Organic silicon defoaming agent and preparation method thereof

A technology of silicone defoamer and emulsifier, which is applied in separation methods, chemical instruments and methods, foam dispersion/prevention, etc., and can solve problems affecting product quality and use, poor defoaming performance, and reduced production capacity. , to achieve the effect of low cost, increased viscosity and increased stability

Inactive Publication Date: 2016-04-20
QINGDAO UNIV
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN103074784 proposes a composite silicone defoamer with starch as a stabilizer, which increases the stability of the product and can prevent the occurrence of coagulation and demulsification, but due to the large amount of stabilizer, the defoaming Performance deterioration; Chinese patent CN104225965 proposes an emulsion-type silicone defoamer using high-boiling silicone oil as one of the raw materials, which reduces production costs and provides a reasonable treatment channel for the by-product high-boiler treatment of organic silicon monomers; Polyvinyl alcohol (PVA) is a thickener, but it will p

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The process of preparing the organosilicon defoamer in this embodiment is:

[0015] (1). Preparation of the main defoamer: In the existing reaction device with heating and stirring functions, add 3 parts of silicon dioxide solid powder by mass, and slowly add 100 parts of mass simethicone under stirring, React at a temperature of about 180°C for 3 hours to obtain a main defoamer (silicone paste) with good performance, and cool the main defoamer to about 80°C for later use;

[0016] (2). Preparation of defoamer: add distilled water accounting for 49% of the total mass of the final product into the existing reaction device with heating and stirring functions and heat it to 80°C, then add 2% dodecylsulfonic acid in turn Sodium, 2.5% tributyl phosphate, 0.8% carboxymethyl cellulose sodium salt 800-1200 (CMC) and 2.2% AEO-9, add 43.5% main defoamer after complete dissolution, keep warm and Stir at about 2000r / min to fully emulsify for 50 minutes, then stop stirring and cool...

Embodiment 3

[0021] The process of preparing the organosilicon defoamer in this embodiment is:

[0022] (1). Preparation of the main defoamer: In the existing reaction device with heating and stirring functions, add 3 parts of silicon dioxide solid powder by mass, and slowly add 100 parts of mass simethicone under stirring, React at a temperature of about 180°C for 3 hours to obtain a main defoamer (silicone paste) with good performance, and cool the main defoamer to about 80°C for later use;

[0023] (2).Preparation of defoamer: Add distilled water accounting for 50% of the total mass of the final product into the existing reaction device with heating and stirring functions and heat it to 80°C, then add 1% dodecylbenzenesulfonate in sequence sodium phosphate, 3% tributyl phosphate and 0.8% carboxymethyl cellulose sodium salt 800~1200 (CMC), add 45.2% main defoamer after complete dissolution, keep warm and stir at about 2000r / min After fully emulsifying for 30 minutes, stop stirring and c...

Embodiment 4

[0025] The process of preparing the organosilicon defoamer in this embodiment is:

[0026] (1). Preparation of the main defoamer: In the existing reaction device with heating and stirring functions, add 4 parts of silicon dioxide solid powder by mass, and slowly add 100 parts of mass simethicone under stirring, React at a temperature of about 180°C for 3 hours to obtain a main defoamer (silicone paste) with good performance, and cool the main defoamer to about 80°C for later use;

[0027] (2).Preparation of defoamer: add distilled water accounting for 52% of the total mass of the final product into the existing reaction device with heating and stirring functions and heat it to 80°C, then add 3% dodecylbenzenesulfonate in sequence sodium phosphate, 1% tributyl phosphate, 0.5% carboxymethylcellulose sodium salt 800-1200 (CMC) and 3% AEO-9, add 40.5% main defoamer after complete dissolution, after heat preservation Stir at about 2000r / min to fully emulsify for 40 minutes, then s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the technical field of a defoaming agent and preparation of the defoaming agent, and relates to a composite organic silicon defoaming agent and a preparation method of the composite organic silicon defoaming agent. The organic silicon defoaming agent is prepared from the following ingredients in percentage by weight: 48 percent to 54 percent of distilled water, 1.1 percent to 2.48 percent of silicon dioxide, 38 percent to 48.5 percent of simethicone, 1 percent to 3 percent of emulsifying agents, 1 percent to 6 percent of assistants for emulsifying agents and 0.5 percent to 1 percent of stabilizing agents, and the total weight percentage is 100 percent. During the preparation, a main defoaming agent is prepared from the silicon dioxide and the simethicone; then, the distilled water, the assistants for emulsifying agents, the stabilizing agents and the stabilizing agents are sequentially and proportionally added into a reaction device; after the materials are completely dissolved, the main defoaming agent is added for emulsification, and the organic silicon defoaming agent is obtained. The defoaming agent has the advantages that the preparation process is simple; the raw materials can be easily obtained; the cost is low; the prepared organic silicon defoaming agent can maintain good defoaming and foam inhibiting performance; meanwhile, the characteristics of high efficiency, stability, alkali resistance, heat resistance and the like are realized.

Description

Technical field: [0001] The invention belongs to the technical field of defoamers and their preparation, and relates to a compound type silicone defoamer and a preparation method thereof. Background technique: [0002] Since Quincke, a German experimental physicist, first proposed to use chemical methods to defoam, it has undergone four updates so far. The first generation of defoamers are organic substances such as mineral oil, fatty acids and fatty acid esters, fatty amides, and lower alcohols. The ability is poor; the second-generation defoamer is a polyether defoamer, mainly including linear polyether and polyether or end-group esterified polyether derivatives with alcohol and ammonia as initiators. Strong, it is the leading defoamer used in the fermentation industry at present, but the foam breaking rate is low, and a certain amount of defoamer needs to be added. In order to meet the defoaming requirements and changing operating conditions, a silicone defoamer has been...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01D19/04
CPCB01D19/0409B01D19/0418B01D19/0422B01D19/0454
Inventor 聂兆广胡艳芳林伯群姜丛慧郑艺华邢雅成
Owner QINGDAO UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap