CN109233525A - A kind of mental package product inner coating and preparation method thereof - Google Patents
A kind of mental package product inner coating and preparation method thereof Download PDFInfo
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- CN109233525A CN109233525A CN201710352492.4A CN201710352492A CN109233525A CN 109233525 A CN109233525 A CN 109233525A CN 201710352492 A CN201710352492 A CN 201710352492A CN 109233525 A CN109233525 A CN 109233525A
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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
- C09D133/062—Copolymers with monomers not covered by C09D133/06
- C09D133/068—Copolymers with monomers not covered by C09D133/06 containing glycidyl groups
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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
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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- 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
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Abstract
The present invention relates to mental package product inner coating, each component including following quality proportioning: the closure isocyanates of 30~60wt%, the polyester resin of 5~20wt%, the cyanate modified epoxy of 4~16wt%, the pigment of 10~41wt%, the filler of 3~10wt%, the cosolvent of 0.6~5wt%, the auxiliary agent of 0.6~3wt% and the water of 10~41%wt.A kind of acid and alkali-resistance of the present invention, anticorrosive, Environmental Safety mental package product inner coating, and be applied to mental package product internal layer, improve the safety of mental package product and stablize qualitative.
Description
Technical field
The present invention relates to mental package product technique field, in particular to a kind of mental package product inner coating and its preparation
Method.
Background technique
Mental package product is opaque, has good leakproofness, can be recycled and recycles, meets International Environmental Protection requirement, accords with
Future products trend is closed, food packaging applications are widely used to.Mental package product internal layer rust corrosion in order to prevent, usually
It will use coating to coat mental package product internal layer, play protection and beautiful effect.Traditional mental package product
Inner coating mostly uses greatly amino-stoving varnish system, this type coating is made of resin, filler, auxiliary agent, solvent, in mental package product
In coating baking process, formaldehyde gas can be released, atmosphere is polluted, severely compromises human health.
Based on above-mentioned analysis, a kind of acid and alkali-resistance, anticorrosive, Environmental Safety mental package product inner coating are designed, and is answered
For mental package product internal layer, improves the safety of mental package product and stablize qualitative be particularly important.
Utility model content
The object of the present invention is to be directed to existing mental package product, a kind of acid and alkali-resistance, anti-corruption are designed
It loses, the mental package product inner coating of Environmental Safety, and is applied to mental package product internal layer, improve the peace of mental package product
Full property and stablize qualitative.
The invention is realized by the following technical scheme:
A kind of mental package product inner coating provided by the invention, each component including following quality proportioning: 30~
The closure isocyanates of 60wt%, the polyester resin of 5~20wt%, the cyanate modified epoxy of 4~16wt%, 10~
The pigment of 41wt%, the filler of 3~10wt%, the cosolvent of 0.6~5wt%, 0.6~3wt% auxiliary agent and 10~41%wt
Water.
Further, the closure isocyanates is prepared by method comprising the following steps:
(1) 50~72 parts by weight n-amyl alcohols are added in reactor and are warming up to 104~132 DEG C, be added dropwise by 30~50 weight
Part butenoic acid containing 7~16wt%, the ethyl butenoic acid of 3~7wt%, 5~7wt% polyester resin, 20~45wt%'s
Butyl crotonate, the ethyl butyl crotonate of 2~16wt%, the ethyl M Cr of 3~5wt%, the butylene of 3~l0wt%
Sour hydroxyl ethyl ester, the butylene allyl propionate of 2~5wt%, the ethyl butylene acid glycidyl ester of 1~5wt%, the butylene of 3~7wt%
The butylene acids mix monomer of sour n-octyl, the initiator that additive amount is 0.1~0.6wt% of butylene acids mix monomer weight with
And the mixed liquor of the chain-transferring agent composition of 0.05~0.2wt%, and control and be added dropwise in completion in 3~6 hours；
(2) reaction system is kept the temperature 1~2 hour, then adds 0.1~0.3 parts by weight initiator, continue heat preservation 2~5 hours
After vacuumize removing n-amyl alcohol；
(3) then by the temperature of reaction system to 72 DEG C hereinafter, pH value is neutralized to 6 with ammonium hydroxide or organic amine neuutralizer
~7.5, being eventually adding suitable quantity of water and being adjusted to solid content is 35~60wt%.
