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High-smooth styrene-acrylic emulsion for coated paper surface coating and preparation method thereof

A technology of styrene-acrylic emulsion and coated paper, which is applied in the field of coatings, and can solve the problems of low-temperature film-forming properties, anti-sticking smoothness, etc.

Active Publication Date: 2019-11-15
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a high-smooth styrene-acrylic emulsion for coated paper surface coating and a preparation method thereof, which is applied to the primer coating of coated paper to overcome the low-temperature film-forming properties, anti-retack properties, and smoothness of polyacrylate emulsions. not good enough problem

Method used

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  • High-smooth styrene-acrylic emulsion for coated paper surface coating and preparation method thereof
  • High-smooth styrene-acrylic emulsion for coated paper surface coating and preparation method thereof
  • High-smooth styrene-acrylic emulsion for coated paper surface coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] 1) Synthesis of seed emulsion:

[0075] a) Mix 12 g of n-butyl acrylate and 85 g of styrene to obtain mixed monomer II.

[0076] b) 10g polyvinyl alcohol 0588 (Guangzhou Qisheng Chemical Co., Ltd.), 10g disodium dodecyl diphenyl ether disulfonate (Rhodia), 0.1g polypropylene glycol PPG-200 (Jiangsu Haian Petrochemical Co., Ltd. Plant), 0.5g of potassium persulfate and 180.9g of deionized water were mixed, kept at 90°C for 10 minutes, and the mixed monomer II in step a) was added.

[0077] c) heat preservation at 90° C. for 1 hour, cool down to 25° C., and filter through a 100-mesh sieve to obtain a seed emulsion.

[0078] 2) Synthesis of polystyrene:

[0079] a) Add 0.5g of azobisisobutyronitrile into 100g of isopropanol to fully dissolve and raise the temperature to 70-80°C.

[0080] b) slowly drop 50g of styrene into the solution in step a) for 2 hours at a constant speed, and control the temperature at 80°C

[0081] c) Keep warm at 70-90°C for 0.5 hours.

[0082...

Embodiment 2

[0086] 1) Synthesis of seed emulsion:

[0087] a) Mix 5 g of ethyl acrylate and 95 g of methyl styrene to obtain mixed monomer II.

[0088] b) 20g polyvinyl alcohol 1788 (Guangzhou Qisheng Chemical Co., Ltd.), 20g disodium dodecyl diphenyl ether disulfonate (Rhodia), 2g polypropylene glycol PPG-400 (Jiangsu Haian Petrochemical Plant) ), 2g of ammonium persulfate and 576g of deionized water were mixed, kept at 90°C for 30 minutes, and the mixed monomer II in step a) was added.

[0089] c) heat preservation at 90° C. for 3 hours, cool down to 25° C., and filter through a 100-mesh sieve to obtain a seed emulsion.

[0090] 2) Synthesis of polymethylstyrene:

[0091] a) Add 1 g of azobisisovaleronitrile into 120 g of isopropanol to fully dissolve and raise the temperature to 70-80°C.

[0092] b) Slowly add 50 g of methyl styrene to the solution in step a) dropwise at a constant speed for 1.5 hours, with the temperature controlled at 80°C

[0093] c) Incubate at 70-90°C for 1 ho...

Embodiment 3

[0098] 1) Synthesis of seed emulsion:

[0099] a) Mix 5 g of methyl methacrylate, 5 g of 2-ethylhexyl acrylate, and 90 g of methylstyrene to obtain mixed monomer II.

[0100] b) 15g polyvinyl alcohol 2488 (Guangzhou Qisheng Chemical Co., Ltd.), 15g disodium dodecyl diphenyl ether disulfonate (Rhodia), 1g polypropylene glycol PPG-600 (Jiangsu Haian Petrochemical Plant) ), 1g of sodium persulfate and 308g of deionized water were mixed, kept at 80°C for 20 minutes, and the mixed monomer II in step a) was added.

[0101] c) heat preservation at 80° C. for 2 hours, cool down to 25° C., and filter through a 100-mesh sieve to obtain a seed emulsion.

[0102] 2) Synthesis of polystyrene:

[0103] a) Add 1 g of azobicyclohexylcarbonitrile into 150 g of isopropanol to fully dissolve and raise the temperature to 75°C.

[0104] b) Slowly add 50g of methyl styrene dropwise to the solution in step a), dropwise at a constant speed for 1.5 hours, and control the temperature at 75°C

[010...

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Abstract

The invention discloses high-smoothness styrene-acrylic emulsion for the top coat of coated paper and a preparation method thereof. The high-smoothness styrene-acrylic emulsion is prepared from the following raw materials in parts by weight: 4-15 parts of seed emulsion, 100 parts of mixed monomer, 1-10 parts of (methyl) styrene oligomer, 1-4.5 parts of emulsifier, 0.4-4.5 parts of initiator, 0.2-2 parts of a buffering agent, 2-8 parts of a crosslinking monomer, 4-20 parts of aqueous alkali and 90-290 parts of water, by means of emulsion polymerization. The high-smoothness styrene-acrylic emulsion applied to under-coating paint has the characteristics of good stability, narrow particle size distribution, excellent water resistance and high viscosity, and can be used for solving the problems of insufficient low-temperature film-forming property, after-tack resistance and smoothness of polyacrylate resin in the prior art.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a high-smooth styrene-acrylic emulsion for coated paper surface coating and a preparation method thereof, which is applied to the primer coating of coated paper. Background technique [0002] With the rapid development of printing technology, people have higher and higher requirements for the quality of coated paper. Coated paper is used as high-grade material paper, and its exquisite appearance quality has become the pursuit goal of people. Because of its simple process and low cost, styrene-acrylic emulsion is widely used in the fields of paper coating binder and paper product coating, and the market demand is also increasing. [0003] Styrene-acrylic emulsion has advantages such as heat resistance, good weather resistance, and is often used in coating paper surface coating aspect, as: Chinese patent CN 101704930 A discloses a kind of coated paper surface coating coating with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F257/02C08F220/18C08F212/12C08F2/26C08F2/30D21H19/20
CPCC08F2/26C08F2/30C08F257/02D21H19/20C08F220/1804
Inventor 施晓旦刘召栋李继先
Owner SHANGHAI DONGSHENG NEW MATERIALS
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