CN106497288A - A kind of water-based metal packaging coating and preparation method thereof - Google Patents
A kind of water-based metal packaging coating and preparation method thereof Download PDFInfo
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- CN106497288A CN106497288A CN201610964610.2A CN201610964610A CN106497288A CN 106497288 A CN106497288 A CN 106497288A CN 201610964610 A CN201610964610 A CN 201610964610A CN 106497288 A CN106497288 A CN 106497288A
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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
- C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/08—Homopolymers or copolymers of acrylic acid esters
-
- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
-
- 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
- C09D7/20—Diluents or solvents
-
- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a kind of water-based metal packaging coating, including the component of following mass percent：The water of the acrylic resin of 30 60wt%, the polyester resin of 5 20wt%, the amino resins of 4 15wt%, the pigment of 10 40wt%, the filler of 3 10wt%, the cosolvent of 0.5 5wt%, the auxiliary agent of 0.5 3wt% and 10 40%wt.Invention additionally discloses the preparation method of the water-based metal packaging coating and a kind of acrylic resin.The property mental package coating environmental protection that the present invention is provided, simple production process, low cost, good leveling property, adhesive force height, color inhibition, solid content are high and viscosity is low, there is high shallow, the Clear ＆ Transparent degree of color, good guarantor's light colour retention and weatherability, film is plentiful, heat-resist the characteristics of, chemical resistance is good, stable to acid, alkali, alcohol, oil etc..
Description
Technical field
The present invention relates to a kind of powdery paints, and in particular to a kind of water-based metal packaging coating, while the present invention is also related to
And the preparation method of the coating.
Background technology
In order to strengthen the weatherability and corrosion resistance of metallic article, extend its service life.Generally need to metal material
It is surface-treated.Metal surface treatment technology has many kinds, for example spray painting, plating, chemical oxidation, coating technology etc..Using
The method processed to metal surface by coating technology is long-standing, and wherein simple effective method is directly in metal watch the most
Face applies suitable coating, after appropriate temperature baking, after treating the solvent evaporation in coating, just can be in metal surface shape
Into one layer of fine and close protecting film.
At present, metallic paint product is based on benzene class, ketone and esters solvent type baked paint, again may be used by resinous type
It is divided into polyester baking-type, epoxy baking-type, four big class of alkyd baking-type and acrylic acid baking-type.Solvent-borne type toasts metallic paint
Application comparative maturity, have the advantages that adhesive force good, pliability is good, high temperature non yellowing.However, containing in these solvent based coatings
There are a large amount of organic solvents, in use, organic solvent is volatized in air, and this is not only detrimental to health, Er Qiehui
Cause serious environmental pollution.Additionally, solvent based coating is required for solidifying through high-temperature baking, baking temperature is mostly in 160-
Between 240 DEG C, so as to need to consume the substantial amounts of energy, it is unfavorable for resources conservation.With in global range to environment, health with money
The pay attention to day by day of source problem, metallic paint industry are increasingly faced with huge environmental protection, ecological and economic pressures.Therefore, research and develop new
Generation volatility is little, without or micro- waterborne metallic paint low containing VOC, small toxicity, environmental protection, baking temperature be nowadays coatings industry
In a main developing direction.Metallic paint product in actual industrial and daily use, with acrylic resin as host
It is most widely used.However, such product existing need in terms of adhesiveness, impact resistance, gloss, solid content and viscosity
Further improve.
Content of the invention
An object of the present invention is to provide a kind of adhesive force height, good pliability, color inhibition, solid content are high and viscosity is low
Water-based metal packaging coating.
A kind of water-based metal packaging coating that the present invention is provided, including following composition：The acrylic resin of 30-60wt%,
The polyester resin of 5-20wt%, the amino resins of 4-15wt%, the pigment of 10-40wt%, the filler of 3-10wt%, 0.5-5wt% are helped
The water of solvent, the auxiliary agent of 0.5-3wt% and 10-40%wt.
