CN110144152A - Dirt-resistant varnish composition and application thereof - Google Patents
Dirt-resistant varnish composition and application thereof Download PDFInfo
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- CN110144152A CN110144152A CN201910415057.0A CN201910415057A CN110144152A CN 110144152 A CN110144152 A CN 110144152A CN 201910415057 A CN201910415057 A CN 201910415057A CN 110144152 A CN110144152 A CN 110144152A
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- component
- acrylic resin
- solvent
- stain resistance
- clear coat
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Classifications
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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
-
- 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
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
- C09D5/1668—Vinyl-type polymers
-
- 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
Abstract
The invention provides a stain-resistant varnish composition and application thereof, and paint prepared by using the varnish composition has excellent stain-resistant performance when being coated on plastic parts such as bumpers to form paint films. The invention provides a stain-resistant varnish composition which comprises a component I and a component II, wherein the component I comprises acrylic resin, a solvent and an auxiliary agent, the component II comprises a curing agent, the acrylic resin is a combination of hydroxy acrylic resin A and hydroxy acrylic resin B, the glass transition temperature of the hydroxy acrylic resin A is 10-30 ℃, the glass transition temperature of the hydroxy acrylic resin B is 40-60 ℃, and the sum of the mass percentages of the hydroxy acrylic resin A and the hydroxy acrylic resin B in the component I is 40-50%.
Description
Technical field
The present invention relates to paint fields, in particular to stain resistance varnish, are especially adapted for use in the varnish of coating plastic parts, example
Such as bumper varnish.
Background technique
Existing bumper varnish, mainly organize as acrylic resin, auxiliary agent (such as catalyst, UV absorbers,
Defoaming agent etc.) and solvent, paint vehicle is formed and mixing cured with curing agent.Traditional varnish finds to bear dirty in use
Dirty performance is poor, and dust etc. easily adheres to surface of the paint film, causes bumper discoloration serious.And due to vehicle body and bumper discoloration speed
Rate is inconsistent, and so, the poor varnish of anti-pollution energy, which will likely result in, forms color difference between vehicle body and bumper, influences
Beautiful and user experience.
Summary of the invention
Based on this, the present invention provides a kind of stain resistance clear coat composition, using paint vehicle made from the composition in plastic part
The paint film that formation is coated on upper especially bumper, has excellent anti-pollution energy.
The present invention be reach its purpose, the technical solution adopted is as follows:
The present invention provides a kind of stain resistance clear coat composition, including component I and component II, and wherein component I includes acrylic acid
Resin, solvent and auxiliary agent, the component II includes curing agent, and the acrylic resin is Hydroxylated acrylic resin A and hydroxyl third
The combination of olefin(e) acid resin B, Hydroxylated acrylic resin A and Hydroxylated acrylic resin B, which are two kinds, has different glass state conversion temperature
Hydroxylated acrylic resin, wherein the glass transition temperature of the Hydroxylated acrylic resin A be 10-30 DEG C (such as 10,15,
20,25,30 DEG C etc.), the glass transition temperature of the Hydroxylated acrylic resin B is 40-60 DEG C (such as 40,45,50,55,60
DEG C etc.), and mass percent the sum of of the Hydroxylated acrylic resin A and Hydroxylated acrylic resin B in the component I is
40-50% (such as 40%, 42%, 45%, 47%, 50% etc.).In Hydroxylated acrylic resin A and Hydroxylated acrylic resin B
" A ", " B " have no special meaning, are merely for convenience of distinguishing the resin of two kinds of different glass state conversion temperatures of description.
The present invention improves on the basis of existing bumper varnish, using glass transition temperature be 10-30 DEG C and
The Hydroxylated acrylic resin of 40-60 DEG C of two kinds of different glass state conversion temperatures is combined, and present inventor has found in this way
Combine resulting composition in use, the hardness of paint film of formation gets a promotion, and the fouls such as dust are not easy to be adhered to paint film
Surface can significantly improve anti-pollution energy.
In some preferred embodiments, the hydroxyl value of the Hydroxylated acrylic resin A and Hydroxylated acrylic resin B are respectively
80-160mgKOH/g.Hydroxylated acrylic resin A can make by oneself to obtain, or use commercial product, such as, but not limited to
Elementis Hypomer FS-4770；Hydroxylated acrylic resin B can use self-made resin, or use commercial product, such as
But it is not limited to Elementis Hypomer FS-4660.
