CN106492707A - Surface activator composition - Google Patents
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- CN106492707A CN106492707A CN201610783410.7A CN201610783410A CN106492707A CN 106492707 A CN106492707 A CN 106492707A CN 201610783410 A CN201610783410 A CN 201610783410A CN 106492707 A CN106492707 A CN 106492707A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
- C09K23/017—Mixtures of compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
- B01D19/0413—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance compounds containing N-atoms
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
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Abstract
The invention provides a kind of surface activator composition, comprising：Amino-polyether organosilicon, silicon cream, emulsifying agent, thickener and water, wherein relative to surface activator composition described in every 25g, the amount of amino-polyether organosilicon is 2 4g, the amount of silicon cream is 2 3g, and the amount of emulsifying agent is 0.1 2g, and the amount of thickener is 0.05 0.5g, the amount of water is 16 20g, and the silicon cream is prepared by fumed silica and dimethicone, the amount of fumed silica is 1 9g/100g silicon cream, and the amount of dimethicone is 91 99g/100g.The surface activator composition of the present invention can serve as defoamer, and breakdown of emulsion, floating oil, and the performance with acid-fast alkali-proof do not occur through heat stability testing.
Description
Technical field
The present invention relates to detergent applications, the surface activator composition more specifically with froth breaking effect.
Background technology
In industrial processes, excessive foam can cause serious problem, such as paper industry production, food processing to knit
Thing dyeing and finishing, medical foods are fermented, sewage disposal and crude oil processing etc..Therefore defoamer is widely used unwanted to eliminate
Foam.Medicine for some commercially produced products, such as mineral flotation agent, machine-washing agent, coating, dyspepsia and gaseous distention
Thing, defoamer are all requisite additives.Typical defoamer has oils, hydrophobic solid particles and both compoundings
Thing.Oils includes that mineral oil, silicone oil, fatty alcohol, aliphatic acid, alkyl ammonia, alkyl acyl ammonia, tricresyl phosphate fourth be cruel, thioether.Hydrophobicity is solid
Body particle includes particles of inorganic material (such as SiO2、Al2O3、TiO2, paraffin (such as magnesium stearate), polymer (such as polyamide, poly- third
Alkene) etc..
Froth breaking be foam stabilization exist inverse process, from the strict sense for, defoamer can be divided into foamicide and suppression
Infusion, Wasan and Christiano are defined as foam inhibitor：The solid particle being pre-dispersed in foam liquid system, oil droplet or
One solid-liquid of the oil drop of mixing.Therefore, the major function of foam inhibitor is to prevent the formation of excessive bubble.Comparatively speaking, foamicide
It is to be sprayed at oneself foam surface through being formed, main purpose is to induce rapid effect of breaking bubble (shock effect).It is worth mentioning
It is that, with the rupture of foam, foamicide is finally dispersed in foam liquid, is changed into foam inhibitor from foamicide..
Polyether silicones type defoamer is formed by connecting by the form of chemical bond by polyethers and organosilicon, and it combines poly-
, antifoam performance more preferably, becomes a kind of new efficient silicon systems froth breaking to the premium properties of two kinds of defoamers of ether and silicone oil
Together.The combination of chemical bond is pressed, two classes can be divided into, a class is bonded with Si-C；Another kind of bonded with Si-O-C.
