Unlock instant, AI-driven research and patent intelligence for your innovation.

Polymer emulsion type defoaming agent and preparation method thereof

A technology of polymer emulsion and defoamer, applied in the direction of defoamer, separation method, chemical instrument and method, etc., can solve the problem of silicon precipitation and residue

Pending Publication Date: 2020-08-04
JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD +1
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The emergence of this type of defoamer can solve the problem of silicon precipitation and residue in traditional silicone defoamers, but there is still a lot of room for improvement in the antifoaming performance of defoamers prepared by current technologies

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polymer emulsion type defoaming agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Preparation of active substances: Add 10g of hydroxyethyl acrylate, 19g of isooctyl acrylate, and 1g of catalyst 2,2'-azobis(2-methylpropionitrile) into the flask, stir for 30min, and mix the above mixture Add CH containing 70g allyl polyether dropwise 2 =CHCH 2 (OCH 2 CH 2 )(OCH 2 CHCH 3 ) 100 In the reactor, the reaction temperature is 60°C, and the dropwise reaction time is 8h;

[0024] (2) Mix 10g of active material, 8g of hydrophobic silica (with a specific surface area of ​​150m 2 / g), 1g of polyacrylamide, and 2g of polyacrylate were placed in a high-speed stirrer at a stirring speed of 1500rpm, and 79g of water was slowly dropped into it. After stirring for 120min, a polymer emulsion defoamer was obtained, denoted as A.

Embodiment 2

[0026] (1) Preparation of active substances: Add 70g of ethyl acrylate and 1g of catalyst tert-butyl peroxidized 2-ethylhexylate into the flask, stir for 90min, drop the above mixture into 29g of allyl polyether CH 2 =CHCH 2 (OCH 2 CH 2 ) 10 (OCH 2 CHCH 3 ) 10 In the reactor, the reaction temperature is 100°C, and the dropwise reaction time is 2h;

[0027] (2) 35g of active material, 3g of titanium dioxide (specific surface area 300m 2 / g), 0.5g of polyacrylamide was placed in a high-speed stirrer at a stirring speed of 2500rpm, and 61.5g of water was slowly dropped into it. After stirring for 30 minutes, a polymer emulsion defoamer was obtained, which was designated as B.

Embodiment 3

[0029] (1) Preparation of active substances: Add 10g lauryl acrylate, 35g butyl acrylate, and 0.5g catalyst benzoyl peroxide into the flask, stir for 60min, drop the above mixture into 54.5g allyl polyether CH 2 =CHCH 2 (OCH 2 CH 2 ) 5 (OCH 2 CHCH 3 ) 50 In the reactor, the reaction temperature is 80°C, and the dropwise reaction time is 5h;

[0030] (2) Mix 34g of active substance, 2g of ethylenediamine bisstearic acid amide (with a specific surface area of ​​200 m 2 / g), 3g aluminum stearate (specific surface area is 300 m 2 / g), 1g xanthan gum was placed in a high-speed stirrer, the stirring speed was 2000rpm, slowly dripped into 60g of water, and after stirring for 80min, a polymer emulsion defoamer was obtained, denoted as C.

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

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention provides a polymer emulsion type defoaming agent and a preparation method thereof. The polymer emulsion type defoaming agent comprises an active matter, filler particles, water and a thickening agent, wherein the active matter is composed of acrylate, allyl polyether and a catalyst, the allyl polyether containing a hydrophilic functional group is introduced into an acrylate polymer chain segment, and the introduction of the allyl polyether in the synthesis process solves the environmental protection problem caused by the use of harmful solvents such as toluene and the like in a traditional acrylate synthesis process; the double bond addition reaction forms a polymer macromolecule with a self-emulsifying function, and the polymer macromolecule can be emulsified in water to form emulsions with different particle size ranges; the polymer emulsion can be self-emulsified to form an emulsion, so that a series of problems of oil floating, precipitation, demulsification and the like caused by the fact that some emulsifiers are used in a traditional organic silicon emulsion type defoaming agent are solved.

Description

technical field [0001] The invention relates to a polymer emulsion type defoamer and a preparation method thereof. The polymer emulsion is an important fine chemical additive. Therefore, the invention belongs to the technical field of fine chemical preparations. Background technique [0002] Papermaking is a key industry in the production of the national economy. In the paper industry, various surfactants, such as defoamers, are often used. Foam in most industrial production will bring great harm, such as reducing the working efficiency of machines, delaying labor time, affecting the quality of final products, etc. The method of eliminating harmful foam generally adopts the method of adding defoamer. Depending on the defoaming composition, the defoaming agent is divided into several main types such as non-silicon type and silicone type. Compared with other defoamers, silicone-based defoamers have stable chemical properties, stable chemical resistance, less side effects, a...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L51/08C08L33/26C08L33/04C08L1/28C08K7/26C08K3/22C08K5/098C08K5/20C08F283/06C08F220/20C08F220/18C08F220/14D21H21/12B01D19/04
CPCC08J3/03C08F283/065C08K7/26C08K3/22C08K5/098C08K5/20D21H21/12B01D19/0404C08J2351/08C08J2433/26C08J2433/04C08J2401/28C08K2003/2241C08K2201/006C08K2003/222C08K2003/2227C08F220/20C08F220/1808C08F220/1802C08F220/1812C08F220/1804C08F220/14C08F220/1818
Inventor 李安宁董飞杨有忠黄伟曹添安东尼·K·达西
Owner JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD