CN111097197A - Preparation method of coating defoaming agent - Google Patents
Preparation method of coating defoaming agent Download PDFInfo
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- CN111097197A CN111097197A CN201811270556.7A CN201811270556A CN111097197A CN 111097197 A CN111097197 A CN 111097197A CN 201811270556 A CN201811270556 A CN 201811270556A CN 111097197 A CN111097197 A CN 111097197A
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- coating
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- uniformly stirring
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- 239000011248 coating agent Substances 0.000 title claims abstract description 35
- 238000000576 coating method Methods 0.000 title claims abstract description 35
- 239000002518 antifoaming agent Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000003756 stirring Methods 0.000 claims abstract description 22
- -1 polysiloxane Polymers 0.000 claims abstract description 18
- 239000013530 defoamer Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 10
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 10
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 9
- WCJXVMSVPLUBAG-UHFFFAOYSA-N N-ethyl-2-octadecylicosan-1-amine Chemical compound C(CCCCCCCCCCCCCCCCC)C(CNCC)CCCCCCCCCCCCCCCCCC WCJXVMSVPLUBAG-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 7
- 239000003899 bactericide agent Substances 0.000 claims abstract description 7
- 239000008367 deionised water Substances 0.000 claims abstract description 7
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 7
- 229910021485 fumed silica Inorganic materials 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 7
- HDMGAZBPFLDBCX-UHFFFAOYSA-M potassium;sulfooxy sulfate Chemical compound [K+].OS(=O)(=O)OOS([O-])(=O)=O HDMGAZBPFLDBCX-UHFFFAOYSA-M 0.000 claims abstract description 7
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims abstract description 7
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims abstract description 7
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims abstract description 7
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004094 surface-active agent Substances 0.000 claims abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000002562 thickening agent Substances 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 6
- 239000000194 fatty acid Substances 0.000 claims description 6
- 229930195729 fatty acid Natural products 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 4
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 4
- 229910001923 silver oxide Inorganic materials 0.000 claims description 4
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Substances [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 claims description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 3
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical group O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 229920003064 carboxyethyl cellulose Polymers 0.000 claims description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 3
- 235000011187 glycerol Nutrition 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- 229920000136 polysorbate Polymers 0.000 claims description 3
- 229950008882 polysorbate Drugs 0.000 claims description 3
- 239000000230 xanthan gum Substances 0.000 claims description 3
- 229920001285 xanthan gum Polymers 0.000 claims description 3
- 229940082509 xanthan gum Drugs 0.000 claims description 3
- 235000010493 xanthan gum Nutrition 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 4
- 238000000034 method Methods 0.000 claims 1
- 239000006260 foam Substances 0.000 abstract description 7
- 230000002401 inhibitory effect Effects 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 20
- 230000000694 effects Effects 0.000 description 4
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- B01D19/0409—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance compounds containing Si-atoms
-
- 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
-
- 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
- B01D19/0418—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance compounds containing P-atoms
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Toxicology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the technical field of defoaming agents, and particularly relates to a preparation method of a coating defoaming agent. A preparation method of a coating defoamer comprises the following steps: s1, mixing polysiloxane, high-carbon alcohol, fumed silica, tributyl phosphate, distearyl diethylamine and potassium hydrogen persulfate, and uniformly stirring to obtain solution A; s2, adding sodium hexametaphosphate, a surfactant and a thickening agent into deionized water, and uniformly stirring to obtain solution B; and S3, mixing the solution A and the solution B at the temperature of 60-70 ℃, heating to 90-100 ℃, uniformly stirring, adding hydrophobic silicon dioxide and a bactericide, and keeping the temperature for 30-40 min to obtain the coating defoamer. The coating defoamer prepared by the invention has good defoaming and foam inhibiting properties, is stable in quality after being stored for a long time, and has good use value.
Description
Technical Field
The invention belongs to the technical field of defoaming agents, and particularly relates to a preparation method of a coating defoaming agent.
Background
In the fields of oil and gas exploitation, pulping and papermaking, textile printing and dyeing, biological fermentation, sewage treatment, coating processing, building industry and the like, the foam generated by stirring can cause the problems of capacity reduction, reaction period extension, raw material waste and the like. The addition of the defoaming agent can eliminate the foam in a short time. The defoaming agent can be divided into mineral oil defoaming agent, polyether defoaming agent, organic silicon defoaming agent and the like. The mineral oil defoaming agent can only be used under the conditions of small liquid shearing force and mild foaming capacity of the contained surfactant, and has poor capability of eliminating compact foam.