Used as one embodiment of the present of invention, the acrylic resin is prepared by the method for comprising the following steps：
（1）50-70 part by weight of n-butanol is added in reactor and is warming up to 105-130 DEG C, Deca contains 8- by 30-50 weight portions
The acrylic acid of 15wt%, the methacrylic acid of 3-8wt%, the ethyl acrylate of 5-8wt%, the butyl acrylate of 20-45wt%, 2-
The butyl methacrylate of 15wt%, the methyl methacrylate of 3-5wt%, the 2-(Acryloyloxy)ethanol of 3-10wt%, the third of 2-5wt%
Olefin(e) acid hydroxypropyl acrylate, the glycidyl methacrylate of 1-5wt%, the acrylic compounds mixing list of the n-octyl of 3-8wt%
The chain-transferring agent group of body, addition for the initiator and 0.05-0.2wt% of acrylic compounds mix monomer weight 0.1-0.5wt%
Into mixed liquor, and control to complete Deca in 3-6 hours；
（2）Reaction system is incubated 1-2 hours, then adds 0.1-0.3 weight portion initiators, taken out after continuing insulation 2-5 hours true
Empty removing n-butyl alcohol；
（3）Subsequently by the temperature of reaction system to less than 70 DEG C, pH value is neutralized to 6- with ammonia or organic amine neuutralizer
7.5, it is 35-60wt% to be eventually adding suitable quantity of water and adjust to solid content.
Organic amine neuutralizer in step (3) includes various organic amines, such as triethylamine, dimethylethanolamine, 2,2-
Dimethylamino -2- methylpropanols, 2- amino-2-methyl propanol, N-ethylmorpholine etc..
Amino resins of the present invention are HMMM resin, butyl etherified melamine resin or benzene
303,1156,659 resins of substituted melamine resin, such as Qing Te companies；The cosolvent is isopropyl alcohols, butyl glycol ether class
Or Propylene Glycol ethers；The auxiliary agent includes levelling agent, dispersant, defoamer, nertralizer, and wherein levelling agent can be organosilicon stream
Flat agent or acrylate levelling agent, dispersant can be polycarboxylate sodium's dispersant or high-molecular block copolymer dispersant such as
Polyacrylate block copolymer dispersant, organic silicon block copolymer dispersant, defoamer can be antifoaming agent of non-silicone
Or organic silicon defoamer, the nertralizer includes that ammonia and organic amine neuutralizer, organic amine neuutralizer include various organic amines, such as
Triethylamine, dimethylethanolamine, 2,2- dimethylamino -2- methylpropanols, 2- amino-2-methyl propanol, N-ethylmorpholine；Described
Pigment includes phthalocyanine blue, permanent yellow, paratonere, titanium dioxide；Described filler includes Pulvis Talci, Kaolin, barium sulfate.Described
In various auxiliary agents, those skilled in the art can need therefrom to select one or more according to practical application and be combined
Use, it is also possible to further add appropriate other auxiliary agents such as wetting agent, brightening agent, water-borne wax etc..
The two of the object of the invention are to provide a kind of method for preparing above-mentioned water-based metal packaging coating.
Specifically, the method for preparing above-mentioned water-based metal packaging coating, first with the propylene of 30-60wt%
Acid resin, the polyester resin of 5-20wt%, the coating amino resins of 4-15wt%, the pigment of 10-40wt%, 3-10wt% are filled out
The proportioning raw materials of the water of material, the cosolvent of 0.5-5wt%, the auxiliary agent of 0.5-3wt% and 10-40%wt, weigh each raw material, then will
Acrylic resin, polyester resin and the water for weighing is added and is disperseed to stir in high speed dispersor, adds pigment and filler point
Stirring 20-30min is dissipated, the semi-finished product that dispersion is stirred is ground to fineness in sand mill less than 10um then, is eventually adding
Amino resins, cosolvent and auxiliary agent stir, that is, the waterborne metallic paint of the present invention is obtained.
Wherein, the acrylic resin is prepared by the method for comprising the following steps：
（1）50-70 part by weight of n-butanol is added in reactor and is warming up to 105-130 DEG C, Deca contains 8- by 30-50 weight portions
The acrylic acid of 15wt%, the methacrylic acid of 3-8wt%, the ethyl acrylate of 5-8wt%, the butyl acrylate of 20-45wt%, 2-
The butyl methacrylate of 15wt%, the methyl methacrylate of 3-5wt%, the 2-(Acryloyloxy)ethanol of 3-10wt%, the third of 2-5wt%
Olefin(e) acid hydroxypropyl acrylate, the glycidyl methacrylate of 1-5wt%, the acrylic compounds mixing list of the n-octyl of 3-8wt%
The chain-transferring agent group of body, addition for the initiator and 0.05-0.2wt% of acrylic compounds mix monomer weight 0.1-0.5wt%
Into mixed liquor, and control to complete Deca in 3-6 hours；
（2）Reaction system is incubated 1-2 hours, then adds 0.1-0.3 weight portion initiators, taken out after continuing insulation 2-5 hours true
Empty removing n-butyl alcohol；
（3）Subsequently by the temperature of reaction system to less than 70 DEG C, pH value is neutralized to 6- with ammonia or organic amine neuutralizer
7.5, it is 35-60wt% to be eventually adding suitable quantity of water and adjust to solid content.
