Silicon-modified polyether, and preparation method and application thereof

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

Active Publication Date: 2018-06-15
SHANGHAI DONGDA CHEM
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  • 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. 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

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  • Silicon-modified polyether, and preparation method and application thereof
  • Silicon-modified polyether, and preparation method and application thereof
  • Silicon-modified polyether, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 1. Preparation of polyether:

[0057] In the pressure reactor, 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 for 3 times, and heat up 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 was carried out at a pressure of 0.25 MPa and a temperature of 130°C. After the ethylene oxide is finished, the aging reaction is 30 minutes, and the polyether is obtained; its general structural formula is as follows:

[0058]

[0059] Wherein, R-O- is the dehydrogenated part of 6-methyl-1-heptanol, m=3, n=0;

[0060] Measure the hydroxyl value [I(OH)(mg / g)] of the synthesized polyether according to the method of GB / T 7383-2007, and use the formula (1): (56.1×10...

Embodiment 2

[0069]1. Preparation of polyether:

[0070] In the pressure reactor, add 100 parts of isooctyl alcohol (EXXAL TM 8) and NaOH (the amount of which is 0.15% of the weight of isooctyl alcohol), replace the air in the kettle with nitrogen for 3 times, heat up to 110°C, and dehydrate for 30min under 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 5:1), and the ring-opening polymerization was carried out at a pressure of 0.2 MPa and a temperature of 135°C. After the ethylene oxide is finished, the aging reaction is 30 minutes, and the polyether is obtained; its general structural formula is as follows:

[0071]

[0072] Among them, R-O- is isooctyl alcohol (EXXAL TM 8) The part dehydrogenated, m=5, n=0.

[0073] Measure the hydroxyl value [I(OH)(mg / g)] of the synthesized polyether according to the method of GB / T 7383-2007, and use the formula (...

Embodiment 3

[0082] 1. Preparation of polyether:

[0083] In a pressure reactor, add 100 parts of isooctyl alcohol (6-methyl-1-heptanol) and NaOCH 3 (The consumption is 0.25% of the weight of isooctyl alcohol), replace the air in the kettle with nitrogen for 3 times, heat up to 110° C., and dehydrate for 30 minutes under a vacuum environment below −0.09 MPa. 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 10:1), and the ring-opening polymerization was carried out at a pressure of 0.3 MPa and a temperature of 135°C. After the ethylene oxide is finished, the aging reaction is 30min; slowly add propylene oxide (the molar ratio of propylene oxide to isooctyl alcohol is 2:1), and carry out the ring-opening polymerization reaction at a pressure of 0.3MPa and a temperature of 135°C After the dropwise addition of propylene oxide, the aging reaction was performed for 30 minutes to obtain the polyether...

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PUM

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Abstract

The invention discloses silicon-modified polyether, and a preparation method and application thereof. The silicon-modified polyether has number-average molecular weight of 200 to 2000 g/mol. In the formula, which is described in the specification, of the silicon-modified polyether, R is a straight-chain or branched-chain C6-18 alkyl group; R' is a straight-chain or branched-chain C1-10 alkylene group or a C6-10 arylene group; m is in a range of 1 to 20; n is in a range of 0 to 20; and m and n are both integers. The preparation method is simple; the prepared silicon-modified polyether is easilydissolvable 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 isapplicable 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, printingink 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 its preparation method and application. Background technique [0002] Penetrants are a class of surfactants that allow liquids to penetrate quickly and evenly into a solid substance, and are widely used in many fields such as textiles, papermaking, inks, and pesticides. For example, in textile printing and dyeing production, penetrating agent has a wide range of uses such as desizing, scouring, bleaching, wetting or dispersing of dyes, dyeing, sizing, and resin finishing. [0003] According to the ionic classification, 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 penetrant is good, it has strong foaming property; although the foaming property of nonionic penetrant (such as isooctyl alcohol polyoxyethylene ether) is lower than that of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/336C07F7/08C11D1/82D06M15/647
CPCC08G65/336C08G2650/04C08G2650/58C11D1/82D06M15/647
Inventor 董建国何志强方洇林丽
Owner SHANGHAI DONGDA CHEM
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