CN103965730B - A kind of zero VOC release water paint and preparation method thereof - Google Patents
A kind of zero VOC release water paint and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of environmentally friendly a kind of zero VOC release water paint and preparation method thereof.Adopt low Tg latex A and high glass transition temperature emulsion B physical blending by a certain percentage as basic film forming matter, only needing to add a small amount of coalescents when preparing water-borne wood coating can good filming, the low in raw material price of this water-borne wood coating, preparation technology is simple, and paint film has the permeability of excellence, glossiness, resistance to water and tissue adhesion performance simultaneously.
Description
Technical field:
The present invention relates to water paint of a kind of environmentally friendly zero VOC release room-temperature self crosslinking and preparation method thereof, belong to water-borne wood coating field.
Background technology:
Acrylic ester aquosity coating is with water for dispersion diluent, and excellent Water-borne Acrylic Coating must possess the performance that can compare favourably with traditional solvent based coating, and meets VOC (VOC) Abgasgesetz of various countries' increasingly stringent.China definition VOC in " environmental labelling product technology require water paint " (HJ/T201-2005) that promulgate for 2005 is the amount of all volatile organic compound in unit volume coating than water.Coating industry specifies, the VOC content coating lower than 30g/L belongs to low VOC coatings, and VOC content then belongs to Diamond Search coating less than 1g/L.
For reducing the VOC content in water paint, it is possible to select low film formation temperature emulsion, or use the coalescents of low VOC.CN141405A adopts the pure acrylate polymer emulsion of a kind of nucleocapsid structure to be film forming matter (mass percent 30～55%), add color stuffing (20～35%), water (5～20%), defoamer, dispersant, thickening agent and other auxiliary agent, obtain the super environmental protection latex paint of a kind of Diamond Search release, there is high temperature do not after-tack, low temperature can film forming, the VOC advantage close to zero, but its freeze-thaw stability is poor.CN103201346A discloses the levulinate coalescents of a kind of monohydroxy aliphatic alcohol with 10-20 carbon atom, there is the advantage that low VOC discharges, film forming efficiency is high, but it is relatively costly and film formation time is longer, limit the application in low-VOC aqueous coating field.US20010031362 discloses a kind of aqueous epoxy resins and organosilan double-component low VOC coatings, but its construction is inconvenient, and raw material is costly.
Summary of the invention:
It is an object of the invention to the B emulsion physical blending according to a certain percentage of the A emulsion with low Tg and high glass transition temperature, when in blending emulsion, the mass ratio of A emulsion is higher than 50%, needed for preparing water paint, coalescents consumption is lower than the 2% of quality of the emulsion, the water paint VOC burst size prepared less than 20g/L or is zero, water paint of a kind of environmentally friendly zero VOC release room-temperature self crosslinking and preparation method thereof is provided, low in raw material price, preparation and construction technology are simple, there is the permeability of excellence, glossiness and resistance to water, and improve hardness and the resistance to blocking of coating.
The water paint of a kind of zero VOC of the present invention release room-temperature self crosslinking, blending emulsion including two kinds of polymer emulsions of A, B is film forming matter, it is characterized in that two kinds of polymer emulsions of A, B are the emulsion that vitrification point is different, the vitrification point of A emulsion is-30 DEG C～30 DEG C, and the vitrification point of B emulsion is 50 DEG C～100 DEG C.Wherein polymer emulsion A is acrylic compounds hard monomer, acrylic compounds soft monomer, alkene class cross-linking monomer and the copolymer containing carboxyl or the vinyl monomer of amide groups；
Polymer B emulsion is acrylic compounds hard monomer, acrylic compounds soft monomer, alkene class cross-linking monomer and the copolymer containing carboxyl or the vinyl monomer of amide groups；
The solid content of two kinds of polymer emulsions of A, B is 30%～55%, and latex A and emulsion B mass ratio in water paint are 1:1～4:1.
Further, acrylic compounds hard monomer is a kind of in following material or their combination: methyl methacrylate, Tert-butyl Methacrylate, isobornyl methacrylate, isobornyl acrylate；
Acrylic compounds soft monomer is a kind of in following material or their combination: n-butyl acrylate, Isobutyl 2-propenoate, isoamyl acrylate, acrylic acid-2-ethyl caproite；
Alkene class cross-linking monomer is a kind of in following material or their combination: N-[2-(2-methyl-4-oxopentyl), acetoacetoxyethyl methacrylate, VTES, γ-(methacryloxy) propyl trimethoxy silicane, 3-(methacryloxy) hydroxypropyl methyl dimethoxysilane, vinyltrimethoxy silane, methacrylate based trimethoxy silane；
Vinyl monomer containing carboxyl or amide groups is a kind of in following material or their combination: acrylic acid, methacrylic acid, methylene-succinic acid, acrylamide, Methacrylamide, N hydroxymethyl acrylamide, N-butoxy methyl acrylamide.