Organic amine neuutralizer in the step (3) includes various organic amines, such as triethylamine, diethyl ethylene diamine, 2,2-
Dimethylamino -2- ethylpropanol, the combination of one or more of 2- amino -2- ethylpropanol and N-ethylmorpholine.
Cyanate modified epoxy of the present invention is hexa methoxy ethyl melamine resin, butanol etherification melamine
Polyimide resin or benzoguanamine resin；The cosolvent is isopropyl alcohols, butyl glycol ether class or glycerine ethers；It is described to help
Agent includes nano silica, dispersing agent, defoaming agent, neutralizer, and wherein nano silica can be organic silicon nano dioxy
SiClx or butenoic acid phenol nano silica, dispersing agent can be sodium polycarboxylate dipersant or high-molecular block copolymer dispersion
Agent such as polybutene acid esters block copolymer dispersant, organic silicon block copolymer dispersing agent, defoaming agent can be non-organic silicon
Defoaming agent or organic silicon defoamer, the neutralizer include ammonium hydroxide and organic amine neuutralizer, and organic amine neuutralizer includes various having
Machine amine, such as triethylamine, diethyl ethylene diamine, 2,2- dimethylamino -2- ethylpropanols, 2- amino -2- ethylpropanol, N- ethyl
Quinoline；The pigment includes phthalocyanine blue, permanent yellow, paratonere, white powder of admiring；The filler includes talcum powder, kaolin, barium sulfate.
In the various auxiliary agents, those skilled in the art can therefrom select one or more according to the actual application
It is combined use, appropriate other auxiliary agents such as wetting agent, brightening agent, water-borne wax etc. can also further be added.
The second object of the present invention is to providing one kind is used to prepare the above-mentioned internally coated method of mental package product.
Specifically, described to be used to prepare the above-mentioned internally coated method of mental package product, first with the envelope of 30~60wt%
Closing property isocyanates, the polyester resin of 5~20wt%, 4~16wt% the cyanate modified ring of mental package product inner coating
Oxygen resin, the pigment of 10~41wt%, the filler of 3~10wt%, the cosolvent of 0.6~5wt%, 0.6~3wt% auxiliary agent and
The raw material proportioning of the water of 10~41%wt weighs each raw material, then adds weighed closure isocyanates, polyester resin and water
Enter dispersion in high speed disperser to stir evenly, adds pigment and filler dispersion 20~30min of stirring, then dispersion is stirred
Semi-finished product fineness is ground in sand mill lower than l0 μm, be eventually adding cyanate modified epoxy, cosolvent and auxiliary agent
It stirs evenly, obtains mental package product inner coating of the invention.
Wherein, the closure isocyanates is prepared by method comprising the following steps:
(1) 50~72 parts by weight n-amyl alcohols are added in reactor and are warming up to 104~132 DEG C, be added dropwise by 30~50 weight
Butenoic acid of the part containing 7~16wt%, the ethyl butenoic acid of 3~7wt%, the polyester resin of 5~7wt%, 20~45wt%'s
Butyl crotonate, the ethyl butyl crotonate of 2~16wt%, the ethyl M Cr of 3~5wt%, the butylene of 3~10wt%
Acid is through ethyl ester, and the butenoic acid of 2~5wt% is through propyl ester, the ethyl butylene acid glycidyl ester of 1~5wt%, the butylene of 3~7wt%
The butylene acids mix monomer of sour n-octyl, the initiator that additive amount is 0.1~0.6wt% of butylene acids mix monomer weight with
And the mixed liquor of the chain-transferring agent composition of 0.05~0.2wt%, and control and be added dropwise in completion in 3~6 hours；
(2) reaction system is kept the temperature 1~2 hour, then adds 0.1~0.3 parts by weight initiator, continue heat preservation 2~5 hours
After vacuumize removing n-amyl alcohol；
(3) then by the temperature of reaction system to 72 DEG C hereinafter, pH value is neutralized to 6 with ammonium hydroxide or organic amine neuutralizer
~7.5, being eventually adding suitable quantity of water and being adjusted to solid content is 35~60wt%.
