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Method for preparing mineral oil defoamer

A technology of mineral oil and antifoaming agent, applied in the direction of foam dispersion/prevention, can solve the problems of the defoaming performance not meeting the requirements, the harm of post-production treatment, the side effects of surfactants, etc. Large-scale production, excellent performance

Active Publication Date: 2013-03-06
SUZHOU BONA CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, water-based products must introduce hydrophilic groups or surfactants to achieve the hydrophilic effect. The use of a large number of surfactants will inevitably bring about unavoidable side effects, that is, the generation of foam, and the existence of foam will affect the production and use of products. And post-processing, etc. have brought serious harm
Therefore, water-based products have higher defoaming requirements than oil-based products. In order to meet this requirement, more and more defoamers have come out, but the defoaming performance of most products cannot meet the requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Raw material formula: trimethylolpropane tristearate: 300g, S-60 emulsifier: 70g, AEO-7 emulsifier: 35g, R972: 20g, No. 15 white oil: 500g, No. 26 white oil: 700g, Oleic acid: 30g;

[0025] A kind of preparation method of mineral oil defoamer, it comprises the steps:

[0026] Add 500g of No. 15 white oil and 700g of No. 26 white oil into a 2000ml 4-necked flask, and then add 300g of trimethylolpropane tristearate, 12g of white carbon black R972, 70g of S-60 emulsifier, 35g of AEO-7 emulsifier; after adding, stir at 300rpm for 0.5 hours until the system is basically uniformly dispersed, then start to heat up to 80°C, when the system is basically transparent, keep it warm for 1.5 hours; cool down to below 45°C, then transfer to sand mill Machine, grind (1-2mm zirconium beads) and disperse for 1 hour; the appearance is light yellow, the viscosity is 380cpa, the defoaming effect is shown in the table below, the product is qualified, and the mineral oil defoamer is obtained...

Embodiment 2

[0028] Raw material formula: glycerin tristearate: 350g, S-80 emulsifier: 80g, AEO-9 emulsifier: 30g, R972: 20g, No. 15 white oil: 700g, No. 26 white oil: 800g, oleic acid: 25g

[0029] A kind of preparation method of mineral oil defoamer, it comprises the steps:

[0030] Put 700g of No. 15 white oil and 800g of No. 26 white oil into a 2000ml 4-neck flask, and then add 350g of glycerin tristearate, 20g of white carbon black R972, 80g of S-80 emulsifier, 30g of AEO-9 emulsification agent, 25g oleic acid; after adding, stir at 200rpm for 0.5 hours until the system is basically uniformly dispersed, then start to heat up to 100°C. Machine, grind (1-2mm zirconium beads) and disperse for 2 hours; the appearance is light yellow, the viscosity is 600cpa, the defoaming effect is shown in the table below, the product is qualified, and the mineral oil defoamer is obtained after discharge.

Embodiment 3

[0032] Raw material formula: pentaerythritol tetrastearate: 150g, dipentaerythritol heptastearate: 100g, S-80 emulsifier: 80g, NP-8 emulsifier: 40g, R972: 36g, No. 15 white oil: 900g, 26 White oil: 900g

[0033] A kind of preparation method of mineral oil defoamer, it comprises the steps:

[0034] Add 900g No. 15 white oil and 900g No. 26 white oil into a 2000ml 4-necked flask, and then add 150g pentaerythritol tetrastearate, 100g dipentaerythritol heptastearate, 36 g R972, 80g S-80 emulsification under stirring at 90rpm agent, 40g NP-8 emulsifier; after adding, stir at 400rpm for 0.5 hours until the system is basically uniformly dispersed, then start to heat up to 120°C, when the system is basically transparent, keep it warm for 1 hour; cool down to below 45°C, turn to Put it into a sand mill, grind (1-2mm zirconium beads) and disperse for 1.5 hours; the appearance is light yellow, the viscosity is 450cpa, and the defoaming effect is shown in the table below, the product is ...

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PUM

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Abstract

The invention discloses a method for preparing a mineral oil defoamer, which comprises the following steps: adding mineral oil defoamer in a reactor, and adding polylol stearic acid ester, white carbon black and an emulsifier in turn with stirring; stirring till the system is basically distributed uniformly, heating till the system is basically transparent, and keeping temperature for 1 to 2 hours; cooling to below 45 DEG C, transferring into a sand mill, and grinding ( by 1 to 2-millimeter zirconium beads) and dispersing for 1 to 2 hours; and discharging after the defoamer is tested to be qualified and thus, obtaining the mineral oil defoamer. In the method for preparing the mineral oil defoamer, which is disclosed by the method, when a proper polylol or modified polylol variety is selected, the prepared mineral oil defoamer has desirable dispersing and defoaming effects; the prepared mineral oil defoamer is novel aqueous defoamer and has the characteristics of environmental protection, safety, high performance and the like; the mineral oil defoamer is the main product developed independently by the company, and is a new variety of product on China's market; and the manufacturing process is simple and can realize large-scale production easily.

Description

technical field [0001] The invention belongs to the field of fine chemicals, and in particular relates to a preparation method of a mineral oil defoamer. Background technique [0002] Due to the aggravation of environmental protection issues, people's awareness of environmental protection is also increasing, and the auxiliaries required by industries such as textiles, leather, packaging, coatings, and inks are becoming more and more deionized and water-based. However, water-based products must introduce hydrophilic groups or surfactants to achieve the hydrophilic effect. The use of a large number of surfactants will inevitably bring about unavoidable side effects, that is, the generation of foam, and the existence of foam will affect the production and use of products. And post-processing, etc. have brought serious harm. Therefore, water-based products have higher defoaming requirements than oil-based products. In order to meet this requirement, more and more defoamers have...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D19/04
Inventor 李维格张春福
Owner SUZHOU BONA CHEM TECH