CN104592866B - A kind of organosilicon modified polyester coiled material finishing paint and preparation method thereof - Google Patents
A kind of organosilicon modified polyester coiled material finishing paint and preparation method thereof Download PDFInfo
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- CN104592866B CN104592866B CN201510056944.5A CN201510056944A CN104592866B CN 104592866 B CN104592866 B CN 104592866B CN 201510056944 A CN201510056944 A CN 201510056944A CN 104592866 B CN104592866 B CN 104592866B
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/68—Polyesters containing atoms other than carbon, hydrogen and oxygen
- C08G63/695—Polyesters containing atoms other than carbon, hydrogen and oxygen containing silicon
- C08G63/6954—Polyesters containing atoms other than carbon, hydrogen and oxygen containing silicon derived from polxycarboxylic acids and polyhydroxy compounds
- C08G63/6956—Dicarboxylic acids and dihydroxy compounds
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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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
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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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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention discloses a kind of coil coating and preparation method thereof, especially a kind of organosilicon modified polyester coiled material finishing paint and preparation method thereof；The object of the present invention is to provide a kind of product drying speed is fast, storage is stables, not stratified, have fabulous application property, relatively low VOC, reduce environmental pollution, reduce and manufacture cost and properties of product reach a kind of organosilicon modified polyester coiled material finishing paint and preparation method thereof of professional standard；It is made of the silicone modified polyester resin containing weight ratio 40%~60%, 8%~15% amino resins, 10%~20% pigment, 10%~20% blanc fixe, 0.3%~0.8% dispersant, 0.3%~0.8% UV absorbents, 0.4%~1.0% enclosed type acid catalyst, 0.3%~0.8% levelling agent, 0.3%~0.8% defoamer and 5%~15% solvent.
Description
Technical field
The present invention relates to a kind of coil coating and preparation method thereof, especially a kind of organosilicon modified polyester coiled material finishing paint and
Its preparation method.
Background technology
The history of production, the development existing decades of coil coating at home.With the high speed development of economic construction of China,
The demand of coil coating is increasing, and the requirement to its performance is also higher and higher.At present, Polyester resin lacquer is coil coating
The kind of dosage maximum.Polyester resin composition has very high changeability, has splendid deformation again under preferable case hardness
Property, with extremely strong metal adhesive power especially in macromolecule line style copolyester, the paint film formed have it is bright, plentiful,
The good physical mechanical property such as hardness height and preferable resistance to chemical corrosion.But the heat resistance of polyester resin is poor,
Anti-yellowing property is low, and weather resistance is poor.In order to improve the heat-resisting weathering performance of polyester resin, commonly use other resins and it is changed
Learn and be modified.Organic siliconresin has good heat resistance and weather resistance, can be with using organic siliconresin modified polyester resin
Improve the heat-resisting weather resistance and chemical resistance of polyester resin.
Such as the development of the durable coiled material finishing paint of organosilicon modified polyester type of the big ring of Lee, coatings industry, 2007,37 (12),
30-32, prepares organic siliconresin modified poly ester, made from the modified poly ester of acquisition by hydroxyl polyester and organic siliconresin reaction
Coil coating has good anti-aging property.But a large amount of organic siliconresins have been used in the above method, cause modified poly ester
Pliability and adhesive force decline.
Solved in view of the above problems, being badly in need of us.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of product drying speed is fast, storage is stable, no
Be layered, have fabulous application property, relatively low VOC, reduce environmental pollution, reduce manufacture cost and properties of product reach industry mark
Accurate a kind of organosilicon modified polyester coiled material finishing paint and preparation method thereof.
In order to achieve the above object, a kind of organosilicon modified polyester coiled material finishing paint designed by the present invention, it is by containing weight
Silicone modified polyester resin of the amount than 40%~60%, 8%~15% amino resins, 10%~20% pigment, 10%
~20% blanc fixe, 0.3%~0.8% dispersant, 0.3%~0.8% UV absorbents, 0.4%~1.0%
Enclosed type acid catalyst, 0.3%~0.8% levelling agent, 0.3%~0.8% defoamer and 5%~15% solvent structure
Into, and the summation matched is 100%；Wherein, silicone modified polyester resin by 10~15 parts M-phthalic acid, 6~8 parts
Adipic acid, 3~6 parts of Isosorbide-5-Nitrae-cyclohexane cyclohexanedimethanodibasic, 8~14 parts of neopentyl glycol, 5~7 parts of ethyl butyl propanediol, 6~8
2,2,4- trimethyl -1,3- the pentanediols, 0.05~0.12 part of Mono-n-butyltin catalyst, 10~20 parts of organosilicon of part
Intermediate, 1.5~2.5 parts of flow back dimethylbenzene, 2~2.5 parts of trimellitic anhydride, 25~30 parts No. 100 aromatic solvents and 5
~8 parts of butanol composition, and the summation matched is 100 parts.
