CN1872888A - Method for synthesizing latex of copolymer in cinnamic acrylic ester - Google Patents
Method for synthesizing latex of copolymer in cinnamic acrylic ester Download PDFInfo
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- CN1872888A CN1872888A CN 200610028501 CN200610028501A CN1872888A CN 1872888 A CN1872888 A CN 1872888A CN 200610028501 CN200610028501 CN 200610028501 CN 200610028501 A CN200610028501 A CN 200610028501A CN 1872888 A CN1872888 A CN 1872888A
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Abstract
This invention relates to a method for synthesizing styrene-acrylate emulsion for construction use, which is composed of: water 40-55 wt.%, styrene 18-30 wt.%, (methyl)acrylate 18-30 wt.%, and (methyl)acrylic acid 0.5-4 wt.%. The method comprises mixing above raw materials, and polymerizing at 70-85 deg.C in the presence of the initiator and the emulsifier to obtain the emulsion. The emulsion has good performance, and can be used as outer wall paint with weathering resistance higher than 800 h and contamination resistance less than 6%.
Description
Technical field
The present invention relates to a kind of synthetic method of latex of copolymer in cinnamic acrylic ester for building.After this emulsion is made into exterior coating, high comprehensive performance, weathering resistance can reach more than 800 hours, anti-staining property＜6%.
Background technology
At present, the benzene emulsion that domestic manufacturer produces is mainly as interior wall coating, because of it has excellent in water resistance and scrub resistance, and be environmentally friendly, but be used in exterior wall, the coating that benzene emulsion is made into mostly is low-grade coating, because of its weathering resistance often has only 400 hours, pure-acrylic emulsion difficult and that weathering resistance is good compares favourably, latter's weathering resistance can reach more than 800 hours, but with regard to cost, benzene emulsion is more much lower than pure-acrylic emulsion.And the benzene emulsion of external manufacturer production, though have good weather arranged, anti-staining property is undesirable, anti-staining property＞10%.
Summary of the invention
The object of the present invention is to provide cheaply a kind of and the weathering resistance of exterior wall phenylpropyl alcohol latex coating, anti-staining property are increased substantially, simultaneously the benzene emulsion of other excellent combination property.
The objective of the invention is to be achieved through the following technical solutions:
Weather-proof and anti-latex of copolymer in cinnamic acrylic ester of staining is to be medium with water, is comonomer with vinylbenzene, (methyl) acrylate and (methyl) vinylformic acid, and adds emulsifying agent and initiator carries out the polyreaction synthetic.Polymerization process is: add the water, emulsifying agent, protection glue of metering and on a small quantity through pre-emulsified mix monomer, treat that temperature reaches 70 ℃ in reactor, add the part initiator; Behind reaction 20～30min, begin to drip the good monomer of remaining emulsification and the mixture of initiator, under 70～85 ℃ condition, dropwise in 3～4 hours; Be warming up to 90 ℃, be incubated after 1 hour, cooling and with in the ammoniacal liquor and discharging.
The weight percent of each moiety is in the latex of copolymer in cinnamic acrylic ester: water 40～55%, vinylbenzene 18～30%, (methyl) acrylate 18～30%; (methyl) vinylformic acid 0.5～3%; emulsifying agent 0.5～4%, initiator 0.1～0.5%, protection glue 0.1～0.5%.Wherein, (methyl) acrylate monomer is made up of at least a in butyl acrylate and methyl methacrylate or the isopropyl methacrylate; (methyl) Acrylic Acid Monomer is a kind of in the acrylic or methacrylic acid; Emulsifying agent is sulfosuccinate ester and polyoxyethylene nonylphenol ether composition, and wherein, the sulfosuccinate ester accounts for 70～90 weight %, and polyoxyethylene nonylphenol ether accounts for 10～30 weight %; Initiator is a kind of in Potassium Persulphate or the ammonium persulphate; Protection glue is a kind of in Walocel MT 20.000PV, polyacrylamide or the sodium polyacrylate.
The cinnamic acrylic ester emulsion high comprehensive performance that the present invention makes, the Weatherability of Exterior Wall Coatings that is made into can reach more than 800 hours, anti-staining property＜6%.
Embodiment
The invention will be further elaborated below by specific embodiment.
