Hydroxyl acrylic acid emulsion with microgel nuclear structure and preparation process and application thereof

A technology of hydroxyacrylic acid and core structure, applied in the field of hydroxyacrylic acid emulsion, can solve the problems of easy falling off of emulsifier, low product solid content, reduced binding force, etc., and achieve the effects of excellent mechanical properties, less dosage and low production cost

Inactive Publication Date: 2005-06-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the increase of the degree of crosslinking, the structure of the latex particles becomes more compact, and the binding force between the emulsifier molecules and the latex particles decreases, so that the emulsifier on the surface of the latex particles is easy to fall off under the action of thermal movement or mechanical force, so that When the latex particles collide with each other, due to the instant desorption of the emulsifier, the latex particles are more likely to coalesce. Both of these reasons lead to a decrease in stability during the synthesis process and a low solid content of the product.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2

[0079] The monomer composition is methyl methacrylate, butyl acrylate, methacrylic acid, hydroxyethyl methacrylate, vinyl organosiloxane, triethylene glycol dimethacrylate, and its component formula is shown in Table 1:

[0080] Table 1 Composition of hydroxyacrylic emulsion with microgel core structure

Embodiment 2

[0082] I Bottom

[0083] Deionized water 50g 124g

[0084] CO436 2.05g 5.83g

[0085] NP-9 0.40g 1.13g

[0086] II monomer mixture

[0087] Methyl methacrylate 2.8g 2.8g

[0088] Butyl acrylate 3.2g 3.2g

[0089] γ-methacryloyloxy

[0090] Propyltrimethoxysilane 1.2g 1.2g

[0091] III Initiator Solution

[0092] Potassium persulfate 0.04g 0.14g

[0093] Deionized water 5g 5g

[0094] IV drop mixture

[0095] Deionized water 36g -

[0096] CO43 0.77g -

[0097] NP-9 0.14g -

[0098] Methyl methacrylate 15g 15g

[0099] Butyl acrylate 11.7g 11.7g

[0100] Methacrylic acid 1.8g 1.8g

[0101] γ-methacryloyloxy

[0102] Propyltrimethoxysilane 0.8g 0.8g

[0103] Triethylene glycol dimethacrylate 0.3g 0.3g

[0104] V drops the mixture

[0105] Deionized water 38g -

[0106] CO436 3.01g -

[0107] NP-9 0.5gg -

[0108] Methyl methacrylate 35g 35g

[0109] Butyl acrylate 27.1g 27.1g

[0110] Hydroxyethyl methacrylate 12.2g 12.2g

[0111] Mercaptoethanol 0.35g 0.3...

Embodiment 3

[0124] The monomer composition is methyl methacrylate, butyl acrylate, methacrylic acid, hydroxyethyl methacrylate, vinyl silane coupling agent, triethylene glycol dimethacrylate, and its component formula is shown in Table 2:

[0125] Table 2 Composition of hydroxyacrylic emulsion with microgel core structure

[0126] Composition Example 3

[0127] I Bottom

[0128] Deionized water 124g

[0129] CO436 5.83g

[0130] NP-9 1.13g

[0131] II monomer mixture

[0132] Methyl methacrylate 2.8g

[0133] Butyl acrylate 2.2g

[0134] γ-methacryloxypropyl

[0135] Trimethoxysilane 1.2g

[0136] III Initiator solution

[0137] Potassium persulfate 0.04g

[0138] Deionized water 5g

[0139] IV Add the mixture dropwise

[0140] Methyl methacrylate 15g

[0141] Butyl acrylate 11.7g

[0142] Methacrylic acid 1.8g

[0143] γ-methacryloxypropyl

[0144] Trimethoxysilane 0.8g

[0145] Triethylene glycol dimethacrylate 0.3g

[0146] AIBN 0.1g

[0147] V drop the mixture

[0...

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Abstract

A hydroxyacrylic acid emulsion with micro gel core structure is prepared through copolymerization of vinylsilane coupling agent on acrylate monomer to obtain hydrophobic micro gel cores, copolymerization of hydroxyvinyl monomer on acrylate monomer on the surface of said core to become hydrophilic shell, and preparing emulsion. A process for preparing water-soluble dual-component polyurethane used for paint is also disclosed.

Description

technical field [0001] The invention relates to a preparation method of a hydroxyacrylic acid emulsion with a microgel core structure. [0002] The invention also relates to the hydroxyacrylic acid emulsion with microgel core structure prepared by the method. [0003] The present invention also relates to a method for preparing a two-component water-based polyurethane with high cross-linking density, which is especially suitable for coatings, leather finishing agents, fabric treatment, adhesives, and the like, using the hydroxyacrylic acid emulsion with a microgel core structure. Background technique [0004] Microgels are intramolecularly cross-linked polymer microspheres whose molecular structure is between branched macromolecules and macroscopic network polymers. A microgel particle is a macromolecule, and the macromolecular chain is limited to a certain area for intramolecular cross-linking to form a network structure. The microgel is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F20/26C08G18/62C08K5/54
Inventor 涂伟萍周新华胡剑青
Owner SOUTH CHINA UNIV OF TECH
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