Polymer emulsion A adopts following method to prepare:
1) in the reactor of nitrogen protection; under stirring condition; it is sequentially added into water, emulsifying agent, acrylic compounds hard monomer, acrylic compounds soft monomer, alkene class cross-linking monomer and the mixture containing carboxyl or the vinyl monomer of amide groups and carries out emulsifying; heating in water bath is to 50～90 DEG C; adding initiator causes polymerization to obtain seed emulsion; initiator need to be configured to initiator solution, and the response time is 0.5～1 hour；
2) by acrylic compounds hard monomer, acrylic compounds soft monomer, alkene class cross-linking monomer, being added separately to equipped with carrying out pre-emulsification dispersion in the reactor of mechanical stirring device containing the vinyl monomer of carboxyl or amide groups, water and emulsifying agent, the pre-emulsification time is 0.5～2 hour；
3) toward step 1) seed emulsion in dropping step 2) pre-emulsion that obtains and initiator solution, time for adding is 1～3 hour；
4) after dropwising, slaking reaction 2～4 hours, then reaction temperature is down to less than 40 DEG C, adds pH adjusting agent and regulate ph value of emulsion to 7～9, filter discharging with 200 mesh filter screens, prepare copolymer emulsion A；
Wherein step 1) in seed emulsion all kinds of monomer masses respectively each monomer gross mass 5%～25%, step 2) in pre-emulsion all kinds of monomer masses respectively each monomer gross mass 95%～75%；The mass ratio of acrylic compounds hard monomer, acrylic compounds soft monomer, alkene class cross-linking monomer and the vinyl monomer containing carboxyl or amide groups is: 30～60:40～70:3～8:2～5.
Polymer emulsion B adopts following method to prepare:
1) in the reactor of nitrogen protection; under stirring condition; be sequentially added into water, emulsifying agent, acrylic compounds hard monomer, acrylic compounds soft monomer, alkene class cross-linking monomer, mixture containing carboxyl or the vinyl monomer of amide groups carry out emulsifying; heating in water bath is to 50～90 DEG C; adding initiator causes polymerization to obtain seed emulsion; initiator need to be configured to initiator solution, and the response time is 0.5～1 hour；
2) by acrylic compounds hard monomer, acrylic compounds soft monomer, alkene class cross-linking monomer, being added separately to equipped with carrying out pre-emulsification dispersion in the reactor of mechanical stirring device containing the vinyl monomer of carboxyl or amide groups, water and emulsifying agent, the pre-emulsification time is 0.5～2 hour；
3) toward step 1) seed emulsion in dropping step 2) pre-emulsion that obtains and initiator solution, time for adding is 1～3 hour；
4) after dropwising, slaking reaction 2～4 hours, then reaction temperature is down to less than 40 DEG C, adds pH adjusting agent and regulate ph value of emulsion to 7～9, filter discharging with 200 mesh filter screens, prepare copolymer emulsion B；
Wherein step 1) in seed emulsion all kinds of monomer masses respectively each monomer gross mass 5%～25%, step 2) in pre-emulsion all kinds of monomer masses respectively each monomer gross mass 95%～75%；The mass ratio of acrylic compounds hard monomer, acrylic compounds soft monomer, alkene class cross-linking monomer and the vinyl monomer containing carboxyl or amide groups is: 60～90:10～30:3～8:0.5～5.
Emulsifying agent used by synthetic copolymer latex A, B be anionic emulsifier, nonionic emulsifier or anionic emulsifier and nonionic emulsifier composite in one, consumption is synthesis step 1) seed emulsion and synthesis step 2) in pre-emulsion the 1%～3% of all kinds of monomer gross masses.Wherein anion emulsifier is: one or several in disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate, allylpolyethoxy sulfonate, sulfosuccinate synthetic；Nonionic emulsifier is: the one in OPEO, epoxy ethane-epoxy propane copolyether, polyoxyethylene 20 sorbitan monostearate.
PH adjusting agent used by synthetic copolymer latex A, B is the one in ammonia, 2-amino-2-methyl-1-propanol, sodium bicarbonate.