Embodiment 1
In the reactor that electric mixer, helix tube type condenser, thermometer are housed, prepare emulsion.At first form by following prescription: vinylbenzene 30%, described per-cent consist of the weight percent that accounts in the emulsion total amount; down together; butyl acrylate 21%, methyl methacrylate 2%, methacrylic acid 1%, sulfosuccinate ester 3%, polyoxyethylene nonylphenol ether 0.4%, polyacrylamide 0.3%, Potassium Persulphate 0.3%, deionized water 42.0%; emulsification in monomer and partial emulsifier and the water adding emulsor is standby, then residual emulsifier, water, protection glue and a small amount of mix monomer that emulsification is good are in advance added in the reactor.Treat that temperature reaches 70 ℃, add the part initiator, behind the reaction 25min, begin to drip the good monomer of remaining emulsification and the mixture of initiator.About 85 ℃, dropwise in 3 hours, be warming up to 90 ℃ then, be incubated 1 hour.Lower the temperature at last and with in the ammoniacal liquor and discharging.The benzene emulsion high comprehensive performance that synthesizes, the exterior coating weather resisteant that is made into can reach 900 hours, and anti-staining property is 4%.
Embodiment 2
Synthesizing formula, technological process and condition are with embodiment 1, and difference is the initiator potassium persulfate of embodiment 1 is changed to ammonium persulphate.The benzene emulsion over-all properties that synthesizes sees Table 1.
Embodiment 3
Synthesizing formula, technological process and condition are with embodiment 1, difference is one of the polymerization single polymerization monomer of embodiment 1 methyl methacrylate is changed to isopropyl methacrylate, the amount of another polymerization single polymerization monomer methacrylic acid brings up to 2.5% by 1%, and the amount of deionized water is reduced to 40.5% by 42.0%.The benzene emulsion over-all properties that synthesizes sees Table 1.
Embodiment 4
Synthesizing formula, technological process and condition are with embodiment 1, and difference is the cinnamic amount of the comonomer of embodiment 1 is reduced to 25% by 30%, and initiator potassium persulfate is changed to ammonium persulphate, and the amount of deionized water is brought up to 47.0% by 42.0%.The benzene emulsion over-all properties that synthesizes sees Table 1.
Embodiment 5
Synthesizing formula, technological process and condition are with embodiment 4; difference is the amount of one of the polymerization single polymerization monomer of embodiment 4 methacrylic acid is brought up to 2.5% by 1%; to protect the glue polyacrylamide to be changed to sodium polyacrylate, and the amount of deionized water will be reduced to 45.5% by 47.0%.The benzene emulsion over-all properties that synthesizes sees Table 2.
Embodiment 6
Synthesizing formula, technological process and condition are with embodiment 4, and difference is the protection glue polyacrylamide of embodiment 4 is changed to sodium polyacrylate, and initiator ammonium persulfate is changed to Potassium Persulphate.The benzene emulsion over-all properties that synthesizes sees Table 2.
Embodiment 7
Synthesizing formula, technological process and condition are with embodiment 4, and difference is one of the polymerization single polymerization monomer of embodiment 4 methyl methacrylate is changed to isopropyl methacrylate, and the amount of another polymerization single polymerization monomer methacrylic acid brings up to 2.5% by 1%.The benzene emulsion over-all properties that synthesizes sees Table 2.
Embodiment 8
Synthesizing formula, technological process and condition are with embodiment 1, and difference is the protection glue polyacrylamide of embodiment 1 is changed to Walocel MT 20.000PV, and initiator potassium persulfate is changed to ammonium persulphate.The benzene emulsion over-all properties that synthesizes sees Table 2.
The prescription of table 1 embodiment 1～4 and the over-all properties of synthetic emulsion
| Embodiment | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Vinylbenzene, % | 30 | 30 | 30 | 25 |
| Butyl acrylate, % | 21 | 21 | 21 | 21 |
| Methacrylic ester, % | Methyl esters 2 | Methyl esters 2 | Isopropyl ester 2 | Methyl esters 2 |
| Methacrylic acid, % | 1 | 1 | 2.5 | 1 |
| The sulfosuccinate ester, % | 3 | 3 | 3 | 3 |
| Soxylat A 25-7, %* | 0.4 | 0.4 | 0.4 | 0.4 |
| Protection glue, % | Polyacrylamide 0.3 | Polyacrylamide 0.3 | Polyacrylamide 0.3 | Polyacrylamide 0.3 |
| Initiator, % | Potassium Persulphate 0.3 | Ammonium persulphate 0.3 | Potassium Persulphate 0.3 | Ammonium persulphate 0.3 |
| Deionized water, % | 42.0 | 42.0 | 40.5 | 47.0 |
| Ageing resistance, hour | 900 | 910 | 850 | 950 |
| Anti-staining property, % | 4 | 4 | 5 | 5 |
| Other over-all properties ** | Excellent | Excellent | Excellent | Excellent |
*: be polyoxyethylene nonylphenol ether; *: the expression over-all properties all reaches national emulsion exterior coating premium grads standard.
