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Organosilicon composition and preparation method thereof

A technology of organosilicon and composition, which is applied in the field of fine chemical preparations and can solve problems such as poor stability

Active Publication Date: 2018-12-18
南京瑞思化学技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, this type of defoamer composition is composed of polysiloxane defoaming composition, silicon polyether and polyether. CN201010211308.5 introduces that polysiloxane is added in the process of synthesizing silicon polyether, and then Then raise the temperature and keep warm to solve this problem by increasing the viscosity of silicon polyether, and the obtained product is still not stable.

Method used

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  • Organosilicon composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Preparation of active substance A

[0061] A-1: prepared according to the method of example 1 of US4639489A;

[0062] A-2: prepared according to the method of Example 1 of US2009234029A1;

[0063] A-3: Prepared according to the method of Example 1 of US6521586B1.

Embodiment 2

[0065] Selection of B of hydroxyl polysiloxane

[0066] B-1: Polysiloxane with terminal hydroxyl groups, the dynamic viscosity at 25°C is 100,000mPa·s;

[0067] B-2: Polysiloxane with terminal hydroxyl groups, the dynamic viscosity at 25°C is 10mPa·s;

[0068] B-3: Polysiloxane with terminal hydroxyl groups, the dynamic viscosity at 25°C is 20,000mPa·s;

[0069] B-4: Hydroxyl-terminated polysiloxane with a dynamic viscosity of 100mPa·s at 25°C;

[0070] B-5: Hydroxyl-terminated polysiloxane having a dynamic viscosity of 50,000 mPa·s at 25°C.

Embodiment 3

[0072] Selection of Polyether Modified Polysiloxane C with Spatial Structure

[0073] C-1: The value of each subscript in the molecular structure: polyether G middle r = 12; s = 38; R 2 = hydrogen atom; f =2; g =80; h =20; i =60, the dynamic viscosity of the obtained spatially structured polyether-modified polysiloxane is 15,000mPa·s at 25°C;

[0074] C-2: The value of each subscript in the molecular structure: polyether G middle r = 1; s = 75; R 2 = methyl; f =1; g = 2; h =4; i =90, the dynamic viscosity of the obtained spatially structured polyether-modified polysiloxane is 110mPa·s at 25°C;

[0075] C-3: The value of each subscript in the molecular structure: polyether G middle r = 70; s = 30; R 2 = isobutyl; f =3; g =100; h =90; i =20, the dynamic viscosity of the obtained spatially structured polyether-modified polysiloxane is 47,000mPa·s at 25°C;

[0076] C-4: The value of each subscript in the molecular structure: polyether G middle ...

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Abstract

The invention relates to a preparation method of an organosilicon composition. The composition is prepared from an organosilicon active substance, hydroxylpolysiloxane, spatial structure polyether modified polysiloxane, linear polyether modified polysiloxane, polyether and a cosolvent. The synergistic winding and wrapping effects of the spatial structure polyether modified polysiloxane and the linear polyether modified polysiloxane make the organosilicon active substance stably exist in a polyether system for a long term. The obtained organosilicon composition can be applied to defoaming agents, waterproof agents, water repellents, wetting agents and other assistants according to the difference of the active substance.

Description

technical field [0001] The invention relates to a method for preparing a uniform and stable mixture of polysiloxane and polyether, belonging to the technical field of fine chemical preparations. Background technique [0002] Defoamer is one of the indispensable additives in the chemical industry. According to the different active ingredients, defoamers can be divided into several categories such as silicone, polyether, fatty alcohol, mineral oil, etc. Silicone defoamer is a well-known high-efficiency defoamer for eliminating surfactants and is widely used in textiles. Industry, pulp and paper, sewage treatment, industrial cleaning, daily chemical, oil exploration and other fields. [0003] The compound defoamer of polyether and polysiloxane is also an important product of defoamer. By adjusting the amount of polysiloxane and polyether, a series of products can be obtained to meet the needs of different application fields. Generally, polysiloxane and polyether can be prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/04C08G77/46
CPCB01D19/0409C08G77/46
Inventor 不公告发明人
Owner 南京瑞思化学技术有限公司
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