A kind of silicon-modified polyether and preparation method thereof, application

A technology of silicon modification and polyether, which is applied in the direction of silicon organic compounds, non-ionic surface active compounds, fiber treatment, etc., and can solve the problems of affecting the quality of textiles and the high price of silicone defoamers.

Active Publication Date: 2019-11-29
SHANGHAI DONGDA CHEM
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the physical blending of organic silicon defoamer and penetrant in the prior art, although better low foaming effect can be obtained, but silicone defoamer is more expensive and easy to deposit Silicon spots are formed on textile fabrics, which affect the quality of textiles. A silicon-modified polyether and its preparation method and application are provided.

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of silicon-modified polyether and preparation method thereof, application
  • A kind of silicon-modified polyether and preparation method thereof, application
  • A kind of silicon-modified polyether and preparation method thereof, application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] 1. Preparation of polyether:

[0056] In the pressure reaction kettle, add 100 parts of isooctyl alcohol (6-methyl-1-heptanol) and KOH (the amount is 0.2% of the weight of isooctyl alcohol), replace the air in the kettle with nitrogen 3 times, and heat to 110 ℃, dehydration for 30min in a vacuum environment below -0.09MPa. Then the temperature was raised to 120°C, and ethylene oxide was slowly added dropwise (the molar ratio of ethylene oxide to isooctyl alcohol was 3:1), and the ring-opening polymerization reaction was carried out under the conditions of pressure of 0.25MPa and temperature of 130°C, and added dropwise After the ethylene oxide is over, the aging reaction is 30min to obtain polyether; its general structural formula is as follows:

[0057]

[0058] R is the part where the hydroxyl group is removed from 6-methyl-1-heptanol, m=3, n=0;

[0059] Determine the hydroxyl value [I(OH)(mg / g)] of the synthesized polyether according to the method of GB / T 7383-2007, and u...

Embodiment 2

[0068] 1. Preparation of polyether:

[0069] In the pressure reactor, add 100 parts of isooctyl alcohol (EXXAL TM 8) With NaOH (the amount is 0.15% of the weight of isooctyl alcohol), replace the air in the kettle with nitrogen 3 times, raise the temperature to 110°C, and dehydrate for 30 minutes under a vacuum environment below -0.09MPa. Then the temperature was raised to 120°C, ethylene oxide was slowly added dropwise (the molar ratio of ethylene oxide to isooctyl alcohol is 5:1), the ring-opening polymerization reaction was carried out under the conditions of a pressure of 0.2MPa and a temperature of 135°C. After the ethylene oxide is over, the aging reaction is 30min to obtain polyether; its general structural formula is as follows:

[0070]

[0071] R is isooctyl alcohol (EXXAL TM 8) The part where the hydroxyl group is removed, m=5, n=0.

[0072] Determine the hydroxyl value [I(OH)(mg / g)] of the synthesized polyether according to the method of GB / T 7383-2007, and use the formu...

Embodiment 3

[0081] 1. Preparation of polyether:

[0082] In the pressure reactor, add 100 parts of isooctyl alcohol (6-methyl-1-heptanol) and NaOCH 3 (The dosage is 0.25% of the weight of isooctyl alcohol), replace the air in the kettle with nitrogen 3 times, raise the temperature to 110°C, and dehydrate for 30 min under a vacuum environment below -0.09MPa. Then the temperature was raised to 120°C, ethylene oxide was slowly added dropwise (the molar ratio of ethylene oxide to isooctyl alcohol was 10:1), and the ring-opening polymerization reaction was carried out under the conditions of a pressure of 0.3MPa and a temperature of 135°C, and the addition After the ethylene oxide is over, the aging reaction is 30min; propylene oxide is slowly added dropwise (the molar ratio of propylene oxide to isooctyl alcohol is 2:1), and the ring-opening polymerization reaction is carried out at a pressure of 0.3MPa and a temperature of 135℃ After the dropwise addition of propylene oxide, the aging reaction ...

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
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses silicon-modified polyether, and a preparation method and application thereof. The preparation method comprises the following steps: (1) subjecting polyether and organic base tomixing and a reaction at 80 to 140 DEG C under anoxic conditions so as to obtain a mixture; and (2) cooling the mixture and then subjecting the mixture and halogenated alkyl trimethylsilane to mixingand a reaction at 60 to 120 DEG C, wherein a feeding mol ratio of halogenated alkyl trimethylsilane to polyether is (1.0-1.4): 1. The preparation method is simple; the prepared silicon-modified polyether is easily dissolvable in water, rapid in penetration, low in foaming and excellent in foam inhibition and defoaming, can be stably stored in an environment with a pH value of 5.0 to 9.0 for a long time, and is applicable to preparation of pre-treatment agents for a variety of fabrics; and the silicon-modified polyether is also applicable as a penetrating agent to fields like textiles, papermaking, printing ink and pesticides, or as a low-foam surfactant to fields like household cleaning and industrial cleaning.

Description

Technical field [0001] The invention relates to a silicon modified polyether and a preparation method and application thereof. Background technique [0002] Penetrant is a kind of surface active agent that can make liquid penetrate into a certain solid substance quickly and evenly. It is widely used in many fields such as textile, paper making, ink and pesticide. For example, in textile printing and dyeing production, penetrants have a wide range of uses such as desizing, scouring, bleaching, wetting or dispersing of dyes, dyeing, sizing, and resin finishing. [0003] Classified by ionic type, penetrants are generally divided into non-ionic penetrants, anionic penetrants, compound penetrants, etc. Amphoteric and cationic penetrants are rarely used. Among them, although the permeability of anionic penetrants is good, they have strong foaming properties; although the foaming properties of non-ionic penetrants (such as isooctanol polyoxyethylene ether) are lower than the anionic ones...

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
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/336C07F7/08C11D1/82D06M15/647
CPCC08G65/336C08G2650/04C08G2650/58C11D1/82D06M15/647
Inventor 翟立杰何志强方洇时巍平
Owner SHANGHAI DONGDA CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap