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Defoaming agent

A technology of defoaming agent and auxiliary defoaming agent, used in the field of foam suppression and defoaming, can solve the problems of difficulty in defoaming and foam suppression, complex components, etc. The effect of the anti-foaming effect

Inactive Publication Date: 2003-07-02
BC P INC CHINA NAT PETROLEUM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the rubber and plastics industry, when it comes to mixing, pouring, flowing, filtering, degassing and other issues of mortar, because there are many kinds of surfactants in the system, a large amount of foam will be generated. Both foaming and foam suppression pose certain difficulties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Get 23.4 parts by mass of triethanolamine, 48.5 parts by mass of liquid paraffin, 4.1 parts by mass of oleic acid and 12.3 parts by mass of triethanolamine octadecanoate, heat up to 65°C, add 6.8 parts by mass of calcium stearate and 1.2 parts by mass of octyl Alcohol mixed with antifoaming agent, 3.3 parts by mass of emulsifier OP and 0.4 part of Tween-60 were added to mix as a dispersant, and then mixed with water and stirred for 5.0 hours to obtain a white emulsion, which is the product of the present invention.

Embodiment 2

[0017] Take 12.8 parts by mass of diethanolamine, 45.0 parts by mass of liquid paraffin, 22.5 parts by mass of hexadecanoic acid and 8.0 parts by mass of triethanolamine oleate, heat up to 75°C, add 5 parts by mass of propylene glycol and 2 parts by mass of ethyl acetate Mix the defoamer, add 4.7 parts by mass of Span-80 as a dispersant, add and mix and stir for 7.5 hours to obtain a white emulsion, which is the product of the present invention.

Embodiment 3

[0019] Take 8.4 parts by mass of triethanolamine, 53.7 parts by mass of refined mineral oil, 10.3 parts by mass of octadecanoic acid and 14.7 parts by mass of palmitic acid amine ester, heat up to 80 ° C, add 7.6 parts by mass of octanol to help defoaming agent, then add 3.2 parts by mass of Span-60 and 2.1 parts of Tween-80 to mix as a dispersant, then add water and mix and stir for 5.0 hours to obtain a white emulsion which is the product of the present invention.

[0020] Table 1 shows the comparison of defoaming time with different foaming liquids and different defoamers at different doses.

[0021] Table 1 Comparison of defoamer defoaming time test data between the defoamer of the present invention and foreign similar defoamers * * : Dosage unit is weight percentage, and table 2 is the same. ** : It is a product of Kao Corporation in Japan, a hydrocarbonated oil emulsion type.

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PUM

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Abstract

A defoaming agent for anionic or non-ionic foaming agent used in production of rubber and plastics is prepared from hydrocarbonylated oil 40-60 wt portions, C4-C8 alcohol amine 3-29 portions, C10-C18 fatty acid 2-30 portions, alcohol amine ester of C10-C18 fatty acid 3-15 portions, codefoaming agent 5-15 portions, and disperser 3-8 portions through emulsifying with water. Its advantages are high defoaming speed and strong power on suppressing foams.

Description

technical field [0001] The invention relates to a defoamer, which is especially suitable for defoaming and foam suppression in the rubber and plastic industry. Background technique [0002] At present, there are various defoamers at home and abroad. Generally speaking, defoamers can be mainly divided into several categories: lower alcohols, silicones, mineral oils, and organic polar compounds. According to specific uses and performance requirements, in many cases, these A series of substances can also be compounded and synergized to produce a new defoamer with stronger defoaming ability. Defoamers are widely used in papermaking, cleaning, printing and dyeing, polymerization, fermentation and other industries. In the rubber and plastics industry, when it comes to mixing, pouring, flowing, filtering, degassing and other issues of mortar, because there are many kinds of surfactants in the system, a large amount of foam will be generated. Both foaming and foam suppression pos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/04
Inventor 王福善王琳陈勇田中涛林万新史京晨张崇华
Owner BC P INC CHINA NAT PETROLEUM CORP
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