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Method of synthesizing macromolecule monomer based on P-vinylbenzene sulfuryl chloride end sealing agent

A technology of vinylbenzenesulfonyl chloride end-capping agent and macromonomer, which is applied in the field of polymer chemistry, can solve the problems of high double bond content and harsh conditions, and achieve the effect of high reactivity

Inactive Publication Date: 2007-08-15
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented process allows for better control over polymer properties during chemical reactions without adding excessive amounts of an initiator (PVC) that could affect other important qualities such as mechanical strength or optical clarity.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the efficiency and purity of producing macromonoligonucleotides containing both hydroxyl radicals on one side and unsaturated carboxylbonyls at another side for use in various applications such as biomedics. Existing methods require expensive starting materials and long time periods before achieving desired results due to reactivity differences caused by factors including acid catalysis, heat treatment, and additionally chemical reagents.

Method used

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  • Method of synthesizing macromolecule monomer based on P-vinylbenzene sulfuryl chloride end sealing agent
  • Method of synthesizing macromolecule monomer based on P-vinylbenzene sulfuryl chloride end sealing agent
  • Method of synthesizing macromolecule monomer based on P-vinylbenzene sulfuryl chloride end sealing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Nitrogen gas-vacuumization-gas lamp baking bottle-nitrogen gas, repeat this 3 times, and continue to nitrogen gas to maintain positive pressure in the reaction bottle. Add 28ml of cyclohexane into the reactor with a pouring tube, then add 2.2ml of styrene and 0.5ml of tetrahydrofuran sequentially with a syringe, and start stirring. Slowly drop n-butyllithium initiator into the reactor at a certain temperature to turn the system into orange-yellow color and keep it for 1 min without fading. Then inject 1.85ml of n-butyllithium solution (0.38mol / L) quickly once at a time, and the solution is orange red of carbanion at this time. Put it into a 50°C water bath and continue the reaction for 0.5 hours. That is, the activity of polystyrene long chain.

[0024] Under nitrogen protection, feed ethylene oxide gas into the polymerization bottle until the orange-red color of the solution turns pale yellow, and react in a water bath at 25°C for half an hour.

[0025] 28 ml of tet...

Embodiment 2

[0028] Nitrogen gas-vacuumization-gas lamp baking bottle-nitrogen gas, repeat this 3 times, and continue to nitrogen gas to maintain positive pressure in the reaction bottle. Add 30 ml of cyclohexane into the reactor with a pouring tube, then add 3 ml of styrene and 0.5 ml of tetrahydrofuran sequentially with a syringe, and start stirring. Slowly drop n-butyllithium initiator into the reactor at a certain temperature to turn the system into orange-yellow color and keep it for 1 min without fading. Then inject 1.5ml of n-butyllithium solution (0.45mol / L) quickly once at a time, and the solution is orange red of carbanion at this moment. Put it into a 50°C water bath and continue the reaction for 0.5 hours. That is, the activity of polystyrene long chain.

[0029] Under the protection of nitrogen, ethylene oxide gas was passed into the polymerization bottle until the orange-red color of the solution turned pale yellow, and the polymerized polystyrene was reacted in a water bat...

Embodiment 3

[0033] Take the three reaction flasks labeled ①②③, and follow the steps below to synthesize reactive polystyrene and react with ethylene oxide.

[0034] Nitrogen gas-vacuumization-gas lamp baking bottle-nitrogen gas, repeat this 3 times, and continue to nitrogen gas to maintain positive pressure in the reaction bottle. Add 30 ml of cyclohexane into the reactor with a pouring tube, then add 3 ml of styrene and 0.5 ml of tetrahydrofuran sequentially with a syringe, and start stirring. Slowly drop n-butyllithium initiator into the reactor at a certain temperature to turn the system into orange-yellow color and keep it for 1 min without fading. Then inject 1.5ml of n-butyllithium solution (0.87mol / L) rapidly once at a time, and the solution is orange red of carbanion at this moment. Put it into a 50°C water bath and continue the reaction for 0.5h. That is, the activity of polystyrene long chain.

[0035] Under the protection of nitrogen, feed ethylene oxide gas into the polymer...

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Abstract

The invention discloses a synthesizing method of macromolecular monomer based on P-ethylene benzene sulfochloride capping agent in the macromolecular chemical domain, which comprises the following steps: 1. adopting anion polymerizing method to synthesize active polyphenylacetylene; 2. transmitting active chain anion carbon into anion oxygen through epoxyethane; 3. adopting one method of positive adding, negative adding, low-temperature and high-tempeature reacting methods to cap end of P-ethylene benzene sulfochloride for 2-24h.

Description

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Claims

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Application Information

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Owner BEIJING UNIV OF CHEM TECH
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