Defoaming agent composition

A composition and defoamer technology, applied in the direction of foam dispersion/prevention, chemical/physical process, dissolution, etc., can solve problems such as poor dispersion performance, parking accidents, opaque coating film, etc., to achieve good stability and prevent Effect of oxidative deterioration and saving the amount of defoamer

Inactive Publication Date: 2007-10-31
SHENZHEN OCEANPOWER NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Their defect is that they have poor compatibility with glue, poor dispersion performance, and without exception contain polysiloxane (silicone oil) components with poor compatibility, which often lead to parking accidents, and the appearance of the product is relatively poor. Poor, opaque film, etc.

Method used

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  • Defoaming agent composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 1g of dry-treated fumed silica RS-812S and add it to a four-necked flask filled with 30 grams of 12# mineral oil. Install a thermometer and a reflux condenser on the neck of the four-necked flask, heat it up, and wait for the temperature to stabilize at 70 At about ℃, add 1g of zinc stearate weighed into the four-necked flask, replace with nitrogen, start stirring, control the stirring speed at about 70-90rpm, continue to heat up to 150-180℃ and stir for 2 hours, vacuumize and introduce Protective gas, the purpose of passing protective gas is to reduce the color of the defoamer product, continue to mature for 8 to 10 hours, and cool down.

[0033] Add the above product into a stainless steel container, add 50g of silicone polyether surfactant, 2.0g of antifungal agent DEHYGANT LFM, 2.5g of antirust agent synthro-COR C E660 B, etc. into the above mixture, Disperse for 30-60 minutes at a rotational speed of 1000-3000 rpm, stop stirring and discharge to obtain a defo...

Embodiment 2

[0035] Weigh 2g of dried hydrogenated castor oil and add it into a four-necked flask. Install a thermometer, a condenser tube and other accessories on the four-necked flask, and slowly add 20g of 6# mineral oil and 65g of organosilicon polymer into the four-necked flask. Ether surfactant, first adjust the speed to 70-80rpm, disperse for 30 minutes, then adjust the speed to 1000-1500rpm and disperse for 30 minutes, add 3.0g antifungal agent Alex F251, 2.0g antirust agent synthro-COR C E141, disperse evenly and discharge .

Embodiment 3

[0037] Weigh 15g of 30# and 10g of 6# mineral oil in a stainless steel cup, start stirring at 70-90rpm and heat up to 50°C, add 1g of dry-treated powdered hydroxymethylcellulose HEC, disperse evenly and continue to add silicone polyether surface active Add 35g of antifungal agent, 20g of deionized water, increase the speed to 1500-2000rpm, disperse for 30 minutes, add 2.5g of antifungal agent Alex F252, 3.0g of antirust agent synthro-COR C E141, mix evenly and cool down.

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PUM

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Abstract

The defoamer comprises 35-65 portions of organic surfactant, 20-30 portions of mineral oil, 1-2 portions of hydrophobing modifier agent, anti-fungus agent 2-3 portions, and antirust agent 2-3 portions. The small dosage of the defoamer avoids the damage to the product, with the hydrophobing element being able to adjust the viscosity of the agent, piercing the foam elastic thin film to speed up the defoaming, with the hydrophobing being able to regulate the pH value, preventing the aging of elements like mineral oil, with various diffusion and spreading ability of viscosity agent, being able to save the defoaming dosage, stable in product, without defects like water diversion and stratification.

Description

【Technical field】 [0001] The invention relates to a defoamer composition and a preparation method thereof, more specifically, the invention relates to a novel polyorganosiloxane modified adhesive defoaming agent containing pigments, fillers or no pigments and fillers with water as the carrier agent, and its preparation method. 【Background technique】 [0002] The existence of foam in the industrial production process hinders production and product application. Foam must be eliminated. Usually, defoamers are added to achieve the purpose. Therefore, defoamers must have the functions of defoaming and foam suppression. Defoaming is mainly based on the Ross theory, and the defoaming agent must be "insoluble" to the foaming solution and can be easily dispersed in the foaming solution. A good defoamer can not only break the foam quickly, but also maintain no foam for a certain period of time. [0003] In order to overcome the defects of adhesives, especially adhesives with more vi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/54B01D19/04C09K23/54
Inventor 梅铭何唯平
Owner SHENZHEN OCEANPOWER NEW MATERIALS TECH
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