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Preparation method of industrial defoaming agent

A kind of defoamer, industrial technology, applied in the field of preparation of industrial defoamer, can solve the problems of complex production process, poor use effect, inconvenient use, etc.

Inactive Publication Date: 2006-01-18
温木盛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of these defoamers has certain limitations, and there are disadvantages such as complex production process, expensive price or inconvenient use, especially in papermaking, sugar and other industries.

Method used

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  • Preparation method of industrial defoaming agent
  • Preparation method of industrial defoaming agent
  • Preparation method of industrial defoaming agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take a 250ml three-necked flask, install a stirring, heating device, and a water separator, weigh 138g (1.5mol) of glycerin and add it to the three-necked flask, stir and heat up to 100°C, add 1.5g of catalyst, heat up to 230°C, and react for two hours , to obtain about 115g of slightly yellow polyglycerol product.

Embodiment 2

[0029] Take the reaction device as an example 1. Weigh 184g (2mol) of glycerol, stir and heat up to about 100°C, add 4g of catalyst, continue to heat up to 230°C, and react for four hours to obtain about 150g of light yellow polyglycerol product.

Embodiment 3

[0031] Get a 250ml three-neck flask, install a stirring and heating device, get 120g of the polyglycerol product obtained in Example 1, heat up to 120°C, add stearic acid 80g (0.25mol) and catalyzer 2g, heat up to 200°C and stir for three hours to obtain about 160g product, the appearance is a brownish black waxy solid, emulsified in hot water, the defoaming time is 28 seconds, and the foam suppression time is greater than 5 minutes (syrup for foaming liquid).

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Abstract

The preparation method for industrial defoaming agent belongs to organic chemical industry field. First polymerize the glycerin to polyglycerol with polymerization degree of 2-10 under activator, add glycerin fatty acid ester or fatty acid for determined mass rate to process ester interchange and obtain the product. It is simple in technique, has good defoaming and foam inhibiting effect, gets raw material easily and fits to many techniques, such as paper making, sugar refining and fermentation.

Description

technical field [0001] The invention relates to a preparation method of an industrial defoamer. The prepared defoamer is suitable for defoaming and foam suppression in papermaking, printing and dyeing, fermentation and sugar production processes. Background technique [0002] In the process of papermaking, printing and dyeing, fermentation and sugar refining, a large amount of foam is often produced, which affects the smooth progress of the process. In order to ensure production, it is necessary to use defoamers to eliminate or reduce foam. [0003] At present, there are many kinds of defoamers, mainly oils, polyethers, polysiloxanes and sulfonated oils. However, the application of these defoamers has certain limitations, and there are disadvantages such as complex production process, high price, or inconvenient use, especially in papermaking, sugar and other industries. Contents of the invention [0004] The purpose of the present invention is to provide a kind of prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/04
Inventor 温木盛
Owner 温木盛
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