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Synthesis method of novel responsive amino modified polyether organic silicon surfactant

A polyether silicone and surfactant technology, applied in chemical instruments and methods, transportation and packaging, dissolution, etc., to increase hydrophilicity, increase conversion rate, and reduce side reactions

Inactive Publication Date: 2020-05-15
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still differences between domestic polyether modified silicone oils and imported modified silicone oils, so in recent years people have paid more attention to the development and application of modified polyether silicone oils

Method used

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  • Synthesis method of novel responsive amino modified polyether organic silicon surfactant
  • Synthesis method of novel responsive amino modified polyether organic silicon surfactant
  • Synthesis method of novel responsive amino modified polyether organic silicon surfactant

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Embodiment 1

[0025] Due to the existence of the amine group in the hydrophilic head group of the surfactant, compound A can bind protons in the solution, and the surfactant has two forms of cation and anion in the solution as the pH of the solution changes. Due to the difference in the charge repulsion between the two forms of head groups and the hydrophilic ability of the head group, the corresponding parameters of compound A are also significantly different. Therefore, as the pH of the solution changes, the morphology of the aggregates may also change. Combined with the visual phenomenon of its surfactants at different pHs at the same mass concentration, we can preliminarily speculate on the transformation of its aggregates. As the pH of the solution increases, the sample changes from a colorless transparent solution to a blue opalescent solution, and it is speculated that a large self-assembly appears. Compound A solution has the property of pH-induced aggregation behavior change.

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Abstract

The invention discloses a synthesis method of a novel responsive amino modified polyether organic silicon surfactant. The method comprises the following steps: sequentially adding quantitative silicone oil with a high hydrogen content, D4, MM, and concentrated sulfuric acid into a reactor, starting a stirrer, heating to 50-60 DEG C, regulating the pH value of the product to 7.0 by using sodium carbonate after the required viscosity is reached, carrying out suction filtration by using a filter flask to obtain colorless transparent silicone oil with a low hydrogen content; adding quantitative PHMS, allyl glycidyl ether and an epoxy stabilizer into the reactor in sequence, introducing protective N2 into the reactor, starting the stirrer, raising the temperature to 80 DEG C, carrying out a reaction for 1 h at a constant temperature of 90 DEG C, then adding allyl polyoxyethylene acetate and chloroplatinic acid into the reactor, and carrying out a reaction until the mixture becomes transparent. Through a hydrosilylation reaction, allyl polyoxyethylene acetate and allyl glycidyl ether are introduced into a polysiloxane chain of hydrogen-containing silicone oil to prepare a modified polyether organic silicon intermediate, and the hydrophilicity is improved through the introduction of polyoxyethylene.

Description

technical field [0001] The invention relates to a synthesis method of a surfactant, in particular to a synthesis method of a novel responsive amino-modified polyether silicone surfactant. Background technique [0002] The rich and diverse aggregation structures from the microscale to the nanoscale make surfactants play an important role in many fields such as materials science, nanoscience, and biomedicine. Therefore, the regulation of the aggregation behavior of surfactants has become a hot topic of current research. If a stimulus-responsive group is introduced into the structure of the surfactant, the surfactant can respond to external stimuli by changing external factors, thereby developing this type of new surfactant has potential value, such as: developing new Separation methods, gene transfection agents, controlled release of carrier drugs. Among them, high-molecular surfactants have some characteristics that low-molecular surfactants do not have, such as: good thick...

Claims

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Application Information

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IPC IPC(8): C08G77/46B01F17/54C09K23/54
CPCC08G77/46C09K23/00
Inventor 姚成武前松郭毅
Owner NANJING UNIV OF TECH
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