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Method for synthesizing hydroxyl polysiloxane

A technology for synthesizing hydroxypolysiloxane and hydroxypolysiloxane, which is applied in the direction of plant fibers, etc., can solve problems such as high energy consumption, unstable product quality, and difficult control of the reaction process, and achieve simple reaction devices and good industrial applications Foreground, producing more easily controllable effects

Inactive Publication Date: 2011-10-05
石振东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reaction process of this method is not easy to control, the product quality is unstable, and the energy consumption is large at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 3 mol D4 into the reactor, add 0.3 mol sodium hydroxide, stir at 60°C for 1 hour, then add 0.3 mol deionized water, 0.1 mol ethylenediamine, keep the temperature at 60°C, and continue stirring for 6 hours , to obtain a viscous transparent liquid. The product was washed with deionized water until neutral, and the monomer was removed by vacuum to obtain the product.

Embodiment 2

[0025] Weigh 3 mol D4 into the reactor, add 0.25 mol sodium hydroxide, stir at 80°C for 0.5 hours, then add 0.05 mol deionized water, 0.8 mol 3,3'-diaminodipropylamine, keep the temperature The temperature was 80°C, and the stirring was continued for 5 hours to obtain a viscous transparent liquid. The product was washed with deionized water until neutral, and the monomer was removed by vacuum to obtain the product.

Embodiment 3

[0027] Weigh 3 mol D3 into the reactor, add 0.1 mol sodium hydroxide, stir at 40°C for 2 hours, then add 0.012 mol deionized water, 0.2 mol ethylenediamine, keep the temperature at 40°C, and continue stirring for 4 hours , to obtain a viscous transparent liquid. The product was washed with deionized water until neutral, and the monomer was removed by vacuum to obtain the product.

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PUM

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Abstract

The invention discloses a method for synthesizing hydroxyl polysiloxane. The method comprises the following steps of: (1) weighing a reaction monomer and alkali, adding into a reactor, and stirring at the temperature of between 40 and 80 DEG C for 0.5 to 2 hours; (2) adding deionized water and amine into the reactor, preserving the heat at the temperature of between 40 and 80 DEG C and reacting with stirring for 4 to 9 hours; and (3) performing water washing on a product until the product is neutral, and vacuumizing to obtain a hydroxyl polysiloxane product. The method for synthesizing the hydroxyl polysiloxane is simple and practical and is low in cost.

Description

technical field [0001] The invention relates to the synthesis of polysiloxane, in particular to a method for synthesizing hydroxyl polysiloxane. Background technique [0002] Polyorganosiloxane molecules have the following characteristics: (1) Good electrical insulation, flame retardancy, and weather resistance; (2) Ideal physiological and chemical inertness, non-toxic, and non-polluting ecological environment; (3) Glass transition temperature Low temperature, high resistance, good low temperature performance, low high temperature rheology; (4) easy spreading film forming, defoaming, hydrophobicity and lubricity caused by low surface tension. It can form block copolymers with other polymer materials. In particular, the polyorganosiloxane emulsion is used in the padding finishing of fabrics, which can not only effectively isolate fibers and avoid direct contact between fibers, but also reduce the friction coefficient of the fiber surface, making the fibers easy to slide rela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/16C08G77/08D06M15/643D06M101/06
Inventor 石振东
Owner 石振东
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