As Si-O-C keys are susceptible to hydrolyze, and Si-C key good stabilities, it is not susceptible to hydrolyze, therefore the bonded forms of Si-C become
The main flow direction of synthesizing polyether organic silicon defoamer.Polyether silicones (sPE) contain one or more polyethers chain links, these chain links
Generally major part is the homopolymers or copolymer of PEO and PPOX.The structure of sPE has side chain type (polyethers chain link
It is grafted to the pectination type that formed on polysiloxanes side chain) and straight chain type (AB types, ABA type, (AB) N-shaped), it is close that wherein a represents polyethers
Water chain link, B represent polysiloxane hydrophobic chain link.By adjusting the ratio of EO/PO in polyethers chain link, can synthesize multiple with not
The copolymer of same HLB value (hydrophilic lipophilic balance).The structural formula of straight chain type and side chain type polyether silicones is as shown：
Used as a kind of novel surfactant of nontoxic, pollution-free, environmental protection, amino-polyether organosilicon is in many aspects
Have a wide range of applications, such as agricultural, daily use chemicals industry, textile industry, paper industry etc..Agriculturally, traditional agricultural chemicals adopts non-silicon
Class surfactant, is sprayed onto on plant, sprawls and wetting speed is slow, and many little space agricultural chemicals cannot permeate, therefore desinsection effect
Really poor.Add amino-polyether organosilicon in agricultural chemicals, surface tension can be significantly reduced, agricultural chemicals is spread in plant surface rapidly
Exhibition, wetting, infiltration, make agricultural chemicals play higher efficiency, effectively kill disease pest.In daily chemical industry, amino-polyether organosilicon is commonly used
In the daily necessitiess such as hair conditioner, skin care item, sunblock lotion, shampoo, mainly due to amino-polyether organosilicon have wetability strong,
Surface tension is low, soft, smooth, antistatic the advantages of.In textile industry, amino-polyether organosilicon is often used as textile finishing
Agent, the fabric after being processed, flexibility and antistatic behaviour are improved, and fabric face is more smooth, wrinkle resistance strengthens.Paper industry
On, amino-polyether organosilicon combines the advantage of amido silicon oil and polyether silicone oil, can give the good hydrophily of paper and moisture absorption
Property, strengthen the comfort level of napkin paper, toilet paper.In addition, amino-polyether organosilicon is in industries such as medical treatment, coating, electronic apparatus
Also there is potential applying value.Believe, with the continuous careful of research and in-depth, the application and development of amino-polyether organosilicon
Will more rapidly and extensively.Although amino-polyether organosilicon the aspect such as agricultural, daily use chemicals industry, textile industry, paper industry oneself
Be subject to very big favor, but the application report in terms of defoamer is seldom, and amino-polyether organic silicon type defoamer is with polyether silicone oil
Based on, and its structure is modified and is compounded, on the one hand, the advantage of polyether silicone oil is given full play to, emulsifying agent is can not only be used for
As active defoaming agent component, and can be compounded with each component well again.On the other hand, the introducing of amino, increased parent
Aqueous, and ionizable is positively charged, so as to preferably adjust emulsification and the antifoam performance of polyether silicone oil, makes defoamer performance
More excellent.In a word, the structure of polyether silicone oil is modified and is compounded, the diversified organosilicon of performance can be prepared, expanded
The range of application of organosilicon and saving production cost.
Content of the invention
For this purpose, inventor carries out positive research, as a result they are had found by compounded technology, and specific technique bar
Part, can be used for amino-polyether organosilicon in the surface activator composition with froth breaking effect.Particularly, the present invention intends logical
Cross polyetheramine is incorporated on organosilicon and prepare amino-polyether organosilicon, and be applied in defoaming agent composition.Will be poly-
Ether amines are introduced in organosilicon, i.e., simultaneously amino and polyether segment are incorporated on polysiloxane skeleton, are allowed to have silicone oil concurrently
With the advantage of two class defoamer of polyethers, while polyether silicone oil type defoamer again different from the past, many amino in molecular structure
Group, the introducing of amino polar group increased the hydrophily of final products, can improve the dispersiveness in water and be used for aqueous
The froth breaking of system, for facilitation is played in the emulsification of defoamer, overcomes the defect of the difficult emulsification of other defoamers, and this is for disappearing
The compounding and practical application of infusion has great importance.In addition, amino can ionize positively charged, for electronegative gas
There is vacuolar membrane good brokenly bubble effect can be used to produce wood plastics tray, shelf, floor etc., and especially floor, can be used for chemical cart
Between, durable in use.
Therefore, in an aspect, the invention provides a kind of surface activator composition, comprising：Amino-polyether is organic
Silicon, silicon cream, emulsifying agent, thickener and water, wherein relative to surface activator composition described in every 25g, amino-polyether organosilicon
Amount be 2-4g, the amount of silicon cream is 2-3g, and the amount of emulsifying agent is 0.1-2g, and the amount of thickener is 0.05-0.5g, and the amount of water is
16-20g, and the silicon cream is prepared by fumed silica and dimethicone, and the amount of fumed silica is
1-9g/100g silicon cream, the amount of dimethicone is 91-99g/100g.
