CN106047053A - Emulsion for high-throwing-power cathode electrophoresis coating and preparation method of emulsion - Google Patents
Emulsion for high-throwing-power cathode electrophoresis coating and preparation method of emulsion Download PDFInfo
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- CN106047053A CN106047053A CN201610382566.4A CN201610382566A CN106047053A CN 106047053 A CN106047053 A CN 106047053A CN 201610382566 A CN201610382566 A CN 201610382566A CN 106047053 A CN106047053 A CN 106047053A
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications
- C09D5/4419—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications with polymers obtained otherwise than by polymerisation reactions only involving carbon-to-carbon unsaturated bonds
- C09D5/443—Polyepoxides
- C09D5/4434—Polyepoxides characterised by the nature of the epoxy binder
- C09D5/4438—Binder based on epoxy/amine adducts, i.e. reaction products of polyepoxides with compounds containing amino groups only
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- 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 relates to the field of coatings, in particular to emulsion for a high-throwing-power cathode electrophoresis coating and a preparation method of the emulsion. The emulsion for the coating is prepared from, by mass, 40-50 parts of aminated modified epoxide resin, 10-20 parts of epoxy polyurethane resin, 10-30 parts of cross-linking agent, 0.1-2 parts of emulgator, 0.1-2 parts of neutralizer and 30-50 parts of deionized water. The aminated modified epoxide resin is prepared from 40-60 parts of bisphenol A epoxy resin, 8-16 parts of solvent methyl isobutyl ketone, 4-16 parts of plasticizer, 10-35 parts of flexible polymer and 3-8 parts of unimolecular amine. The epoxy polyurethane resin is prepared from 10-30 parts of alcohol ether and ketone solvent, 20-35 parts of epoxy resin, 0.5-2 parts of aliphatic amine and 10-25 parts of ketimine resin. The ketimine resin is prepared from 60-80 parts of polyether amine or polyamide and 20-40 parts of butanone or methyl isobutyl ketone.
Description
Technical field
The present invention relates to paint field, be specifically related to a kind of high throwing power cathode electrophoresis dope emulsion and preparation work thereof
Skill.
Background technology
The exploitation of electrophoretic coating comes from the thirties in last century.Exploitation in early days is concentrated mainly on anode electrophoresis dope, because of
The synthesis of this anode electrophoresis dope and coating process comparative maturity, long history, about just have been carried out in the sixties in last century
Industrialization.But in actual applications, owing to anode electrophoresis dope exists the shortcoming of dissolving anode, cause paint liquid to pollute and paint film
Can decline, promote to be developed cathode electrophoresis dope.Owing to cathode electrophoresis dope coated article metal works is negative electrode, so not
Phosphate coating can be damaged；In electrodeposition process, digestion of metallic ion is not had to pollute paint film yet.It addition, because negative electrode has OH-to deposit
, contributing to anticorrosion, the amine of resin itself has preferable wet adhesion, can be substantially improved Corrosion Protection.Therefore negative electrode electricity
Swimming coating has application stability more more preferable than anode electrophoresis dope and paint film property, is widely used in automobile and metal at present
Field of coating.Cathode electrophoresis dope mainly passes through acrylic resin type, epoxy type, polyurethane-type and polybutadiene ene-type by emulsion
Binder resin prepares, but manages not enough in conventional emulsion the formula ruggedness of electrophoretic paint, throwing power and the solidification temperature that obtain
Think.
Summary of the invention
The purpose of the present invention, is the problem in order to solve in background technology, it is provided that a kind of high throwing power cathode electrophoresis dope
By emulsion and preparation technology thereof.
