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, poor toughness, and low heat resistance, which affect its scope of application.

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
Comparison scheme
Effect test

Embodiment 1

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

[0039] (1) Add 80g of deionized water, 3g of dodecylbenzenesulfonic acid (DBSA), 2g of alkylphenol polyoxyethylene ether into a four-neck flask equipped with a stirrer, thermometer, condenser tube and nitrogen gas inlet tube (NP-9), 8g octamethylcyclotetrasiloxane, blow nitrogen, react at 70°C for 9h, then add 2.5g γ-methacryloyloxypropyltrimethoxysilane (KH-570), in React at 75 for 9 hours to obtain a silicone emulsion with long side chains, cool to room temperature, then add the obtained emulsion dropwise to ethanol whose volume is 2 to 4 times its volume, break the emulsion by ultrasonic vibration, and pour off the supernatant to obtain long side chains of silicone.

[0040] (2) Add 3g of methacrylic acid, 3.0g of isooctyl methacrylate, 5.0g of trifluoroethyl methacrylate, and 4.5g of a reaction vessel equipped with a stirrer, a thermometer, a condenser tube, ...

Embodiment 2

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

[0047] (1) Add 110g of deionized water, 4g of dodecylbenzenesulfonic acid (DBSA), 2g of polyoxyethylene alkyl ether, 25.4 g octamethylcyclotetrasiloxane, feed nitrogen, react at 75°C for 7h, then add 4.5g allyltrimethoxysilane, react at 80°C for 7h to obtain a silicone emulsion with long side chains, take it out and air-cool to room temperature, and then drop the obtained emulsion into ethanol whose volume is 2 to 4 times its volume, ultrasonically oscillate to break the emulsion, and pour off the supernatant to obtain long side chain silicone.

[0048](2) Add 10.4g methyl methacrylate, 5g acrylic acid, 15.0g trifluoroethyl methacrylate, 20.5g step (1) The obtained long side chain organosilicon, 79g methyl ethyl ketone, 1.6g azobisisobutyrocyanide, nitrogen gas, reacted at 63°C for 5h, then air-cooled and discharged, to obtain long side chain organosilicon modifi...

Embodiment 3

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

[0055] (1) Add 130g of deionized water, 5g of cetylbenzenesulfonic acid, 3g of polyoxyethylene sorbitan oleate, 30.4 g octamethylcyclotetrasiloxane, feed nitrogen, react at 80°C for 5h, then add 5.3g allyltriethoxysilane, react at 85°C for 5h, obtain a silicone emulsion with long side chains, take it out and air-cool to room temperature, and then drop the obtained emulsion into ethanol whose volume is 2 to 4 times its volume, ultrasonically oscillate to break the emulsion, and pour off the supernatant to obtain organosilicon with long side chains.

[0056] (2) Add 7g of acrylic acid, 26.6g of ethyl acrylate, 15.0g of hexafluorobutyl methacrylate, and 30.5g of Silicone with long side chains, 92g methyl ethyl ketone, 2.4g azobisisobutylcyanide, nitrogen gas, react at 68°C for 4 hours, and then air-cool the material to obtain long side chain silicone-modified fluori...

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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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