Main active one of of the dimethicone as surface activator composition, preferably by itself and hydrophilic gas phase
Method silica stirs and evenly mixs prepared translucent silicon cream under high temperature nitrogen protection, and this is modified silica, and two
Methyl-silicone oil plays a part of surface hydrophobicity dressing agent to hydrophilic fumed silica.Subsequently silicon cream, amino-polyether are had
Machine silicon, thickener, emulsifying agent etc. are compounded, and the surface activator composition of froth breaking effect is obtained.The viscosity of dimethicone
Must be moderate, viscosity is too small, and antifoaming speed is fast, and the suds time shortens；Viscosity is excessive, and antifoaming speed is slack-off, and the suds time increases,
And high-viscosity dimethicone is difficult to emulsify, oil mark etc. is easily formed in product surface.Preferably, the viscosity of dimethicone
Select between 600-800mPa/s.For example, it is possible to silicone oil (m (H201-500): m (H201-1000)=1: 1) is selected, wherein
The viscosity of H201-500 is 500mPa/s, and the viscosity of H201-1000 is 1000mPa/s.
As described above, the amount of fumed silica is 1-9g/100g silicon cream, preferred 8-9g/100g silicon cream, that is, after compounding
Defoamer in white carbon mass fraction between 0.64=0.72%, antifoam performance reaches optimum state, hereafter antifoam performance
The increase of consumption is held essentially constant with the increase of silica content.When reason is mainly due to starting, with titanium dioxide
The consumption of silicon increases, and the dispersive property of dimethicone gradually strengthens, and antifoam performance is gradually lifted, when higher than 8-9g/100g silicon
During cream, due to the thickening power of silica, increase system viscosity, defoaming activity component dispersiveness weakens performance and no longer carries
Rise.
Preferably, the amino-polyether organosilicon is that the silicone oil that there is epoxy radicals by end passes through parent with mono amino polyetheramine
Prepared by core opening.
More particularly, amino-polyether organosilicon can be prepared using two-step method：Prepared in epoxy radicals silicone oil first
Then polyetheramine and epoxy radicals silicone oil are carried out nucleophilic ring opening addition reaction, obtain amino-polyether organosilicon target product by mesosome,
Reaction equation is as follows, and wherein nucleophilic ring opening addition is with epoxy-terminated silicone oil and mono amino polyetheramine：
For example, epoxy radicals silicone oil intermediate is with H2PtCl6/ PrOH leads to as catalyst, allyl glycidyl ether (AGE)
Cross hydrosilylation to be prepared.The preparation of amino-polyether organosilicon can be existed by epoxy radicals silicone oil intermediate and polyetheramine
It is prepared by nucleophilic ring opening addition reaction under conditions of alcohol solvent
Preferably, the end has the silicone oil of epoxy radicals as follows：
Wherein n be 6-100, and
The structure of the mono amino polyetheramine is as follows：
Wherein R is H or alkyl, and x/y is 1-19/3-9.
Preferably, emulsifying agent is selected from Span, tween, methyl glucoside sesquistearate, methyl glucoside polyoxy
Ethene (20) ether or its any combination.
Main active component one of of the dimethicone as amino-polyether organosilicon emulsion-type defoamer, how by its breast
Change, be the key issue for preparing emulsion type defoaming agent.Emulsification is mainly immiscible by two kinds by the strong stirring of mechanical force
Liquid in one of which be distributed in another liquid with small particle, one of which is referred to as dispersion phase, another kind of
Referred to as continuous phase.Due to the effect of shearing force in whipping process, the interfacial area of this two-phase is made to increase rapidly, so as to define temporarily
Stable emulsion.This kind of emulsion be unstable, due to the interfacial molecular between two-phase higher than the energy of interior molecules, meeting
Producing reduces the trend of energy automatically, so that both liquid are divided into two-layer again.Emulsifying agent can be in scattered particulate
Surface forms electric double layer and film etc., prevents particles agglomerate, enhances the stability of emulsification system.