Wherein, amino resins is high Amino resin or butylated amino resin.
Wherein, dispersant is dimethyl silicone polymer, low molecular weight unsaturation polycarboxylic acid polymers and polysiloxanes
Copolymer.
Wherein, UV absorbents are 2-hydroxy-4-n-octoxybenzophenone, in the derivative of 2- hydroxy phenyl benzotriazole
One or more.
Wherein, enclosed type acid catalyst is one in dodecyl benzene sulfonic acid, dinonylnaphthalene sulfonic acid, dinonylnaphthalene disulfonic acid
Kind is several.
Wherein, levelling agent is polyether-modified dimethyl silicone polymer or polyester modification dimethyl silicone polymer.
Wherein, defoamer is isocyanate-modified acrylate or polyether polyester modified organic silicon.
Wherein, solvent is the one or more in dimethylbenzene, butyl ether, aromatic hydrocarbons.
Wherein, pigment is titanium dioxide, phthalocyanine blue, iron oxide red, carbon black powder or organic yellow.
A kind of preparation method of organosilicon modified polyester coiled material finishing paint is：
The first step, the preparation of silicone modified polyester resin：In the reaction that one is equipped with blender, condenser, heater
In device, add the M-phthalic acid of 10~15g, the adipic acid of 6~8g, Isosorbide-5-Nitrae-cyclohexane cyclohexanedimethanodibasic of 3~6g, 8~14g it is new
Pentanediol, the ethyl butyl propanediol of 5~7g, the 2,2,4- trimethyl -1,3- pentanediols of 6~8g, the only son of 0.05~0.12g
Base tin oxide catalysts, after adding, are warming up to 160 DEG C, when insulation 3 is small, are then warming up to 180 DEG C, when insulation 1 is small, Ran Houzai
200 DEG C are warming up to, when insulation 1 is small, is finally warming up to 220~230 DEG C, keeps the temperature, the organosilicon of addition 10~20g transparent to material
Intermediate, the reflux dimethylbenzene of 1.5~2.5g, in 220 DEG C of insulations, when esterification 2~3 is small, surveys acid number and is less than 3mgKOH/g
When, 200 DEG C are cooled to, adds the trimellitic anhydride of 2~2.5g, then at 220 DEG C of insulation esterifications, is less than to acid number is surveyed
During 15mgKOH/g, 200 DEG C are cooled to, adds No. 100 aromatic solvents of 25~30g, the butanol of 5~8g carries out latting drown, gained
Silicone modified polyester resin solid content is 60 ± 2%, and viscosity is 110~135KU, and acid number is 5~9mgKOH/g.
Second step, the preparation of organosilicon modified polyester coiled material finishing paint：40~60 parts of organosilicon is put into Scattered Kettle to change
Property polyester resin, 0.3~0.8 part of dispersant, 5~10 parts of solvent, after first high speed dispersion is uniform, add 10~20 parts of face
Material, 10~20 parts of filler are sanded to fineness after fully stirring evenly and basically reach≤20 μm, the levelling agent of 0.3~0.8 part of addition, 8
~15 parts of amino resins, 0.3~0.8 part of defoamer, 0.3~0.8 part of UV absorbents and 0.4~1.0 part of acid catalysis
Agent, and stir, with remaining 5~10 parts of solvent adjustment viscosity to painting -4.
In accordance with the above, a kind of organosilicon modified polyester coiled material finishing paint designed by the present invention and preparation method thereof, will
Polyester resin and organic siliconresin combine the advantages of can having the two concurrently, mutually cover the shortage, so as to greatly improve resin
Performance, extend its use scope；The organosilicon modified polyester coiled material finishing paint solidification temperature of production is prepared with the method for the present invention
216 DEG C are down to, hardening time is reduced to 30s, there is fabulous application property, and paint film possesses high-decoration, high richness, has good
Adhesive force well, stamping resistance processability, mar-resistance, chemical-resistant, have excellent weatherability, save the energy, reduce system
This is caused, properties of product are good far more than professional standard, economic benefit.
