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Multi-crosslinked core/shell structured polyacrylate emulsion ink and preparation method thereof

A technology of polyacrylate emulsion and multiple cross-linking, which is applied in the direction of ink, household utensils, applications, etc., can solve the problems of non-occurrence of multiple cross-linking reactions and unsatisfactory problems, achieve enhanced coating adhesion and solvent resistance, and improve Ethanol resistance and stability improvement effect

Active Publication Date: 2019-07-16
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this patent, the monodisperse nano-silica prepared by the sol-gel method is firstly modified by organosilicon oxide silane, and then the emulsion polymerization method is used to prepare the modified nano-silica as the core and polyacrylate as the shell. core-shell structure nano-silica / polyacrylate emulsion; the organosilicon oxide silane used in this patent is mainly used for the surface modification of nano-silica. Using a variety of cross-linking monomers, the emulsion coating film polymer does not undergo multiple cross-linking reactions, which cannot meet the needs of obtaining a coating film that can withstand 70% ethanol aqueous solution for more than 60 times under low-temperature rapid curing conditions

Method used

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  • Multi-crosslinked core/shell structured polyacrylate emulsion ink and preparation method thereof
  • Multi-crosslinked core/shell structured polyacrylate emulsion ink and preparation method thereof
  • Multi-crosslinked core/shell structured polyacrylate emulsion ink and preparation method thereof

Examples

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Effect test

Embodiment 1

[0045] The preparation of multiple crosslinking core / shell structure type polyacrylate emulsion comprises the steps:

[0046] (a) At room temperature, in parts by mass, 10 parts of water, 0.5 parts of sodium lauryl sulfate, 0.5 parts of alkylphenol polyoxyethylene ether, 0.1 part of N-methylol acrylamide, 1.2 parts of glycidyl methacrylate, 3.4 parts of acrylic acid, 4.4 parts of methyl methacrylate, and 1.3 parts of butyl acrylate were stirred at a stirring speed of 450 r / min for 60 min to obtain nuclear pre-emulsion A.

[0047] At room temperature, in parts by mass, 18 parts of water, 1 part of sodium lauryl sulfate, 1 part of alkylphenol polyoxyethylene ether, 11.1 parts of methyl methacrylate, 9.6 parts of butyl acrylate Esters, after stirring for 30min at a stirring speed of 630r / min, a pre-emulsion was obtained. Take out the pre-emulsion of 60% of its mass, add 2.8 parts of vinyltriisopropoxysilane, and stir for 30min to obtain a shell pre-emulsion. C, add 0.4 parts of ...

Embodiment 2

[0053] The preparation of multiple crosslinking core / shell structure type polyacrylate emulsion comprises the steps:

[0054] (a) At room temperature, in parts by mass, 7 parts of water, 0.1 parts of DOWFAX 2A1, 0.4 parts of alkylphenol polyoxyethylene ether, 1.6 parts of trimethylolpropane trimethacrylate, 1.3 parts Ethylene glycol dimethacrylate, 2.1 parts of glycidyl methacrylate, 1.5 parts of methacrylic acid, 9 parts of methyl methacrylate, 1.4 parts of ethyl acrylate, add to the container, at 400r / min Stirring for 30 minutes at a certain stirring speed, the core layer pre-emulsion A was obtained.

[0055] At room temperature, in parts by mass, add 20 parts of water, 0.2 parts of DOWFAX 2A1, 0.5 parts of alkylphenol polyoxyethylene ether, 11.12 parts of methyl methacrylate, and 12.88 parts of ethyl acrylate into the container , at a stirring speed of 700r / min, after stirring for 40min, a pre-emulsion was obtained, and 10% of the mass of the pre-emulsion was taken out and...

Embodiment 3

[0061] The preparation of multiple crosslinking core / shell structure type polyacrylate emulsion comprises the steps:

[0062] (a) At room temperature, in parts by mass, 10 parts of water, 0.1 part of monoglyceride laurate, 0.2 part of sodium dodecylbenzenesulfonate, 0.54 part of N-butoxyacrylamide, 0.46 parts of ethylene glycol dimethacrylate, 5.43 parts of n-butyl methacrylate, 5 parts of methyl methacrylate, and 3 parts of ethyl acrylate are added to the container at a stirring speed of 400r / min , and stirred for 30 minutes to obtain the core layer pre-emulsion A.

[0063] At room temperature, in parts by mass, 25 parts of water, 0.2 parts of monoglyceride laurate, 0.4 parts of sodium dodecylbenzenesulfonate, 10 parts of n-butyl methacrylate, 8.4 parts of methyl Methyl acrylate, 7.6 parts of butyl acrylate are added to the container, and after stirring for 40 minutes at a stirring speed of 700r / min, a pre-emulsion is obtained, and 30% of its mass of the pre-emulsion is take...

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Abstract

The invention discloses a multi-crosslinked core / shell structure polyacrylate emulsion ink and a preparation method thereof. In terms of the following mass percentages, the raw material composition of the ink is: multiple cross-linked core / shell structure polyacrylate emulsion 20-44%, water 10-30%, ethanol 15-45%, film-forming aid 0.09-4.5%, emulsifying Agent 1.2-3%, pigment 0.3-3%, cross-linking agent 0.12-2%. The invention adopts a semi-continuous seed emulsion polymerization method to introduce various cross-linking monomers such as organosiloxane into the core / shell structure polyacrylate emulsion. The ink prepared by the invention can be used on printing and wrapping paper, the wiping resistance of 70% ethanol aqueous solution reaches more than 60 times, and the adhesion of the coating film reaches 0 grade. The alcohol resistance, stability and adhesion of the emulsion of the present invention are greatly improved, and the solvent of the emulsion is water, which reduces the volatilization of VOC and the pollution to the environment, and can be widely used in the packaging paper printing industry.

Description

technical field [0001] The invention relates to a water-based ink for printing and wrapping paper, in particular to a multi-crosslinked core / shell structure polyacrylate emulsion ink whose coating film can withstand more than 60 times of wiping with 70% ethanol aqueous solution. Background technique [0002] With the improvement of people's living standards, the printing and packaging industry has developed rapidly, and the performance requirements for packaging printing inks are getting higher and higher, and ethanol-resistant inks are also in great demand. Acrylate emulsion is widely used in the preparation of printing and packaging inks because of its simple preparation process, low raw material price, and good film-forming properties and mechanical properties. However, pure polyacrylate molecules are mainly linear structures, so synthetic The emulsion has poor performance in terms of solvent resistance, adhesion, hardness, etc. [0003] At present, most of the polyacryl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F265/06C08F220/14C08F220/18C08F230/08C08F220/06C08F220/32C08F220/58C08F222/14C08F2/26C08F2/30C09D11/107
CPCC09D11/107C08F2/26C08F2/30C08F265/06C08F220/18C08F220/1802C08F220/1804
Inventor 文秀芳肖静丽高干皮丕辉徐守萍程江李琼
Owner SOUTH CHINA UNIV OF TECH
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