Defoaming agent composition for oil in water type emulsion

An oil-in-water emulsion and defoamer technology, applied in the directions of liquid degassing, foam dispersion/prevention, chemical instruments and methods, etc., can solve problems such as insufficient viscosity stability, and achieve excellent defoaming effect and good time stability. sexual effect

Active Publication Date: 2006-06-07
KURITA WATER INDUSTRIES LTD
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Problems solved by technology

However, it has become clear that even with this defoamer, th...

Method used

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  • Defoaming agent composition for oil in water type emulsion

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Experimental program
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Effect test

Embodiment 1

[0045] 20 parts by weight of C18-22 fatty alcohol (manufactured by SASOL Corporation, phenenol 1822), 4 parts by weight of solid paraffin (manufactured by KANTO Chemical Co., Ltd., melting point: 68-70° C.), 6 parts by weight of glycerin oleate Tryester (manufactured by Fuji Petroleum Co., Ltd., Highol) and primary alcohol liquid solution of branched chain alkyl with about 11 carbon atoms (made by Kao company; EMULGEN 1135S-70, HLB: 17.9; concentration: 70% by weight) were mixed together and melted to form a mixture. When the molten mixture was stirred at 73° C. with a turbine blade at a peripheral speed of 5.2 m / s, 68.5 parts by weight of water heated to 73° C. was added, and a phase change was performed by emulsification. After adding 0.1 part by weight of wellan gum (Sansho Corporation; K1 containing C376), the resulting mixture was cooled from 73°C to 30°C over 18 hours to obtain an oil-in-water emulsion defoamer composition.

[0046] In the defoaming test, the amount of ...

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Abstract

PROBLEM TO BE SOLVED: To provide an oil-in-water type emulsion defoaming agent composition having an excellent defoaming effect, having excellent storage stability with respect to compounding which can not ensure sufficient storage stability even if an ethylene oxide adduct of a secondary alcohol as an emulsifier is used and not almost thickened during storage.

SOLUTION: The oil-in-water type emulsion defoaming agent composition contains (A) an oil phase component containing a 12-30C higher aliphatic alcohol and (B) a 2-4C alkylene oxide adduct of a primary alcohol having a branched alkyl group.

COPYRIGHT: (C)2006,JPO&NCIPI

Description

technical field [0001] The invention relates to an oil-in-water emulsion defoamer composition. More particularly, the present invention relates to an oil-in-water emulsion antifoaming agent composition which exhibits an excellent antifoaming effect and hardly increases in viscosity during storage. Background technique [0002] So far, oil-in-water emulsion defoamers have been widely used as defoamers in various production processes and wastewater treatment processes, such as paper manufacturing processes. A composition containing a higher alcohol component is considered to be an oil-in-water emulsion defoamer showing outstanding effects (Patent Document 1). However, this antifoaming agent has a disadvantage in that the antifoaming agent solidifies into a creamy substance due to a significant increase in viscosity during storage, and the handling property deteriorates considerably. In order to overcome this drawback, the present inventors develop...

Claims

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Application Information

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IPC IPC(8): B01D19/04
CPCB01D19/0404
Inventor 园田雄二石田敏雄
Owner KURITA WATER INDUSTRIES LTD
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