The polyether defoamer can only play a defoaming role when the temperature of a foaming system exceeds a cloud point temperature. In recent years, silicone defoaming agents have attracted much attention because of their high defoaming efficiency, small amount and no physiological toxicity, but silicone has poor dispersibility, is difficult to emulsify, tends to aggregate into oil droplets having an excessively large particle size and no defoaming activity, and pure silicone oil has no defoaming effect on foams in aqueous solutions.
Disclosure of Invention
The invention provides a preparation method of a coating defoaming agent for solving the problems.
The invention is realized by adopting the following technical scheme:
a preparation method of a coating defoamer comprises the following steps:
s1, mixing polysiloxane, high-carbon alcohol, fumed silica, tributyl phosphate, distearyl diethylamine and potassium hydrogen persulfate, and uniformly stirring to obtain solution A;
s2, adding sodium hexametaphosphate, a surfactant and a thickening agent into deionized water, and uniformly stirring to obtain solution B;
and S3, mixing the solution A and the solution B at the temperature of 60-70 ℃, heating to 90-100 ℃, uniformly stirring, adding hydrophobic silicon dioxide and a bactericide, and keeping the temperature for 30-40 min to obtain the coating defoamer.
In a preferable scheme, in the step S3, after the temperature is raised to 90-100 ℃ and the mixture is uniformly stirred, the hydrophobic silicon dioxide and the bactericide are added, and a coating antifoaming agent is also added.
Preferably, the polysiloxane is polydimethylsiloxane, polymethyltriethoxysilane or polymethyltrimethoxysilane.
In a preferred embodiment, the surfactant is sorbitan fatty acid, polysorbate, polyoxyethylene monostearate or glycerin fatty acid ester.
Preferably, the thickener is carboxymethyl cellulose, carboxyethyl cellulose, xanthan gum or polyacrylate.
In a preferred scheme, the bactericide is glutaraldehyde or nano silver oxide.
The invention has the beneficial effects that:
1. the coating defoamer prepared by the invention ensures the overall defoaming and foam inhibiting effects of the defoamer, the added auxiliary agent component can effectively promote the effects of the main active components to be exerted, and simultaneously can improve the conditions of invalidation such as viscosity increase and crosslinking tendency and the like caused by overall long-term storage, and the stability of the quality during storage and use is improved. Finally, under the combined action of all the components, the coating defoamer prepared by the invention has good defoaming and foam inhibiting properties, is stable in quality after being stored for a long time and has good use value.
2. The coating defoamer disclosed by the invention is added with substances such as hydrophobic silicon dioxide, nano silver oxide and nano zinc oxide, and the substances are mutually matched, so that the coating defoamer can be used as a defoaming core and has a quick defoaming effect.
Detailed Description
The technical solutions in the examples will be clearly and completely described below. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1
The coating defoamer is prepared by the following steps in parts by mass:
s1, mixing 20 parts of polydimethylsiloxane, 8 parts of higher alcohols, 4 parts of fumed silica, 5 parts of tributyl phosphate, 2 parts of distearyl diethylamine and 0.5 part of potassium hydrogen persulfate, and uniformly stirring to obtain solution A;
s2, adding 3 parts of sodium hexametaphosphate, 2 parts of sorbitan fatty acid and 3 parts of carboxymethyl cellulose into 85 parts of deionized water, and uniformly stirring to obtain solution B;
and S3, mixing the solution A and the solution B at 70 ℃, heating to 100 ℃, uniformly stirring, adding 15 parts of hydrophobic silicon dioxide, and keeping the temperature for 30min to obtain the coating defoamer.
Example 2
The coating defoamer is prepared by the following steps in parts by mass:
s1, mixing 30 parts of polymethyltriethoxysilane, 5 parts of higher alcohol, 5 parts of fumed silica, 8 parts of tributyl phosphate, 0.5 part of distearyl diethylamine and 2 parts of potassium hydrogen persulfate, and uniformly stirring to obtain solution A;
s2, adding 3 parts of sodium hexametaphosphate, 5 parts of polysorbate and 1.5 parts of carboxyethyl cellulose into 70 parts of deionized water, and uniformly stirring to obtain solution B;
and S3, mixing the solution A and the solution B at 60 ℃, heating to 90 ℃, uniformly stirring, adding 30 parts of hydrophobic silicon dioxide and 3 parts of a coating defoaming agent, and keeping the temperature for 40min to obtain the coating defoaming agent.
