Anti-after tack acrylic latex for water-based ink

A technology of water-based ink and pure acrylic emulsion, which is applied in the direction of ink, application, household appliances, etc. It can solve the problems of affecting the color development and soaping resistance of water-based ink, compatibility affecting the stability of emulsion polymerization, and high production equipment requirements. , achieve excellent yellowing resistance, easy operation, and improve alcohol resistance

Active Publication Date: 2013-02-06
NANJING REGAL POLYMER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alkali-soluble resins are the most representative polymers of this type. However, most domestic and foreign chemical companies use organic solvents and adopt continuous polymerization, high-temperature and high-pressure solution polymerization processes, which have high requirements for production equipment and require subsequent polymer separation. Solvent recovery, processing and granulation, etc.
Complicated procedures and harsh conditions are the disadvantages in the preparation of alkali-soluble resins
[0004] In addition, this alkali-soluble resin still needs an appropriate amount of small molecule emulsifier to be used for emulsion polymerization, and the water resistance and leveling of the emulsion are inhibited, which will affect key properties such as color development and soaping resistance of water-based inks; At the same time, the compatibility of the emulsifier of the emulsion and the resin will affect the stability of the emulsion polymerization
In summary, there are still many problems and defects in the preparation technology and emulsion performance of the current water-based acrylate emulsion.

Method used

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  • Anti-after tack acrylic latex for water-based ink
  • Anti-after tack acrylic latex for water-based ink
  • Anti-after tack acrylic latex for water-based ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Preparation of alkali-soluble resin: Add 750g of water, 12g of sodium lauryl sulfate, 10g of sodium lauryl polyoxyethylene ether sulfate, and 5g of sodium persulfate into the reaction kettle under mechanical stirring at a temperature of 60°C, and stir evenly Afterwards, add methacrylic acid 30g, methyl methacrylate 125g, n-butyl acrylate 20g, ethyl acrylate 20g and 5g 3-mercaptopropionic acid and 3g 3-mercaptopropionic acid butyl ester to carry out radical polymerization, reaction temperature is at 20 Rise to 85°C within 1 minute, and control the temperature in this range for 60 minutes, then lower the temperature to 60°C, add 20g of ammonia water, and discharge to obtain a self-made alkali-soluble resin solution.

[0043] Then, the self-made alkali-soluble resin solution of 500g is mixed with 450g methyl methacrylate, 100g butyl acrylate and 10g hydroxyethyl methacrylate under high-speed stirring to make a pre-emulsion;

[0044] Then add the remaining 500g homemade alk...

Embodiment 2

[0047]Preparation of alkali-soluble resin: Add 700g of water, 10g of sodium lauryl sulfate, 3g of sodium lauryl polyoxyethylene ether sulfate, fatty alcohol polyoxyethylene ether amber Disodium sulfonic acid 5g, ammonium persulfate 8g, after stirring evenly, add 42g of methacrylic acid, 124g of methyl methacrylate, 20g of n-butyl acrylate, 50g of ethyl acrylate and 5g of 3-mercaptopropionic acid for radical polymerization , the reaction temperature rises to 81°C within 30 minutes, and the temperature is controlled within this range for 60 minutes, then the temperature is lowered to 70°C, 33g of ammonia water is added, and the self-made alkali-soluble resin solution is obtained by discharging.

[0048] Then, under high-speed stirring, 700g of homemade alkali-soluble resin solution and 350g of methyl methacrylate, 100g of ethyl acrylate, 50g of butyl methacrylate and 10g of diethylaminoethyl methacrylate were mixed evenly to make a pre-emulsion ;

[0049] Then add the remaining...

Embodiment 3

[0052] Preparation of alkali-soluble resin: 711 g of water, 10 g of sodium lauryl sulfate, 10 g of disodium salt of fatty alcohol polyoxyethylene ether succinate sulfonate, and 3 g of sodium persulfate were added to the reaction kettle under mechanical stirring at a temperature of 50 ° C. After stirring evenly, add 42g of methacrylic acid, 134g of methyl methacrylate, 55g of ethyl acrylate and 5g of 3-mercaptopropionic acid to carry out free radical polymerization. The reaction temperature rises to 85°C within 20 minutes, and the temperature is controlled within 60°C. Minutes, then lower the temperature to 60°C, add 30g of ammonia water, and discharge to obtain a self-made alkali-soluble resin solution.

[0053] Then, under high-speed stirring, the self-made alkali-soluble resin solution of 500g and 400g methyl methacrylate, 100g butyl acrylate and 20g vinyltriethoxysilane were mixed uniformly to make a pre-emulsion;

[0054] Then add the remaining 500g homemade alkali-soluble...

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Abstract

The invention discloses anti-after tack acrylic latex for water-based ink. The latex comprises 5-18% of water, 0.1-0.8% of initiator, 40-60% of self-made alkali-soluble resin solution, 4-20% of C4-C12 alkyl acrylate monomer, 15-40% of C4-C20 methacrylate monomer and 0.2-5% of functional monomer. In a preparation method of the latex, firstly (methyl) acrylic acid, methyl methacrylate and C4-C12 alkyl acrylate are used as comonomers, persulfate is used as the initiator, a chain transfer agent is adopted, and then the alkali-soluble resin solution is obtained through emulsion polymerization; and then, the C4-C12 alkyl acrylate unsaturated monomer, the C4-C20 methacrylate unsaturated monomer and the functional monomer are used as comonomers, the alkali-soluble resin serves as a protective colloid, and then the anti-after tack acrylic latex is prepared by soap-free emulsion polymerization. According to the invention, the technology is simple, the operation is convenient, and the energy consumption and cost of production are reduced; and the latex has excellent yellowing resistance and color paste stability, and can effectively improve the alcohol resistance, soaping resistance, color development property and anti-after tack property of the water-based ink.

Description

technical field [0001] The invention relates to a water-based resin and a preparation method thereof, in particular to an anti-sticking pure acrylic emulsion for water-based ink. Background technique [0002] With the improvement of environmental protection requirements, environmental protection water-based inks have received widespread attention in recent years, and water-based resins, as an important component of water-based inks, have also become domestic research hotspots. Acrylate emulsion has become the current research direction of water-based resins because of its good hardness, gloss, pollution resistance, weather resistance, reduced energy consumption, and reduced environmental pollution. [0003] In the traditional emulsion polymerization using small molecule emulsifiers as emulsification system, emulsifiers will affect the surface properties and water resistance of the emulsion. agent. Alkali-soluble resins are the most representative polymers of this type. How...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/10C08F220/14C08F220/18C08F220/28C08F220/34C08F230/08C08F2/24C09D11/00C09D11/107
Inventor 傅乐峰余洁黄达
Owner NANJING REGAL POLYMER
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