The above-mentioned technical purpose of the present invention has the technical scheme that
A kind of high throwing power cathode electrophoresis dope emulsion, including in parts by mass, amination modifying epoxy resin 40-50 part, ring
Oxygen polyurethane resin 10-20 part, cross-linking agent 10-30 part, emulsifying agent 0.1-2 part, nertralizer 0.1-2 part and deionized water 30-50
Part；
Described amination modifying Formulaion of epoxy resin includes, bisphenol A type epoxy resin 40-60 part, solvent methylisobutyl ketone 8-16,
Plasticizer 4-16 part, flexible polymer 10-35 part and unimolecule amine 3-8 part；
Described epoxy polyurethane resin formula includes, alcohol ethers and ketones solvent 10-30 part, epoxy resin 20-35 part, fatty amine
0.5-2 part, ketimide resin 10-25 part；
Described ketimide resin formula includes, polyetheramine or polyamide 6 0-80 part, butanone or methyl iso-butyl ketone (MIBK) 20-40 part；
Described cross-linking agent is type semienclosed and/or blocked polyurethane includes, aromatic polyisocyanate 5-20 part, alcohol ethers
Compound, heterocycle compound one of them or two or more mixing 3-30 part, polyethers or PCDL 0-80 part, ketone
Kind solvent 0-40 part.
By using, the amination modifying epoxy resin of mixing and epoxy polyurethane resin are as emulsion main material, prepared
Electrophoretic paint has stronger throwing power and electrophoretic paint tank liquor has higher breakdown voltage, and the heat stability of tank liquor is the highest,
And the salt spray resistance of this electrophoretic paint, chemicals-resistant, alkaline-resisting, water resistance is outstanding.
As preferably, the secondary amine i.e. ketone of aminoethyl ethanolamine of a kind of ketimide primary amine in described unimolecule amine
Imines or the diketimine of diethylenetriamines, its consumption at least accounts for the 50% of the total consumption of unimolecule amine, in unimolecule amine
Other unimolecule amine are in butylamine, octylame, diethylamine, methylbutylamine, monoethanolamine, diethanolamine or N-methylethanolamine
Plant or several.
As preferably, the epoxide equivalent of described bisphenol A type epoxy resin is 200～1000, and described flexible polymer is poly-
Ether dihydroxylic alcohols, polyester diol or polyethers diamine, its number-average molecular weight is 400～1500, and described plasticizer is bisphenol-A polyoxy
Vinyl Ether or bisphenol-A polyethenoxy ether.
As preferably, the number-average molecular weight of described amination modifying epoxy resin is 1500～3500.
As preferably, described epoxy resin be epoxide equivalent be the bisphenol A type epoxy resin between 180-1000 or phenolic aldehyde
Modified epoxy, the amine number of described polyamide is 80-380, and molecular weight is 1000-3000.
As preferably, described nertralizer is formic acid, acetic acid, propanoic acid, lactic acid, oxalic acid or other organic acid.
A kind of high throwing power cathode electrophoresis dope emulsion preparation technology, comprises the following steps: 1. prepare amination modifying ring
Epoxy resins；2. epoxy polyurethane resin is prepared；3. by amination modifying epoxy resin 40-50 part and epoxy polyurethane resin 10-20
After part stirring mixing, it is heated to 100-120 DEG C；4. drip or be dividedly in some parts cross-linking agent 10-30 part, be incubated 1.5-2.5 hour；⑤
Cool to 70-90 DEG C, add emulsifying agent 0.1-2 part and nertralizer 0.1-2 part, dispersed with stirring 30-60 minute；6. 30-is cooled to
70 DEG C, add deionized water 30-50 part, continue stirring and obtain emulsion in 30-60 minute.
As preferably, described amination modifying epoxy resin preparation method is, by the bisphenol-A that epoxide equivalent is 200～1000
Type epoxy resin and solvent methylisobutyl ketone, be heated to 110 DEG C together, until bisphenol A type epoxy resin is the most melted, subsequently
Cool to 90 DEG C, add flexible polymer, be heated to 120 DEG C carry out chain extending reaction or heating catalyst in the presence of expand
Chain reaction, is incubated 2 hours；It is cooled to 100 DEG C, after adding appropriate plasticizer and solvent mix homogeneously, adds unimolecule amine, continue
Continuous mixing 2 hours.