In composition of the invention, the mass ratio of the Hydroxylated acrylic resin A and Hydroxylated acrylic resin B are preferably 8:
2-2:8 (such as 8:2,6:4,5:5,4:6,2:8 etc.).Present inventor's discovery, controls when by the two ratio as 6:4-2:8,
When more preferable 5:5-2:8, it can more significantly improve paint film anti-pollution energy, and comprehensive performance is more preferably, such as can simultaneously well
Take into account resistance to bend(ing) energy, adhesive force and hardness etc..
In some preferred embodiments, the component I includes each component of following mass percent: acrylic resin 40-
50%, auxiliary agent 1.8-4.6%, balance of solvent.
In composition of the invention, there is no particular restriction for the specific type of the auxiliary agent, can be used commonly used in this field
Assistant types, the auxiliary agent includes catalyst, can also include UV absorbers, light stabilizer, surface leveling agents, defoaming
The combination of one or more of agent, microgel etc.；UV absorbers, light stabilizer, surface leveling agents, defoaming agent etc.
The specific reagent selection of auxiliary agent is not particularly limited, and can use corresponding marketable material commonly used in the art, surface leveling agents are for example
But it is not limited to polyether-modified dimethyl silicone polymer (specific such as BYK306 or BYK320), defoaming agent is such as, but not limited to broken
It steeps polymer (such as BYK052 or BYK066N etc.), ultraviolet absorbing agent is such as, but not limited to hydroxy-phenyl-benzotriazole
Liquid ultraviolet absorber (such as Tinuvin 1130/Eversorb 80 etc.), light stabilizer is such as, but not limited to hindered amine
Light stabilizer (such as Tinuvin 292/Eversorb 93) etc..
In some preferred embodiments of the present invention, the component I includes each component of following mass percent: acrylic acid tree
Rouge 40-50%, catalyst 0.1-0.3%, UV absorbers 1.0-2.0%, light stabilizer 0.2-0.8%, surface leveling agents
0.4-1.0%, defoaming agent 0.1-0.5%, balance of solvent.Preferably, the catalyst is dibutyltin dilaurate catalyst.
In some preferred embodiments, the solvent include one of aromatic solvent, esters solvent and ketones solvent or
Two or more combinations；It is preferred that the solvent is the combination of aromatic solvent, esters solvent and ketones solvent；It is further preferred that
Mass ratio of the aromatic solvent in the component I is 35-45%, and mass ratio of the esters solvent in the components I is 2.5-
4%, mass ratio of the ketones solvent in the component I is 7.5-12%.Aromatic solvent, esters solvent and ketones solvent it is specific
Selection is not particularly limited, this field allow using coordinative solvent can be used；Preferably, the aromatic solvent can be
Dimethylbenzene, the esters solvent can be butyl acetate or 2-Butoxyethyl acetate etc., and the ketones solvent can be butanone
Or methyl iso-butyl ketone (MIBK) etc..
In composition of the invention, there is no particular restriction for the catalyst used, this field allow using it is corresponding
Catalyst can be used.The present invention preferably selects dibutyltin dilaurate catalyst.
In composition of the invention, the mass ratio of the component I and component II can be according to this field two-component varnish institutes
Common proportion is combined, preferably 100:18-100:22.
In composition of the invention, the curing agent in the component II is not particularly limited, and can be in two-component varnish
Commonly used by curing agent, preferably HDI (hexamethylene diisocyanate) curing agent.
The present invention also provides a kind of using stain resistance paint film made from composition described above, for example, by will be described
Composition in component I and component II mix and be diluted and the stain resistance varnish paint vehicle is made, in use, by the paint
Material is sprayed on substrate, is formed a film after being toasted.The specific process for preparation of component I simultaneously has no special requirements, according to this field routine
Manner of formulation is prepared, such as to addition acrylic resin and other each component mixed preparings in container；One
In a little specific embodiments, such as acrylic resin is added, stirring, successively plus UV absorbers, catalyst, light stabilizer,
The auxiliary agents such as surface leveling agents, defoaming agent add solvent (such as aromatic solvent, esters solvent and ketones solvent).