Emulsifying agent must have low interfacial tension, and good surface-active is in addition in the preparation process of emulsion, newborn
The hydrophilic lipophilic balance (HLB) of agent is also considerable.Select in the emulsifying agent of dimethicone, it is preferred to use multiple
Mould assembly emulsifying agent, i.e., a kind of HLB value are higher, and another kind of HLB value is less.Mixed emulsifier can obtain efficient emulsibility
Can, better than using single emulsifier effect.It is preferred, therefore, that emulsifying agent is selected from methyl glucoside sesquistearate
Combination with methyl glucoside polyoxyethylene (20) ether.It is highly preferred that methyl glucoside sesquistearate and methyl Portugal
The mass ratio of polyglycoside polyoxyethylene (20) ether is 2-5: 1-3.
Preferably, thickener is selected from polyethylene glycol stearate diester, two oleic acid of methyl glucosamine polyoxyethylene (120) ether
Ester, cellulosic polymer or its any combination.It is furthermore preferred that the thickener is selected from hydroxy alkyl cellulose (HEC).HEC is easy
Be dissolved in water, white or pale yellow powder shape has certain heat endurance (less than 140 DEG C), boil and acid condition under do not sink
Form sediment, dissolubility and thickening property scope are wide, can coexist with other many surfactants, salt and some other water-soluble polymer,
It is the thickener of function admirable.
In one embodiment, surface activator composition of the invention can also include preservative.
The surface activator composition of the present invention can be prepared by emulsion process.Emulsification is mainly by the strength of mechanical force
One of which in two kinds of immiscible liquid is distributed in another liquid by stirring with small particle, one of which
Referred to as dispersion phase, another kind of is referred to as continuous phase.When water is continuous phase, and oil is dispersion phase, it is O/W types, otherwise is w/o type.This
Invention preferably prepares composition by phase conversion emulsifying.
The surface activator composition of the present invention can serve as defoamer, carry out antifoam performance ratio with commercially available defoamer
Compared with foam time is better than some silicone emulsion class defoamers (ND-130 and KM73) domestic and polyethergpolysiloxane class froth breaking
There is no breakdown of emulsion, floating oil in agent (BD-3037-15), the surface activator composition after heat stability testing, compounding, and
There is the performance of acid-fast alkali-proof.
Specific embodiment
Enforcement embodiment of the present invention explained below.However, the scope of the present invention is not limited to described embodiment party
Formula, as long as not damaging purport, can carry out various changes to the present invention.
The preparation of amino-polyether organosilicon
Is being furnished with logical nitrogen device, it is 1 with epoxy radicals mol ratio that amino is added in the three-neck flask of the 250mL of reflux condensing tube
: 1 epoxy radicals silicone oil and polyetheramine M-600, ethanol as solvent, W (ethanol) they are 25%-30%, are heated to 60 DEG C, after 2h-3h
Discharging, vacuum distillation remove solvent, obtain pale yellow transparent viscous liquid, 60 DEG C of vacuum drying chamber overnight, by epoxide number
Measure, calculate reaction conversion ratio.The product that polyetheramine and epoxy-terminated silicone oil nucleophilic ring opening addition are obtained is designated as E-M-600
(No. 1 defoamer).
The preparation method and its performance evaluation of amino-polyether organic silicon defoamer
The preparation of silicon cream
In the there-necked flask of 500mL, add dimethicone (m (H201-500): m (H201-1000)=1: 1) gentle
Phase method silica, leads to nitrogen protection, and strong stirring is warmed up to 160-170 DEG C, insulated and stirred 2-3h, wherein dimethicone:
Vapor phase method SiO2=(90-95): (10-5), cooling is obtained translucent silicon cream.
Combine experiment is operated
Weigh 3g amino-polyether organosilicons (E-M-600) and 2g silicon cream is added in 100mL there-necked flasks, be simultaneously introduced breast
Agent SS and SSE-20 each 0.45g and 0.225g, heat in water-bath and stir and be warming up to 60-70 DEG C, are incubated 1h, while weighing
0.125g thickeners HEC in 100mL beakers adds 19.2g deionized waters, is placed on magnetic stirring apparatus and is stirred, wait to increase
Thick dose is completely dissolved and is dispersed in water phase, is poured in constant pressure funnel, is then slowly dropped in oil phase, treats thickener
After aqueous solution completion of dropping, insulated and stirred 30min is cooled to room temperature, stirs 15min with emulsification pretreatment mixer, obtains white
Emulsion form compounding product (No. 2 defoamers).
