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Preparation method and application of neutral emulsion

An emulsion and neutral technology, applied in applications, household utensils, inks, etc., can solve the problems of easy volatilization of ammonia gas and high pH value of the emulsion, and achieve the effect of preventing the agglomeration of the emulsion and the color paste and ensuring the stability

Active Publication Date: 2019-04-26
GUANGDONG YINGKE GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At room temperature, both rosin-modified resin and synthetic acrylic resin are solid compounds. To convert them into water-soluble liquids, they must react with amine compounds to form soluble amine salts. The most commonly used method is emulsification polymerization to form emulsions, but the existing Most of the emulsion is alkaline, the pH value is high, and the ammonia gas in the emulsion is easy to volatilize

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of preparation method of neutral emulsion, comprises the steps:

[0044] (a1), mix 67.4 parts of water, 1.2 parts of emulsifier A and 5 parts of cationic starch by weight, then heat up to 80 ° C, keep the temperature for 15 minutes, then add 5.2 parts of cationic initiator-water solution, stir for 18 minutes and then add 0.3 parts of emulsifier A, 1.1 parts of molecular weight regulator and 20.1 parts of mixed monomer A, then keep warm at 85°C for 45min, then cool down to 45°C, add ammonia water with a concentration of 20%wt until the solution is transparent and the pH value is 6.8-7.2, the temperature After cooling down to 25°C, filter to obtain a protective colloid;

[0045] (b1), mix 17.4 parts of water and 46 parts of protective colloid prepared in step (a1) by weight, then heat up to 85°C, then add 0.53 parts of cationic initiator-water solution, stir for 18 minutes and add 15.8 parts of mixed monomers at the same time B and 7.8 parts of mixed monomer C, th...

Embodiment 2

[0066] A kind of preparation method of neutral emulsion, comprises the steps:

[0067] (a1), mix 65 parts of water, 1 part of emulsifier A and 5 parts of cationic starch by weight, then heat up to 75 ° C, keep the temperature for 10 minutes, then add 4 parts of cationic initiator-water solution, stir for 15 minutes and then add 0.2 parts of emulsifier A, 0.8 parts of molecular weight regulator and 18 parts of mixed monomer A, then keep warm at 80°C for 40min, then cool down to 40°C, add ammonia water with a concentration of 20%wt until the solution is transparent and the pH value is 6.8-7.2, the temperature After cooling down to 20°C, filter to obtain a protective colloid;

[0068] (b1), mix 10 parts of water and 40 parts of protective colloid prepared in step (a1) by weight, then heat up to 75°C, then add 0.4 parts of cationic initiator-water solution, stir for 15 minutes and then add 10 parts of mixed monomers at the same time B and 5 parts of mixed monomer C, then add 0.5 ...

Embodiment 3

[0089] A kind of preparation method of neutral emulsion, comprises the steps:

[0090] (a1), mix 80 parts of water, 1.5 parts of emulsifier A and 10 parts of cationic starch by weight, then heat up to 88 ° C, keep the temperature for 20 minutes, then add 7 parts of cationic initiator-water solution, stir for 20 minutes and then add 0.07 parts of emulsifier A, 1.5 parts of molecular weight modifier and 25 parts of mixed monomer A, then keep warm at 90°C for 50min, then cool down to 50°C, add ammonia water with a concentration of 20%wt until the solution is transparent and the pH value is 6.8-7.2, the temperature After cooling down to 30°C, filter to obtain a protective colloid;

[0091] (b1), mix 20 parts of water and 50 parts of protective colloid prepared in step (a1) by weight, then heat up to 88°C, then add 0.7 parts of cationic initiator-water solution, stir for 20 minutes and then add 20 parts of mixed monomers at the same time B and 10 parts of mixed monomer C, then add 1...

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Abstract

The invention relates to the technical field of water-based ink, in particular to preparation method of neutral emulsion. The preparation method of the neutral emulsion comprises the steps that a protective colloid is prepared by using water in specific parts by weight, an emulgator A, cationic starch, a cationic initiator-water solution, a molecular weight regulator, a mixed monomer A and ammoniawater by adopting a specific method; and then, the neutral emulsion is prepared by using the water in specific parts by weight, the protective colloid prepared in the step (a1), the cationic initiator-water solution, a mixed monomer B, a mixed monomer C and an emulgator B by adopting the specific method, and the stability of the emulsion can be further kept without adding the ammonia water to adjust to alkalinity. A pH value of the neutral emulsion is between 6.8 and 7.3, the stability is high, compared with existing alkaline emulsion, the volatilization amount of ammonia gas of the neutral emulsion is lower, the odour is lower, the damage to bodies of operating personnel is lower, the potential safety hazards are reduced, the corrosivity to equipment and a printer to prepare water-basedoil paint is less, and the printing process is more stable after the neutral emulsion is applied to prepare the water-based oil paint.

Description

technical field [0001] The invention relates to the technical field of water-based ink, in particular to a preparation method and application of a neutral emulsion. Background technique [0002] One of the drying methods of water-based ink is the volatilization of amine compounds, which include ammonia, monoethanolamine, triethanolamine, etc. The main volatile component of amines is ammonia gas. When it volatilizes into the air, it will produce a strong ammonia smell. If the pH value is high, it will also produce a choking smell, which pollutes the environment and wastes resources. Printing operators Also suffered from it. [0003] The main raw materials that affect the pH value of water-based inks are water-soluble compounds, and the water-soluble compounds are mainly rosin-modified resins and synthetic acrylic resins. At room temperature, both rosin-modified resin and synthetic acrylic resin are solid compounds. To convert them into water-soluble liquids, they must react...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/06C08F212/08C08F220/14C08F220/18C08F2/38C09D11/107
CPCC08F2/38C08F251/00C09D11/107C08F220/06
Inventor 刘润林金伟师连坤鹏姚征
Owner GUANGDONG YINGKE GRP CO LTD
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