Example 3
The coating defoamer is prepared by the following steps in parts by mass:
s1, mixing 40 parts of polymethyl trimethoxy silane, 15 parts of higher alcohol, 5 parts of fumed silica, 6 parts of tributyl phosphate, 1 part of distearyl diethylamine and 1 part of potassium hydrogen persulfate, and uniformly stirring to prepare solution A;
s2, adding 2 parts of sodium hexametaphosphate, 3 parts of glycerin fatty acid ester and 2 parts of xanthan gum into 75 parts of deionized water, and uniformly stirring to obtain liquid B;
and S3, mixing the solution A and the solution B at 65 ℃, heating to 95 ℃, uniformly stirring, adding 20 parts of hydrophobic silicon dioxide, 2 parts of a coating defoaming agent and 2 parts of glutaraldehyde, and keeping the temperature for 35min to obtain the coating defoaming agent.
Example 4
The coating defoamer is prepared by the following steps in parts by mass:
s1, mixing 30 parts of polydimethylsiloxane, 10 parts of higher alcohols, 4 parts of fumed silica, 7 parts of tributyl phosphate, 1.5 parts of distearyl diethylamine and 1.5 parts of potassium hydrogen persulfate, and uniformly stirring to obtain solution A;
s2, adding 2.5 parts of sodium hexametaphosphate, 4 parts of polyoxyethylene monostearate and 2.5 parts of polyacrylate into 80 parts of deionized water, and uniformly stirring to obtain solution B;
and S3, mixing the solution A and the solution B at 65 ℃, heating to 95 ℃, uniformly stirring, adding 25 parts of hydrophobic silicon dioxide, 4 parts of a coating defoaming agent and 3 parts of nano silver oxide, and keeping the temperature for 35min to obtain the coating defoaming agent.
Claims (6)
1. The preparation method of the coating defoaming agent is characterized by comprising the following steps:
s1, mixing polysiloxane, high-carbon alcohol, fumed silica, tributyl phosphate, distearyl diethylamine and potassium hydrogen persulfate, and uniformly stirring to obtain solution A;
s2, adding sodium hexametaphosphate, a surfactant and a thickening agent into deionized water, and uniformly stirring to obtain solution B;
and S3, mixing the solution A and the solution B at the temperature of 60-70 ℃, heating to 90-100 ℃, uniformly stirring, adding hydrophobic silicon dioxide and a bactericide, and keeping the temperature for 30-40 min to obtain the coating defoamer.
2. The method for preparing the coating antifoaming agent according to claim 1, wherein in step S3, the coating antifoaming agent is added in addition to the hydrophobic silica and the bactericide after the temperature is raised to 90-100 ℃ and the mixture is stirred uniformly.
3. The method for producing a coating antifoaming agent according to claim 1, characterized in that: the polysiloxane is selected from polydimethylsiloxane, polymethyltriethoxysilane or polymethyltrimethoxysilane.
4. The method for producing a coating antifoaming agent according to claim 1, characterized in that: the surfactant is sorbitan fatty acid, polysorbate, polyoxyethylene monostearate or glycerin fatty acid ester.
5. The method for producing a coating antifoaming agent according to claim 1, characterized in that: the thickening agent is carboxymethyl cellulose, carboxyethyl cellulose, xanthan gum or polyacrylate.
6. The method for producing a coating antifoaming agent according to claim 1, characterized in that: the bactericide is glutaraldehyde or nano silver oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811270556.7A CN111097197A (en) | 2018-10-29 | 2018-10-29 | Preparation method of coating defoaming agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811270556.7A CN111097197A (en) | 2018-10-29 | 2018-10-29 | Preparation method of coating defoaming agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111097197A true CN111097197A (en) | 2020-05-05 |
Family
ID=70419576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811270556.7A Pending CN111097197A (en) | 2018-10-29 | 2018-10-29 | Preparation method of coating defoaming agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111097197A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115400464A (en) * | 2022-09-29 | 2022-11-29 | 深哲新材料（广州）有限公司 | Defoaming auxiliary agent for water-based paint and preparation method thereof |
| CN115445252A (en) * | 2022-10-08 | 2022-12-09 | 杭州师范大学 | Composite defoaming agent and preparation method thereof |
-
2018
- 2018-10-29 CN CN201811270556.7A patent/CN111097197A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115400464A (en) * | 2022-09-29 | 2022-11-29 | 深哲新材料（广州）有限公司 | Defoaming auxiliary agent for water-based paint and preparation method thereof |
| CN115445252A (en) * | 2022-10-08 | 2022-12-09 | 杭州师范大学 | Composite defoaming agent and preparation method thereof |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200505 |
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| WD01 | Invention patent application deemed withdrawn after publication |