CN104559503A - Method for synthesizing water-based antirust coating - Google Patents
Method for synthesizing water-based antirust coating Download PDFInfo
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- CN104559503A CN104559503A CN201410579603.1A CN201410579603A CN104559503A CN 104559503 A CN104559503 A CN 104559503A CN 201410579603 A CN201410579603 A CN 201410579603A CN 104559503 A CN104559503 A CN 104559503A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/08—Styrene
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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
- 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
- C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
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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
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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Abstract
The invention relates to a method for synthesizing a water-based antirust coating. The method comprises the following steps: adding a composite emulsifier, deionized water and a pH value buffer agent into a four-mouth bottle, uniformly stirring, and adding a mixed monomer to serve as a core layer monomer; stirring and introducing nitrogen, adding an initiator at a time, heating, reducing the temperature of the system, thereby obtaining core polymerization emulsion; starting to dropwise add the residual monomer, initiator and emulsifier which are uniformly mixed on the basis of the core polymerization emulsion, completely dropwise adding, continuously preserving the temperature, thereby obtaining the core-shell styrene-acrylic emulsion; regulating the pH value by using ammonia water, filtering and discharging; adding the deionized water into a high-speed dispersion machine, uniformly mixing a dispersing agent, a wetting agent, an antifoaming agent, pigments and fillers and a corrosion inhibitor, thereby obtaining the color paste; and uniformly mixing and stirring the color paste, the styrene-acrylic emulsion, a coalescing agent, an antifoaming agent, a thickening agent and a pH regulator under low-speed stirring, filtering, discharging, thereby obtaining the water-based antirust coating. The method disclosed by the invention is simple and easy to control, and the synthesized water-based antirust coating is high in compactness.
Description
Technical field
The present invention relates to a kind of synthetic technology of organic coating, particularly relate to a kind of aqueous rust-proof coatings synthetic method.
Background technology
Coating Water-borne modification is protection of the environment and saves the common prescription of petroleum resources, the research of the aqueous rust-proof coatings of nontoxic, low toxicity has been become to the important directions of current rust proof paint development.Acrylate copolymer has the advantages such as protect light tint retention and ageing resistance is good, price is relatively low, be aided with the benzene emulsion of hard monomer vinylbenzene synthesis, be often used as the film forming system of aqueous rust-proof coatings, but benzene emulsion film compactness is poor, poor to the shielding of water vapour and oxygen, adopt cross-linking method can solve the problem of film compactness difference well during emulsion synthesize.
Summary of the invention
It is simple that technical problem to be solved by this invention is to provide a kind of method, easy to control, the good synthetic method of aqueous rust-proof coatings compactness of synthesis.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of aqueous rust-proof coatings synthetic method, comprises the steps:
In four-hole bottle, add compound emulsifying agent, deionized water, pH value buffer reagent, after stirring, add mix monomer as nuclear layer monomer;
Stir logical nitrogen, the disposable initiator added, temperature rises, and treats that system temperature falls after rise, obtains core polymerized emulsion;
On core polymerized emulsion basis, start to drip the residual monomer, initiator, the emulsifying agent that mix, drip off, continue insulation, obtain nucleocapsid benzene emulsion;
Use ammoniacal liquor adjust ph, filtration, discharging;
In high speed dispersor, add deionized water, dispersion agent, wetting agent, defoamer, color stuffing, inhibiter are mixed obtained mill base;
By mill base, benzene emulsion, film coalescence aid, defoamer, thickening material and pH adjusting agent mixing and stirring under stirring at low speed, filter discharging, obtain aqueous rust-proof coatings.
On the basis of technique scheme, the present invention can also do following improvement.
Further, describedly in four-hole bottle, add compound emulsifying agent, deionized water, pH value buffer reagent, after stirring, add mix monomer being implemented as follows as nuclear layer monomer step:
In the four-hole bottle that thermometer, whipping appts, reflux cooler and dropping funnel be housed, add compound emulsifying agent, deionized water, pH value buffer reagent, after stirring, add 30 ~ 50% mix monomers as nuclear layer monomer.
Further, nitrogen is led in described stirring, the disposable initiator added, and temperature rises, and treats that system temperature falls after rise, obtains being implemented as follows of core polymerized emulsion step:
Stir logical nitrogen 10 ~ 30min, be warming up to 70 ~ 80 DEG C, disposable add 45 ~ 50% initiator, temperature rises to 80 ~ 85 DEG C, treats that system temperature falls after rise to 60 ~ 65 DEG C, obtains core polymerized emulsion.
Further, described on core polymerized emulsion basis, start to drip the residual monomer, initiator, the emulsifying agent that mix, drip off, continue insulation, obtain being implemented as follows of nucleocapsid benzene emulsion step:
On core polymerized emulsion basis, start to drip the residual monomer, initiator, the emulsifying agent that mix, drip off in 1 ~ 1.5h, continue insulation 2 ~ 2.5h, obtain nucleocapsid benzene emulsion.