As preferably, described epoxy polyurethane process for preparing resins is, by epoxy resin 20-35 part, alcohol ethers and ketone
Solvent 10-30 part stirring and dissolving at 50 DEG C-80 DEG C, is subsequently added fatty amine 0.5-2 part, reacts 2-3 little at 80 DEG C-90 DEG C
Time；After having reacted, at 75 DEG C-90 DEG C, drip ketimide resin 10-25 part, be incubated 1.5-2.5 hour.
As preferably, described cross-linking agent preparation method is, aromatic polyisocyanate 5-20 part is put into reaction pot,
20-50 DEG C is dividedly in some parts or drips alcohol ether compound or heterocycle compound 3-30 part, polyethers or PCDL 0-
80 parts；It is warming up to 70 DEG C-90 DEG C again after being incubated 0.5-2 hour at 30-80 DEG C subsequently and is incubated 1.5-3 hour, add ketones solvent 0-
40 parts, obtain type semienclosed and/or blocked polyurethane curing agent；Wherein, described alcohol ether compound is alcohol ethers list hydroxyl
Based compound, described heterocycle compound is heterocyclic hydroxy-containing compounds..
In sum, beneficial effects of the present invention:
A kind of high throwing power cathode electrophoresis dope emulsion the most of the present invention makes the breakdown voltage of the electrophoretic paint after configuration
>=380V, Ford box method records throwing power >=22cm, strong to the inner chamber film ability of workpiece.
One the most of the present invention high throwing power cathode electrophoresis dope emulsion so that the heat stability of tank liquor is high, groove
Liquid electrophoresis temperature >=35 DEG C, electrodeposited paint film uniformity is good.
One the most of the present invention high throwing power cathode electrophoresis dope emulsion so that the solidification temperature of electrophoretic paint is
160 DEG C of energy-conserving and environment-protective, when tank liquor working solvent content is less than 1.5%, still can normal film.
Detailed description of the invention
Specific examples below is only explanation of the invention, and it is not limitation of the present invention, art technology
The present embodiment can be made after reading this specification by personnel as required does not has the amendment of creative contribution, but as long as
All protected by Patent Law in scope of the presently claimed invention.
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1:
A kind of high throwing power cathode electrophoresis dope emulsion, including in parts by mass, number-average molecular weight is the amination modifying of 2500
Epoxy resin 40 parts, epoxy polyurethane resin 10 parts, cross-linking agent 30 parts, emulsifying agent 0.1 part, acetic acid 0.5 part and deionized water 40
Part；Described amination modifying Formulaion of epoxy resin includes, epoxide equivalent is bisphenol A type epoxy resin 60 parts, the solvent of 200～1000
Methyl iso-butyl ketone (MIBK) 12 parts, bisphenol A polyethenoxy ether 8 parts, number-average molecular weight are polyether Glycols 10 parts and the unimolecule of 1400
Amine 8 parts；Wherein unimolecule amine is made up of the diketimine 4 parts of methylethanolamine 4 parts He diethylenetriamines；The poly-ammonia of described epoxy
Ester resin formula includes, alcohol ethers and ketones solvent 15 parts, and epoxide equivalent is the bisphenol A type epoxy resin 20 parts of 400, diethanol
Amine 0.5 part, ketimide resin 10 parts；Described ketimide resin formula includes, amine number is 80-380, and molecular weight is 1000-
The polyamide of 3000 80 parts, methyl iso-butyl ketone (MIBK) 20 parts；Described cross-linking agent is that blocked polyurethane formula includes, TDI20 part,
Butyl glycol ether 15 parts, PCDL 50 parts, methyl iso-butyl ketone (MIBK) 30 parts.
