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Fluosilicic modification water-soluble acrylic resin dispersion and application thereof

A water-soluble acrylic acid, fluoro-silicon modification technology, applied in the direction of coating, etc., can solve the problems of weakening the use value of fluoro-silicon monomer, water resistance, etc., to achieve good appearance and dispersion stability, hardness improvement, water dilution Good results

Active Publication Date: 2011-07-27
JIANGSU BLUESTAR GREEN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above emulsion polymerization is carried out in the presence of emulsifiers. After film formation, most of the emulsifiers still remain in the film, and with the hydrophilic groups, the water resistance of the latex film is affected to varying degrees. Influence, weakening the use value of fluorosilicone monomer

Method used

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  • Fluosilicic modification water-soluble acrylic resin dispersion and application thereof
  • Fluosilicic modification water-soluble acrylic resin dispersion and application thereof

Examples

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preparation example Construction

[0038]The preparation of the dispersion adopts the method of free radical solution polymerization. First, the temperature of the low-carbon alcohol is raised to slowly reflux, and then 10-20% by mass of the monomer, the initiator, and the molecular weight regulator are uniformly mixed and added to it, and the heat preservation is carried out. Half an hour later, add the remaining mixed monomers, initiators, and molecular weight regulators evenly in about 4 hours to obtain a water-soluble acrylic resin, and then add an organic amine neutralizer for neutralization. The degree of neutralization is 50-100%, preferably 100%, and the neutralization temperature is 30-100°C. Appropriate heating is beneficial to the dissolution of the polymer in the solvent, and the neutralization time is shortened. It is further preferably 50-70°C. Phase inversion and disperse in deionized water after salt formation to form a resin dispersion; the acid value of the dispersion is 20-100 mgKOH / g in terms...

Embodiment 1

[0046] Example 1: 11.60g methyl methacrylate, 11.00g butyl acrylate, 9.00g n-butyl methacrylate, 6.00g acrylate-2-ethylhexyl, 9.00g acrylate-2-hydroxypropyl, 21.00 g of trifluoroethyl methacrylate, 1.50 g of silicone monomer (A-172), 6.00 g of methacrylic acid, 1.50 g of azobisisobutyronitrile, and 0.40 g of mercaptoethanol were mixed and stirred to dissolve evenly. In addition, 21.00 g of a mixed solvent of absolute ethanol and n-butanol mixed in a ratio of 2:1 was added to a four-necked flask equipped with a stirrer, a condenser, a thermometer, and a dropping funnel, and heated in a water bath until the solvent was refluxed stably. Take 20% of the mixed monomer solution and put it into a four-necked flask, keep it warm at 82° C. for 0.5 hour, and then add the remaining monomer mixed solution uniformly dropwise at constant temperature for 3 hours. After 1 hour of heat preservation, add 0.15g of azobisisobutyronitrile (dissolved in 1g of n-butanol), continue heat preservation ...

Embodiment 2

[0049] Example 2: 9.00g methyl methacrylate, 11.00g butyl acrylate, 5.00g tertiary vinyl carbonate (VV-10), 6.00g acrylonitrile, 6.00g n-butyl methacrylate, 6.00g acrylic acid-2 -Ethylhexyl ester, 9.00g-2-hydroxypropyl acrylate, 15.00g trifluoroethyl methacrylate, 1.50g silicone monomer (A-172), 7.50g methacrylic acid, 1.60g azobisiso Butyronitrile and 0.40 g of mercaptoethanol were mixed and stirred to dissolve evenly. In addition, 22.00 g of a mixed solvent of isopropanol and n-butanol mixed in a ratio of 2:1 was added to a four-neck flask equipped with a stirring paddle, a condenser, a thermometer, and a dropping funnel, and heated in a water bath until the solvent was refluxed stably. Take 20% of the mixed monomer solution and put it into a four-necked flask, keep it warm at 90° C. for 0.5 hour, and then add the remaining monomer mixed solution uniformly dropwise at constant temperature for 3 hours. After 1 hour of heat preservation, add 0.16g of azobisisobutyronitrile (d...

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Abstract

The invention provides a fluosilicic modification water-soluble acrylic resin dispersion and an application thereof. The dispersion is prepared from 20-50% of non-functional (methyl) acrylic ester, 5-35% of fluorinated acrylic ester monomer, 5-15% of carboxyl group-containing alkene monomer, less than or equal to 15% of vinyl monomer, 2-20% of (methyl) hydroxyl acrylate, 1-5% of organic silicon modified monomer, 15-30% of low carbon alcohol, 0.5-4% of inhibitor and 0.1-1.8% of molecular regulator according to a radical solution polymerization method. Based on solid parts, the acidic value of the dispersion is 20-100 mg KOH / g; the glass-transition temperature is 5-40 DEG C; the dispersion has a good appearance and dispersion stability as well as good water diluent property; a film obtained by cross-linking and curing a polycarbodiimide cross-linking agent and the dispersion has excellent water tolerance, solvent tolerance, high temperature tolerance, smooth property, stain tolerance and humidity resistance; the adhesion and hardness are improved; and the dispersion has strong practicable value and can be used for substrates such as wooden wares, metals, plastics and the like.

Description

technical field [0001] The invention relates to a fluorine-silicon modified water-soluble acrylic resin dispersion and a coating obtained by crosslinking and curing, belonging to the technical field of chemical raw material applications. Background technique [0002] The development and application of water-soluble acrylic resin coatings began in the 1950s and developed rapidly in the early 1970s. Compared with traditional solvent-based acrylic resin coatings, water-soluble acrylic resin coatings have the advantages of safe use, low price, saving resources and energy, reducing environmental pollution and public nuisance, and have become the main development direction of the current coatings industry. However, water-soluble acrylate resin coatings generally have disadvantages such as poor water resistance, hot stickiness and brittleness, which limit their application in some occasions, so their modification has become the research focus of relevant workers. [0003] At prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/22C08F220/14C08F220/18C08F220/28C08F230/08C08F220/06C08F218/04C08F220/44C08F2/06C08J3/03C09D133/16C09D133/12C09D7/12
Inventor 闫福安黄贵张伟华
Owner JIANGSU BLUESTAR GREEN TECH
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