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Preparation method of organic silicon defoamer

A technology of silicone defoamer and production method, which is applied in the direction of defoamer, etc., and can solve problems such as ineffective effect and large amount of defoamer

Inactive Publication Date: 2014-12-03
顾咏亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Defoamer is a commonly used chemical in the field of papermaking. The current defoamer has the problem of large dosage and ineffective effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] The invention provides a method for preparing an organosilicon defoamer, comprising the following raw materials in parts by weight: 30 parts of simethicone oil, 28 parts of silicone grease, 15 parts of polyoxyethylene stearate, trihard sorbitan 12 parts of fatty acid ester, 120 parts of water; also include the following steps: heating 1 / 3 of the above 120 parts of water to 60°C, adding sorbitan tristearate and polyoxyethylene stearate under stirring , after melting evenly, add silicone grease and simethicone under stirring, add the remaining water while maintaining 60°C, and continue stirring for 40 minutes to obtain a defoamer.

[0009] The invention provides a method for making an organosilicon defoamer. The prepared defoamer is suitable for papermaking and other industries such as automobile antifreeze. Adding 20g of defoamer to 1 ton of pulp can achieve good results .

Embodiment 2

[0011] The invention provides a method for making an organosilicon defoamer, which comprises the following raw materials in parts by weight: 40 parts of simethicone oil, 38 parts of silicone grease, 18 parts of polyoxyethylene stearate, trihard sorbitan 18 parts of fatty acid ester, 143 parts of water; also include the following steps: heating 1 / 3 of the above 143 parts of water to 68°C, adding sorbitan tristearate and polyoxyethylene stearate under stirring After melting evenly, add silicone grease and simethicone oil under stirring, add the remaining water while maintaining 68°C, and continue stirring for 40 minutes to obtain a defoamer.

[0012] The invention provides a method for making an organosilicon defoamer. The prepared defoamer is suitable for papermaking and other industries such as automobile antifreeze. Adding 20g of defoamer to 1 ton of pulp can achieve good results .

Embodiment 3

[0014] The invention provides a method for making an organosilicon defoamer, which comprises the following raw materials in parts by weight: 35 parts of dimethyl silicone oil, 30 parts of silicone grease, 16 parts of polyoxyethylene stearate, trihard sorbitan 16 parts of fatty acid ester, 135 parts of water; also include the following steps: heating 1 / 3 of the above 135 parts of water to 65°C, adding sorbitan tristearate and polyoxyethylene stearate under stirring , after melting evenly, add silicone grease and simethicone under stirring, add the remaining water while maintaining 65°C, and continue stirring for 40 minutes to prepare a defoamer.

[0015] The invention provides a method for making an organosilicon defoamer. The prepared defoamer is suitable for papermaking and other industries such as automobile antifreeze. Adding 20g of defoamer to 1 ton of pulp can achieve good results . .

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PUM

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Abstract

The invention provides a preparation method of an organic silicon defoamer. The organic silicon defoamer contains the following raw materials in parts by weight: 30-40 parts of dimethyl silicon oil, 28-38 parts of silicone grease, 15-18 parts of polyoxyethylene stearate, 12-18 parts of sorbitan tristearate, and 120-143 parts of water. The preparation method comprises the following steps: heating one third of 120-143 parts of water to 60-68 DEG C; adding sorbitan tristearate and polyoxyethylene stearate under a stirring condition; after uniform melting, adding silicone grease and dimethyl silicon oil under a stirring condition; adding the rest water at the temperature of 60-68 DEG C; and stirring for 40 minutes, thereby obtaining the defoamer. The defoamer is applicable to the field of papermaking and other industries of automobile anti-freezing liquid and the like, and a good effect can be achieved just by adding 20g of defoamer into 1t of paper pulp.

Description

technical field [0001] The invention relates to a papermaking auxiliary agent, in particular to a method for preparing an organic silicon defoamer. Background technique [0002] Defoamers are commonly used chemicals in the field of papermaking. The current defoamers have the problem of large dosage and ineffective effects. Contents of the invention [0003] The purpose of the present invention is to provide a method for making a silicone defoamer, which can solve one or more problems in the prior art. [0004] The invention provides a method for preparing a silicone defoamer, which comprises the following raw materials in parts by weight: 30-40 parts of dimethyl silicone oil, 28-38 parts of silicone grease, and 15-18 parts of polyoxyethylene stearate , 12-18 parts of sorbitan tristearate, 120-143 parts of water; also includes the following steps: heating 1 / 3 of the above-mentioned 120-143 parts of water to 60-68 ° C, adding sorbitol under stirring Anhydride tristearate a...

Claims

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Application Information

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IPC IPC(8): D21H21/12
Inventor 顾咏亮
Owner 顾咏亮
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