Methyl-phenyl-piperazinyl modified polysiloxane

A technology of methylphenyldimethoxysilane and polysiloxane, which is applied in the field of synthesis of methyl-phenyl-piperazinyl modified polysiloxane, can solve the problem of increased stability and hydrophilicity, Unsatisfactory hydrophilicity, unsatisfactory temperature change adaptability, etc., to achieve the effect of easy emulsification and improved storage stability

Active Publication Date: 2016-01-20
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present method allows for easy production of modified silicon oxanes with specific properties by combining two different chemicals together at multiple steps during reaction. This results in an organopolymer that has better thermal/chemical resistances than existing materials while maintaining their solubility or dispersibility characteristics over time.

Problems solved by technology

This patented technical problem addressed in this patent relates to developing novel types of chemical agents that exhibit excellent performance at extreme temperatures while being able to resist attack against certain molecules like alcohols without losing them permanently.

Method used

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  • Methyl-phenyl-piperazinyl modified polysiloxane
  • Methyl-phenyl-piperazinyl modified polysiloxane
  • Methyl-phenyl-piperazinyl modified polysiloxane

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Example 1: Hydrolysis of methylphenyldimethoxysilane

[0024] with N 2 Add 18.22g of methylphenyldimethoxysilane into the three-necked flask of the protective device, raise the temperature to 80°C, add 3.8g of deionized water dropwise into the flask, and continue the reaction for 1h. The two separated items gradually react. Eventually a homogeneous liquid is formed. Remove N 2 Protect the device, vacuumize for 2 hours, and finally obtain a light yellow transparent liquid, which is a hydrolyzate.

Embodiment 2

[0025] Example 2: Preparation of methyl-phenyl-piperazinyl modified polysiloxane

[0026] with N 2 Add 6.1g of octamethylcyclotetrasiloxane, 1.2g of the hydrolyzate in Example 1, 0.36g of 10% KOH to the flask of the protective device, react at a constant temperature of 50°C for 2h, and then add 3g of γ-piperazinylpropylmethyl dimethyl Oxysilane, continue to react for 1h, add 1g of hexamethyldisiloxane, react for 40min, add glacial acetic acid to neutralize the system, remove low boilers under reduced pressure, and obtain methyl-phenyl-piperazinyl with a viscosity of 111cp Modified polysiloxane.

Embodiment 3

[0027] Example 3: Preparation of methyl-phenyl-piperazinyl modified polysiloxane

[0028] with N 2 Add 6.5g of octamethylcyclotetrasiloxane, 1.0g of the hydrolyzate in Example 1, 0.36g of 10% KOH to the flask of the protective device, react at a constant temperature of 60°C for 2h, and then add 3g of γ-piperazinylpropylmethyl dimethyl Oxysilane, continue to react for 1h, add 1g of hexamethyldisiloxane, react for 40min, add glacial acetic acid to the system to neutralize, remove low boilers under reduced pressure, and obtain methyl-phenyl-piperazine with a viscosity of 488cp Modified polysiloxane.

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Abstract

The invention provides a novel methyl-phenyl-piperazinyl modified polysiloxane and a preparation method thereof. The methyl-phenyl-piperazinyl modified polysiloxane is synthesized through ring-opening polymerization and equilibrium condensation polymerization with otcamethylcyclotetrasiloxane (D4), methylphenyldimethoxysilane (MPDS), gamma-piperazinylpropylmethyldimethoxysilane and hexamethyldisiloxane as raw materials and potassium hydroxide (KOH) as an initiator for ring opening of D4 and a catalyst for condensation polymerization. The synthesized methyl-phenyl-piperazinyl modified polysiloxane is applicable as an oiling agent for preoxidation of a carbon fiber precursor.

Description

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Claims

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Application Information

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Owner CHANGCHUN UNIV OF TECH
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