The waterborne metallic paint of the present invention is with water as solvent, and adds the environmental protection coating material of a small amount of cosolvent, and advantage is：
1）Nonflammable, non-explosive, organic volatile（VOC）Discharge less, environmental protection；2）Simple production process, low cost, levelability
Good, adhesive force height, color inhibition, solid content are high and viscosity is low；3）Have shallow, the Clear ＆ Transparent degree of color high, good protect light colour retention and
Weatherability, film are plentiful, the characteristics of heat-resist；4）Chemical resistance is good, stable to acid, alkali, alcohol, oil etc..
Specific embodiment
For a better understanding of the present invention, it is described in detail with reference to specific embodiment.It is necessary here
It is pointed out that specific examples below is served only for that the invention will be further described, does not represent the limit to the scope of the present invention
System.Other people still fall within protection scope of the present invention according to some nonessential modifications and adjustment that the present invention makes.
Following main component is included according to the waterborne metallic paint that the present invention is provided：The acrylic resin of 30-60wt%, 5-
The polyester resin of 20wt%, the coating amino resins of 4-15wt%, the pigment of 10-40wt%, the filler of 3-10wt%, 0.5-5wt%
Cosolvent, the auxiliary agent of 0.5-3wt% and 10-40%wt water
When the coating is prepared, the polyester tree of the acrylic resin of 30-60wt%, 5-20wt% is weighed first by raw material weight proportioning of soup processed
Fat, the coating amino resins of 4-15wt%, the pigment of 10-40wt%, the filler of 3-10wt%, the cosolvent of 0.5-5wt%, 0.5-
The water of the auxiliary agent and 10-40%wt of 3wt%, then adds the acrylic resin for weighing, polyester resin and water in high speed dispersor
Dispersion stirs, and adds pigment and filler dispersion stirring 20-30min, and the semi-finished product being then stirred dispersion are in sand milling
Fineness is ground in machine less than 10um, amino resins, cosolvent and auxiliary agent is eventually adding and is stirred, that is, the water of the present invention is obtained
Property metallic paint.
Aforesaid propylene acid resin is prepared via a method which：50-70 part by weight of n-butanol is added in reactor and is risen
To 105-130 DEG C, Deca is contained the acrylic acid of 8-15wt%, the methacrylic acid of 3-8wt%, 5-8wt% to temperature by 30-50 weight portions
Ethyl acrylate, the butyl acrylate of 20-45wt%, the butyl methacrylate of 2-15wt%, the methacrylic acid of 3-5wt%
Methyl ester, the 2-(Acryloyloxy)ethanol of 3-10wt%, the Hydroxypropyl acrylate of 2-5wt%, the glycidyl methacrylate of 1-5wt%,
The acrylic compounds mix monomer of the n-octyl of 3-8wt%, addition are acrylic compounds mix monomer weight 0.1-0.5wt%
Initiator and 0.05-0.2wt% chain-transferring agent composition mixed liquor, and control to complete Deca in 3-6 hours；Will reaction
Architecture heat preservation 1-2 hours, then 0.1-0.3 weight portion initiators are added, after continuing insulation 2-5 hours, evacuation removes n-butyl alcohol；
The temperature of reaction system is dropped to less than 70 DEG C subsequently, pH value 6-7.5 is neutralized to ammonia or organic amine neuutralizer, finally
It is 35-60wt% to add suitable quantity of water to adjust to solid content.
