Synthesis method for terpolymer block silicone oil

A technology of block silicone oil and synthesis method, which is applied in the directions of silicone organic compounds, textiles and papermaking, fiber processing, etc., can solve the problems of difficulty in washing, sticking to rollers, poor stability of amino-modified silicone emulsions, etc. Good hand feeling, no demulsification and layering effect

Active Publication Date: 2013-07-24
ZHEJIANG JIEFA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Silicon rubbers have excellent characteristics such as heat resistance, durability against abrasions, flexibility with stretchiness, elasticity, comfort during use, ease of cleanup when washed them without leaving any residue behind, ability to absorb moisture from clothing easily, and being able to create lubricating films between fibers. These qualities make these materials ideal candidates for making fabrics suitable for various applications like medical care products (hydrogel dressings), protective garage covers, household appliances, automotives, sport equipment, industrial tools, and other industries where they may come into contact with human skin over time.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the quality (softness) and durability of fabric finishes made from these types of oils due to their low water repelling properties. These compositions can break down easily over time without losing its effectiveness for cleanliness purposes.

Method used

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Experimental program
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Effect test

Embodiment 1

[0016] The general idea of ​​the present invention is as follows: first, under the catalysis of platinum metal, hydrogen-containing silicone oil at the end and allyl glycidyl ether are catalyzed by platinum metal, and the hydrogen bond at the siloxane end is added to the carbon double bond to generate an epoxy double-end cap at the end (also can be It is a commercially available end epoxy double head), and then the end epoxy double head is ring-opened with D4 (octamethylcyclotetrasiloxane) or DMC (dimethylcyclosiloxane) to form an end epoxy silicone oil , Then, the adduct is reacted and condensed with polyether under solvent conditions. The reaction formula is as follows:

[0017] .

[0018] Concrete reaction steps of the present invention are as follows:

[0019] A. Add 100g of DMC (dimethylcyclosiloxane) or D4 (octamethylcyclotetrasiloxane) to a 250ml three-necked flask; add 4g of epoxy double-capping agent; then add 15 parts of dimethylacetamide , raise the temperature...

Embodiment 2

[0025] Embodiment 2 of the present invention: Step A and the rest are the same as in Embodiment 1, and will not be described in detail. The difference is that in the reaction step B, the epoxy-terminated silicone oil obtained in the step A is added to a 500ml three-necked flask: 90g, polyether multi-component Alcohol 203: 5g, polyether polyol 206: 2.5g, polyether polyol 209: 2.5g, isopropanol: 150g, carry out reflux reaction at 80°C for 12h, and finally remove isopropanol under reduced pressure or add propylene glycol to replace the solvent , to obtain a light yellow and transparent amino polyether block silicone oil, that is, a tertiary block copolymerized silicone oil.

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PUM

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Abstract

The invention discloses a synthesis method for terpolymer block silicone oil. The synthesis method is characterized by comprising the steps of: (A) adding 100 parts by weight of dimethyl cyclosiloxane or octamethyl cyclotetrasiloxane, 4 parts by weight of epoxy-terminated disiloxane and 15 parts by weight of dimethylacetamide, raising the temperature to 70-80 DEG C, adding 0.02-0.1 part by weight of base catalyst, raising the temperature to 110-120 DEG C, reacting for 3-4 hours, slowly opening vacuum, extracting solvents and low molecular weight matters, continuously raising the temperature to 140-145 DEG C, maintaining the temperature and the vacuum for 2 hours, so as to obtain epoxy silicone oil; and (B) adding 80-100 parts by weight of epoxy-terminated silicone oil, 6-30 parts by weight of polyether polyol and 150 parts by weight of isopropyl alcohol, carrying out backflow reaction for 6-15 hours at 80-86 DEG C, and decompressing and removing the isopropyl alcohol or adding a propylene glycol displacement solvent, so as to obtain amino polyether block silicone oil. By utilizing the terpolymer block silicone oil disclosed by the invention, the fabric has good hand feel, namely fluffy feel and smooth feel, cannot be yellowed or is slightly yellowed.

Description

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Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Owner ZHEJIANG JIEFA TECH
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