Embodiment
Embodiment 1：
A kind of organosilicon modified polyester coiled material finishing paint of the present embodiment description, it is by organic-silicon-modified containing weight ratio 500g
Polyester resin, 90g amino resins, 30g phthalocyanine blues, 80g titanium dioxides, 1g organic yellows, 90g blanc fixes, 90g sulfate precipitates
Barium, 4g dimethyl silicone polymers, the copolymer of low molecular weight unsaturation polycarboxylic acid polymers and polysiloxanes, 3g2- hydroxyls-
4- oxy-octyl benzophenones, 5g dodecyl benzene sulfonic acid, the polyether-modified dimethyl silicone polymers of 3g or the poly- diformazan of polyester modification
The isocyanate-modified acrylate of radical siloxane, 3g or polyether polyester modified organic silicon and 100g dimethylbenzene are formed；Wherein, it is organic
Silicon-modified polyester resin is by 10g M-phthalic acids, 8g adipic acids, 6g1,4- cyclohexane cyclohexanedimethanodibasics, 8g neopentyl glycols, 7g ethyl fourths
Base propane diols, 7g2,2,4- trimethyl -1,3- pentanediols, 0.08g tin catalysts, 20g silicone intermediates, 2.5g reflux diformazans
Benzene, 2.5g trimellitic anhydrides, No. 100 aromatic solvents of 25g and 6g butanol composition.
A kind of preparation method of organosilicon modified polyester coiled material finishing paint is：
The first step, the preparation of silicone modified polyester resin：In the reaction that one is equipped with blender, condenser, heater
In device, 10g M-phthalic acids, 8g adipic acids, 6g1 are added, 4- cyclohexane cyclohexanedimethanodibasics, 8g neopentyl glycols, 7g ethyl-butyls the third two
Alcohol, 7g2,2,4- trimethyl -1,3- pentanediols, 0.08g tin catalysts, after adding, are warming up to 160 DEG C, when insulation 3 is small, then
180 DEG C, when insulation 1 is small are warming up to, 200 DEG C is then warming up to again, when insulation 1 is small, it is saturating to material to be finally warming up to 220 DEG C of insulations
It is bright, 20g silicone intermediates are added, 2.5g reflux dimethylbenzene, when 220 DEG C of insulation esterifications 2 are small, survey acid number and be less than
During 3mgKOH/g, 200 DEG C of addition 2.5g trimellitic anhydrides are cooled to, then at 220 DEG C of insulation esterifications, are less than to acid number is surveyed
During 15mgKOH/g, cool to 200 DEG C, add No. 100 aromatic solvents of 25g, 6g butanol carries out latting drown, gained it is organic-silicon-modified
Polyester resin solid content is 60.8%, viscosity 113KU, acid number 7.3mgKOH/g.
Second step, the preparation of organosilicon modified polyester coiled material finishing paint：In Scattered Kettle, the organic-silicon-modified poly- of 500g is put into
Ester resin, 4g dimethyl silicone polymers, copolymer, the 60g bis- of low molecular weight unsaturation polycarboxylic acid polymers and polysiloxanes
Toluene, after high speed dispersion is uniform, adds 30g phthalocyanine blues, 80g titanium dioxides, 1g organic yellows, 90g blanc fixes grinding distribution extremely
20 μm of fineness, adds 5g dodecyl benzene sulfonic acid, 90g amino resins, the polyether-modified dimethyl silicone polymers of 3g or polyester modification
Dimethyl silicone polymer, 3g2- hydroxyl -4- oxy-octyl benzophenones, the isocyanate-modified acrylate of 3g or polyether polyester change
Property organosilicon stir evenly, adjust viscosity with the dimethylbenzene of remaining 40g.