The preparation technology of above-mentioned high throwing power cathode electrophoresis dope emulsion, comprises the following steps: 1. prepare amination modifying
Epoxy resin, by bisphenol A type epoxy resin 60 parts that epoxide equivalent is 200～1000 and solvent methylisobutyl ketone 12 parts, one
Rising and be heated to 110 DEG C, until bisphenol A type epoxy resin is the most melted, cool to 90 DEG C subsequently, adding number-average molecular weight is 1400
Polyether Glycols 10 parts, be heated to 120 DEG C carry out chain extending reaction or heating catalyst in the presence of carry out chain extending reaction, protect
Temperature 2 hours；It is cooled to 100 DEG C, after adding bisphenol A polyethenoxy ether 8 parts and solvent mix homogeneously, adds methylethanolamine 4
Part and the diketimine 4 parts of diethylenetriamines, continue mixing 2 hours；2. epoxy polyurethane resin is prepared, by epoxy resin 20
Part, alcohol ethers and ketones solvent 10-30 part stirring and dissolving at 50 DEG C-80 DEG C, be subsequently added diethanolamine 0.5 part, 80 DEG C-
React 2-3 hour at 90 DEG C；After having reacted, at 75 DEG C-90 DEG C, drip ketimide resin 10 parts, be incubated 1.5 hours；3. will
After amination modifying epoxy resin 40 parts and epoxy polyurethane resin 10 parts stirring mixing, it is heated to 100-120 DEG C；4. drip or divide
Criticizing and add cross-linking agent 30 parts, be incubated 1.5-2.5 hour, described cross-linking agent preparation method is, 20 parts of TDI are put into reaction pots,
20-50 DEG C is dividedly in some parts butyl glycol ether 3-30 part, PCDL 50 parts；It is incubated 0.5-2 hour subsequently at 30-80 DEG C
After be warming up to again 70 DEG C-90 DEG C be incubated 1.5-3 hour, methylate isobutyl ketone 30 parts, obtain blocked polyurethane curing agent；⑤
Cool to 70-90 DEG C, add emulsifying agent 0.1-2 part and nertralizer 0.1-2 part, dispersed with stirring 30-60 minute；6. 30-is cooled to
70 DEG C, add deionized water 30-50 part, continue stirring and obtain emulsion in 30-60 minute.
Embodiment 2:
A kind of high throwing power cathode electrophoresis dope emulsion, including in parts by mass, number-average molecular weight is 2000 amination modifying rings
Epoxy resins 50 parts, epoxy polyurethane resin 10 parts, cross-linking agent 20 parts, emulsifying agent 0.5 part, acetic acid 0.1 part and deionized water 50 parts；
Described amination modifying Formulaion of epoxy resin includes, epoxide equivalent is 200～1000 bisphenol A type epoxy resin 50 parts, solvent methyl
Isobutyl ketone 16 parts, bisphenol-A polyethenoxy ether 8 parts, number-average molecular weight are polyether Glycols 10 parts and the unimolecule amine 5 of 1000
Part；Wherein unimolecule amine is made up of the ketimide 4 parts of diethanolamine 4 parts He aminoethyl ethanolamine；Described epoxy polyurethane resin
Formula includes, alcohol ethers and ketones solvent 30 parts, and epoxide equivalent is the bisphenol A type epoxy resin 30 parts of 400, diethanolamine 0.5-
2 parts, ketimide resin 20 parts；Described ketimide resin formula includes, molecular weight is the polyamide 60 part of 1000-3000, fourth
Ketone 40 parts；Described cross-linking agent is that type semienclosed polyurethane includes, TDI20 part, diethylene glycol ether 20 parts, Merlon binary
Alcohol 40 parts, butanone 30 parts.