Mental package product inner coating of the invention is the environment protection metal packaging for taking water as a solvent, and a small amount of cosolvent being added
Product inner coating, advantage are:
(1) the mental package product inner coating acid and alkali-resistance, anticorrosive, Environmental Safety that the present invention designs, and it is applied to gold
Belong to packing articles internal layer, improve the safety of mental package product and stablizes qualitative.
(2) applied in the mental package product that designs of the present invention nonflammable, non-explosive, organic volatile (VOC) discharge less,
It is environmentally protective.
(3) applied in the mental package product that designs of the present invention simple production process, at low cost, good leveling property, adhesive force it is high,
Color inhibition, solid content are high and viscosity is low.
(4) applied in the mental package product that designs of the present invention have color is shallow, Clear & Transparent degree is high, good guarantor's light colour retention and
Weatherability, film is plentiful, heat-resist feature.
(4) it is good that chemical resistance is applied in the mental package product that the present invention designs, and acid, alkali, alcohol, oil etc. are stablized.
Specific embodiment
For a better understanding of the present invention, it is described in detail With reference to embodiment.It is necessary to herein
It is pointed out that following specific embodiments are served only for that the invention will be further described, do not represent the limit to the scope of the present invention
System.The some nonessential modifications and adjustment that other people make according to the present invention still fall within protection scope of the present invention.
The mental package product inner coating provided according to the present invention includes following main component: the closure of 30~60wt%
Isocyanates, the polyester resin of 5~20wt%, 4~16wt% the cyanate modified asphalt mixtures modified by epoxy resin of mental package product inner coating
Rouge, the pigment of 10~41wt%, the filler of 3~l0wt%, the cosolvent of 0.6~5wt%, the auxiliary agent of 0.6~3wt% and 10~
The water of 41%wt is weighed the closing of 30~60wt% when preparing the mental package product inner coating by raw material weight proportioning of soup processed first
Property isocyanates, the cyanate modified epoxy of mental package product inner coating of the polyester resin of 5~20wt%, 4~16wt%
Resin, the pigment of 10~41wt%, the filler of 3~10wt%, the cosolvent of 0.6~5wt%, the auxiliary agent of 0.6~3wt% and 10
Weighed closure isocyanates, poly- phenol resin and water are then added and disperse to stir in high speed disperser by the water of~41%wt
Uniformly, pigment and filler dispersion 20~30min of stirring are added, then grinds the semi-finished product that dispersion is stirred in sand mill
It is lower than l0 μm to fineness, is eventually adding cyanate modified epoxy, cosolvent and auxiliary agent and stirs evenly, obtain of the invention
Mental package product inner coating.
Above-mentioned closure isocyanates is prepared via a method which: reactor is added in 50~72 parts by weight n-amyl alcohols
In be warming up to 104~1320C, be added dropwise and contain the butenoic acid of 7~16wt%, the ethyl butylene of 3~7wt% by 30~50 parts by weight
The butenoic acid ethyl of acid, 5~7wt%, the butyl crotonate of 20~45wt%, the ethyl butyl crotonate of 2~16wt%, 3~
The ethyl M Cr of 5wt%, the butenoic acid hydroxyl diethylstilbestrol of 3~lOwt%, the butenoic acid of 2~5wt% is through propyl ester, l~5wt%
Ethyl butylene acid glycidyl ester, 3~7wt% the butylene acids mix monomer of butenoic acid n-octyl, additive amount be butylene
The mixed liquor of the chain-transferring agent composition of the initiator and 0.05~0.2wt% of 0.1~0.6wt% of acids mix monomer weight,
And it controls and is added dropwise in completion in 3~6 hours；Reaction system is kept the temperature 1~2 hour, then adds 0.1~0.3 parts by weight initiator, after
Continuation of insurance temperature vacuumized removing n-amyl alcohol after 2~5 hours；Then by the temperature of reaction system drop to 72 DEG C hereinafter, with ammonium hydroxide or
PH value is neutralized to 6~7.5 by organic amine neuutralizer, and being eventually adding suitable quantity of water and being adjusted to solid content is 35~60wt%.
