound the acrylic resin emulsion obtained in 1.1 with toluene diisocyanate at a mass ratio of 5:15 to obtain a paper coating emulsion.

[0041] Dilute the acrylic resin emulsion obtained in 1.1 10 times with deionized water with a conductivity of 22.5 μS / cm and tap water with a conductivity of 385 μS / cm, freeze at ...

Embodiment 2

[0048] 2.1 In an open environment, add 30 parts by weight of butyl acrylate, 22.8 parts by weight of methyl methacrylate, 7.2 parts by weight of acrylic acid, 1 part by weight of ammonium persulfate, 0.6 parts by weight of polyoxyethylene octyl Phenyl ether, 1.2 parts by weight of sodium lauryl sulfate, 0.6 parts by weight of NaHCO 3 , 100 parts by weight of deionized water, mixed and stirred, and then added ammonia solution containing 6% NaOH to adjust the pH value of the system to 6~7, mechanically stirred at 300r / min, reacted at a constant temperature of 80°C in a water bath for 4h, and matured at 85°C for 1h. An acrylic resin emulsion was obtained.

[0049] 2.2 Compound the acrylic resin emulsion obtained in 2.1 with toluene diisocyanate at a mass ratio of 5:15 to obtain a paper coating emulsion.

[0050] Dilute the acrylic resin emulsion obtained in 2.1 10 times with deionized water with a conductivity of 22.5 μS / cm and tap water with a conductivity of 385 μS / cm, freeze ...

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Abstract

The invention provides a method for preparing an acrylic resin emulsion and a paper coating emulsion. The paper coating emulsion consists of the acrylic resin emulsion and an isocyanate curing agent. Compared with vacuum aluminizing liner paper in the prior art, the paper coating emulsion has the advantage that the isocyanate curing agent and the acrylic resin emulsion are subjected to chemical crosslinking reaction, so that a network structure is formed on the surface of paper. By the network structure formed by the paper coating emulsion, water vapor inside and outside the paper can be isolated from air, so that the vacuum aluminizing liner paper has the functions of keeping the drying and smell of cigarettes; metallic aluminum is not contained in the emulsion, so that resources are saved, and the emulsion can also be used for food-grade packaging materials; and a process for preparing the paper coating emulsion is convenient, the requirement on equipment is low, and an aluminum layer is not contained, so that a printing process is simple.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a preparation method of an acrylic resin emulsion and a paper coating emulsion. Background technique [0002] Cigarette lining paper is the paper that is packed between cigarette sticks and cigarette packs. Its main functions are to prevent moisture and maintain fragrance. At present, the most widely used cigarette lining paper in the domestic tobacco industry is composite lining paper. Its production process is simple. It is mainly processed and cut by aluminum foil, waste paper and composite adhesive through composite equipment. Corresponding post-processing such as embossing or printing. The composite lining paper used in cigarette packaging has strong plasticity and good packaging equipment stability, but the aluminum foil thickness of the composite lining paper is 7 μm, which is not easy to degrade and recycle, and has poor environmental protection performance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/20D21H19/14
Inventor 余赞白永平
Owner CHANGDE JINDE NEW MATERIAL TECH CO LTD
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