The preparation method that the invention provides a kind of room-temperature self crosslinking zero VOC release water paint, with two kinds of polymer emulsion physical blendings of A, B for film forming matter, be separately added into defoamer, substrate wetting agents, coalescents, levelling agent, wetting dispersing agent, thickening agent one or more, also need to add pigment auxiliary agent in prepared by white paint, dispersion prepare water-borne wood coating, wherein A, B polymer emulsion total weight portion be 60%～90%.
The present invention proposes respectively by the A emulsion of seed emulsion semi-continuous process polymerization synthesis different glass temperature and B emulsion, wherein A emulsion is containing normal temperature crosslinked group and the low Tg soft emulsion containing carboxyl or amido functionality, and B emulsion is containing normal temperature crosslinked group and the high glass transition temperature hard emulsion containing carboxyl or amido functionality.Then by A emulsion and B emulsion physical blending according to a certain percentage, and with the composite formation water paints such as auxiliary agent.A, B emulsion has the good compatibility, polymer emulsion A can give the relatively low MFT of mixed emulsion (minimum film formation temperature) and self-crosslinking reaction occurs when film forming, do not use coalescents or use minute quantity coalescents to get final product good filming, the addition of polymer emulsion B can improve hardness and the resistance to blocking of water paint paint film, the blended of A, B emulsion makes paint film have the permeability of excellence, glossiness, resistance to water, and coating hardness and resistance to blocking are improved.
Detailed description of the invention
Embodiment 1:
(1) preparation of copolymer emulsion A
By 212.9g methyl methacrylate, 227.4g butyl acrylate, 4.8g methacrylic acid, 9.6g Methacrylamide, 14.4g N-[2-(2-methyl-4-oxopentyl) and 9.6g3-(methacryloxy) hydroxypropyl methyl dimethoxysilane, 0.72gEF-810,0.56gDSB, 0.25gPE-6100,0.5gNaHCO3It is sequentially added in the 2L reactor with agitating device with 327.6g deionized water, opens stirring pre-emulsification and disperse 1 hour.
It is sequentially added into 6.48gEF-810,5.04gDSB, 2.27gPE-6100,0.5gNaHCO in equipped with the 2L reactor of agitating device3, 218.4g deionized water, 11.2g methyl methacrylate, 11.97g butyl acrylate, 0.3g methacrylic acid, 0.5g Methacrylamide, 0.8g N-[2-(2-methyl-4-oxopentyl), 0.5g3-(methacryloxy) hydroxypropyl methyl dimethoxysilane, open stirring and pass into nitrogen 30min, heating in water bath is to 80 DEG C, being sequentially added into the 10g aqueous solution containing 0.25g Ammonium persulfate., the 10g aqueous solution containing 0.25g sodium sulfite and the 10g aqueous solution initiated polymerization containing 0.13gFF6M, the response time is 30 minutes.
Pre-emulsion, the 50g aqueous solution containing 0.25g Ammonium persulfate. and the 50g aqueous solution containing 0.25g sodium sulfite are instilled reactor after terminating by seed emulsion preparation simultaneously, and time for adding is 2 hours.It is incubated ripening 2 hours at 80 DEG C after completion of dropwise addition, less than 40 DEG C are cooled the temperature to after being incubated, add 0.45gAMP-95 and regulate ph value of emulsion to 8.5, add with 20g deionized water mixing 7.8g adipic dihydrazide, with 200 order filter-cloth filtering dischargings after stirring 15 minutes.
The design solid content of copolymer emulsion A is 42%, and vitrification point is 10 DEG C.
(2) preparation of copolymer emulsion B
By 423.7g methyl methacrylate, 48.0g butyl acrylate, 2.4g methacrylic acid, 4.8g Methacrylamide, 9.6g3-(methacryloxy) hydroxypropyl methyl dimethoxysilane, 0.72gEF-810,0.56gDSB, 0.25gPE-6100,0.5gNaHCO3It is sequentially added in the 2L reactor with agitating device with 327.6g deionized water, opens stirring pre-emulsification and disperse 1 hour.
It is sequentially added into 6.48gEF-810,5.04gDSB, 2.27gPE-6100,0.5gNaHCO in equipped with the 2L reactor of agitating device3, 218.4g deionized water, 22.3g methyl methacrylate, 2.5g butyl acrylate, 0.1g methacrylic acid, 0.2g Methacrylamide, 0.5g3-(methacryloxy) hydroxypropyl methyl dimethoxysilane, open stirring and pass into nitrogen 30min, heating in water bath is to 80 DEG C, being sequentially added into the 10g aqueous solution containing 0.25g Ammonium persulfate., the 10g aqueous solution containing 0.25g sodium sulfite and the 10g aqueous solution initiated polymerization containing 0.13gFF6M, the response time is 30 minutes.
