Microgel and method for preparing same, and water-soluble paint composition

A water-soluble paint and microgel technology, applied in the field of microgel and its preparation, can solve the problems of slow drying time, effect pigment flow, mottling, etc., and achieve the effect of improving interaction, viscosity and pseudoplasticity

Active Publication Date: 2014-02-05
KCC CORP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the water-soluble coating composition is different from the solvent-based coating composition. Its hair-raising ingredients are mostly composed of water, and the drying time of the solvent-based hair-raising ingredients is slow.
Serious phenomenon of effect pigment flow, mottling, etc.

Method used

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  • Microgel and method for preparing same, and water-soluble paint composition
  • Microgel and method for preparing same, and water-soluble paint composition
  • Microgel and method for preparing same, and water-soluble paint composition

Examples

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preparation example Construction

[0022] The preparation method of the microgel in the present invention comprises: the step of preparing a core; the step of forming a first shell on the core; and the step of forming a second shell on the first shell. At this time, the acid-containing unsaturated monomer reacts with the unsaturated monomer having a polyalkylene glycol and containing a hydroxyl group to form a second shell.

[0023] First, according to Example 1 of the present invention, the preparation method of the microgel is described in detail.

[0024] In the step of preparing the core, the acid-free or acid-containing unsaturated monomer, polymerization initiator, emulsifier and ion water are added to the seed crystal to react to form the core. In the step of forming the first shell, an acid-free or acid-containing unsaturated monomer, a hydroxyl-free or hydroxyl-containing unsaturated monomer, a polymerization initiator, an emulsifier and ionized water are added to react to form the first shell. In the...

preparation example 1

[0090] 140 g of DIW as ionized water, 1 g of CO-436 as an emulsifier, and monomer 1 in Table 1 as a monomer were charged into a 5-liter 4-neck flask equipped with a thermometer, and the temperature was raised to 80°C. Nitrogen was injected for 5 minutes while maintaining the temperature at 80° C., and nitrogen was removed after making the reaction part a nitrogen atmosphere. 3 g of APS as a polymerization initiator was melted in 10 g of DIW, injected into the reactor, and aged for 30 minutes to form seed crystals.

[0091] A preemulsion prepared by mixing monomer 2 of Table 1 and 2.5 g of CO-436 in 100 g of DIW and a polymerization initiator solution obtained by melting 0.5 g of APS in 50 g of DIW were simultaneously dropped for one hour, This was held for one hour to form the core.

[0092] A preemulsion prepared by mixing monomer 3 in Table 1 and 2.5 g of CO-436 in 100 g of DIW and a polymerization initiator solution obtained by melting 0.5 g of APS in 50 g of DIW were simu...

preparation example 2

[0096] 140 g of DIW, 0.5 g of CO-436, and monomer 1 in Table 1 as monomers were charged into a 5-liter four-necked flask equipped with a thermometer, and the temperature was raised to 80°C. Nitrogen was injected for 5 minutes while maintaining the temperature at 80° C., and nitrogen was removed after making the reaction part a nitrogen atmosphere.

[0097] Here, a pre-emulsion with an acid value of 32.6 prepared by mixing monomer 3-1 in Table 1 and 1.25 g of CO-436 in 100 g of DIW was polymerized by melting 0.5 g of APS in 50 g of DIW. The initiator solution was dripped at the same time for one hour, and then maintained for one hour to form the core.

[0098] Here, an aqueous solution obtained by dissolving 20 g of DMEA in 40 g of DIW was added dropwise for neutralization, and after maintaining it for 10 minutes, mixed monomer 2 in Table 1 and 2.5 g of CO-436 in 100 g of DIW. The prepared preemulsion and the polymerization initiator solution obtained by melting 0.5 g of APS i...

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Abstract

According to the present invention, a method for preparing a microgel comprises: a step of preparing a core; a step of forming a first shell on the core; and a step of forming a second shell on the first shell. The step of forming the first shell and/or the step of forming the second shell uses unsaturated monomers containing hydroxyl radicals and comprising polyalkylene glycols.

Description

technical field [0001] The present invention relates to microgel, its preparation method, and water-soluble coating composition. Background technique [0002] At present, in order to protect the environment, the regulation on the growth of organic compounds is strengthened, so the development of water-soluble paint is also actively carried out. Effect pigments, such as aluminum or mica, are added to automotive coating compositions to impart an attractive finish to the exterior of the vehicle. Using similar effect pigments to paint the surface, with the effects of absorbing, reflecting, and refracting light, it can bring different color sensations at different angles. This effect is called a metallic effect. [0003] However, the water-soluble coating composition is different from the solvent-based coating composition, and its hair-increasing components are mostly composed of water, and the drying time is slower than that of the solvent-type hair-increasing components. As ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075B01J13/02C08K9/10C09D7/12
CPCC09D133/02B01J13/14C08J3/126C08J2333/06B01J13/22B01J13/0065C09D133/10C08J3/075C09D5/02C08F220/06C08F220/18C08F220/14C08F220/1804C08F212/08C08F220/1808C08F220/1802C08F222/102C08F220/20C08F220/286C08J2205/024
Inventor 文泰权李钟泽李贤淑朴钟允高建赫
Owner KCC CORP CO LTD
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