In above raw material, the initiator be azodiisobutyronitrile, dibenzoyl peroxide, dicumyl peroxide or
Isopropyl benzene hydroperoxide, preferably dicumyl peroxide；The chain-transferring agent is carbon tetrachloride, butyl mercaptan or normal-butyl sulfur
Ether, preferably butyl mercaptan；The amino resins are HMMM resin, butyl etherified melamine resin
Or benzoguanamine resin, such as 303,1156,659 resins of Qing Te companies；The organic amine neuutralizer includes various organic
Amine, such as triethylamine, dimethylethanolamine, 2,2- dimethylamino -2- methylpropanols, 2- amino-2-methyl propanol, N- ethyls
Quinoline；The cosolvent is isopropyl alcohols, butyl glycol ether class or Propylene Glycol ethers；The auxiliary agent includes levelling agent, dispersant, disappears
Infusion, nertralizer, wherein levelling agent can be organosilicon levelling agent or acrylate levelling agent, and dispersant can be polycarboxylic acids sodium
Dipersant or high-molecular block copolymer dispersant such as polyacrylate block copolymer dispersant, organic block copolymerization
Thing dispersant, defoamer can be antifoaming agent of non-silicone or organic silicon defoamer；The pigment include phthalocyanine blue, permanent yellow,
Paratonere, titanium dioxide；Described filler includes Pulvis Talci, Kaolin, barium sulfate；The nertralizer includes ammonia or organic amine neutralization
Agent, the organic amine neuutralizer include various organic amines, such as triethylamine, dimethylethanolamine, 2,2- dimethylamino -2- methyl-props
Alcohol, 2- amino-2-methyl propanol, N-ethylmorpholine.In described various auxiliary agents, those skilled in the art can be according to reality
Border application needs therefrom to select one or more and is combined uses, it is also possible to further add appropriate other auxiliary agents such as profit
Humectant, brightening agent, water-borne wax etc..
In the coating using the present invention, which is coated on the metal materials such as tinplate, ferrochrome and aluminum with coating machine,
10-45min is dried at 140-180 DEG C, i.e. formation film is somewhat cooled down, and the glossiness height of the film, adhesive force are good, hardness level
For H-2H, stamping resistance, no solvent residue.
The present invention is further described in detail below in reference to preferred embodiment.Wherein, embodiment 1 and 2 is related to third
The preparation of alkene acid ester resin, embodiment 3-6 are related to prepare gold with acrylate prepared by embodiment 1 and 2 as main component
Category coating.
Embodiment 1
Will 55 part by weight of n-butanol add reactor in be warming up to 115 DEG C, Deca contained by 50 weight portions 8wt% acrylic acid,
The methacrylic acid of 7wt%, the ethyl acrylate of 5wt%, the butyl acrylate of 42wt%, the butyl methacrylate of 15wt%,
The methyl methacrylate of 3wt%, the 2-(Acryloyloxy)ethanol of 8wt%, the Hydroxypropyl acrylate of 2wt%, the methacrylic acid contracting of 3wt%
Water glyceride, the n-octyl acrylic compounds mix monomer of 7wt%, the mistake for accounting for acrylic compounds mix monomer weight 0.3wt%
Oxidation isopropylbenzene and the mixed liquor of 0.1wt% butyl mercaptans composition, and control to complete Deca at 5 hours, 2 hours are incubated, then
0.1 weight portion dicumyl peroxide is added, evacuation removes n-butyl alcohol after continuing to be incubated 5 hours, subsequently by the temperature of reaction system
Spend to less than 60 DEG C, then pH value is neutralized to 6.5 with ammonia or organic amine neuutralizer, be eventually adding suitable quantity of water and adjust to containing admittedly
Measure as 45wt%.
Embodiment 2
Will 60 part by weight of n-butanol add reactor in be warming up to 120 DEG C, Deca contained by 40 weight portions 10wt% acrylic acid,
The methacrylic acid of 3wt%, the ethyl acrylate of 8wt%, the butyl acrylate of 37wt%, the butyl methacrylate of 2wt%,
The methyl methacrylate of 20wt%, the 2-(Acryloyloxy)ethanol of 10wt%, the Hydroxypropyl acrylate of 2wt%, the methacrylic acid of 5wt%
Ethylene oxidic ester, the n-octyl acrylic compounds mix monomer of 3wt%, account for acrylic compounds mix monomer weight 0.4wt%
Dicumyl peroxide and the mixed liquor of 0.3wt% butyl mercaptans composition, and control to complete Deca at 6 hours, 2 hours are incubated,
Add 0.1 weight portion dicumyl peroxide again, when continuing insulation 3 after evacuation remove n-butyl alcohol, subsequently by the temperature of reaction system
Spend to less than 60 DEG C, then pH value is neutralized to 6.5 with ammonia or organic amine neuutralizer, be eventually adding suitable quantity of water and adjust to containing admittedly
Measure as 50wt%.