The present invention also provides a kind of application, stain resistance clear coat composition described above is used for the coating of plastic part, more excellent
It is selected to car paint field, is still more preferably used as bumper varnish.
Technical solution provided by the invention at least has the following beneficial effects:
Clear coat composition ingredient of the invention is simple, by being 10-30 DEG C and 40-60 DEG C by Tg (glass transition temperature)
The Hydroxylated acrylic resin of two kinds of difference Tg be combined collocation, the two coordinated, the anti-pollution energy of the paint film of formation
Be improved significantly, the coating especially suitable for plastic member such as bumper.
Specific embodiment
For a better understanding of the technical solution of the present invention, below with reference to the embodiment content that the present invention is further explained,
But the contents of the present invention are not limited only to following embodiment.
Embodiment 1- embodiment 7
The clear coat composition formula table of embodiment 1 to embodiment 7 is shown in Table 1.
Each raw material of embodiment 1-7 is described as follows:
Hydroxylated acrylic resin A: Elementis Hypomer FS-4770,26 DEG C of hydroxyl value 102mgKOH/g, Tg are selected；
Self-made resin can also be used；
Hydroxylated acrylic resin B: Elementis Hypomer FS-4660,58 DEG C of hydroxyl value 91mgKOH/g, Tg are selected；
Self-made resin can also be used；
Catalyst: dibutyl tin dilaurate；
Surface leveling agents: polyether-modified dimethyl silicone polymer (BYK306)；
Defoaming agent: brokenly bubble polymer (BYK052)；
UV absorbers: the liquid ultraviolet absorber (Tinuvin1130) of hydroxy-phenyl-benzotriazole；
Light stabilizer: hindered amine light stabilizer Tinuvin 292；
Aromatic solvent: dimethylbenzene；
Esters solvent: butyl acetate；
Ketones solvent: butanone.
The preparation of varnish paint vehicle: in material-compound tank be added clear coat composition in acrylic resin raw material, stirring, successively plus
Enter UV absorbers, catalyst, light stabilizer, surface leveling agents, defoaming agent, adds dimethylbenzene, butyl acetate, butanone,
Mixing adds proper amount of acetic acid butyl ester adjustment viscosity (range of viscosities 50-60KU stormer) later.
Construction method: varnish paint vehicle: curing agent: diluent=100:20:30 (weight ratio) mixing after (wherein diluent at
It is divided into: dimethylbenzene, solvent naphtha (boiling point 160-180), butyl acetate,
The mixed solvent of weight ratio 40:40:20), obtain paint vehicle to be sprayed；Pass through robot or hand spray later；At
Film condition is, for example, to form a film after twenty minutes in 80 DEG C of heat preservations.
Curing agent used is HDI (hexamethylene diisocyanate) curing agent in each embodiment shown in table 1.
It tests (test result is shown in Table 1):
1, anti-pollution
Experimental facilities:
Color difference meter: now color difference meter in the market, in embodiment it is used be X-rite company MA96；
Experimental implementation:
1) paint vehicle to be sprayed obtained is sprayed on PP plastics test plate (panel) (70*150mm),
Then baking film forming is carried out within temperature 20 minutes at 80 DEG C；
2) test plate (panel) is cleaned with clear water, and with outing cloth wiped clean.
3) the initial L of test plate (panel), a, b value are tested with color difference meter.
4) dirt is sprayed on test plate (panel), and is toasted 10 minutes at 50 DEG C.8 times repeatedly.
5) test plate (panel) is cleaned.
6) the final L of test plate (panel), a, b value are tested with color difference meter.
7) Δ L and Δ E value before and after experiment with computing.
2, appearance
Experimental facilities:
Tangerine peel instrument: now tangerine peel instrument, embodiment use BYK AW-4846 tangerine peel instrument in the market；
Experimental implementation:
1) paint vehicle to be sprayed obtained is sprayed on PP plastics test plate (panel) (70*150mm), then in 80 DEG C of temperatures 20
Minute carries out baking film forming；
2) test plate (panel) appearance is tested with tangerine peel instrument.