It is a kind of performance test table of organosilicon modified polyester coiled material finishing paint of gained below：
| Solidification temperature/time | 216℃/30s |
| It is MEK/ times resistance to | 130 |
| Adhesive force/level | 0 |
| Reverse impact | 10J |
| Hardness | 4H |
| Cupping test/mm | 8.06 |
| Mar-resistance/g | 1400 |
| T is curved | 2T |
| Water resistance (boiling water 30min) | Without significant change |
| Salt fog resistance (720h) | Grade 2 of blistering (S2) |
| Artificial ageing resistance (1500h) | 1 grade of discoloration, 1 grade of loss of gloss, 0 grade of dusting |
Embodiment 2：
A kind of organosilicon modified polyester coiled material finishing paint of the present embodiment description, it is changed by the organosilicon containing weight ratio 500g
Property polyester resin, 120g amino resins, 50g titanium dioxides, 6g carbon blacks, 1g organic yellows, 90g blanc fixes, 4g poly dimethyl silicon
Oxygen alkane, the copolymer of low molecular weight unsaturation polycarboxylic acid polymers and polysiloxanes, 3g2- hydroxyl -4- n-octyloxy hexichol first
Ketone, 5g dinonylnaphthalene sulfonic acids, the polyether-modified dimethyl silicone polymers of 3g or polyester modification dimethyl silicone polymer, 3g isocyanates
Modification acrylate or polyether polyester modified organic silicon and 100g aromatic hydrocarbons are formed；Wherein, silicone modified polyester resin is by between 10g
Phthalic acid, 8g adipic acids, 6g1,4- cyclohexane cyclohexanedimethanodibasics, 8g neopentyl glycols, 7g ethyl butyl propanediols, 7g2,2,4- front threes
Base -1,3- pentanediol, 0.08g tin catalysts, 20g silicone intermediates, 2.5g reflux dimethylbenzene, 2.5g trimellitic anhydrides, 25g
No. 100 aromatic solvents and 6g butanol composition.
A kind of preparation method of organosilicon modified polyester coiled material finishing paint is：
The first step, the preparation of silicone modified polyester resin：With the preparation side of silicone modified polyester resin in embodiment 1
Method is consistent.
Second step, the preparation of organosilicon modified polyester coiled material finishing paint：In Scattered Kettle, the organic-silicon-modified poly- of 500g is put into
Ester resin, 4g dimethyl silicone polymers, the copolymer of low molecular weight unsaturation polycarboxylic acid polymers and polysiloxanes, 60g virtues
Hydrocarbon, after high speed dispersion is uniform, adds 50g titanium dioxides, 6g carbon blacks, 1g organic yellows, 90g blanc fixes grinding distribution to fineness 20
μm, add 5g dinonylnaphthalene sulfonic acids, 120g amino resins, the polyether-modified dimethyl silicone polymers of 3g or polyester modification poly dimethyl
Siloxanes, 3g2- hydroxyl -4- oxy-octyl benzophenones, the isocyanate-modified acrylate of 3g or polyether polyester modified organic silicon
Stir evenly, viscosity is adjusted with remaining 40g aromatic hydrocarbons.
It is a kind of performance test table of organosilicon modified polyester coiled material finishing paint of gained below：
| Solidification temperature/time | 216℃/30s |
| It is MEK/ times resistance to | 140 |
| Adhesive force/level | 0 |
| Reverse impact | 10J |
| Hardness | 4H |
| Cupping test/mm | 7.58 |
| Mar-resistance/g | 1500 |
| T is curved | 3T |
| Water resistance (boiling water 30min) | Without significant change |
| Salt fog resistance (720h) | Grade 2 of blistering (S2) |
| Artificial ageing resistance (1500h) | 1 grade of discoloration, 1 grade of loss of gloss, 0 grade of dusting |
Embodiment 3：
A kind of organosilicon modified polyester coiled material finishing paint of the present embodiment description, it is changed by the organosilicon containing weight ratio 500g
Property polyester resin, 80g amino resins, 130g organic yellows, 50g titanium dioxides, 120g blanc fixes, 4g dimethyl silicone polymers,
The copolymer of low molecular weight unsaturation polycarboxylic acid polymers and polysiloxanes, 3g2- hydroxyl -4- oxy-octyl benzophenones, 5g
The polyether-modified dimethyl silicone polymer of enclosed type acid catalyst, 3g or polyester modification dimethyl silicone polymer, 3g isocyanates change
Property acrylate or polyether polyester modified organic silicon and 100g dimethylbenzene form；Wherein, silicone modified polyester resin is by between 10g
Phthalic acid, 8g adipic acids, 6g1,4- cyclohexane cyclohexanedimethanodibasics, 8g neopentyl glycols, 7g ethyl butyl propanediols, 7g2,2,4- front threes
Base -1,3- pentanediol, 0.08g tin catalysts, 20g silicone intermediates, 2.5g reflux dimethylbenzene, 2.5g trimellitic anhydrides, 25g
No. 100 aromatic solvents and 6g butanol composition.