The prescription of table 2 embodiment 5～8 and the over-all properties of synthetic emulsion
| Embodiment | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 |
| Vinylbenzene, % | 25 | 25 | 25 | 30 |
| Butyl acrylate, % | 21 | 21 | 21 | 21 |
| Methacrylic ester, % | Methyl esters 2 | Methyl esters 2 | Isopropyl ester 2 | Methyl esters 2 |
| Methacrylic acid, % | 2.5 | 1 | 2.5 | 1 |
| The sulfosuccinate ester, % | 3 | 3 | 3 | 3 |
| Soxylat A 25-7, %* | 0.4 | 0.4 | 0.4 | 0.4 |
| Protection glue, % | Sodium polyacrylate 0.3 | Sodium polyacrylate 0.3 | Polyacrylamide 0.3 | Walocel MT 20.000PV 0.3 |
| Persulphate, % | Ammonium persulphate 0.3 | Potassium Persulphate 0.3 | Ammonium persulphate 0.3 | Ammonium persulphate 0.3 |
| Deionized water, % | 45.5 | 47.0 | 47.0 | 42.0 |
| Ageing resistance, hour | 920 | 930 | 900 | 900 |
| Anti-staining property, % | 5 | 5 | 5 | 4 |
| Other over-all properties ** | Excellent | Excellent | Excellent | Poor water resistance |
*: be polyoxyethylene nonylphenol ether; *: the expression over-all properties all reaches national emulsion exterior coating premium grads standard.
Claims (3)
1, a kind of synthetic method of latex of copolymer in cinnamic acrylic ester; it is characterized in that this copolymer emulsion is is medium with water; with vinylbenzene, (methyl) acrylate and (methyl) vinylformic acid is comonomer; and add emulsifying agent and initiator carries out the emulsion polymerization synthetic; the weight percent of each moiety is: water 40～55%; vinylbenzene 18～30%; (methyl) acrylate 18～30%; (methyl) vinylformic acid 0.5～3%; emulsifying agent 0.5～4%; initiator 0.1～0.5%, protection glue 0.1～0.5%.
2, the synthetic method of latex of copolymer in cinnamic acrylic ester according to claim 1 is characterized in that (methyl) acrylate monomer is by at least a composition the in butyl acrylate and methyl methacrylate or the isopropyl methacrylate; (methyl) Acrylic Acid Monomer is acrylic or methacrylic acid; Emulsifying agent is the composition of sulfosuccinate ester and polyoxyethylene nonylphenol ether, and wherein, the sulfosuccinate ester accounts for 70～90 weight %, and polyoxyethylene nonylphenol ether accounts for 10～30 weight %; Initiator is Potassium Persulphate or ammonium persulphate; Protection glue is a kind of in Walocel MT 20.000PV, polyacrylamide or the sodium polyacrylate.
3, the synthetic method of latex of copolymer in cinnamic acrylic ester according to claim 1, it is characterized in that polymerization process is: in reactor, add the water, emulsifying agent, protection glue of metering and on a small quantity through pre-emulsified mix monomer, treat that temperature reaches 70 ℃, add the part initiator; Behind reaction 20～30min, begin to drip the good monomer of remaining emulsification and the mixture of initiator, under 70～85 ℃ condition, dropwise in 3～4 hours; Be warming up to 90 ℃, be incubated after 1 hour, cooling and with in the ammoniacal liquor and discharging.
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| CN 200610028501 CN1872888A (en) | 2006-06-30 | 2006-06-30 | Method for synthesizing latex of copolymer in cinnamic acrylic ester |
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| CN 200610028501 CN1872888A (en) | 2006-06-30 | 2006-06-30 | Method for synthesizing latex of copolymer in cinnamic acrylic ester |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702909A (en) * | 2012-06-06 | 2012-10-03 | 吉林大学 | Aqueous anti-stone-bumping automobile prime coat material and preparation method thereof |
| CN105218751A (en) * | 2015-09-16 | 2016-01-06 | 辽阳意邦新型建材集团有限公司 | A kind of aqueous, environmental protective resin and preparation method thereof |
| CN108015293A (en) * | 2017-12-21 | 2018-05-11 | 宁波金轮磁材技术有限公司 | A kind of dual alloy Fe-B rare-earth permanent magnet and its manufacture method |
-
2006
- 2006-06-30 CN CN 200610028501 patent/CN1872888A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702909A (en) * | 2012-06-06 | 2012-10-03 | 吉林大学 | Aqueous anti-stone-bumping automobile prime coat material and preparation method thereof |
| CN105218751A (en) * | 2015-09-16 | 2016-01-06 | 辽阳意邦新型建材集团有限公司 | A kind of aqueous, environmental protective resin and preparation method thereof |
| CN108015293A (en) * | 2017-12-21 | 2018-05-11 | 宁波金轮磁材技术有限公司 | A kind of dual alloy Fe-B rare-earth permanent magnet and its manufacture method |
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Open date: 20061206 |