The configuration of foam liquid
2.5g neopelexes are weighed in 500mL beakers, 200mL distilled water, stirring so as to completely molten is added
In Xie Shui, and be settled to scale with 1L volumetric flasks, shake up placement stand-by, the mass fraction of sodium dodecyl benzenylsulfonate is
0.25%.
Antifoaming performance experimental implementation and evaluation method
0.25% neopelex of 200mL being added in 1L graduated cylinders, leading to nitrogen thereto, flow is 3L/min,
When foam height reaches 1L scales, the defoamer of 0.2% (relative to the quality of foam liquid) is added thereto to, record foam disappears
The time of mistake, this are foam time；0.25% neopelex of 200mL is added in 1L graduated cylinders, is added thereto to
The defoamer of 0.2% (relative to the quality of foam liquid), leads to nitrogen thereto, and flow is 3L/min, records foam and reaches 1L
Required time during scale, this are the suds time.
With commercially available defoamer Performance comparision
Heat endurance and antifoam performance contrast experiment is carried out with No. 2 defoamers with several defoamers commercially available both at home and abroad, disappear
The addition of infusion for foam liquid quality 0.2%, experimental result is as shown in the table.
By upper table 3-11 just to find out, No. 1 froth breaking punishment (E-M-600 is dissolved in the Lip river liquid after water, without any other process),
Compared with defoamer both domestic and external, foam time is longer, and the suds time is short, and also has foam residual after froth breaking terminates；No. 2 disappear
After E-M-600 and silicon cream, emulsifying agent SS/SSE-20, thickener HEC are compounded by infusion, antifoaming performance obtains larger
Lifted, foam time disappears better than some silicone emulsion class defoamers (ND-130 and KM73) domestic and polyethergpolysiloxane class
Infusion (BD-3037-15), but compared with external polyether antifoam agent, foam time is longer；Suds suppressing properties and silicone emulsion class froth breaking
Agent (ND-130) is compared with polyethergpolysiloxane class defoamer (BD-3037-15), and the suds time is slightly inferior.By to city
Sell and homemade defoamer heat stability testing, No. 1 defoamer solution surface omits floating oil；There is no breakdown of emulsion, drift in No. 2 defoamers
Oil, good heat stability.
Claims (10)
1. a kind of surface activator composition, comprising：Amino-polyether organosilicon, silicon cream, emulsifying agent, thickener and water, wherein phase
For surface activator composition described in every 25g, the amount of amino-polyether organosilicon is 2-4g, and the amount of silicon cream is 2-3g, emulsifying agent
Amount be 0.1-2g, the amount of thickener is 0.05-0.5g, and the amount of water is 16-20g, and the silicon cream is by vapor phase method dioxy
Prepared by SiClx and dimethicone, the amount of fumed silica is 1-9g/100g silicon cream, and the amount of dimethicone is 91-
99g/100g.
2. surface activator composition according to claim 1, wherein described amino-polyether organosilicon is that had by end
The silicone oil of epoxy radicals is prepared by nucleophilic ring opening addition reaction with mono amino polyetheramine.
3. surface activator composition according to claim 2, wherein described end has the following institute of the silicone oil of epoxy radicals
Show：
Wherein n be 6-100, and
The structure of the mono amino polyetheramine is as follows：
Wherein R is H or alkyl, and x/y is 1-19/3-9.
4. surface activator composition according to claim 1, wherein described emulsifying agent are selected from Span, tween, methyl Portugal
Polyglycoside sesquistearate, methyl glucoside polyoxyethylene (20) ether or its any combination.
5. surface activator composition according to claim 1, wherein described thickener is selected from the double stearic acid of polyethylene glycol
Ester, methyl glucosamine polyoxyethylene (120) ether dioleate, cellulosic polymer or its any combination.
6. the surface activator composition according to claim 1-5, wherein described thickener are selected from hydroxy alkyl cellulose.
