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Ultraviolet curing long-alkyl-side-chain-containing acrylate electrophoretic paint, a preparing method thereof and applications of the paint

An acrylate and electrophoretic coating technology, applied in electrophoretic coatings, anti-corrosion coatings, coatings, etc., can solve problems such as poor water resistance, and achieve high gloss, excellent water and alkali resistance, and smooth appearance.

Active Publication Date: 2018-03-02
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a UV-curable acrylate electrophoretic coating containing long alkyl side chains and its preparation method and application in view of the significant deficiency of poor water resistance of existing UV-curable acrylate electrophoretic coatings

Method used

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  • Ultraviolet curing long-alkyl-side-chain-containing acrylate electrophoretic paint, a preparing method thereof and applications of the paint
  • Ultraviolet curing long-alkyl-side-chain-containing acrylate electrophoretic paint, a preparing method thereof and applications of the paint
  • Ultraviolet curing long-alkyl-side-chain-containing acrylate electrophoretic paint, a preparing method thereof and applications of the paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of UV-curable waterborne acrylate cathodic electrophoretic coatings containing octadecyl side chains.

[0032] Step 1: Preparation of cationic water-based acrylate photosensitive resin containing octadecyl side chains:

[0033] Under mechanical stirring, 0.81g octadecyl acrylate (accounting for 1% of the total weight of acrylate photosensitive resin) and 9.0g dimethylaminoethyl methacrylate were mixed with 16.2g methyl methacrylate, A mixture of 16.1 g of acrylate-3-hydroxypropyl ester, 21.6 g of isooctyl methacrylate, and 1.84 g of initiator azobisisobutyronitrile (AIBN, 3% of the total weight of acrylate comonomers) was slowly added to the tank. In a reactor with 29.1g of propylene glycol methyl ether acetate, a free radical solution polymerization method was used to react at 120°C for 4 hours until the carbon-carbon double bonds in the reaction system were completely reacted to obtain an acrylate resin solution containing hydroxyl functional groups Then,...

Embodiment 2

[0039] Preparation of UV-curable waterborne acrylate anodic electrophoretic coating containing dodecyl side chains.

[0040] Step 1: Preparation of anionic waterborne acrylate photosensitive resin containing dodecyl side chains:

[0041] Under mechanical stirring, 10.5g lauryl methacrylate (accounting for 10% of the total weight of acrylate photosensitive resin) and 12.1g acrylic acid, 10.0g methyl methacrylate, 5.2g methacrylic acid were mixed with a constant pressure dropping funnel. The mixture of isobornyl ester, 17.0g acrylate-2-hydroxyl ethyl ester, 22.4g n-butyl acrylate, 3.1g initiator azobisisobutyronitrile (AIBN, accounting for 4% of the total weight of acrylate comonomer) was slowly dropped Put into the reactor that 35.6g propylene glycol methyl ether acetate is housed, adopt radical solution polymerization method, react at 70 ℃ for 12 hours, until the carbon-carbon double bond reaction in the reaction system is complete, make the acrylate containing hydroxyl functi...

Embodiment 3

[0047] Preparation of UV-curable waterborne acrylate cathodic electrophoretic coatings containing hexadecyl side chains.

[0048] Step 1: Preparation of cationic water-based acrylate photosensitive resin containing hexadecyl side chains:

[0049] Under mechanical stirring, 3.8g hexadecyl acrylate (accounting for 4% of the total weight of acrylate photosensitive resin) and 9.1g dimethylaminoethyl acrylate, 15.0g methyl methacrylate, 2.5g The mixture of styrene, 19.1g of 2-hydroxyethyl methacrylate, 25.5g of isooctyl acrylate, 3.75g of initiator azobisisobutyronitrile (AIBN, 5% of the total weight of acrylate comonomers) slowly Drop into a reactor containing 32.0g of propylene glycol methyl ether acetate, and react at 90°C for 6 hours by free radical solution polymerization until the carbon-carbon double bonds in the reaction system are completely reacted to obtain hydroxyl functional group-containing acrylic acid Ester resin solution; Then, the temperature of the system is adj...

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Abstract

The invention relates to ultraviolet curing long-alkyl-side-chain-containing acrylate electrophoretic paint, a preparing method thereof and applications of the paint. The waterborne acrylate electrophoretic paint comprises hydrophobic long alkyl side chains. The hydrophobic long alkyl side chains are provided by a long-chain alkyl (meth)acrylate monomer. The paint prepared by the method is particularly suitable for thermally sensitive matrixes having low requirements on curing temperature. Paint film formed by ultraviolet radiation curing contains hydrophobic long alkyl side chain units, and has good surface waterproof, corrosion resistant and decoration functions. The paint can be applied in the fields of surface waterproofing, corrosion preventing and decoration of metal workpieces, suchas hardware, bicycles and automobiles.

Description

technical field [0001] The invention relates to the field of preparation of acrylate electrophoretic coatings, in particular to an ultraviolet light curing acrylate electrophoretic coating containing long alkyl side chains, a preparation method and application thereof. Background technique [0002] Acrylate (cathode or anode) electrophoretic coatings are widely used on the surface of hardware, bicycles, automobiles, etc. Waterproof anti-corrosion and decorative fields. However, the electrophoretic paint film of traditional acrylate (cathode or anode) electrophoretic coatings is cured by heating, and its curing temperature is usually higher than 120°C, which severely limits its application in heat-sensitive substrates. UV curing is widely used in the fields of coatings, adhesives and inks due to its high efficiency, energy saving, economy and environmental protection. The combination of UV curing technology and electrophoretic coating technology can significantly reduce the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/20C08F220/34C08F220/06C08F212/08C08F8/30C09D5/44C09D5/08C09D133/10C09D133/08
CPCC08F8/30C08F220/18C09D5/08C09D5/4411C08F220/1808C08F220/1804C08F220/14C08F220/20C08F220/34C08F220/1818C08F212/08C08F220/06C08F220/1812
Inventor 刘芳何经纬殷妹
Owner SOUTH CHINA UNIV OF TECH
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