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Preparation method of hyperbranched modified azobenzene and acrylate copolymer emulsion

A technology of acrylate and copolymerization emulsion, which is applied in the direction of chemical instruments and methods, color-changing fluorescent materials, etc., can solve the problems of rare reports on copolymerization reactions, and achieve the effects of rich raw material sources, expanded application range, and wide applicability

Active Publication Date: 2014-11-12
JIANGSU YINBAO AGRI SCI RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] As can be seen from the above prior art, the current azobenzene preparation technology is too much concentrated in the modification technology of azobenzene, and there are few reports on the copolymerization reaction with polymer emulsion

Method used

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  • Preparation method of hyperbranched modified azobenzene and acrylate copolymer emulsion
  • Preparation method of hyperbranched modified azobenzene and acrylate copolymer emulsion
  • Preparation method of hyperbranched modified azobenzene and acrylate copolymer emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 1. Preparation of mixed hydrolysis hyperbranched system

[0044] Add 27.5g of 3-glycidyloxypropyltrimethoxysilane, 23.6g of 3-methacryloyloxypropyltrimethoxysilane, 55mL of absolute ethanol into a three-necked flask, magnetic stirring, N 2 Under protection, the temperature was raised to 65°C, and reflux condensed at this temperature. 5.82 g of distilled water was added dropwise, and a certain amount of sodium hydroxide was added to control the pH of the system to be 11, and the rotating speed was 150 rpm to stir and keep warm for 4.5 hours. After the reaction is over, distill under reduced pressure at 80°C to obtain a mixed hydrolysis hyperbranched system. The structural formula is shown in Figure 5 ,in

[0045]

[0046] 2. Preparation of hyperbranched modified azobenzene

[0047] Weigh 13.5g of the mixed hydrolysis hyperbranched system into a three-necked flask, add 31mL of absolute ethanol, stir magnetically to form a uniform solution, add dropwise 18mL of abso...

Embodiment 2

[0057] 1. Preparation of mixed hydrolysis hyperbranched system

[0058] According to the technical scheme of Example 1, a mixed hydrolysis hyperbranched system was prepared.

[0059] 2. Preparation of hyperbranched modified azobenzene

[0060] Prepare hyperbranched modified azobenzene according to the technical scheme of Example 1.

[0061] 3. Copolymerization of hyperbranched modified azobenzene and acrylate

[0062] Take 10.2g of methyl methacrylate, 23.2g of butyl acrylate, 0.8g of sodium lauryl sulfate, 0.72g of OP-10, 0.12g of hyperbranched modified azobenzene, and 85mL of deionized water. Pre-emulsify on the agitator with a rotation speed of 400r / min. Weigh 0.21g of initiator ammonium persulfate to prepare a 0.02g / mL aqueous solution. After half an hour of pre-emulsification, take 1 / 4 each of the pre-emulsion and the ammonium persulfate solution into a four-necked bottle, and react under stirring at a speed of 250r / min. The remaining pre-emulsion was dispersed at hi...

Embodiment 3

[0064] 1. Preparation of mixed hydrolysis hyperbranched system

[0065] According to the technical scheme of Example 1, a mixed hydrolysis hyperbranched system was prepared.

[0066] 2. Preparation of hyperbranched modified azobenzene

[0067] Prepare hyperbranched modified azobenzene according to the technical scheme of Example 1.

[0068] 3. Copolymerization of hyperbranched modified azobenzene and acrylate

[0069] Take 10.2g of methyl methacrylate, 23.2g of butyl acrylate, 0.8g of sodium lauryl sulfate, 0.72g of OP-10, 0.24g of hyperbranched modified azobenzene, and 85mL of deionized water. Pre-emulsify on the agitator with a rotation speed of 400r / min. Weigh 0.21g of initiator ammonium persulfate to prepare a 0.02g / mL aqueous solution. After half an hour of pre-emulsification, take 1 / 4 each of the pre-emulsion and the ammonium persulfate solution into a four-necked bottle, and react under stirring at a speed of 250r / min. The remaining pre-emulsion was dispersed at hi...

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Abstract

The invention relates to a preparation method of a hyperbranched modified azobenzene and acrylate copolymer emulsion. An emulsion polymerization reaction is carried out in a four-hole bottle provided with a condenser tube, a mechanical stirrer and a constant voltage funnel by adopting a pre-emulsification technology under the protection of nitrogen. The method comprises the following steps: pre-emulsifying methyl methacrylate, butyl acrylate monomer, sodium dodecyl sulfat, deionized water and hyperbranched modified azobenzene in a constant temperature magnetic stirrer; and adding the above obtained pre-emulsion and an ammonium persulfate solution to the four-hole bottle, and reacting under stirring to obtain the hyperbranched modified azobenzene and acrylate copolymer emulsion. The hyperbranched modified azobenzene and acrylate emulsion copolymerization reaction method has the advantages of simple operation process, abundant sources of raw materials, extensive applicability and easy industrial production.

Description

technical field [0001] The invention belongs to the field of chemical material synthesis and relates to a method for preparing a hyperbranched modified azobenzene and acrylate copolymer emulsion. Background technique [0002] Acrylate materials are new high-grade materials that have been developed rapidly in the past 20 years. They have many advantages such as strong adhesion, UV resistance, high film-forming properties, cheap and easy-to-obtain raw materials, and simple synthesis processes. They are widely used in paints, coatings, and adhesives. Agents, fabric finishing agents and other industries have been widely used. With the continuous development of society, the amount of acrylic polymers is increasing day by day. People's requirements for materials are getting higher and higher, and pure acrylic materials are difficult to meet the requirements. In order to expand the application range, people often modify them in order to obtain products with better performance. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/12C08F220/18C08F220/14C08F2/30C08F2/26C08G77/388C08G77/20C08G77/14C08G77/26C09K9/02
Inventor 徐磊虞利俊唐玉邦
Owner JIANGSU YINBAO AGRI SCI RES INST CO LTD
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