In above raw material, the initiator be azobisisobutyronitrile, diphenyl peroxide first phthalein, dicumyl peroxide or
Isopropyl benzene hydroperoxide, preferably dicumyl peroxide；The chain-transferring agent is carbon tetrachloride, butyl mercaptan or normal-butyl sulphur
Ether, preferably butyl mercaptan；The cyanate modified epoxy is hexa methoxy ethyl melamine resin, butanol etherification three
Cymel or benzoguanamine resin；The organic amine neuutralizer includes various organic amines, such as triethylamine, diethyl second
Hydramine, 2,2- dimethylamino -2- ethylpropanols, 2- amino -2- ethylpropanol, N-ethylmorpholine；The cosolvent is isopropanol
Class, butyl glycol ether class or glycerine ethers；The auxiliary agent includes nano silica, dispersing agent, defoaming agent, neutralizer,
Middle nano silica can be organic silicon nano silica or butenoate nano silica, and dispersing agent can be poly- carboxylic
Acid sodium-salt dispersing agent or high-molecular block copolymer dispersing agent such as polybutene acid esters block copolymer dispersant, organic block
Copolymer dispersant, defoaming agent can be antifoaming agent of non-silicone or organic silicon defoamer；The pigment includes phthalocyanine blue, consolidates forever
Huang, paratonere, white powder of admiring；The filler includes talcum powder, kaolin, barium sulfate；The neutralizer includes ammonium hydroxide or organic amine
Neutralizer, the organic amine neuutralizer include various organic amines, such as triethylamine, diethyl ethylene diamine, 2,2- dimethylamino -2- second
Base propyl alcohol, 2- amino -2- ethylpropanol, N-ethylmorpholine.In the various auxiliary agents, those skilled in the art can root
It needs therefrom to select one or more according to practical application and is combined use, other appropriate auxiliary agents can also further be added
Such as wetting agent, brightening agent, water-borne wax.
When using mental package product inner coating of the invention, it is coated in tinplate, ferrochrome and aluminium with coating machine
On equal metal materials, dry 10~45min at 141~172 DEG C, slightly cooling to form film, the glossiness of the film is high, attached
Put forth effort, hardness level is H~2H, stamping resistance, no solvent residue.
Below in reference to the further the present invention is described in detail of preferred embodiment.Wherein, Examples 1 and 2 are related to fourth
The preparation of alkene acid ester resin, embodiment 3~6 are related to the butenoate resin prepared using Examples 1 and 2 and prepare gold as main component
Belong to mental package product inner coating.
Embodiment 1
56 parts by weight n-amyl alcohols are added in reactor and are warming up to 1160C, the butylene for containing 7wt% by 50 parts by weight is added dropwise
The ethyl butenoic acid of acid, 7wt%, the butyl crotonate of the polyester resin of 5wt%, 42wt%, the ethyl butenoic acid fourth of 16wt%
Ester, the ethyl M Cr of 3wt%, 7wt% butenoic acid antelope ethyl ester, the butenoic acid hydroxypropyl acrylate of 2wt%, the ethyl of 3wt%
Butylene acid glycidyl ester, the butenoic acid n-octyl butylene acids mix monomer of 7wt% account for butylene acids mix monomer weight
The mixed liquor of dicumyl peroxide and 0.1wt% the butyl mercaptan composition of 0.3wt%, and control and be added dropwise in completion in 5 hours,
Heat preservation 2 hours, then 0.1 parts by weight dicumyl peroxide is added, removing n-amyl alcohol is vacuumized after continuing heat preservation 5 hours, then will
The temperature of reaction system is eventually adding appropriate to 60 DEG C hereinafter, pH value is neutralized to 6.5 with ammonium hydroxide or organic amine neuutralizer again
It is 45wt% that water, which is adjusted to solid content,.