The preparation technology of above-mentioned high throwing power cathode electrophoresis dope emulsion, comprises the following steps: 1. prepare amination modifying
Epoxy resin, by bisphenol A type epoxy resin 50 parts that epoxide equivalent is 200～1000 and solvent methylisobutyl ketone 16 parts, one
Rising and be heated to 110 DEG C, until bisphenol A type epoxy resin is the most melted, cool to 90 DEG C subsequently, adding number-average molecular weight is 1000
Polyether Glycols 10 parts, be heated to 120 DEG C carry out chain extending reaction or heating catalyst in the presence of carry out chain extending reaction, protect
Temperature 2 hours；It is cooled to 100 DEG C, after adding bisphenol-A polyethenoxy ether 8 parts and solvent mix homogeneously, adds diethanolamine 4 parts
With the ketimide 4 parts of aminoethyl ethanolamine, continue mixing 2 hours；2. epoxy polyurethane resin is prepared, by epoxy resin 30 parts,
Alcohol ethers and 30 parts of stirring and dissolving at 50 DEG C-80 DEG C of ketones solvent, be subsequently added diethanolamine 0.5-2 part, at 80 DEG C-90 DEG C
Lower reaction 2-3 hour；After having reacted, at 75 DEG C-90 DEG C, drip ketimide resin 20 parts, be incubated 2 hours；3. amination is changed
Property epoxy resin 50 parts and epoxy polyurethane resin 10 parts stirring mixing after, be heated to 100-120 DEG C；4. drip or be dividedly in some parts
Cross-linking agent 20 parts, is incubated 1.5-2.5 hour, and described cross-linking agent preparation method is, 20 parts of TDI is put into reaction pot, at 20-50 DEG C
It is dividedly in some parts or diethylene glycol ether 20 parts, PCDL 40 parts；After being incubated 0.5-2 hour at 30-80 DEG C subsequently again
It is warming up to 70 DEG C-90 DEG C and is incubated 1.5-3 hour, butanone 30 parts, obtain type semienclosed polyurethane curing agent；5. 70-90 is cooled to
DEG C, add emulsifying agent 0.5 part and acetic acid 0.1 part, dispersed with stirring 30-60 minute；6. cool to 30-70 DEG C, add deionized water
50 parts, continue stirring and obtain emulsion in 30-60 minute.
Embodiment 3:
A kind of high throwing power cathode electrophoresis dope emulsion, including in parts by mass, number-average molecular weight is 3000 amination modifying rings
Epoxy resins 45 parts, epoxy polyurethane resin 20 parts, cross-linking agent 25 parts, emulsifying agent 1 part, acetic acid 0.5 part and deionized water 50 parts；Institute
Stating amination modifying Formulaion of epoxy resin to include, epoxide equivalent is that 200～1000 bisphenol A type epoxy resin 45 parts, solvent methyl are different
Butyl ketone 10 parts, bisphenol A polyethenoxy ether 10 parts, number-average molecular weight are polyether Glycols 20 parts and the unimolecule amine 7 parts of 800；
Wherein unimolecule amine is made up of the ketimide 4 parts of diethanolamine 4 parts He aminoethyl ethanolamine；Described epoxy polyurethane resin formula
Including, alcohol ethers and ketones solvent 20 parts, epoxide equivalent is the bisphenol A type epoxy resin 35 parts of 600, diethanolamine 1 part, and ketone is sub-
Polyimide resin 20 parts；Described ketimide resin formula includes, molecular weight is the polyamide 60 part of 1000-3000, butanone 40 parts；Institute
The cross-linking agent stated is that type semienclosed polyurethane includes, TDI20 part, diethylene glycol ether 20 parts, PCDL 40 parts, fourth
Ketone 30 parts.