Pre-emulsion, the 50g aqueous solution containing 0.25g Ammonium persulfate. and the 50g aqueous solution containing 0.25g sodium sulfite are instilled reactor after terminating by seed emulsion preparation simultaneously, and time for adding is 2 hours.It is incubated ripening 2 hours at 80 DEG C after completion of dropwise addition, after being incubated, cools the temperature to less than 40 DEG C, add 0.45gAMP-95 and regulate ph value of emulsion to 8.5, with 200 order filter-cloth filtering dischargings after stirring 15 minutes.
The design solid content of copolymer emulsion B is 42%, and vitrification point is 80 DEG C.
(3) preparation of the clear priming paint of aqueous wooden ware
500ml beaker adds 55.5g copolymer emulsion A and 18.5g copolymer emulsion B, open stirring 1600rpm to stir 10 minutes, it is sequentially added into 0.2g substrate wetting agents TEGO-500,0.4g defoamer BYK-024, improve mixing speed to disperse 15 minutes to 3000rpm, reduce mixing speed to 1600rpm, it is sequentially added into 7g water, 0.33gpH regulator AMP-95 and 0.3g thickening agent PUR40, with 200 order filter-cloth filtering dischargings after disperseing 15 minutes, makes varnish type water-borne wood coating.
From the preparation of embodiment 1, A, B emulsion described in embodiment 2-9 is distinctive in that the composition of emulsifying agent and consumption are different, other condition is consistent with embodiment 1 with technique, and concrete emulsifying agent composition and consumption are in Table 1.From the preparation of embodiment 1, A, B emulsion described in embodiment 10-16 is distinctive in that the composition of monomer and consumption are different, other condition is consistent with embodiment 1 with technique, and concrete monomer ratio is in Table 2.
Table 1: embodiment 2-9A, B emulsion synthesis emulsifying agent composition used and consumption
In table, EF-810 is sulfosuccinate synthetic, DSB is disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate, SE-10N is allylpolyethoxy sulfonate, LF-4 is sulfo-succinic acid salt mixture, OP-10 OPEO, Tween-60 is polyoxyethylene 20 sorbitan monostearate, and PE-6100 is propyleneoxide-ethyleneoxide copolyether.
Table 2: embodiment 10-16A emulsion synthesis monomer ratio used
Embodiment 10-16B emulsion synthesis monomer ratio used
In table, MMA is methyl methacrylate, BA is butyl acrylate, MAA is methacrylic acid, AA is acrylic acid, and MAM is Methacrylamide, and AM is acrylamide, DAAM is N-[2-(2-methyl-4-oxopentyl), KH-571 is 3-(methacryloxy) hydroxypropyl methyl dimethoxysilane, and A-151 is VTES, and A-174 is γ-(methacryloxy) propyl trimethoxy silicane.
A, B emulsion described in embodiment 17-22 is distinctive in that from embodiment 1 emulsifying agent allocation proportion in seed emulsion and pre-emulsion is different, and other condition is consistent with embodiment 1 with technique, and wherein emulsifying agent allocation proportion is in Table 3.
Table 3: embodiment 17-22A, B emulsion synthesis emulsifying agent allocation proportion used
Unit g
Table 4: embodiment 1-22 copolymer emulsion property indices test result
Note: sampling and measuring when conversion ratio terminates for reaction；Calcium ion stability method of testing is that addition 4ml mass fraction is the calcium chloride water of 0.5% in the emulsion of 16ml, room temperature stood after 48 hours, observes emulsion whether breakdown of emulsion, layering and precipitates out little particle flocculation material, if being difficult upper phenomenon, Calcium ion stability is passed through, and does not otherwise pass through.
Embodiment 23-33 is that A, B emulsion different proportion is blended prepares water-borne wood coating resistance to water, glossiness, hardness, resistance to blocking, 50 DEG C of storage stability test results.
Table 5: embodiment 23-33A, B emulsion different proportion are blended prepares water paint property indices test result
Note: embodiment 26 and embodiment 30 add the coalescents DPnB of 2% mass parts when preparing water paint；The test of 50 DEG C of storage stabilities, for adding 60g water paint in 100ml transparent plastic bottle, is positioned in 50 DEG C of baking ovens after sealing, observe water paint can storage-stable until occurring that sedimentation, layering, gel precipitate out the time of phenomenon, in sky.