Further, described ammoniacal liquor adjust ph, to filter, being implemented as follows of discharging step:
Being cooled to 40 ~ 45 DEG C, is 7 ~ 8 by ammoniacal liquor adjust ph, filtration, discharging.
Further, described under stirring at low speed by mill base, benzene emulsion, film coalescence aid, defoamer, thickening material and pH adjusting agent mixing and stirring, filter discharging, obtain being implemented as follows of aqueous rust-proof coatings step:
Under stirring at low speed, be 1.1:1:0.8:0.4:1.2:1 ~ 1.5:1:0.8:0.4:1.2:1 according to volume ratio, by mill base, benzene emulsion, film coalescence aid, defoamer, thickening material and pH adjusting agent mixing and stirring, filter discharging, obtain aqueous rust-proof coatings.
The invention has the beneficial effects as follows: method is simple, and easy to control, the aqueous rust-proof coatings compactness of synthesis is better.
Embodiment
Be described principle of the present invention and feature below in conjunction with example, example, only for explaining the present invention, is not intended to limit scope of the present invention.
A kind of aqueous rust-proof coatings synthetic method, comprises the steps:
In four-hole bottle, add compound emulsifying agent, deionized water, pH value buffer reagent, after stirring, add mix monomer as nuclear layer monomer;
Stir logical nitrogen, the disposable initiator added, temperature rises, and treats that system temperature falls after rise, obtains core polymerized emulsion;
On core polymerized emulsion basis, start to drip the residual monomer, initiator, the emulsifying agent that mix, drip off, continue insulation, obtain nucleocapsid benzene emulsion;
Use ammoniacal liquor adjust ph, filtration, discharging;
In high speed dispersor, add deionized water, dispersion agent, wetting agent, defoamer, color stuffing, inhibiter are mixed obtained mill base;
By mill base, benzene emulsion, film coalescence aid, defoamer, thickening material and pH adjusting agent mixing and stirring under stirring at low speed, filter discharging, obtain aqueous rust-proof coatings.
Embodiment 1:
In the four-hole bottle that thermometer, whipping appts, reflux cooler and dropping funnel be housed, add compound emulsifying agent, deionized water, pH value buffer reagent, after stirring, add 30% mix monomer as nuclear layer monomer; Stir logical nitrogen 10min, be warming up to 70 DEG C, disposable add 45% initiator, temperature rises to 80 DEG C, treats that system temperature falls after rise to 60 DEG C, obtains core polymerized emulsion; On core polymerized emulsion basis, start to drip the residual monomer, initiator, the emulsifying agent that mix, drip off in 1h, continue insulation 2h, obtain nucleocapsid benzene emulsion; Being cooled to 40 DEG C, is 7 by ammoniacal liquor adjust ph, filtration, discharging; In high speed dispersor, add deionized water, dispersion agent, wetting agent, defoamer, color stuffing, inhibiter are mixed obtained mill base; Under stirring at low speed, be 1.1:1:0.8:0.4:1.2:1 according to volume ratio, by mill base, benzene emulsion, film coalescence aid, defoamer, thickening material and pH adjusting agent mixing and stirring, filter discharging, obtain aqueous rust-proof coatings.
Embodiment 2:
In the four-hole bottle that thermometer, whipping appts, reflux cooler and dropping funnel be housed, add compound emulsifying agent, deionized water, pH value buffer reagent, after stirring, add 40% mix monomer as nuclear layer monomer; Stir logical nitrogen 20min, be warming up to 75 DEG C, disposable add 48% initiator, temperature rises to 82 DEG C, treats that system temperature falls after rise to 62 DEG C, obtains core polymerized emulsion; On core polymerized emulsion basis, start to drip the residual monomer, initiator, the emulsifying agent that mix, drip off in 1.2h, continue insulation 2.2h, obtain nucleocapsid benzene emulsion; Being cooled to 42 DEG C, is 7.5 by ammoniacal liquor adjust ph, filtration, discharging; In high speed dispersor, add deionized water, dispersion agent, wetting agent, defoamer, color stuffing, inhibiter are mixed obtained mill base; Under stirring at low speed, according to volume ratio be 1.2:1:0.8:0.4:1.2:1 by mill base, benzene emulsion, film coalescence aid, defoamer, thickening material and pH adjusting agent mixing and stirring, filter discharging, obtain aqueous rust-proof coatings.
