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Organic silicon / hydroxyl phosphate composite modified water emulsion acrylic resin and preparation method and application thereof

A technology of acrylic resin and hydroxyphosphate, which is applied in coatings, anti-corrosion coatings, etc., can solve problems such as VOC emissions, achieve zero VOC emissions, excellent anti-corrosion performance, and improve cross-linking density and corrosion resistance.

Active Publication Date: 2010-07-14
广东优贝精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although part of the water is used as the dispersion medium, generally 20% to 30% of the hydrophilic solvent is introduced during the polymerization process. At the same time, a certain amount of co-solvent is also added during the let-down process. Therefore, it cannot fundamentally Achieve zero VOC emissions

Method used

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  • Organic silicon / hydroxyl phosphate composite modified water emulsion acrylic resin and preparation method and application thereof
  • Organic silicon / hydroxyl phosphate composite modified water emulsion acrylic resin and preparation method and application thereof
  • Organic silicon / hydroxyl phosphate composite modified water emulsion acrylic resin and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041]First dissolve 0.25g initiator with 8.0g deionized water to obtain initiator solution; then add 30.0g deionized water, 0.25g pH regulator and 0.5g composite emulsifier into the reaction vessel, stir at high speed for 20 minutes, then add 1.2g of methyl methacrylate and 1.3g of butyl acrylate, stirred at high speed to emulsify and disperse, heated up to 70-90°C, added an appropriate amount of initiator solution, and kept warm for 15 minutes after the reaction system showed obvious blue light, and the composite emulsion core layer was obtained .

[0042] Put 12.0g of deionized water and 1.25g of composite emulsifier into the reaction vessel, and after stirring at high speed for 20 minutes, mix a mixture of 22.2g of butyl acrylate, 0.3g of methacrylic acid, 5.0g of hydroxypropyl acrylate, and 18.0g of styrene Add the monomer into the reaction vessel, emulsify and disperse at a high speed to prepare a mixed monomer pre-emulsion; then drop the mixed monomer pre-emulsion and t...

Embodiment 2～7

[0044] The operation steps and reaction conditions are the same as in Example 1, and the distribution ratio of each component is shown in Table 1. The properties of the obtained organosilicon / hydroxyphosphate composite modified water-emulsion acrylic resin are shown in Table 2.

[0045] Table 2

[0046] performance

Embodiment 8

[0048] Water-based metal baking paint: disperse 100 parts of dispersant and 10 parts of defoamer in 550 parts of water, then add 260 parts of iron red, 140 parts of talcum powder, 140 parts of barium sulfate, 20 parts of zinc oxide, and 20 parts of fumed silica , 370 parts of aluminum tripolyphosphate, 50 parts of zinc phosphate, in a disperser at 2500rpm, disperse evenly at a high speed, then transfer to a sand mill for grinding for 3 hours, until the fineness is less than 30μm, discharge, and then take out 15 parts of For red paste, add 30 parts of water-emulsion acrylic resin prepared in Example 1, 4 parts of aldehyde methyl etherified amino resin, 0.05 part of wetting agent, and 1 part of adhesive agent under high-speed stirring, and stir thoroughly, and finally add an appropriate amount of organic amine Neutralizer and deionized water adjust the pH and viscosity of the system. The properties of the paint are shown in Table 3.

[0049] The resins prepared in the above-men...

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Abstract

The invention discloses organic silicon / hydroxyl phosphate composite modified water emulsion acrylic resin and a preparation method and application thereof; hydroxy-phosphate and organic siloxane which are synthesized are co-polymerized into modified acrylic resin, wherein the weight percentage of the solid resin is 45 to 55 percent, and the balance is deionized water; the components which form the acrylic resin and the consumption thereof are as follows: 35 to 60 percent of acrylate monomer, 30 to 40 percent of vinyl aromatic monomer, 3 to 10 percent of organic silicon monomer, 5 to 10 percent of hydroxy ester monomer, 1.5 to 4.0 percent of composite emulsifier, 0.5 to 1.0 percent of pH value regulator, and the initiator is 0.5 to 1.5 percent of the consumption of the acrylate monomer; after the resin is prepared into single-component anti-corrosive coating, the anti-corrosive performance of the collating is better than that of the single-component anti-corrosive coating prepared by the traditional water dispersible acrylic resin; and simultaneously, the invention improves the defect that the water dispersible acrylic resin needs to be polymerized through a solution method, facilitates the realization of zero VOC emission, and achieves the purposes of environmental protection and energy saving.

Description

technical field [0001] The invention relates to a synthesized organosilicon / hydroxy phosphate composite modified water-emulsion type acrylic resin and its preparation method and application, which is especially suitable for preparing water-based metal baking varnish and has excellent corrosion resistance. Background technique [0002] In recent years, with the increasingly stringent restrictions on the content of volatile organic compounds (VOC) in coatings in environmental protection laws and regulations around the world, the coatings industry is developing in the direction of low pollution and energy saving. Water-based coatings use water as the dispersion medium, are non-toxic and non-flammable, which is not only beneficial to environmental protection, but also reduces production costs. At present, most of the hydroxyacrylic resins used in domestic metal baking varnishes are water-dispersed acrylic resins, which are polymerized by hydrophilic solvent solutions. When used,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/06C08F220/28C08F212/08C08F230/08C08F230/02C08F2/30C08F2/26C09D133/08C09D5/08
Inventor 余倩余林许奕祥孙明郝志峰
Owner 广东优贝精细化工有限公司
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