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Preparation method for silicone-acrylic miniemulsion

A technology of mini-emulsion and silicone-acrylate, applied in the field of preparation of silicone-acrylate mini-emulsion, can solve the problems of high price, complicated process, restricting the content of organosilicon in silicone-acrylate mini-emulsion, etc., and achieve the effect of improving compatibility

Active Publication Date: 2015-08-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology involves combining different components together with chemically bonding them for better performance or lower costs compared to existing methods like adding other materials at once.

Problems solved by technology

This patents describes different ways to make modified polystyrene by modifying certain types of molecules called aminosilsulfonic acids. These modifications help reduce adhesive force when applied onto various surfaces like metal plates or glass windows. They also enhance durable films made up of these resin compositions. Additionally, there exist other techniques involving microphase separation processes, including evaporation/condensations, crosslinkage reactions, ion exchange interactions, and condensational exchanges. Overall, this technology allows for precise control over the structure and composition of modified polyanide particles during formation of thin layers.

Method used

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  • Preparation method for silicone-acrylic miniemulsion
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  • Preparation method for silicone-acrylic miniemulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Methyl methacrylate (MMA), butyl acrylate (BA), methyltrimethoxysilane (MTMS) and 3-(methacryloyloxy)propyltrimethoxysilane (MEMO) in moles The ratio of 2:1:0.92:0.08 and 2wt.% (the mass fractions are based on the total monomer mass, the same below) are added to the single-necked flask equipped with magnetic stirring together with hexadecane, and stirred for more than 1 hour to completely dissolve the stabilizer , become the oil phase mixture;

[0045] (2) Add 2.1 wt.% sodium dodecyl sulfate (SDS) and 1.4 wt.% OP-10 together with deionized water whose mass is 1.5 times the total mass of the monomers into a four-necked flask equipped with magnetic stirring , stirred for more than 1 hour to become an aqueous phase mixture;

[0046] (3) the oil phase mixture is gradually added dropwise to the water phase mixture, and the hydrolysis reaction of the organosilicon and the emulsification process of the overall mixture are simultaneously carried out at 30 ° C, and the hydr...

Embodiment 2

[0051] (1) Methyl methacrylate (MMA), butyl acrylate (BA), methyltrimethoxysilane (MTMS) and 3-(methacryloyloxy)propyltrimethoxysilane (MEMO) in moles Ratio 2:1:0.92:0.08 with 1 wt.% hexadecane and 1 wt.% methyl methacrylate-n-butyl acrylate-siloxane random copolymer (Mn=3000 g / mol, PDI=1.11, MMA: BA (mol)=2:1, 3-(methacryloyloxy) propyltrimethoxysilane content is 20mol%) is added to the single-necked flask equipped with magnetic stirring, and stirred for more than 1 hour, so that the stabilizer is completely Dissolved to become an oil phase mixture;

[0052] (2) Add 2.1 wt.% sodium dodecyl sulfate (SDS) and 1.4 wt.% OP-10 together with deionized water whose mass is 1.2 times the total mass of the monomers into a four-necked flask equipped with magnetic stirring , stirred for more than 1 hour to become an aqueous phase mixture;

[0053] (3) the oil phase mixture is gradually added dropwise to the water phase mixture, and the hydrolysis reaction of the organosilicon and the e...

Embodiment 3

[0058] (1) Methyl methacrylate (MMA), butyl acrylate (BA), methyltriethoxysilane (MTES) and 3-(methacryloyloxy)propyltrimethoxysilane (MEMO) according to Molar ratio 2:1:0.71:0.08 with 1 wt.% hexadecane and 1 wt.% methyl methacrylate-n-butyl acrylate-siloxane random copolymer (Mn=3000 g / mol, PDI=1.11, MMA : BA (mol) = 2: 1, 3-(methacryloyloxy) propyl trimethoxysilane content is 20mol%) is added to the single-necked flask equipped with magnetic stirring, and stirred for more than 1 hour to make the stabilizer Completely dissolved to become an oil phase mixture;

[0059] (2) Add 2.1 wt.% sodium dodecyl sulfate (SDS) and 1.4 wt.% OP-10 together with deionized water whose mass is 1.2 times the total mass of the monomers into a four-necked flask equipped with magnetic stirring , stirred for more than 1 hour to become an aqueous phase mixture;

[0060] (3) the oil phase mixture is gradually added dropwise to the water phase mixture, and the hydrolysis reaction of the organosilicon...

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Abstract

The invention discloses a preparation method for silicone-acrylic miniemulsion. The preparation method comprises the following steps: mixing acrylate monomers, organosilicone monomers and a stabilizer, stirring until complete dissolution, and obtaining an oil-phase mixture, wherein the organosilicone monomers include non-functional organosilicone monomers and functional organosilicone monomers, and the non-functional organosilicone monomers include methyltrimeth(eth)oxysilane, propyltrimeth(eth)oxysilane or phenyltrimeth(eth)oxysilane; dissolving an emulsifier and water, and stirring uniformly to obtain a water-phase mixture; adding the oil-phase mixture into the water-phase mixture, producing a hydrolysis-emulsification reaction, performing ultrasonic miniemulsification, and producing a miniemulsion polymerization reaction of a mixed solution in an oxygen-free condition at 50-70 DEG C to obtain the silicone-acrylic emulsion. The preparation method is used for performing miniemulsion polymerization on a monomer system consisting of the non-functional organosilicone monomers, the functional organosilicone monomers and the acrylate monomers, the prepared silicone-acrylic miniemulsion is relatively high in both silicon content and solid content, and the coagulation rate can be reduced to 0%.

Description

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Claims

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Application Information

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Owner ZHEJIANG UNIV
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