The preparation technology of a kind of high throwing power cathode electrophoresis dope emulsion emulsion, comprises the following steps: 1. prepare amine
Change modified epoxy, by bisphenol A type epoxy resin 45 parts and solvent methylisobutyl ketone 10 that epoxide equivalent is 200～1000
Part, it is heated to 110 DEG C together, until bisphenol A type epoxy resin is the most melted, cools to 90 DEG C subsequently, add number-average molecular weight
Be the polyether Glycols 20 parts of 800, be heated to 120 DEG C carry out chain extending reaction or heating catalyst in the presence of to carry out chain extension anti-
Should, it is incubated 2 hours；It is cooled to 100 DEG C, after adding bisphenol A polyethenoxy ether 10 parts and solvent mix homogeneously, adds diethanol
Amine 4 parts and the ketimide 4 parts of aminoethyl ethanolamine, continue mixing 2 hours；2. epoxy polyurethane resin is prepared, by epoxy resin
35 parts, alcohol ethers and 20 parts of stirring and dissolving at 50 DEG C-80 DEG C of ketones solvent, it is subsequently added diethanolamine 1 part, at 80 DEG C-90
React 2-3 hour at DEG C；After having reacted, at 75 DEG C-90 DEG C, drip ketimide resin 20 parts, be incubated 2 hours；3. by amination
After modified epoxy 45 parts and epoxy polyurethane resin 20 parts stirring mixing, it is heated to 100-120 DEG C；4. drip or add in batches
Entering cross-linking agent 25 parts, be incubated 1.5-2.5 hour, described cross-linking agent preparation method is, 20 parts of TDI is put into reaction pot, at 20-50
DEG C it is dividedly in some parts or diethylene glycol ether 20 parts, PCDL 40 parts；Subsequently after 30-80 DEG C of insulation 0.5-2 hour
It is warming up to 70 DEG C-90 DEG C again and is incubated 1.5-3 hour, butanone 30 parts, obtain type semienclosed polyurethane curing agent；5. 70-is cooled to
90 DEG C, add emulsifying agent 1 part and nertralizer 0.5 part, dispersed with stirring 30-60 minute；6. cool to 30-70 DEG C, add deionization
50 parts of water, continues stirring and obtains emulsion in 30-60 minute.
Claims (10)
1. one kind high throwing power cathode electrophoresis dope emulsion, it is characterised in that include in parts by mass, amination modifying asphalt mixtures modified by epoxy resin
Fat 40-50 part, epoxy polyurethane resin 10-20 part, cross-linking agent 10-30 part, emulsifying agent 0.1-2 part, nertralizer 0.1-2 part and go
Ionized water 30-50 part；
Described amination modifying Formulaion of epoxy resin includes, bisphenol A type epoxy resin 40-60 part, solvent methylisobutyl ketone 8-16,
Plasticizer 4-16 part, flexible polymer 10-35 part and unimolecule amine 3-8 part；
Described epoxy polyurethane resin formula includes, alcohol ethers and ketones solvent 10-30 part, epoxy resin 20-35 part, fatty amine
0.5-2 part, ketimide resin 10-25 part；
Described ketimide resin formula includes, polyetheramine or polyamide 6 0-80 part, butanone or methyl iso-butyl ketone (MIBK) 20-40 part；
Described cross-linking agent is type semienclosed and/or blocked polyurethane includes, aromatic polyisocyanate 5-20 part, alcohol ethers
Compound, heterocycle compound one of them or two or more mixing 3-30 part, polyethers or PCDL 0-80 part, ketone
Kind solvent 0-40 part.
One the most according to claim 1 high throwing power cathode electrophoresis dope emulsion, it is characterised in that described unimolecule
In amine, the secondary amine i.e. ketimide of aminoethyl ethanolamine of a kind of ketimide primary amine or the diketone of diethylenetriamines are sub-
Amine, its consumption at least accounts for the 50% of the total consumption of unimolecule amine, other unimolecule amine in unimolecule amine be butylamine, octylame, two
One or more in ethamine, methylbutylamine, monoethanolamine, diethanolamine or N-methylethanolamine.
One the most according to claim 2 high throwing power cathode electrophoresis dope emulsion, it is characterised in that described bisphenol-A
The epoxide equivalent of type epoxy resin is 200～1000, and described flexible polymer is polyether Glycols, polyester diol or polyethers two
Unit's amine, its number-average molecular weight is 400～1500, and described plasticizer is bisphenol A polyethenoxy ether or bisphenol-A polyethenoxy ether.
One the most according to claim 3 high throwing power cathode electrophoresis dope emulsion, it is characterised in that described amination changes
The number-average molecular weight of property epoxy resin is 1500～3500.
One the most according to claim 1 high throwing power cathode electrophoresis dope emulsion, it is characterised in that described asphalt mixtures modified by epoxy resin
Fat be epoxide equivalent be the bisphenol A type epoxy resin between 180-1000 or phenol aldehyde modified epoxy resin, the amine of described polyamide
Value is 80-380, and molecular weight is 1000-3000.
