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Self-emulsifying defoaming composition

A self-emulsifying and compositional technology, applied in chemical/physical processes, chemical instruments and methods, dissolution, etc., can solve the problems of accelerated process, instability, expensive processing equipment, etc., to increase production efficiency, production process and use The effect of simple equipment and convenient industrial production

Active Publication Date: 2010-07-21
JIANGSU SAIOUXINYUE DEFOAMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method usually used in the industry is to heat and impregnate silica particles in polydimethylsiloxane, and at the same time vacuum or add a small amount of amine catalyst to speed up the process. The processing equipment is relatively expensive and unstable during processing. factor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In terms of mass fraction, 25 parts of silicon dioxide particle powder (Germany Wacker H20) was added to 16 parts of polymer microsphere emulsion (Rohm and Haas Company of the United States) whose shell was formed by methacrylic acid core and polystyrene, 80 parts Stir and mix evenly at ℃ for 5 hours to form a mixed system; add 55 parts of trimethylsiloxy polydimethylsiloxane (purchased by Japan Toyo Ink Co., Ltd.) into the above mixed system, stir at 100°C for 2 hours, cool The mixture was obtained at room temperature; 4.0 parts of sodium lauryl sulfate (Shandong Wanda Chemical Co., Ltd.) was added to the above mixture and mixed for 20 minutes at room temperature, and then flowed out of the sealed package through the outlet.

Embodiment 2

[0024] In terms of mass fraction, 3 parts of silicon dioxide particle powder (R974 of Wacker Company of Germany) was added to 25 parts of polymer microsphere emulsions (Rohm and Haas Company of the United States) whose shell was formed by methacrylic acid core and polystyrene, 90 parts ℃ and stirred for 4 hours to form a mixed system; 70.5 parts of methyl hydrogen siloxane copolymer (Shaoxing County Yunuo Organic Silicon Material Co., Ltd.) was added to the above mixed system, stirred at 100 ℃ for 2 hours, cooled to room temperature to obtain Mixture; add 1.5 parts of sodium octadecanoate to the above mixture, mix at room temperature for 20 minutes, and flow out of the sealed package through the outlet.

Embodiment 3

[0026] In terms of mass fraction, 10 parts of silica particle powder (R106 from Evonik, USA) was added to 5 parts of polymer microsphere emulsion (TCR2 from Sunrise Company, Japan) whose shell was methacrylic acid core and polystyrene, at 100°C Stir and mix for 3 hours to form a mixed system; add 84.8 parts of polydimethylsiloxane copolymer (Shanghai HP Chemical Co., Ltd. DC200) to the above mixed system, stir at 100°C for 2 hours, and cool to room temperature to obtain a mixture; Add 0.2 parts of polyoxyethylene lauryl ether (Shanghai Zhixin Chemical Co., Ltd.) to the above mixture, mix at room temperature for 25 minutes, and flow out of the sealed package through the outlet.

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PUM

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Abstract

The invention discloses a self-emulsifying defoaming composition, which comprises the following components in percentage by weight: 46-91.8% of modified polysiloxane, 3-25% of silicon dioxide granule, 5-25% of dispersing agent and 0.2-4.0% of emulsifier. Each component of the composition can be uniformly mixed without undergoing a high temperature impregnation stage, and the composition still has the exchange anti-foaming performance in a high temperature alkaline environment, and is applicable to the processes of pulping, pigment dispersing, coating, film forming and the like during paper manufacturing.

Description

technical field [0001] The invention relates to a defoaming composition, in particular to a self-emulsifying defoaming composition. Background technique [0002] In the process of pulp production and paper forming, the severe air bubbles generated by the fiber material during the stirring process will cause the performance of paper such as porosity, surface smoothness, flexibility, etc. to decline, and also reduce the work of pumps, stirring machinery, and filter screens efficiency, a defoamer must be added. According to different defoaming substances, it can be divided into polyether type, organosiloxane type, long carbon chain alcohol type, and mineral oil type. Among them, organosiloxane type defoamers have the advantages of low addition ratio, defoaming and antifoaming properties. It has the characteristics of fast foaming speed and good chemical stability, and has been widely favored in the paper industry. [0003] Inorganic siloxane defoamers are usually added with i...

Claims

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Application Information

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IPC IPC(8): B01F17/54C09K23/54
Inventor 杨柏忠
Owner JIANGSU SAIOUXINYUE DEFOAMER
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