Embodiment 34-38: the preparation of aqueous wooden ware based white primer
200ml beaker adds the wetting dispersing agent BYK-190 of 17g water, 7.5g, stir 10 minutes under 1200rpm mixing speed, add 75g rutile titanium dioxide and 0.5g anti-settling agent BYK-420, disperse under 2000rpm mixing speed, testing when fineness reaches below 30 μm with Hegman grind gage and stop stirring, the white slurry prepared remains to use.
null500ml beaker adds 60g polymer emulsion A and 20g polymer emulsion B，Open stirring 1600rpm to stir 10 minutes，It is sequentially added into 0.5g defoamer BYK-024、0.6g defoamer TEGO-902W、0.2g levelling agent BYK-346、1.0g deionized water，Rotating speed is increased to 3000rpm disperse 30 minutes，Add 1.0g silicon dioxide flatting silica and disperse 30 minutes at 3,000 rpm，Rotating speed is down to 1600rpm，It is sequentially added into 5.0g deionized water、The cured auxiliary agent MD2000 of 2.0g、0.1g levelling agent BYK-333 dispersed with stirring 15 minutes，It is sequentially added into 0.3gpH regulator AMP-95、2.0g auxiliary rheological agents R212，Dispersed with stirring adds 23g and starches in vain after 15 minutes at 1600 rpm，Continue after stirring 15 minutes with 200 order filter-cloth filtering dischargings.
Table 6: embodiment 34-37A, B emulsion different proportion are blended prepares water paint property indices test result
Note: embodiment 26 and embodiment 30 add the coalescents DPnB of 2% mass parts when preparing water paint；The test of 50 DEG C of storage stabilities, for adding 60g water paint in 100ml transparent plastic bottle, is positioned in 50 DEG C of baking ovens after sealing, observe water paint can storage-stable until occurring that sedimentation, layering, gel precipitate out the time of phenomenon, in sky.
Claims (6)
1. a zero VOC release water paint, is characterized in that including two kinds of acrylic polymer emulsions of A, B；Two kinds of polymer emulsions of A, B are the emulsion that vitrification point is different, and the vitrification point of A emulsion is-30 DEG C～30 DEG C, and the vitrification point of B emulsion is 50 DEG C～100 DEG C；Wherein polymer emulsion A is acrylic compounds hard monomer, acrylic compounds soft monomer, alkene class cross-linking monomer and the copolymer containing carboxyl or the vinyl monomer of amide groups；Acrylic compounds hard monomer, acrylic compounds soft monomer, alkene class cross-linking monomer, mass ratio containing carboxyl or the vinyl monomer of amide groups be: 30～60:40～70:3～8:2～5；
Polymer emulsion B is acrylic compounds hard monomer, acrylic compounds soft monomer, alkene class cross-linking monomer and the copolymer containing carboxyl or the vinyl monomer of amide groups；The mass ratio of acrylic compounds hard monomer, acrylic compounds soft monomer, alkene class cross-linking monomer and the vinyl monomer containing carboxyl or amide groups is: 60～90:10～30:3～8:0.5～5；
The solid content of two kinds of polymer emulsions of A, B is 30%～55%, and latex A and emulsion B mass ratio in water paint are 1:1～4:1；
Wherein acrylic compounds hard monomer is one or several in following material: methyl methacrylate, Tert-butyl Methacrylate, isobornyl methacrylate, isobornyl acrylate；Acrylic compounds soft monomer is one or several in following material: n-butyl acrylate, Isobutyl 2-propenoate, isoamyl acrylate, acrylic acid-2-ethyl caproite；
Alkene class cross-linking monomer is one or several in following material: N-[2-(2-methyl-4-oxopentyl), acetoacetoxyethyl methacrylate, VTES, γ-(methacryloxy) propyl trimethoxy silicane, 3-(methacryloxy) hydroxypropyl methyl dimethoxysilane, vinyltrimethoxy silane, methacrylate based trimethoxy silane；
Vinyl monomer containing carboxyl or amide groups is one or several in following material: acrylic acid, methacrylic acid, methylene-succinic acid, acrylamide, Methacrylamide, N hydroxymethyl acrylamide.