Embodiment 3
Weigh by following weight proportion：The water-soluble resin prepared in embodiment 1：The polyester resin of 30%, 10wt%, hexa methoxy
Methyl melamine resin：4%, triethylamine：0.1%, propylene glycol：0.5%, water：40%, polyacrylic acid ester block copolymer point
Dissipate：1.5%, antifoaming agent of non-silicone 0.5%, acrylate levelling agent 0.4%, paratonere：1%, titanium dioxide：9.0%, barium sulfate：
3%.By the self-control water-soluble resin for weighing, polyester resin, water, polyacrylate block copolymer dispersant and acrylate
Levelling agent dispersion stirs, and adds paratonere, titanium dioxide and barium sulfate dispersion stirring 20min, is ground 3-4 time with sand mill,
Until below fineness 10um, adding the dispersion of HMMM resin, triethylamine, propylene glycol and defoamer to stir
30min is mixed, scattered product water use regulation viscosity obtains final product the aqueous, environmental protective metallic paint of the present invention.
The performance test results are as follows：
Solid content：55%
Product viscosity（Apply 4/30 DEG C）：130S
Baking temperature：170℃
Baking time：15min
Glossiness：85
Adhesive force：One-level
Hardness：H
Impact property（1 KG·50CM）：Positive and negative coating film is not damaged
Heat resistance：40min/200 DEG C of non yellowing of baking.
Embodiment 4
Weigh by following weight proportion：The water-soluble resin prepared in embodiment 1：The polyester resin of 50%, 5wt%, butanol etherification
Melmac：9.7%, dimethylethanolamine：1.0%, butyl glycol ether：5%, water：10%, polycarboxylate sodium's dispersant：
0.5%, organosilicon levelling agent：0.3%, antifoaming agent of non-silicone：0.5%, phthalocyanine blue：5%, titanium dioxide：8%, Pulvis Talci：5%.Will be by
Proportioning weighs the water-soluble resin of preparation, water, polycarboxylate sodium's dispersant and stirs, add phthalocyanine blue, titanium dioxide and
Pulvis Talci dispersion stirring 20min, is ground 3-4 time with sand mill, until below fineness 10um, adding butanol etherification tripolycyanamide tree
Fat, dimethylethanolamine, butyl glycol ether and organosilicon levelling agent, antifoaming agent of non-silicone dispersion stirring 30min, will dispersion
Good product water use regulation viscosity, obtains final product the aqueous, environmental protective metallic paint of the present invention.
The performance test results are as follows：
Solid content：55%
Product viscosity（Apply 4/30 DEG C）：120S
Baking temperature：170℃
Baking time：15min
Glossiness：83
Adhesive force：One-level
Hardness：2H
Impact property（1 KG·50CM）：Positive and negative coating film is not damaged
Heat resistance：40min/200 DEG C of non yellowing of baking.
Embodiment 5
Weigh by following weight proportion：The water-soluble resin prepared in embodiment 1：The polyester resin of 30%, 12wt%, benzene are for trimerization
Melamine resin：6.4%, dimethylethanolamine：0.5%, isopropanol：2%, water：30%, polyacrylate block copolymer dispersant：
0.8%, organosilicon levelling agent：0.3%, permanent yellow：10%, Kaolin 8%.Will by proportioning weigh self-control water-soluble resin, water, poly- third
Olefin(e) acid ester block copolymer dispersant stirs, and adds permanent yellow, Kaolin dispersion stirring 20min, is ground with sand mill
Mill 3-4 time, until below fineness 10um, add benzoguanamine resin, dimethylethanolamine, isopropanol and organosilicon stream
Flat agent dispersion stirring 30min, by scattered product water use regulation viscosity, obtains final product the aqueous, environmental protective metallic paint of the present invention.
The performance test results are as follows：
Solid content：40%
Product viscosity（Apply 4/30 DEG C）：130S
Baking temperature：150℃
Baking time：45min
Glossiness：95
Adhesive force：One-level
Hardness：H
Impact property（1 KG·50CM）：Positive and negative coating film is not damaged
Heat resistance：40min/200 DEG C of non yellowing of baking.