A kind of preparation method of organosilicon modified polyester coiled material finishing paint is：
The first step, the preparation of silicone modified polyester resin：With the preparation side of silicone modified polyester resin in embodiment 1
Method is consistent.
Second step, the preparation of organosilicon modified polyester coiled material finishing paint：In Scattered Kettle, the organic-silicon-modified poly- of 500g is put into
Ester resin, 5g dimethyl silicone polymers, copolymer, the 60g bis- of low molecular weight unsaturation polycarboxylic acid polymers and polysiloxanes
Toluene, after high speed dispersion is uniform, adds 30g organic yellows, 50g titanium dioxides, 120g blanc fixes grinding distribution to 20 μm of fineness,
Addition 4g acid catalysts, 80g amino resins, the polyether-modified dimethyl silicone polymers of 3g or polyester modification dimethyl silicone polymer,
3g2- hydroxyl -4- oxy-octyl benzophenones, the isocyanate-modified acrylate of 3g or the stirring of polyether polyester modified organic silicon are equal
It is even, adjust viscosity with remaining 40g dimethylbenzene.
It is a kind of performance test table of organosilicon modified polyester coiled material finishing paint of gained below：
| Solidification temperature/time | 216℃/30s |
| It is MEK/ times resistance to | 120 |
| Adhesive force/level | 0 |
| Reverse impact | 10J |
| Hardness | 3H |
| Cupping test/mm | 8.23 |
| Mar-resistance/g | 1300 |
| T is curved | 2T |
| Water resistance (boiling water 30min) | Without significant change |
| Salt fog resistance (720h) | Grade 3 of blistering (S2) |
| Artificial ageing resistance (1500h) | 1 grade of discoloration, 1 grade of loss of gloss, 0 grade of dusting |
Embodiment 4：
A kind of organosilicon modified polyester coiled material finishing paint of the present embodiment description, it is changed by the organosilicon containing weight ratio 500g
It is property polyester resin, 90g amino resins, 30g phthalocyanine blues, 50g titanium dioxides, 100g blanc fixes, 4g dimethyl silicone polymers, low
The copolymer of molecular weight unsaturation polycarboxylic acid polymers and polysiloxanes, 5g2- hydroxyl -4- oxy-octyl benzophenones, 7g envelopes
The polyether-modified dimethyl silicone polymer of closed form acid catalyst, 3g or polyester modification dimethyl silicone polymer, 3g are isocyanate-modified
Acrylate or polyether polyester modified organic silicon and 100g butyl ether are formed；Wherein, silicone modified polyester resin is by 10g isophthalic two
Formic acid, 8g adipic acids, 6g1,4- cyclohexane cyclohexanedimethanodibasics, 8g neopentyl glycols, 7g ethyl butyl propanediols, 7g2,2,4- trimethyls-
1,3- pentanediol, 0.08g tin catalysts, 20g silicone intermediates, 2.5g reflux dimethylbenzene, 2.5g trimellitic anhydrides, 25g
No. 100 aromatic solvents and 6g butanol composition.
A kind of preparation method of organosilicon modified polyester coiled material finishing paint is：
The first step, the preparation of silicone modified polyester resin：With the preparation side of silicone modified polyester resin in embodiment 1
Method is consistent.
Second step, the preparation of organosilicon modified polyester coiled material finishing paint：In Scattered Kettle, having in input 500g embodiments 1
Machine silicon-modified polyester resin, 4g dimethyl silicone polymers, low molecular weight unsaturation polycarboxylic acid polymers and polysiloxanes are total to
Aggressiveness, 60g butyl ether, after high speed dispersion is uniform, add 30g phthalocyanine blues, 50g titanium dioxides, 100g blanc fixes grinding distribution extremely
20 μm of fineness, adds 7g acid catalysts, 90g amino resins, the polyether-modified dimethyl silicone polymers of 3g or the poly- diformazan of polyester modification
Radical siloxane, 5g2- hydroxyl -4- oxy-octyl benzophenones, the isocyanate-modified acrylate of 3g or polyether polyester are modified organic
Silicon stirs evenly, and viscosity is adjusted with remaining 40g butyl ether.