One the most according to claim 5 high throwing power cathode electrophoresis dope emulsion, it is characterised in that described nertralizer
For formic acid, acetic acid, propanoic acid, lactic acid, oxalic acid or other organic acid.
7. one kind high throwing power cathode electrophoresis dope emulsion preparation technology, it is characterised in that comprise the following steps: 1. prepare amine
Change modified epoxy；2. epoxy polyurethane resin is prepared；3. by amination modifying epoxy resin 40-50 part and epoxy polyurethane tree
After the stirring mixing of fat 10-20 part, it is heated to 100-120 DEG C；4. drip or be dividedly in some parts cross-linking agent 10-30 part, be incubated 1.5-2.5
Hour；5. cool to 70-90 DEG C, add emulsifying agent 0.1-2 part and nertralizer 0.1-2 part, dispersed with stirring 30-60 minute；6. drop
Temperature to 30-70 DEG C, adds deionized water 30-50 part, continues stirring and obtains emulsion in 30-60 minute.
One the most according to claim 7 high throwing power cathode electrophoresis dope emulsion preparation technology, it is characterised in that institute
Stating amination modifying epoxy resin preparation method is, by bisphenol A type epoxy resin that epoxide equivalent is 200～1000 and solvent methyl
Isobutyl ketone, is heated to 110 DEG C together, until bisphenol A type epoxy resin is the most melted, cools to 90 DEG C subsequently, adds flexibility
Polymer, be heated to 120 DEG C carry out chain extending reaction or heating catalyst in the presence of carry out chain extending reaction, be incubated 2 hours；Fall
Temperature is to 100 DEG C, after adding appropriate plasticizer and solvent mix homogeneously, adds unimolecule amine, continues mixing 2 hours.
One the most according to claim 7 high throwing power cathode electrophoresis dope emulsion preparation technology, it is characterised in that institute
Stating epoxy polyurethane process for preparing resins is, by epoxy resin 20-35 part, alcohol ethers and ketones solvent 10-30 part at 50 DEG C-80
Stirring and dissolving at DEG C, is subsequently added fatty amine 0.5-2 part, reacts 2-3 hour at 80 DEG C-90 DEG C；After having reacted, 75
Drip ketimide resin 10-25 part at DEG C-90 DEG C, be incubated 1.5-2.5 hour.
One the most according to claim 7 high throwing power cathode electrophoresis dope emulsion preparation technology, it is characterised in that
Described cross-linking agent preparation method is, aromatic polyisocyanate 5-20 part is put into reaction pot, is dividedly in some parts at 20-50 DEG C or drips
Add alcohol ether compound or heterocycle compound 3-30 part, polyethers or PCDL 0-80 part；Subsequently 30-80 DEG C of guarantor
Temperature 0.5-2 hour after be warming up to again 70 DEG C-90 DEG C be incubated 1.5-3 hour, add ketones solvent 0-40 part, obtain type semienclosed and/
Or blocked polyurethane curing agent；Wherein, described alcohol ether compound is alcohol ethers monohydroxy compound, described heterocyclic
Compound is heterocyclic hydroxy-containing compounds.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106905664A (en) * | 2017-04-10 | 2017-06-30 | 立邦涂料（中国）有限公司 | A kind of function polyamine modified microgel, preparation method and its usage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106905664A (en) * | 2017-04-10 | 2017-06-30 | 立邦涂料（中国）有限公司 | A kind of function polyamine modified microgel, preparation method and its usage |
| CN106905664B (en) * | 2017-04-10 | 2020-03-17 | 立邦涂料（中国）有限公司 | Functional polyamine modified microgel, preparation method and application thereof |
| CN114350225A (en) * | 2021-12-25 | 2022-04-15 | 天津市新丽华色材有限责任公司 | Microgel for cathode electrophoretic coating and preparation method thereof |
| CN114350225B (en) * | 2021-12-25 | 2023-03-14 | 天津市新丽华色材有限责任公司 | Microgel for cathode electrophoretic coating and preparation method thereof |
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Application publication date: 20161026 |