Embodiment 3:
In the four-hole bottle that thermometer, whipping appts, reflux cooler and dropping funnel be housed, add compound emulsifying agent, deionized water, pH value buffer reagent, after stirring, add 50% mix monomer as nuclear layer monomer; Stir logical nitrogen 30min, be warming up to 80 DEG C, disposable add 50% initiator, temperature rises to 85 DEG C, treats that system temperature falls after rise to 65 DEG C, obtains core polymerized emulsion; On core polymerized emulsion basis, start to drip the residual monomer, initiator, the emulsifying agent that mix, drip off in 1.5h, continue insulation 2.5h, obtain nucleocapsid benzene emulsion; Being cooled to 45 DEG C, is 8 by ammoniacal liquor adjust ph, filtration, discharging; In high speed dispersor, add deionized water, dispersion agent, wetting agent, defoamer, color stuffing, inhibiter are mixed obtained mill base; Under stirring at low speed, be 1.5:1:0.8:0.4:1.2:1 according to volume ratio, by mill base, benzene emulsion, film coalescence aid, defoamer, thickening material and pH adjusting agent mixing and stirring, filter discharging, obtain aqueous rust-proof coatings.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. an aqueous rust-proof coatings synthetic method, is characterized in that, comprises the steps:
In four-hole bottle, add compound emulsifying agent, deionized water, pH value buffer reagent, after stirring, add mix monomer as nuclear layer monomer;
Stir logical nitrogen, the disposable initiator added, temperature rises, and treats that system temperature falls after rise, obtains core polymerized emulsion;
On core polymerized emulsion basis, start to drip the residual monomer, initiator, the emulsifying agent that mix, drip off, continue insulation, obtain nucleocapsid benzene emulsion;
PH value is regulated, filtration, discharging with ammoniacal liquor;
In high speed dispersor, add deionized water, dispersion agent, wetting agent, defoamer, color stuffing, inhibiter are mixed obtained mill base;
By mill base, benzene emulsion, film coalescence aid, defoamer, thickening material and pH conditioning agent mixing and stirring under stirring at low speed, filter discharging, obtain aqueous rust-proof coatings.
2. a kind of aqueous rust-proof coatings synthetic method according to claim 1, it is characterized in that, describedly in four-hole bottle, add compound emulsifying agent, deionized water, pH value buffer reagent, after stirring, add mix monomer being implemented as follows as nuclear layer monomer step:
In the four-hole bottle that thermometer, whipping appts, reflux cooler and dropping funnel be housed, add compound emulsifying agent, deionized water, pH value buffer reagent, after stirring, add 30 ~ 50% mix monomers as nuclear layer monomer.
3. a kind of aqueous rust-proof coatings synthetic method according to claim 1, it is characterized in that, nitrogen is led in described stirring, the disposable initiator added, and temperature rises, and treats that system temperature falls after rise, obtains being implemented as follows of core polymerized emulsion step:
Stir logical nitrogen 10 ~ 30min, be warming up to 70 ~ 80 DEG C, disposable add 45 ~ 50% initiator, temperature rises to 80 ~ 85 DEG C, treats that system temperature falls after rise to 60 ~ 65 DEG C, obtains core polymerized emulsion.
4. a kind of aqueous rust-proof coatings synthetic method according to claim 1, is characterized in that, described on core polymerized emulsion basis, start to drip the residual monomer, initiator, the emulsifying agent that mix, drip off, continue insulation, obtain being implemented as follows of nucleocapsid benzene emulsion step:
On core polymerized emulsion basis, start to drip the residual monomer, initiator, the emulsifying agent that mix, drip off in 1 ~ 1.5h, continue insulation 2 ~ 2.5h, obtain nucleocapsid benzene emulsion.
5. a kind of aqueous rust-proof coatings synthetic method according to claim 1, is characterized in that, described ammoniacal liquor regulates pH value, filtration, being implemented as follows of discharging step:
Be cooled to 40 ~ 45 DEG C, regulate pH value to be 7 ~ 8 with ammoniacal liquor, filtration, discharging.
6. a kind of aqueous rust-proof coatings synthetic method according to claim 1, it is characterized in that, described under stirring at low speed by mill base, benzene emulsion, film coalescence aid, defoamer, thickening material and pH conditioning agent mixing and stirring, filter discharging, obtain being implemented as follows of aqueous rust-proof coatings step:
Under stirring at low speed, be 1.1:1:0.8:0.4:1.2:1 ~ 1.5:1:0.8:0.4:1.2:1 according to volume ratio, by mill base, benzene emulsion, film coalescence aid, defoamer, thickening material and pH conditioning agent mixing and stirring, filter discharging, obtain aqueous rust-proof coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410579603.1A CN104559503A (en) | 2014-10-25 | 2014-10-25 | Method for synthesizing water-based antirust coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410579603.1A CN104559503A (en) | 2014-10-25 | 2014-10-25 | Method for synthesizing water-based antirust coating |
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| Publication Number | Publication Date |
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| CN104559503A true CN104559503A (en) | 2015-04-29 |
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| CN201410579603.1A Pending CN104559503A (en) | 2014-10-25 | 2014-10-25 | Method for synthesizing water-based antirust coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108342141A (en) * | 2018-01-30 | 2018-07-31 | 东莞市佳乾新材料科技有限公司 | A kind of styrene-acrylic emulsion aqueous rust-proof coatings and preparation method thereof |
-
2014
- 2014-10-25 CN CN201410579603.1A patent/CN104559503A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108342141A (en) * | 2018-01-30 | 2018-07-31 | 东莞市佳乾新材料科技有限公司 | A kind of styrene-acrylic emulsion aqueous rust-proof coatings and preparation method thereof |
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Application publication date: 20150429 |