2. zero VOC according to claim 1 release water paint, is characterized in that described polymer emulsion A adopts following method to prepare:
1) in the reactor of nitrogen protection; under stirring condition; it is sequentially added into water, emulsifying agent, acrylic compounds hard monomer, acrylic compounds soft monomer, alkene class cross-linking monomer and the mixture containing carboxyl or the vinyl monomer of amide groups and carries out emulsifying; heating in water bath is to 50～90 DEG C; adding initiator causes polymerization to obtain seed emulsion; initiator need to be configured to initiator solution, and the response time is 0.5～1 hour；
2) by acrylic compounds hard monomer, acrylic compounds soft monomer, alkene class cross-linking monomer, being added separately to equipped with carrying out pre-emulsification dispersion in the reactor of mechanical stirring device containing the vinyl monomer of carboxyl or amide groups, water and emulsifying agent, the pre-emulsification time is 0.5～2 hour；
3) toward step 1) seed emulsion in dropping step 2) pre-emulsion that obtains and initiator solution, time for adding is 1～3 hour；
4) after dropwising, slaking reaction 2～4 hours, then reaction temperature is down to less than 40 DEG C, adds pH adjusting agent and regulate ph value of emulsion to 7～9, filter discharging with 200 mesh filter screens, prepare copolymer emulsion A；
Wherein step 1) in seed emulsion all kinds of monomer masses respectively each monomer gross mass 5%～25%, step 2) in pre-emulsion all kinds of monomer masses respectively each monomer gross mass 95%～75%.
3. zero VOC according to claim 1 release water paint, is characterized in that, described polymer emulsion B adopts following method to prepare:
1) in the reactor of nitrogen protection; under stirring condition; be sequentially added into water, emulsifying agent, acrylic compounds hard monomer, acrylic compounds soft monomer, alkene class cross-linking monomer, mixture containing carboxyl or the vinyl monomer of amide groups carry out emulsifying; heating in water bath is to 50～90 DEG C; adding initiator causes polymerization to obtain seed emulsion; initiator need to be configured to initiator solution, and the response time is 0.5～1 hour；
2) by acrylic compounds hard monomer, acrylic compounds soft monomer, alkene class cross-linking monomer, being added separately to equipped with carrying out pre-emulsification dispersion in the reactor of mechanical stirring device containing the vinyl monomer of carboxyl or amide groups, water and emulsifying agent, the pre-emulsification time is 0.5～2 hour；
3) toward step 1) seed emulsion in dropping step 2) pre-emulsion that obtains and initiator solution, time for adding is 1～3 hour；
4) after dropwising, slaking reaction 2～4 hours, then reaction temperature is down to less than 40 DEG C, adds pH adjusting agent and regulate ph value of emulsion to 7～9, filter discharging with 200 mesh filter screens, prepare copolymer emulsion B；
Wherein step 1) in seed emulsion all kinds of monomer masses respectively each monomer gross mass 5%～25%, step 2) in pre-emulsion all kinds of monomer masses respectively each monomer gross mass 95%～75%.
4. the zero VOC release water paint according to Claims 2 or 3, it is characterized in that: the emulsifying agent used by synthetic copolymer latex A, B be anionic emulsifier, nonionic emulsifier or anionic emulsifier and nonionic emulsifier composite in one, consumption is synthesis step 1) seed emulsion and synthesis step 2) in pre-emulsion the 1%～3% of all kinds of monomer gross masses；Wherein anion emulsifier is: one or several in disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate, allylpolyethoxy sulfonate, sulfosuccinate synthetic；Nonionic emulsifier is: the one in OPEO, epoxy ethane-epoxy propane copolyether, polyoxyethylene 20 sorbitan monostearate.
5. the zero VOC release water paint according to Claims 2 or 3, is characterized in that: pH adjusting agent is the one in ammonia, 2-amino-2-methyl-1-propanol, sodium bicarbonate.
6. the preparation method of a kind of zero VOC according to claim 1 release water paint, it is characterized in that: with the mixed emulsion of polymer emulsion A, B for film forming matter, add one or more auxiliary agents in defoamer, substrate wetting agents, coalescents, levelling agent, thickening agent, wetting dispersing agent, also need to add pigment auxiliary agent in prepared by white paint, dispersion prepare water-borne wood coating, wherein A, B polymer emulsion total percentage by weight be 60%～90%.
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| CN1687265A (en) * | 2005-04-15 | 2005-10-26 | 宁波广用纳米涂料有限公司 | Emulsion for environmental protection type latex paint and preparation method |
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|---|---|
| CN103965730A (en) | 2014-08-06 |
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