Embodiment 6
Weigh by following weight proportion：The water-soluble resin prepared in embodiment 2：The polyester resin of 32.4%, 20wt%, benzene generation three
Cymel：8%, triethanolamine：0.6%, propylene glycol：2%, water：11%, organic silicon block copolymer dispersant：1%, organic
Silicon levelling agent 0.5%, titanium dioxide：19.5%, Kaolin：5%.Self-control water-soluble resin, water, organic block will be weighed by proportioning
Copolymer dispersant dispersion stir, add titanium dioxide, Kaolin dispersion stirring 20min, with sand mill grind 3-4 time, directly
To fineness 10um, the dispersion stirring of benzoguanamine resin, triethanolamine, propylene glycol and organosilicon levelling agent is added
30min, by scattered product water use regulation viscosity, obtains final product the aqueous, environmental protective metallic paint of the present invention.
The performance test results are as follows：
Solid content：65%
Product viscosity（Apply 4/30 DEG C）：150S
Baking temperature：180℃
Baking time：25min
Glossiness：85
Adhesive force：One-level
Hardness：H
Impact property（1 KG·50CM）：Positive and negative coating film is not damaged
Heat resistance：40min/200 DEG C of non yellowing of baking.
Claims (10)
1. a kind of water-based metal packaging coating, is characterized in that, including the component of following mass percent：The propylene of 30-60wt%
Acid resin, the polyester resin of 5-20wt%, the amino resins of 4-15wt%, the pigment of 10-40wt%, the filler of 3-10wt%, 0.5-
The water of the cosolvent of 5wt%, the auxiliary agent of 0.5-3wt% and 10-40%wt.
2. water-based metal packaging coating according to claim 1, is characterized in that, the acrylic resin is following by including
Prepared by the method for step：
（1）50-70 part by weight of n-butanol is added in reactor and is warming up to 105-130 DEG C, Deca contains 8- by 30-50 weight portions
The acrylic acid of 15wt%, the methacrylic acid of 3-8wt%, the ethyl acrylate of 5-8wt%, the butyl acrylate of 20-45wt%, 2-
The butyl methacrylate of 15wt%, the methyl methacrylate of 3-5wt%, the 2-(Acryloyloxy)ethanol of 3-10wt%, the third of 2-5wt%
Olefin(e) acid hydroxypropyl acrylate, the glycidyl methacrylate of 1-5wt%, the acrylic compounds mixing list of the n-octyl of 3-8wt%
The chain-transferring agent group of body, addition for the initiator and 0.05-0.2wt% of acrylic compounds mix monomer weight 0.1-0.5wt%
Into mixed liquor, and control to complete Deca in 3-6 hours；
（2）Reaction system is incubated 1-2 hours, then adds 0.1-0.3 weight portion initiators, taken out after continuing insulation 2-5 hours true
Empty removing n-butyl alcohol；
（3）Subsequently by the temperature of reaction system to less than 70 DEG C, pH value is neutralized to 6- with ammonia or organic amine neuutralizer
7.5, it is 35-60wt% to be eventually adding suitable quantity of water and adjust to solid content.
3. water-based metal packaging coating according to claim 2, is characterized in that, in the organic amine in step (3)
Mediating recipe includes but is not limited to triethylamine, dimethylethanolamine, 2,2- dimethylamino -2- methylpropanols, 2- amino-2-methyl propanol
With one or more the combination in N-ethylmorpholine.
4. water-based metal packaging coating according to claim 1, is characterized in that, the amino resins are included but is not limited to
HMMM resin, butyl etherified melamine resin or benzoguanamine resin；The cosolvent bag
Include but be not limited to isopropyl alcohols, butyl glycol ether class or Propylene Glycol ethers；The auxiliary agent includes but is not limited to levelling agent, dispersion
One or more in agent, defoamer and nertralizer.
5. water-based metal packaging coating according to claim 4, is characterized in that, the levelling agent is organosilicon levelling agent
Or acrylate levelling agent；The dispersant is polycarboxylate sodium's dispersant or high-molecular block copolymer dispersant；Described disappear
Infusion is antifoaming agent of non-silicone or organic silicon defoamer；The nertralizer includes ammonia or organic amine neuutralizer.
6. water-based metal packaging coating according to claim 5, is characterized in that, the organic amine neuutralizer includes three second
One kind in amine, dimethylethanolamine, 2,2- dimethylamino -2- methylpropanols, 2- amino-2-methyls propanol and N-ethylmorpholine
Or two or more combinations.
