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Novel zwitterionic polyelectrolyte dispersing agent as well as method and application thereof

A zwitterion, polyelectrolyte technology, applied in chemical instruments and methods, dissolution, sulfonate preparation, etc., can solve problems such as poor stability, high price, environmental pollution, etc., and achieve good coverage and encapsulation effects, Increased repulsion, good chemical and thermal stability

Active Publication Date: 2014-12-17
国科广化(南雄)新材料研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dispersion effect of this kind of dispersant is better than that of inorganic dispersant, but the price is relatively high, the stability is not very good, and it will cause pollution to the environment

Method used

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  • Novel zwitterionic polyelectrolyte dispersing agent as well as method and application thereof
  • Novel zwitterionic polyelectrolyte dispersing agent as well as method and application thereof
  • Novel zwitterionic polyelectrolyte dispersing agent as well as method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1. Add 15.7g of dimethylaminoethyl methacrylate (DM), 55g of acetone, and 0.05g of hydroquinone (polymerization inhibitor) into a 250ml three-necked flask and stir and mix (stirring speed is 400r / min) to obtain a mixed Put it into an oil bath and heat it to 35°C and reflux to condense to prevent volatilization of acetone. Use a constant pressure leak to drop the acetone solution of 1,3-propane sultone ( This solution is composed of 12.2g of 1,3-propane sultone and 11.0g of acetone), reacted at 35°C for 24 hours, a large amount of white solids precipitated; filtered and washed the solids with acetone repeatedly for 5 times, dissolved in methanol, added Diethyl ether was recrystallized three times, and vacuum-dried at 50°C for 12 hours after suction filtration to obtain DMAPS.

[0043] 2. Preparation of PDMAPS

[0044] In a 250mL four-neck flask equipped with a stirrer, a dropping funnel, and a reflux condenser, add 6g of DMAPS, 0.6g of sodium hypophosphite, and 30g of d...

Embodiment 2

[0046]1. Add 15.7g of dimethylaminoethyl methacrylate (DM), 55g of acetone, and 0.05g of hydroxyanisole (polymerization inhibitor) into a 250ml three-necked flask and stir and mix (stirring speed is 600r / min). Put it into an oil bath and heat it to 45°C and reflux to condense to prevent the volatilization of acetone; use a constant pressure leak to drip the acetone solution of 1,3-propane sultone into the flask at a speed of 12 s / drop (this solution consists of 12.2 g of 1,3-propane sultone and 12.2 g of acetone), reacted at 45°C for 18 hours, and a large amount of white solids precipitated; suction filtered and washed the solids 4 times with acetone, dissolved in ethanol, and recrystallized three times by adding ether , vacuum-dried at 60°C for 12 hours after suction filtration to obtain DMAPS.

[0047] 2. Preparation of PDMAPS

[0048] In a 250mL four-neck flask equipped with a stirrer, a dropping funnel, and a reflux condenser, add 6g of DMAPS, 0.3g of sodium hypophosphite...

Embodiment 3

[0050] 1. Add 15.7g of dimethylaminoethyl methacrylate (DM), 55g of acetone, and 0.05g of p-benzoquinone (polymerization inhibitor) into a 250ml three-necked flask and stir to mix (stirring speed is 300r / min), put it Heat to 55°C in an oil bath and reflux to condense to prevent volatilization of acetone; drip the acetone solution of 1,3-propane sultone (this solution consists of 12.2g Composed of 1,3-propane sultone and 13.4g of acetone), reacted at 55°C for 10 hours, a large amount of white solid precipitated; filtered with suction and washed the solid twice with acetone; dissolved in methanol, recrystallized by adding ether three times, After suction filtration, vacuum-dry at 40°C for 24 hours to obtain DMAPS.

[0051] 2. Preparation of PDMAPS

[0052] In a 250mL four-neck flask equipped with a stirrer, a dropping funnel, and a reflux condenser, add 6g of DMAPS, 0.12g of sodium hypophosphite, and 60g of deionized water, stir to dissolve (stirring speed is 600r / min), and hea...

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Abstract

The invention belongs to the technical field of dispersing agent preparation, and discloses a novel zwitterionic polyelectrolyte dispersing agent, as well as a method and an application of the novel zwitterionic polyelectrolyte dispersing agent. The dispersing agent is prepared by the following steps: sequentially adding 100 parts by weight of 3-(2-methacryloyloxyethyl dimethylamino) propyl sulfonate, 2-10 parts by weight of a chain transfer agent and 500-1,000 parts by weight of deionized water to a reactor, and stirring and dissolving the raw materials, so as to obtain a mixed liquid; and dropwise adding 100-200 parts by weight of initiator liquid to react for 2-5 hours at 60-100 DEG C, stopping heating and cooling to room temperature, so as to obtain a colorless clear liquid, namely the zwitterionic polyelectrolyte dispersing agent liquid. The dispersing agent is good in coverage and encapsulation effects on the disperse particle surfaces, stable in dispersion system, good in chemical property and heat stability, and strong in hydration capacity, is hardly affected by pH value of the liquid, and can be applied to ceramic slurry dispersion, nano-powder dispersion and the like.

Description

technical field [0001] The invention belongs to the technical field of dispersant preparation, and in particular relates to a novel zwitterionic polyelectrolyte dispersant and its method and application. Background technique [0002] Nanomaterials refer to materials composed of extremely fine particles with characteristic sizes on the order of nanometers (1-100nm). In a broad sense, nanomaterials refer to materials with at least one dimension in the order of nanometers in the three-dimensional space. They are divided into zero-dimensional nanomaterials, one-dimensional nanomaterials, two-dimensional nanomaterials, and solids based on the above-mentioned low-dimensional materials. With the development of science and technology, nanomaterials have attracted extensive attention and research, and have achieved certain applications in the fields of mechanics, magnetism, electricity, heat, optics and biomedicine. [0003] At the same time, due to the large specific surface area a...

Claims

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Application Information

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IPC IPC(8): C08F120/38C07C309/14C07C303/32C04B24/16C04B35/634B01F17/52C09K23/52
Inventor 王斌谢义鹏黄月文李雅杰郑周杨璐霏
Owner 国科广化(南雄)新材料研究院有限公司
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