Preparation method of amphipathic free radical type polysiloxane-polyurethane prepolymer

A polyurethane prepolymer, polysiloxane technology, applied in the field of polyurethane, can solve the problems of uneven distribution, poor compatibility and stability, and achieve high water resistance, good stability, improved water resistance and solvent resistance. Effect

Inactive Publication Date: 2018-05-08
传化智联股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of existing emulsions such as poor compatibility and stability and uneven distribution, and to provide a preparation method for amphiphilic free radical type polysiloxane-polyurethane prepolymer. The obtained amphiphilic free radical polysiloxane-polyurethane prepolymer is suitable for synergist emulsion for fabric surface treatment

Method used

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  • Preparation method of amphipathic free radical type polysiloxane-polyurethane prepolymer

Examples

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Effect test

Embodiment 1

[0039] Example 1: 6g polyethylene glycol (molecular weight 400) was distilled under reduced pressure at a temperature of 120°C and a vacuum degree of 0.09MPa for 1 hour, and then the temperature was lowered to 60°C for use; a thermometer, Add 12g of toluene diisocyanate to the stirring rod and condenser, heat to increase the temperature, and control the temperature between 70-80℃. Add 6g of polyethylene glycol (molecular weight 400) dropwise within 1 hour, keep the temperature for 1 hour after the addition is complete. High to 80-85℃, add 30g of hydroxyethyl silicone oil with molecular weight of 2000 in 1 hour, keep it for 3 hours after the addition is complete; then control the temperature at 70-80℃, and add 0.9g of N-methyl in 10 minutes Diethanolamine, keep the temperature for 0.5 hours after the addition is complete; then add 0.5g of hydroxypropyl acrylate at one time, keep the temperature at 70-80℃, add 1g of glacial acetic acid after 1 hour, keep for 0.5 hours; cool to roo...

Embodiment 2

[0040] Example 2: 6.5g polypropylene glycol (molecular weight 400) was distilled under reduced pressure at a temperature of 120°C and a vacuum of 0.09MPa for 1 hour, and then the temperature was lowered to 60°C for use; a thermometer was installed on a four-necked flask and stirred Stick and condenser, add 12.1g isophorone diisocyanate, heat and increase the temperature, control the temperature between 70-80℃, add 6.5g polypropylene glycol (molecular weight 400) dropwise within 1 hour, keep the temperature for 1 hour after the addition is complete, The temperature was raised to 80-85℃, 32g of hydroxypropyl silicone oil with molecular weight of 3000 was added dropwise within 1 hour, and the temperature was kept for 3 hours after the addition was completed; then the temperature was controlled at 70-80℃, and 0.7g of N-ethyl was added dropwise within 10 minutes Diethanolamine, keep the temperature for 0.5 hours after the addition is complete; then add 0.45g of hydroxyethyl methacryl...

Embodiment 3

[0041] Example 3: 5g polypropylene glycol (molecular weight 400) was distilled under reduced pressure at a temperature of 120°C and a vacuum of 0.09MPa for 1 hour, then the temperature was lowered to 60°C for use; a thermometer and a stirring rod were installed on a four-necked flask And the condenser, add 12.3g isophorone diisocyanate, heat and increase the temperature, control the temperature between 70-80℃, add 5g polypropylene glycol (molecular weight 400) dropwise within 1 hour, keep the temperature for 1 hour after the drop When the temperature is as high as 80-85℃, add 38g of hydroxypropyl silicone oil with a molecular weight of 3000 within 1 hour, keep it for 3 hours after the addition is complete; then control the temperature at 70-80℃, and add 0.93g of dihydroxymethyl within 10 minutes Propionic acid, keep the temperature for 0.5 hours after the addition is complete; then add 0.5g of hydroxypropyl methacrylate at one time, keep the temperature at 70-80℃, add 1g of trie...

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Abstract

The invention discloses a preparation method of an amphipathic free radical type polysiloxane-polyurethane prepolymer. Existing emulsion has the disadvantage of being poor in compatibility and stability and not uniform in distribution. The method comprises the following steps that polyhydric alcohol and functionalized silicone oil are dropwise added in diisocyanate for a reaction, a chain extenderis then dropwise added, olefine acid hydroxyl ester is added, and the amphipathic free radical type polysiloxane-polyurethane prepolymer is obtained. The obtained amphipathic free radical type polysiloxane-polyurethane prepolymer has the functions of improving the heat resistance, cold resistance, light transmission, hydrophobicity, biological compatibility and the like, and is applicable to synergist emulsion for fabric surface treatment.

Description

Technical field [0001] The invention belongs to the field of polyurethane, and specifically relates to a preparation method of amphiphilic free radical type polysiloxane-polyurethane prepolymer. Background technique [0002] Water-based polyurethane (WPU) is a binary colloidal system with water as the dispersion medium. Compared with solvent-based polyurethane, it has the advantages of non-combustibility, low odor, no environmental pollution, energy saving, good flexibility, and convenient operation and processing. The more it has been recognized by the market, it has been widely used in the fields of dispersant and emulsion polymerization. [0003] Polysiloxane is a polymer with silicon-oxygen bonds as the main chain and organic groups as side chains. It has extremely low surface properties, excellent water repellency, air permeability, heat resistance, chemical resistance and other properties. Polyurethane modification can give it many excellent characteristics, such as good wat...

Claims

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Application Information

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IPC IPC(8): C08G18/32C08G18/34C08G18/42C08G18/48C08G18/61C08G18/66C08G18/67D06M15/568D06M15/572D06M101/32
CPCC08G18/3206C08G18/3275C08G18/348C08G18/4238C08G18/4825C08G18/4833C08G18/61C08G18/664C08G18/6688C08G18/6692C08G18/672D06M15/568D06M15/572D06M2101/32D06M2200/12
Inventor 杨欣宋金星陈八斤张小伟乐翔周晖
Owner 传化智联股份有限公司
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