7. the water-based metal packaging coating according to any one of claim 1-6, is characterized in that, the pigment includes that phthalein is blue or green
One or more combination in indigo plant, permanent yellow, paratonere and titanium dioxide；Described filler include Pulvis Talci, Kaolin and
One or more combination in barium sulfate.
8. the preparation method of water-based metal packaging coating described in any one of claim 1-7, is characterized in that, first with 30-
The acrylic resin of 60wt%, the polyester resin of 5-20wt%, the coating amino resins of 4-15wt%, the pigment of 10-40wt%, 3-
The proportioning raw materials of the water of the filler of 10wt%, the cosolvent of 0.5-5wt%, the auxiliary agent of 0.5-3wt% and 10-40%wt, weigh each original
The acrylic resin for weighing, polyester resin and water are then added and are disperseed to stir in high speed dispersor, adds pigment by material
With filler dispersion stirring 20-30min, the semi-finished product that dispersion is stirred are ground to fineness in sand mill less than 10um then,
It is eventually adding amino resins, cosolvent and auxiliary agent to stir, obtains final product water-based metal packaging coating.
9. the preparation method of water-based metal packaging coating according to claim 1, is characterized in that, the acrylic resin is
It is prepared from by the method for comprising the following steps：
（1）50-70 part by weight of n-butanol is added in reactor and is warming up to 105-130 DEG C, Deca contains 8- by 30-50 weight portions
The acrylic acid of 15wt%, the methacrylic acid of 3-8wt%, the ethyl acrylate of 5-8wt%, the butyl acrylate of 20-45wt%, 2-
The butyl methacrylate of 15wt%, the methyl methacrylate of 3-5wt%, the 2-(Acryloyloxy)ethanol of 3-10wt%, the third of 2-5wt%
Olefin(e) acid hydroxypropyl acrylate, the glycidyl methacrylate of 1-5wt%, the acrylic compounds mixing list of the n-octyl of 3-8wt%
The chain-transferring agent group of body, addition for the initiator and 0.05-0.2wt% of acrylic compounds mix monomer weight 0.1-0.5wt%
Into mixed liquor, and control to complete Deca in 3-6 hours；
（2）Reaction system is incubated 1-2 hours, then adds 0.1-0.3 weight portion initiators, taken out after continuing insulation 2-5 hours true
Empty removing n-butyl alcohol；
（3）Subsequently by the temperature of reaction system to less than 70 DEG C, pH value is neutralized to 6- with ammonia or organic amine neuutralizer
7.5, it is 35-60wt% to be eventually adding suitable quantity of water and adjust to solid content.
10. it is used for the acrylic resin of water-based metal packaging coating described in claim 1-7, it is characterized in that, following by including
The method of step is prepared from：
（1）50-70 part by weight of n-butanol is added in reactor and is warming up to 105-130 DEG C, Deca contains 8- by 30-50 weight portions
The acrylic acid of 15wt%, the methacrylic acid of 3-8wt%, the ethyl acrylate of 5-8wt%, the butyl acrylate of 20-45wt%, 2-
The butyl methacrylate of 15wt%, the methyl methacrylate of 3-5wt%, the 2-(Acryloyloxy)ethanol of 3-10wt%, the third of 2-5wt%
Olefin(e) acid hydroxypropyl acrylate, the glycidyl methacrylate of 1-5wt%, the acrylic compounds mixing list of the n-octyl of 3-8wt%
The chain-transferring agent group of body, addition for the initiator and 0.05-0.2wt% of acrylic compounds mix monomer weight 0.1-0.5wt%
Into mixed liquor, and control to complete Deca in 3-6 hours；
（2）Reaction system is incubated 1-2 hours, then adds 0.1-0.3 weight portion initiators, taken out after continuing insulation 2-5 hours true
Empty removing n-butyl alcohol；
（3）Subsequently by the temperature of reaction system to less than 70 DEG C, pH value is neutralized to 6- with ammonia or organic amine neuutralizer
7.5, it is 35-60wt% to be eventually adding suitable quantity of water and adjust to solid content.
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| CN114702903A (en) * | 2022-05-10 | 2022-07-05 | 深圳市深赛尔股份有限公司 | Water-based silicon-modified polyester coating and preparation method thereof |
| CN115558386A (en) * | 2022-09-27 | 2023-01-03 | 重庆三峡油漆股份有限公司 | Water-based boiling-resistant baking paint for packaging barrel and preparation method thereof |
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