7. surface activator composition according to claim 4, wherein emulsifying agent are selected from methyl glucoside times semi-solid fat
Acid esters and the combination of methyl glucoside polyoxyethylene (20) ether.
8. surface activator composition according to claim 7, wherein methyl glucoside sesquistearate and methyl
The mass ratio of glucoside polyoxyethylene (20) ether is 2-5-1-3.
9. surface activator composition according to claim 1, the viscosity of wherein described dimethicone is 600-
800mPa/s.
10. surface activator composition according to claim 1, also includes preservative.
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| CN201610783410.7A CN106492707A (en) | 2016-08-31 | 2016-08-31 | Surface activator composition |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107936939A (en) * | 2017-11-02 | 2018-04-20 | 中国石油集团渤海钻探工程有限公司 | A kind of acidifying foam controller and preparation method thereof |
| CN108126373A (en) * | 2017-12-07 | 2018-06-08 | 常州帝君金属构件厂 | A kind of preparation method of high temperature resistant antifoaming agent |
| CN108842460A (en) * | 2018-06-26 | 2018-11-20 | 湖北新海鸿化工有限公司 | A kind of fabric post-treatment softening agent |
| CN109364535A (en) * | 2018-10-29 | 2019-02-22 | 薛向东 | A kind of high temperature resistant defoaming agent |
| CN109499105A (en) * | 2018-11-23 | 2019-03-22 | 中国石油集团渤海钻探工程有限公司 | Simethicone emulsion and preparation method thereof for fracturing outlet liquid defoaming |
| CN110201600A (en) * | 2019-05-29 | 2019-09-06 | 文水县是大高分子材料有限公司 | A kind of naphthalene sulfonate polymer anion surfactant preparation method |
| CN110229341A (en) * | 2019-05-31 | 2019-09-13 | 丽王化工(南通)有限公司 | A kind of organic silicon resin-based Non-ionic dispersant and preparation method thereof |
| WO2020232675A1 (en) * | 2019-05-22 | 2020-11-26 | Huntsman Petrochemical Llc | Amine compound with good hydrophilicity |
| CN115300947A (en) * | 2022-08-22 | 2022-11-08 | 山东师范大学实验厂有限公司 | Efficient defoaming agent for pesticide and preparation method thereof |
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2016
- 2016-08-31 CN CN201610783410.7A patent/CN106492707A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107936939A (en) * | 2017-11-02 | 2018-04-20 | 中国石油集团渤海钻探工程有限公司 | A kind of acidifying foam controller and preparation method thereof |
| CN108126373A (en) * | 2017-12-07 | 2018-06-08 | 常州帝君金属构件厂 | A kind of preparation method of high temperature resistant antifoaming agent |
| CN108126373B (en) * | 2017-12-07 | 2020-02-14 | 嘉兴沃特泰科环保科技股份有限公司 | Preparation method of high-temperature-resistant defoaming agent |
| CN108842460A (en) * | 2018-06-26 | 2018-11-20 | 湖北新海鸿化工有限公司 | A kind of fabric post-treatment softening agent |
| CN109364535A (en) * | 2018-10-29 | 2019-02-22 | 薛向东 | A kind of high temperature resistant defoaming agent |
| CN109499105A (en) * | 2018-11-23 | 2019-03-22 | 中国石油集团渤海钻探工程有限公司 | Simethicone emulsion and preparation method thereof for fracturing outlet liquid defoaming |
| WO2020232675A1 (en) * | 2019-05-22 | 2020-11-26 | Huntsman Petrochemical Llc | Amine compound with good hydrophilicity |
| CN110201600A (en) * | 2019-05-29 | 2019-09-06 | 文水县是大高分子材料有限公司 | A kind of naphthalene sulfonate polymer anion surfactant preparation method |
| CN110229341A (en) * | 2019-05-31 | 2019-09-13 | 丽王化工(南通)有限公司 | A kind of organic silicon resin-based Non-ionic dispersant and preparation method thereof |
| CN115300947A (en) * | 2022-08-22 | 2022-11-08 | 山东师范大学实验厂有限公司 | Efficient defoaming agent for pesticide and preparation method thereof |
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