Embodiment 2
60 parts by weight n-amyl alcohols are added in reactor and are warming up to 120 DEG C, the fourth for containing l0wt% by 41 parts by weight is added dropwise
The ethyl butenoic acid of olefin(e) acid, 3wt%, the butenoic acid ethyl of 7wt%, the butenoic acid fourth phenol of 37wt%, the ethyl butenoic acid of 2wt%
The ethyl butenoic acid cresols of butyl ester, 20wt%, the butenoic acid of l0wt% through diethylstilbestrol, the butenoic acid of 2wt% through propyl ester, 5wt%'s
Ethyl butylene acid glycidyl ester, the butenoic acid n-octyl butylene acids mix monomer of 3wt% account for butylene acids mix monomer weight
The dicumyl peroxide of 0.4wt% and the mixed liquor of 0.3wt% butyl mercaptan composition are measured, and controls and is dripped in completion in 6 hours
Add, keep the temperature 2 hours, then add 0.1 parts by weight dicumyl peroxide, when continuing heat preservation 3 after vacuumize removing n-amyl alcohol, then will
The temperature of reaction system is eventually adding appropriate to 60 DEG C hereinafter, pH value is neutralized to 6.5 with ammonium hydroxide or organic amine neuutralizer again
It is 50wt% that water, which is adjusted to solid content,.
Embodiment 3
It is weighed by following weight proportion: the water-soluble resin prepared in embodiment 1: the polyester resin of 30%, 10wt%, six
Methoxy ethyl melamine resin: 4%, triethylamine: 0.1%, glycerine ether: 0.6%, water: 41%, polybutene acid esters block
Copolymer dispersion: 1.5%, antifoaming agent of non-silicone 0.6%, butenoate nano silica 0.4%, paratonere: 1%, by the emperor himself
White powder: 9.0%, barium sulfate: 3%.By weighed self-control water-soluble resin, polyester resin, water, polybutene acid esters block copolymer
Dispersing agent and butenoate
Nano silica dispersion stirs evenly, and paratonere, by the emperor himself white powder and barium sulfate dispersion stirring 20min is added, uses sand
Grinding machine is ground 3~4 times, until l0 μm of fineness is hereinafter, be added hexa methoxy ethyl melamine resin, triethylamine, glycerine ether
And defoaming agent dispersion stirring 30min, scattered product water use regulation viscosity in mental package product of the invention to get applying
Layer.
The performance test results are as follows:
Solid content: 56%
Product viscosity (applies 4/30 DEG C): 132S
Baking temperature: 172 DEG C
Baking time: 16min
Glossiness: 78
Adhesive force: level-one
Hardness: H
((1KG.50CM): positive and negative coating film is not damaged for impact property
Heat resistance: 41min/200 DEG C of non yellowing of baking.
Embodiment 4
It is weighed by following weight proportion: the water-soluble resin prepared in embodiment 1: the polyester resin of 50%, 5wt%, fourth
Etherified melamine resin: 9.7%, diethyl ethylene diamine: 1.0%, butyl glycol ether: 5%, water: 10%, polycarboxylate sodium
Dispersing agent: 0.6%, organic silicon nano silica: 0.3%, antifoaming agent of non-silicone: 0.6%, phthalocyanine blue: 5%, white powder by the emperor himself:
7%, talcum powder: 5%.The water-soluble resin for weighing preparation according to the ratio, water, poly- acid sodium-salt dispersing agent of completing are dispersed to stir evenly,
Be added phthalocyanine blue, admire white powder and talcum powder dispersion stirring 20min, with sand mill grind 3~4 times, until l0 μm of fineness hereinafter, plus
Enter butyl etherified melamine resin, diethyl ethylene diamine, butyl glycol ether and organic silicon nano silica, non-organic silicon
Defoaming agent dispersion stirring 30min will be applied in mental package product of the scattered product water use regulation viscosity to get wood invention
Layer.
The performance test results are as follows:
Solid content: 56%
Product viscosity (applies 4/30 DEG C): 120S
Baking temperature: 172 DEG C
Baking time: 16min
Glossiness: 73
Adhesive force: level-one
Hardness: 2H
Impact property (1KG50CM): positive and negative coating film is not damaged
Heat resistance: 41min/200 DEG C of non yellowing of baking.