It is a kind of performance test table of organosilicon modified polyester coiled material finishing paint of gained below：
| Solidification temperature/time | 216℃/30s |
| It is MEK/ times resistance to | 150 |
| Adhesive force/level | 0 |
| Reverse impact | 10J |
| Hardness | 4H |
| Cupping test/mm | 7.95 |
| Mar-resistance/g | 1500 |
| T is curved | 3T |
| Water resistance (boiling water 30min) | Without significant change |
| Salt fog resistance (720h) | Grade 2 of blistering (S2) |
| Artificial ageing resistance (1500h) | 1 grade of discoloration, 1 grade of loss of gloss, 0 grade of dusting |
Claims (2)
- A kind of 1. organosilicon modified polyester coiled material finishing paint, it is characterised in that：Its silicone modified polyester resin, 90g by 500g Amino resins, 30g phthalocyanine blues, 50g titanium dioxides, 100g blanc fixes, 4g dimethyl silicone polymers, 5g2- hydroxyls -4- are just pungent Epoxide benzophenone, 7g enclosed types acid catalyst, the polyether-modified dimethyl silicone polymers of 3g or polyester modification polydimethylsiloxanes The isocyanate-modified acrylate of alkane, 3g or polyether polyester modified organic silicon and 100g butyl ether are formed；Wherein, it is organic-silicon-modified poly- Ester resin is by 10g M-phthalic acids, 8g adipic acids, 6g1,4- cyclohexane cyclohexanedimethanodibasics, 8g neopentyl glycols, 7g ethyl-butyls the third two Alcohol, 7g2,2,4- trimethyl -1,3- pentanediols, 0.08g tin catalysts, 20g silicone intermediates, 2.5g reflux dimethylbenzene, 2.5g trimellitic anhydrides, No. 100 aromatic solvents of 25g and 6g butanol composition.
- A kind of 2. preparation method of organosilicon modified polyester coiled material finishing paint, it is characterised in that：The first step, the preparation of silicone modified polyester resin：In the reactor that one is equipped with blender, condenser, heater, Add 10g M-phthalic acids, 8g adipic acids, 6g1,4- cyclohexane cyclohexanedimethanodibasics, 8g neopentyl glycols, 7g ethyl butyl propanediols, 7g2,2,4- trimethyl -1,3- pentanediols, 0.08g tin catalysts, after adding, are warming up to 160 DEG C, when insulation 3 is small, then heat up To 180 DEG C, when insulation 1 is small, 200 DEG C are then warming up to again, when insulation 1 is small, it is transparent to material to be finally warming up to 220 DEG C of insulations, 20g silicone intermediates are added, 2.5g reflux dimethylbenzene, when 220 DEG C of insulation esterifications 2 are small, survey acid number and be less than 3mgKOH/ During g, 200 DEG C of addition 2.5g trimellitic anhydrides are cooled to, then at 220 DEG C of insulation esterifications, are less than 15mgKOH/g to acid number is surveyed When, 200 DEG C are cooled to, adds No. 100 aromatic solvents of 25g, 6g butanol carries out latting drown, the silicone modified polyester resin of gained Solid content is 60.8%, viscosity 113KU, acid number 7.3mgKOH/g；Second step, the preparation of organosilicon modified polyester coiled material finishing paint：In Scattered Kettle, 500g organosilicon modified polyester trees are put into Fat, 4g dimethyl silicone polymers, 60g butyl ether, after high speed dispersion is uniform, add 30g phthalocyanine blues, 50g titanium dioxides, 100g precipitated sulfurs Sour barium grinding distribution to 20 μm of fineness, add 7g acid catalysts, 90g amino resins, the polyether-modified dimethyl silicone polymers of 3g or Polyester modification dimethyl silicone polymer, 5g2- hydroxyl -4- oxy-octyl benzophenones, the isocyanate-modified acrylate of 3g or poly- Ether polyester resin change properties of organic silicon stirs evenly, and viscosity is adjusted with remaining 40g butyl ether.
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