Method for preparing microgel resin and UV-cured contamination resistant coating prepared from microgel resin

A microgel and resin technology, applied in the field of coatings, can solve the problems of anti-fingerprint printing, insufficient skin oil contamination ability, difficult to lasting anti-contamination, weak bonding and other problems, and achieves good anti-skin oil contamination performance, Adjustable compatibility and mild reaction conditions

Inactive Publication Date: 2012-02-22
湖南宏泰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of coating has good anti-ink, cosmetics, coffee and other stains, but not enough anti-fingerprints and skin oil stains
In addition, the silicone or fluorocarbon acrylate linear polymer added is generally a non-crosslinked resin, which is not firmly bonded to the coating film, and its stain resistance is difficult to last

Method used

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  • Method for preparing microgel resin and UV-cured contamination resistant coating prepared from microgel resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Add isobornyl acrylate (50g), n-butyl acrylate (40g), tripropylene glycol diacrylate (6.36g), S-n-dodecyl-S' to a 500mL ordinary glass reactor in sequence -(α,α'-dimethyl-α"-acetoxy) trithiocarbonate (1.77g), photoinitiator 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (0.34 g), toluene (150g), nitrogen exhaust 1h to this system.Cut off short-wave ultraviolet radiation with light-cutting glass, use long-wave ultraviolet-visible radiation as initiation source, polymerization process is protected with nitrogen, and the reaction times is 5 hours, single The overall conversion rate is greater than 95%. Then add (2-perfluorohexylethyl) acrylate (40.5g) and 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (0.68g), continue The photoinitiated polymerization is carried out, and the reaction time is 3 hours to prepare the microgel resin, and the conversion rate of the fluorine-containing monomer is greater than 98%.

[0032] (2) Take the above-mentioned microgel resin soluti...

Embodiment 2

[0038] (1) Add isobornyl acrylate (50g), n-butyl acrylate (40g), TMPTMA (4.60g), S, S'-bis(α,α'-dimethyl- α "-acetoxy) trithiocarbonate (2.09g), (1-hydroxycyclohexyl) benzophenone (0.25g), toluene (230g), blow nitrogen to the system and exhaust oxygen for 1h. Short-wave ultraviolet radiation is removed, and long-wave ultraviolet-visible radiation is used as a source of initiation, and the polymerization process is protected with nitrogen, and the reaction times is 4 hours. The total conversion rate of the monomer is greater than 95%. Then add acrylic acid (2-perfluorooctylethyl) ester ( 21g) and (1-hydroxycyclohexyl) benzophenone (0.15g), continue photoinitiated polymerization, and the reaction time is 3 hours to prepare microgel resin, and the conversion rate of fluorine-containing monomer is greater than 98%.

[0039] (2) Take the above-mentioned microgel resin solution (20g), acrylated polyacrylate (15g), hexafunctional urethane acrylate (10g), pentaerythritol triacrylate (...

Embodiment example 3

[0045] (1) Add isobornyl acrylate (90g), tripropylene glycol diacrylate (6.05g), S-n-dodecyl-S'-(α,α'-di Methyl-α″-acetoxy) trithiocarbonate (1.68g), photoinitiator 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (0.33g), n-heptane (75g ), isopropanol (75g), nitrogen exhaust 1h to this system. Cut off the short-wave ultraviolet radiation with cut-off glass, use the long-wave ultraviolet-visible radiation as the initiation source, the polymerization process is protected with nitrogen, and the reaction times is 5 hours. Single The total conversion ratio of the body is greater than 95%. Then add dodecafluoroheptyl acrylate (37.2g) and 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (0.34g), continue photoinitiated polymerization, The reaction time is 3 hours, the microgel resin is prepared, and the conversion rate of the fluorine-containing monomer is greater than 98%.

[0046] (2) Take the above-mentioned microgel resin solution (15g), acrylated polyacrylate (15g), hexafunctional...

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Abstract

The invention discloses a method for preparing microgel resin and a UV-cured contamination resistant coating prepared from the microgel resin. The method comprises the following steps of: initiating room temperature reversible addition fragmentation chain transfer (RAFT) radical polymerization on an iso-bornyl acryl monomer, alkyl methacrylate, a cross-linking agent, a chain transfer agent, a photo initiator and a solvent by using UV-visible light or visible light to synthesize branched polyacrylate; continuously adding fluorine(methyl)-containing acrylate monomers for RAFT block copolymerization to prepare microgel resin taking a fluorine-containing acrylate hydrophobic and oleophobic chain as a shell and the branched polyacrylate as a core; and preparing the UV-cured contamination resistant coating by mixing the microgel resin, other light-cured resin, monomers, the photo initiator and the like. The branched-block fluorine-containing acrylate microgel resin designed and synthesized can migrate to the surface in the process of leveling the coating, and can be cross-linked with matrix components in the UV curing process to form a permanent hydrophobic and oleophobic low-surface contamination resistant coating with a micro-nano structure, and the fingerprint resistance and skin grease contamination resistance of the coating are good.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a branched-block fluorine-containing polyacrylate UV-curable anti-fouling coating resin prepared by light-induced room temperature reversible addition-fragmentation chain transfer (RAFT) radical polymerization method and its Preparation. Background technique [0002] Due to the advantages of high efficiency, energy saving, environmental protection, and economy, as well as the excellent scratch resistance, chemical resistance, brightness, and fullness of the coating film, UV-curable coatings have been widely used in surface covers for consumer electronics such as mobile phones and notebook computers. Light. However, these products tend to leave fingerprints, cosmetics, skin oils, and even ink, coffee and other stains during use, and are not easy to remove. Due to the needs of aesthetics and hygiene, people are more and more interested in UV-curable anti-smudge / anti-fingerprint ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F293/00C08F2/48C09D175/14C09D153/00C09D133/04C09D5/16
Inventor 卢礼灿彭叶蔡远利吴年强陈朝岚
Owner 湖南宏泰新材料有限公司
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