Embodiment 5
It is weighed by following weight proportion: the water-soluble resin prepared in embodiment 1: polyester resin, the benzene of 30%, 12wt%
Substituted melamine resin: 6.4%, diethyl ethylene diamine: 0.6%, isopropanol: 2%, water: 30%, polybutene acid esters block copolymerization
Object dispersing agent:
0.7%, organic silicon nano silica: 0.3%, permanent yellow: 10%, kaolin 7%.Self-control will be weighed according to the ratio
Water-soluble resin, water, the dispersion of polybutene acid esters block copolymer dispersant stir evenly, and permanent yellow are added, kaolin dispersion is stirred
20min is mixed, is ground 3~4 times with sand mill, until l0 μm of fineness is hereinafter, be added benzoguanamine resin, diethylaluminum ethoxide
Amine, isopropanol and organic silicon nano silica dispersion stirring 30min, by scattered product water use regulation viscosity to get
Mental package product inner coating of the invention.
The performance test results are as follows:
Solid content: 41%
Product viscosity (applies 4/30 DEG C): 132S
Baking temperature: 160 DEG C
Baking time: 45min
Glossiness: 95
Adhesive force: level-one
Hardness: H
Impact property (1KG.50CM): positive and negative coating film is not damaged
Heat resistance: 41min/200 DEG C of non yellowing of baking.
Embodiment 6
It is weighed by following weight proportion: the water-soluble resin prepared in embodiment 2: the poly- phenol resin of 32.4%, 20wt%,
Benzoguanamine resin: 7%, triethanolamine: 0.6%, glycerine ether: 2%, water: 11%, organic silicon block copolymer dispersion
Agent: 1%, organic silicon nano silica 0.6%, white powder by the emperor himself: 19.5%, kaolin: 5%.It is water-soluble that self-control will be weighed according to the ratio
Property resin, water, organic silicon block copolymer dispersing agent dispersion stir evenly, be added admire white powder, kaolin dispersion stirring 20min,
With sand mill grind 3~4 times, until 10 μm of fineness hereinafter, be added benzoguanamine resin, triethanolamine, glycerine ether with
And organic silicon nano silica dispersion stirring 30min, by scattered product water use regulation viscosity to get metal of the invention
Packing articles inner coating.
The performance test results are as follows:
Solid content: 65%
Product viscosity (applies 4/30 DEG C): 160S
Baking temperature: 172 DEG C
Baking time: 25min
Glossiness: 78
Adhesive force: level-one
Hardness: H
((1KG50CM): positive and negative coating film is not damaged for impact property
Heat resistance: 41min/200 DEG C of non yellowing of baking.
As described above, the present invention can be applied.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of mental package product inner coating, each component including following quality proportioning: the closure isocyanide of 30~60wt%
Acid esters, the polyester resin of 5~20wt%, the cyanate modified epoxy of 4~16wt%, the pigment of 10~41wt%, 3~
The filler of 10wt%, the cosolvent of 0.6~5wt%, the auxiliary agent of 0.6~3wt% and the water of 10~41%wt.
2. mental package product inner coating according to claim 1, which is characterized in that the closure isocyanates be by
Method comprising the following steps preparation:
(1) 50~72 parts by weight n-amyl alcohols are added in reactor and are warming up to 104~132 DEG C, dropwise addition is contained by 30~50 parts by weight
There are the polyester resin of the butenoic acid of 7~16wt%, the ethyl butenoic acid of 3~7wt%, 5~7wt%, the butylene of 20~45wt%
Acid butyl ester, the ethyl butyl crotonate of 2~16wt%, the ethyl M Cr of 3~5wt%, the butenoic acid hydroxyl of 3~l0wt%
Ethyl ester, the butylene allyl propionate of 2~5wt%, the ethyl butylene acid glycidyl ester of 1~5wt%, the butenoic acid of 3~7wt% is just
The butylene acids mix monomer of monooctyl ester, the initiator that additive amount is 0.1~0.6wt% of butylene acids mix monomer weight and
The mixed liquor of the chain-transferring agent composition of 0.05~0.2wt%, and control and be added dropwise in completion in 3~6 hours；
(2) reaction system is kept the temperature 1~2 hour, then adds 0.1~0.3 parts by weight initiator, taken out after continuing heat preservation 2~5 hours
N-amyl alcohol is removed in vacuum；
(3) then by the temperature of reaction system to 72 DEG C hereinafter, pH value is neutralized to 6 with ammonium hydroxide or organic amine neuutralizer~
7.5, being eventually adding suitable quantity of water and being adjusted to solid content is 35~60wt%.
