Organosilicone modified fluorine-containing (methyl) acrylic resin with long side chain

A technology of acrylic resin and silicone, applied in the direction of coating, etc., can solve the problems of affecting the scope of application, stain resistance, water resistance, toughness, and heat resistance, etc., to improve water resistance, good water resistance, Effect of improved stain resistance

Active Publication Date: 2013-10-23
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it also has shortcomings such as stain resistance, water resistance,

Method used

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  • Organosilicone modified fluorine-containing (methyl) acrylic resin with long side chain
  • Organosilicone modified fluorine-containing (methyl) acrylic resin with long side chain
  • Organosilicone modified fluorine-containing (methyl) acrylic resin with long side chain

Examples

Experimental program
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Example Embodiment

[0038] Example 1: Preparation of fluorine-containing (meth)acrylic resin with long side chain silicone modified

[0039] (1) Add 80g deionized water, 3g dodecylbenzene sulfonic acid (DBSA), 2g alkylphenol polyoxyethylene ether into a four-necked flask equipped with a stirrer, thermometer, condenser and nitrogen inlet pipe (NP-9), 8g octamethylcyclotetrasiloxane, blow in nitrogen, react at 70℃ for 9h, then add 2.5g γ-methacryloxypropyltrimethoxysilane (KH-570), 75 react for 9h to obtain a long side chain silicone emulsion, cool to room temperature, then add the obtained emulsion dropwise to 2 to 4 times the volume of ethanol, ultrasonically shake the emulsion, discard the supernatant liquid to obtain long side chain Silicone.

[0040] (2) Add 3g methacrylic acid, 3.0g isooctyl methacrylate, 5.0g trifluoroethyl methacrylate, 4.5g step into a reaction vessel equipped with a stirrer, thermometer, condenser and nitrogen inlet pipe (1) The obtained long side chain organosilicon, 18g me...

Example Embodiment

[0046] Example 2: Preparation of silicone-modified fluorine-containing (meth)acrylic resin with long side chains

[0047] (1) In a four-necked flask equipped with a stirrer, thermometer, condenser and nitrogen inlet pipe, add 110g deionized water, 4g dodecylbenzene sulfonic acid (DBSA), 2g polyoxyethylene alkyl ether, 25.4 g octamethylcyclotetrasiloxane, bubbling in nitrogen, reacting at 75°C for 7h, then adding 4.5g allyltrimethoxysilane, reacting at 80°C for 7h to obtain a long side chain silicone emulsion, take it out for air cooling After reaching room temperature, the obtained emulsion is added dropwise to ethanol whose volume is 2 to 4 times, and the emulsion is broken by ultrasonic vibration, and the supernatant liquid is discarded to obtain long side chain organosilicon.

[0048] (2) Add 10.4g methyl methacrylate, 5g acrylic acid, 15.0g trifluoroethyl methacrylate, 20.5g in a reaction vessel equipped with a stirrer, thermometer, condenser and nitrogen inlet pipe. Step (1) ...

Example Embodiment

[0054] Example 3: Preparation of fluorine-containing (meth)acrylic resin with long side chain silicone modified

[0055] (1) In a four-necked flask equipped with a stirrer, thermometer, condenser and nitrogen inlet pipe, add 130g deionized water, 5g cetylbenzene sulfonic acid, 3g polyoxyethylene sorbitan oleate, 30.4 g octamethylcyclotetrasiloxane, bubbling in nitrogen, reacting at 80°C for 5h, then adding 5.3g allyltriethoxysilane, reacting at 85°C for 5h to obtain a long side chain silicone emulsion, take it out for air cooling After reaching room temperature, the obtained emulsion is added dropwise to ethanol whose volume is 2 to 4 times, and the emulsion is broken by ultrasonic vibration, and the supernatant liquid is discarded to obtain long side chain organosilicon.

[0056] (2) Add 7g acrylic acid, 26.6g ethyl acrylate, 15.0g hexafluorobutyl methacrylate, 30.5g obtained in step (1) into a reaction vessel equipped with a stirrer, thermometer, condenser and nitrogen inlet pipe...

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Abstract

The invention belongs to the technical field of acrylic resin modification and discloses an organosilicone modified fluorine-containing (methyl) acrylic resin with a long side chain. The invention further discloses a preparation method. The preparation method comprises the following steps: mixing water, an anionic emulsifier and a nonionic emulsifier with octamethylcyclotetrasiloxane, and reacting at 70-90 DEG C for 3-9h under nitrogen protection; adding siloxane containing unsaturated double bonds, and reacting at 75-90 DEG C for 3-9h; dropwise adding reaction liquid into ethanol of which the volume is 2-4 times as large as that of the reaction liquid, performing ultrasonic treatment, outwelling the supernatant to obtain organosilicone with a long side chain; and (2) mixing the organosilicone with a long side chain prepared in the step (1) with a (methyl) acrylic acid monomer, a (methyl) acrylate monomer, a fluorine-containing acrylate monomer, a non-reactive organic solvent and an initiator, and reacting at 60-75 DEG C for 2-6h under nitrogen protection to obtain the organosilicone modified fluorine-containing (methyl) acrylic resin with a long side chain, and the resin has better water resistance and stain resistance.

Description

technical field [0001] The invention belongs to the technical field of acrylic resin modification, and in particular relates to a long-side-chain organosilicon-modified fluorine-containing (meth)acrylic resin. Background technique [0002] Acrylic resin is a kind of thermoplastic with excellent performance. It has the characteristics of light color, high transparency, bright and plump, tough coating film, strong adhesion, and corrosion resistance. It is the main component of commonly used coating materials. Widely used in decoration, decoration, plastic alloy, packaging and other fields. However, it also has disadvantages such as poor stain resistance, water resistance, toughness, and low heat resistance, which affect its scope of application. [0003] Polysiloxane has good water resistance, weather resistance, and good flexibility. Therefore, silicone can be used to modify acrylic resin, by introducing a certain amount of silicone functional groups on the main chain and s...

Claims

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Application Information

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IPC IPC(8): C08F220/22C08F220/18C08F220/14C08F220/06C08F230/08C08F283/12C08F2/26C08F2/30C09D133/16C09D151/08
Inventor 刘伟区苏奎
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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