3) test plate (panel) appearance data Lw, Sw, DOI value are recorded.
3, resistance to bend(ing)
Experimental facilities: rotating shaft (diameter 25mm)
Experimental implementation:
1) paint vehicle to be sprayed obtained is sprayed on PP plastics test plate (panel) (70*150mm), then in 80 DEG C of temperatures 20
Minute carries out baking film forming；
2) test plate (panel) is placed on rotating shaft central location, then in 1-2s with stable speed by test plate (panel) around bending shaft 180
Degree；
3) cracking for checking paint film, peels off degree.
4, adhesive force
Experimental facilities:
Paper knife: now paper knife in the market.
Adhesive tape: transparent pressure-sensitive tape
Experimental implementation:
1) paint vehicle to be sprayed obtained is sprayed on PP plastics test plate (panel) (70*150mm), then in 80 DEG C of temperatures 20
Minute carries out baking film forming；
2) cutting tool is held, knife is made uniformly to exert oneself perpendicular to specimen surface to cutting tool, and is led using the spacing of 2mm
To device, defined cutting number is formed on coating with uniform rate of cutting.All cuttings should all be drawn to surface of bottom material.
3) aforesaid operations are repeated, the parallel cut of identical quantity is remake, and original cutting line intersection in 90 °, to be formed
Grid pattern.
4) adhesive tape center is placed on above grid, direction is parallel with one group of cutting line, then uses finger adhesive tape in net
Position above lattice flattens, and is sticking adhesive tape 5 minutes in, holds the hanging one end of adhesive tape, and in the angle close to 60 °,
Adhesive tape is smoothly torn off in 0.5-1s.
5) paint film spalling situation is checked.
Table 1
From the above experimental result as it can be seen that the embodiment 2-6 using the present invention program is compared with comparative example 1, all have smaller
△ E value, smaller its anti-pollution that represents of △ E value can be better, it is seen that is combined using the Hydroxylated acrylic resin of two kinds of difference Tg
It uses, can effectively improve paint film anti-pollution energy；Embodiment 2-6 is compared with comparative example 2, is keeping the same of preferable anti-pollution energy
When, moreover it is possible to the mechanical properties such as excellent resistance to bend(ing) and adhesive force are taken into account, are not cracked in resistance to bend(ing) test.Thus,
Using the solution of the present invention, it is applied in combination by the Hydroxylated acrylic resin of two kinds of difference Tg, can effectively improve paint film stain resistance
Performance, while the mechanical properties such as excellent resistance to bend(ing), adhesive force can also be obtained.Embodiment 2-6 is compared with comparative example 1-2,
Difference is smaller in terms of appearance.In each embodiment of the present invention, embodiment 4-6 compares other embodiments, and △ E value is lower, has
Superior anti-pollution energy, while excellent resistance to bend(ing) and adhesive force can be also taken into account, comprehensive performance is more preferably；It can be seen that by hydroxyl
The control of the mass ratio of acrylic resin A and Hydroxylated acrylic resin B has better effect in 5:5-2:8.The △ E of the embodiment of the present invention 6
Value is minimum, and paint film anti-pollution can be best.
It will be understood by those skilled in the art that under the introduction of this specification, the present invention can be made some modifications or
Adjustment.These modifications or adjustment should also be as within the scope of the claims in the present invention.
Claims (9)
1. a kind of stain resistance clear coat composition, including component I and component II, wherein component I includes acrylic resin, solvent and helps
Agent, the component II includes curing agent, which is characterized in that the acrylic resin is Hydroxylated acrylic resin A and hydroxy
The combination of acid resin B, wherein the glass transition temperature of the Hydroxylated acrylic resin A is 10-30 DEG C, the hydroxy
The glass transition temperature of acid resin B is 40-60 DEG C, and the Hydroxylated acrylic resin A and Hydroxylated acrylic resin B are described
The sum of mass percent in component I is 40-50%.
2. stain resistance clear coat composition according to claim 1, which is characterized in that the Hydroxylated acrylic resin A and hydroxyl
The hydroxyl value of base acrylic resin B is respectively 80-160mgKOH/g.
