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Organosilicone prepolymer and organosilicone-acrylic resin prepared therefrom

A technology of acrylic resin and organosilicon, which is applied in the direction of silicon organic compounds, etc., can solve the problems of difficult to reflect the hydrophobicity of organosilicon materials, restrict movement, enrichment, etc., and achieve convenient production, good adhesion, and simple process Effect

Inactive Publication Date: 2018-10-16
CHANGZHOU INST OF CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the two ends or the middle of the silicone chain segment are bonded and fixed, its movement is restricted and it cannot be enriched on the surface, so it is difficult to reflect the hydrophobic properties of the silicone material well.

Method used

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  • Organosilicone prepolymer and organosilicone-acrylic resin prepared therefrom
  • Organosilicone prepolymer and organosilicone-acrylic resin prepared therefrom
  • Organosilicone prepolymer and organosilicone-acrylic resin prepared therefrom

Examples

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preparation example Construction

[0060] 1. Preparation of silicone prepolymer

[0061] S100: Mix 100ml of toluene and 150ml of water into a 500ml flask, then take 80g of trimethylchlorosilane and 20g of methyldichlorosilane into the dropping funnel, keep the temperature below 25°C, stir, and add the mixture dropwise body. After the dropwise addition, pour the toluene aqueous solution into a separatory funnel, let stand, separate layers, remove the water layer, and then wash with water three times. Then add 30g of concentrated sulfuric acid, catalytic reforming at 35°C for 6 hours, then pour the mixture into a separatory funnel, let stand, separate layers, and remove the acidic water layer. Add about 0.5% mass fraction of activated carbon, stir, heat, after 30 minutes, let stand, separate layers, and remove the activated carbon. Neutralize with water and wash it until the solution is neutral, and then carry out vacuum distillation with an oil pump to collect colorless organosilicon prepolymer I.

[0062] fr...

Embodiment 1

[0067] Add water, SDS / OP-10 / Span20 and some n=3 organosilicon prepolymers and methyl methacrylate into a 250ml four-neck flask equipped with a thermometer, stirring device, dropping funnel and condenser. Stir and pre-emulsify at temperature (50°C) for 30 minutes. Then the temperature was raised to 80°C, and at the same time, the prepared initiator solution and the remaining mixed monomers were added dropwise. After the dropwise addition, keep the temperature for 3 hours, lower the temperature to 55° C., adjust the pH to 7 with ammonia water, and cool and discharge.

Embodiment 2

[0069] Add water, SDS / OP-10 / Span20 and some n=7 organosilicon prepolymers and methyl methacrylate into a 250ml four-neck flask equipped with a thermometer, a stirring device, a dropping funnel and a condenser. Stir and pre-emulsify at ℃ for 30min. Then the temperature was raised to 80°C, and at the same time, the prepared initiator solution and the remaining mixed monomers were added dropwise. After the dropwise addition, keep the temperature for 3 hours, lower the temperature to 55° C., adjust the pH to 7 with ammonia water, and cool and discharge.

[0070] After the reaction product was purified by distillation under reduced pressure, its structure was identified by infrared spectrum IR, and the desired result was the same as image 3 Consistent with that shown. from image 3 We can see that: 2960.4cm-1 is -CH 3 The upper C-H stretching vibration, 2903.6cm-1 is the C-H stretching vibration of -CH2-, 1258.2cm-1 is the bending vibration of Si-(CH3), 799.4cm-1 is the bendin...

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Abstract

The invention discloses organosilicone prepolymer. A structural formula of the organosilicone prepolymer is shown as follows, wherein R1: CH3, C2H5 and C6H5, R2: CH3, C2H5, C6H5, and n=0, 1, 2, 3, 4,5. The invention further discloses organosilicone-acrylic resin prepared therefrom and a preparation method and application thereof.

Description

technical field [0001] The invention relates to a silicone polymer, in particular to a silicone prepolymer and a silicone-acrylic resin prepared by using the silicone prepolymer. Background technique [0002] Silicone monomers and their polymers have low surface tension, low glass transition temperature, good water resistance, temperature resistance, weather resistance and other properties. These superior properties have laid the foundation for their application in polymer material science. However, its further application is limited due to its high cost, poor adhesion and film-forming properties. Acrylic resin has the advantages of superior (ozone) oxygen resistance, oil resistance, adhesion, and many monomers, easy synthesis and low price, but the performance of acrylic resin such as temperature resistance, water resistance, surface tension and permeability poor. By copolymerizing silicone and acrylic resin, two materials with great difference in performance and strong c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/12C08F220/14C08F220/18C08G77/38C08G77/06C08G77/08C07F7/08
CPCC08F283/124C08G77/06C08G77/08C08G77/38C08F220/1804
Inventor 陈华林刘白玲王红丹彭丽君
Owner CHANGZHOU INST OF CHEM
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