Nonionic organosilicon surfactant and preparation method thereof

A surfactant and silicone technology, applied in chemical instruments and methods, transportation and packaging, dissolution, etc., can solve problems such as high primary hydroxyl end-capping rate, low secondary hydroxyl end-capping rate, and complex polyether end-capping process , to achieve the effect of easy-to-obtain raw materials and mild reaction conditions

Active Publication Date: 2014-03-26
南京美思德新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But in general, the end-capping process of polyether is complicated, the primary...

Method used

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  • Nonionic organosilicon surfactant and preparation method thereof
  • Nonionic organosilicon surfactant and preparation method thereof
  • Nonionic organosilicon surfactant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A) Add 8.0g of methanol, 165g of ethylene oxide and 58g of propylene oxide into the reactor, and react for 4 hours in the presence of 1.1g of KOH catalyst, pressure ≤ 0.4MPa, and reaction temperature of 110°C to obtain monofunctional polymer Ether (I);

[0034] B) 8.0g of acrylic acid and 103g of the above-mentioned monofunctional polyether (I) were reacted at 210°C for 3 hours under the condition of 0.1% sulfuric acid catalyst to obtain a double bond-containing polyether ester (II);

[0035]C) React octamethylcyclotetrasiloxane, hydrogen-containing silicone oil and tetramethyldisiloxane under the action of sulfuric acid at 80°C for 5 hours to obtain polysiloxane (III), in which octamethylcyclotetrasiloxane The molar ratio between oxane, hydrogen-containing silicone oil (1.58% hydrogen content) and tetramethyldisiloxane is 10:0.11:1;

[0036] D) Add 120g of polyether ester (II) and 67g of polysiloxane (III) obtained by the above two-step reaction into the reactor, heat...

Embodiment 2

[0041] A) Add 46g of ethanol and 792g of ethylene oxide into the reactor, and react for 4 hours in the presence of 4.0g of KOH catalyst, pressure ≤ 0.4MPa, and reaction temperature of 110°C to obtain monofunctional polyether (I);

[0042] B) 40.0g of oleic acid and 120g of the above-mentioned monofunctional polyether (I) were reacted at 210°C for 3 hours under the condition of 0.1% monobutyltin oxide catalyst to obtain the polyether ester (II) containing double bonds;

[0043] C) React octamethylcyclotetrasiloxane, hydrogen-containing silicone oil and hexamethyldisiloxane under the action of sulfuric acid at 80°C for 5 hours to obtain polysiloxane (III), in which octamethylcyclotetrasiloxane The molar ratio between oxane, hydrogen-containing silicone oil (1.59% hydrogen content) and hexamethyldisiloxane is 8:0.11:1;

[0044] D) Add 112g of polyether ester (II) and 68g of polysiloxane (III) obtained by the above two-step reaction into the reactor, heat up to 60-120°C for 7 hour...

Embodiment 3

[0049] A) Add 9.8g of n-butanol, 330g of ethylene oxide, and 96g of propylene oxide into the reactor, and react for 4 hours in the presence of 1.5g of KOH catalyst, pressure ≤ 0.4MPa, and reaction temperature of 110°C to obtain monofunctional Polyether (I);

[0050] B) 20.0g of 10-undecylenic acid methyl ester and 265g of the above monofunctional polyether (I) were reacted at 200°C for 3 hours under the condition of 0.1% dibutyltin oxide catalyst to obtain a double bond-containing polyether ester (II);

[0051] C) React octamethylcyclotetrasiloxane and tetramethyldisiloxane under the action of sulfuric acid at 80°C for 5 hours to obtain polysiloxane (III), in which octamethylcyclotetrasiloxane and tetramethyldisiloxane The mol ratio between methyldisiloxane is 5:1;

[0052] D) Add 282g of polyether ester (II) and 80g of polysiloxane (III) obtained from the above two-step reaction into the reactor, heat it up to 60-120°C under normal pressure with 20ppm Pt catalyst and 70g of...

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Abstract

The invention discloses a nonionic organosilicon surfactant. By means of the surfactant, the distance between siloxane and a hydrophilic group is lengthened, and the hydrolysis resistance of siloxane can be effectively improved. The nonionic organosilicon surfactant has the structure of a structural formula I as follows: in the structural formula I, m ranges from 1 to 100, and n ranges from 0 to 20; R represents mono-functionality polyether ester with a structure as follows: in the structure of mono-functionality polyether ester, R1 represents CH3CH2, CH3CH2CH2, CH(CH3)2 or CH3CH2CH2CH2; R2 represents an alkyl part of alpha-gadoleic acid or unsaturated fatty acid; and x ranges from 20 to 120, and y ranges from 0 to 75.

Description

technical field [0001] The invention relates to a surfactant and a preparation method thereof, more specifically to a nonionic silicone surfactant and a preparation method thereof. Background technique [0002] Surfactant is a substance that can greatly reduce the surface tension (or interfacial tension) of a solvent when added in a small amount, and change the interfacial state of the system, thereby producing wetting, emulsification, foaming, and solubilization. A series of functions to meet the requirements of practical applications. Silicone surfactants with unique properties are a rising star in the field of surfactants. The hydrophobic group of the silicone surface active material is composed of an alkylsiloxane main chain, and its hydrophobic performance is better than that of a carbon chain. agent with stronger surface activity. At present, with the in-depth development of this type of material and the continuous expansion of its application fields, the use of sil...

Claims

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Application Information

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IPC IPC(8): B01F17/54B01F17/42C08G81/00C08G65/332C08G65/28C08G77/38C08G77/12C09K23/54C09K23/42
Inventor 孙宇罗振扬唐雄峰
Owner 南京美思德新材料有限公司
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