3. stain resistance clear coat composition according to claim 1 or 2, which is characterized in that the Hydroxylated acrylic resin A and
The mass ratio of Hydroxylated acrylic resin B is 8:2-2:8, preferably 6:4-2:8, more preferable 5:5-2:8.
4. stain resistance clear coat composition according to claim 1-3, which is characterized in that the component I includes such as
The each component of lower mass percent:
Acrylic resin 40-50%, auxiliary agent 1.8-4.6%, balance of solvent.
5. stain resistance clear coat composition according to claim 1-4, which is characterized in that the auxiliary agent includes catalysis
Agent further preferably includes the combination of one or more of UV absorbers, light stabilizer, surface leveling agents, defoaming agent；
Preferably, the component I includes each component of following mass percent:
Acrylic resin 40-50%, catalyst 0.1-0.3%, UV absorbers 1.0-2.0%, light stabilizer 0.2-
0.8%, surface leveling agents 0.4-1.0%, defoaming agent 0.1-0.5%, balance of solvent；
Preferably, the catalyst is dibutyltin dilaurate catalyst.
6. stain resistance clear coat composition according to claim 1-5, which is characterized in that the solvent includes aromatic hydrocarbons
The combination of one or more of solvent, esters solvent and ketones solvent；It is preferred that the solvent is aromatic solvent, esters are molten
The combination of agent and ketones solvent；It is further preferred that mass ratio of the aromatic solvent in the component I is 35-45%, esters are molten
Mass ratio of the agent in the components I is 2.5-4%, and mass ratio of the ketones solvent in the component I is 7.5-12%.
7. stain resistance clear coat composition according to claim 1-6, which is characterized in that the component I and component
The mass ratio of II is 100:18-100:22；
It is preferred that the curing agent in the component II is HDI curing agent.
8. a kind of paint film, which is characterized in that be made using the described in any item stain resistance clear coat compositions of claim 1-7；
Preferably, by by the stain resistance clear coat composition component I and component II mix and be diluted to obtain paint vehicle,
It is sprayed on substrate, forms a film after toasted later；The substrate is plastic part, preferably bumper.
9. a kind of application, which is characterized in that the described in any item stain resistance clear coat compositions of claim 1-7 are for plastic part
Coating is more preferably used for car paint field, is still more preferably used as bumper varnish.
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| CN201910415057.0A CN110144152B (en) | 2019-05-17 | 2019-05-17 | Dirt-resistant varnish composition and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910415057.0A CN110144152B (en) | 2019-05-17 | 2019-05-17 | Dirt-resistant varnish composition and application thereof |
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| CN110144152A true CN110144152A (en) | 2019-08-20 |
| CN110144152B CN110144152B (en) | 2021-08-17 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103130944A (en) * | 2013-02-21 | 2013-06-05 | 西安交通大学 | Preparation method of high-reaction-activity hydroxyl acrylic resin |
| CN103497604A (en) * | 2013-09-27 | 2014-01-08 | 东来涂料技术（上海）有限公司 | High-fullness automobile exterior trimming varnish and preparation method thereof |
| CN103497606A (en) * | 2013-10-14 | 2014-01-08 | 湖南湘江关西涂料有限公司 | Mark eliminating agent for repairing automobile body and bumper and preparation method of mark eliminating agent |
| CN104178006A (en) * | 2013-05-24 | 2014-12-03 | 南雄市嘉盛实业有限公司 | Ultrafast dry thermosetting acrylic resin varnish for automobiles |
-
2019
- 2019-05-17 CN CN201910415057.0A patent/CN110144152B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103130944A (en) * | 2013-02-21 | 2013-06-05 | 西安交通大学 | Preparation method of high-reaction-activity hydroxyl acrylic resin |
| CN104178006A (en) * | 2013-05-24 | 2014-12-03 | 南雄市嘉盛实业有限公司 | Ultrafast dry thermosetting acrylic resin varnish for automobiles |
| CN103497604A (en) * | 2013-09-27 | 2014-01-08 | 东来涂料技术（上海）有限公司 | High-fullness automobile exterior trimming varnish and preparation method thereof |
| CN103497606A (en) * | 2013-10-14 | 2014-01-08 | 湖南湘江关西涂料有限公司 | Mark eliminating agent for repairing automobile body and bumper and preparation method of mark eliminating agent |
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