Organic amine neuutralizer in the step (3) includes various organic amines, such as triethylamine, diethyl ethylene diamine, 2,2- diformazans
Amino -2- ethylpropanol, the combination of one or more of 2- amino -2- ethylpropanol and N-ethylmorpholine.
3. mental package product inner coating according to claim 1, which is characterized in that the cyanate modified epoxy
For hexa methoxy ethyl melamine resin, butyl etherified melamine resin or benzoguanamine resin.
4. mental package product inner coating according to claim 1, which is characterized in that cosolvent is isopropyl alcohols, second two
Alcohol butyl ether class or glycerine ethers.
5. mental package product inner coating according to claim 1, which is characterized in that auxiliary agent include nano silica,
Dispersing agent, defoaming agent, neutralizer, wherein nano silica can be organic silicon nano silica or butenoic acid phenol nanometer two
Silica, dispersing agent can be sodium polycarboxylate dipersant or high-molecular block copolymer dispersing agent such as polybutene acid esters block
Copolymer dispersant, organic silicon block copolymer dispersing agent, defoaming agent can be antifoaming agent of non-silicone or organic silicon defoamer,
The neutralizer includes ammonium hydroxide and organic amine neuutralizer, and organic amine neuutralizer includes various organic amines, such as triethylamine, diethyl second
Hydramine, 2,2- dimethylamino -2- ethylpropanols, 2- amino -2- ethylpropanol, N-ethylmorpholine；The pigment include phthalocyanine blue,
Permanent yellow, paratonere, white powder of admiring；The filler includes talcum powder, kaolin, barium sulfate.
6. according to claim 1 to the internally coated preparation method of mental package product described in 5 any one, which is characterized in that
First with the closure isocyanates of 30~60wt%, the polyester resin of 5~20wt%, 4~16wt% coating cyanate
Modified epoxy, the pigment of 10~41wt%, the filler of 3~10wt%, the cosolvent of 0.6~5wt%, 0.6~3wt%
The raw material proportioning of the water of auxiliary agent and 10~41%wt, weighs each raw material, then by weighed closure isocyanates, polyester resin
It is added in high speed disperser with water and disperses to stir evenly, add pigment and filler dispersion 20~30min of stirring, it then will dispersion
The semi-finished product being stirred are ground to fineness lower than l0 μm in sand mill, are eventually adding cyanate modified epoxy, cosolvent
It is stirred evenly with auxiliary agent, obtains mental package product inner coating of the invention.
7. the internally coated preparation method of mental package product according to claim 6, which is characterized in that the closure is different
Cyanate is prepared by method comprising the following steps:
(1) 50~72 parts by weight n-amyl alcohols are added in reactor and are warming up to 104~132 DEG C, dropwise addition is contained by 30~50 parts by weight
There are the butenoic acid of 7~16wt%, the ethyl butenoic acid of 3~7wt%, the polyester resin of 5~7wt%, the butylene of 20~45wt%
Acid butyl ester, the ethyl butyl crotonate of 2~16wt%, the ethyl M Cr of 3~5wt%, the butenoic acid warp of 3~10wt%
Ethyl ester, the butenoic acid of 2~5wt% is through propyl ester, and the ethyl butylene acid glycidyl ester of 1~5wt%, the butenoic acid of 3~7wt% is just
The butylene acids mix monomer of monooctyl ester, the initiator that additive amount is 0.1~0.6wt% of butylene acids mix monomer weight and
The mixed liquor of the chain-transferring agent composition of 0.05~0.2wt%, and control and be added dropwise in completion in 3~6 hours；
(2) reaction system is kept the temperature 1~2 hour, then adds 0.1~0.3 parts by weight initiator, taken out after continuing heat preservation 2~5 hours
N-amyl alcohol is removed in vacuum；
(3) then by the temperature of reaction system to 72 DEG C hereinafter, pH value is neutralized to 6 with ammonium hydroxide or organic amine neuutralizer~
7.5, being eventually adding suitable quantity of water and being adjusted to solid content is 35~60wt%.
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