CN103788838A - Coating composition and preparation method thereof - Google Patents
Coating composition and preparation method thereof Download PDFInfo
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- CN103788838A CN103788838A CN201310101946.2A CN201310101946A CN103788838A CN 103788838 A CN103788838 A CN 103788838A CN 201310101946 A CN201310101946 A CN 201310101946A CN 103788838 A CN103788838 A CN 103788838A
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Abstract
The invention relates to a solvent-type colored paint coating composition with low xylene content, and a preparation method of the composition. The composition comprises resin components (1) and a solvent system, wherein the resin components (1) comprise polyester resin, amino resin and butyl cellulose derivatives, the solvent system comprises n-butyl acetate and one or more selected from the following components: trimethylbenzene, tetramethylbenzene, n-butyl alcohol, methyl isobutyl ketone, Ethylene glycol monobutyl ether acetate, butyl cellosolve and propylene glycol monomethyl ether, the content of the xylene is lower than the weight of the coating composition by 5wt%. The coating composition can contain a pigment or one or more additive components. The coating composition has various coating performances equivalent to those of the prior art, but has xylene content far lower than that of the existing coating composition.
Description
Technical field
The present invention relates to novel dissolvent type coating composition of a kind of low xylene content and preparation method thereof.This coating composition is to be mainly applied to original factory of vehicle colored paint, automotive trim, safety lever etc.
Background technology
In world wide, automotive coating has been realized 5 large updates in last 100 years: oil-base paint, pyroxylin(e)finish (automotive lacquer), synthetic resin coating, electrophoretic paint and high-quality synthetic resins (epoxy, alkyd amino, vinylformic acid, polyester, urethane etc.) coating, environment-friendly type (i.e. low VOC) coating (the beautiful Na of censuring as leading take alkyd and phenolic aldehyde, Shu Wu Ping, Li Yunyun, the current situation of car paint and direction [J]. modern coatings and development, 2007,10(6): 32-35).Meanwhile, GB/T27630-2011 " Air Quality Evaluation guide in passenger car " has stipulated the concentration requirement of benzene in air, toluene, ethylbenzene, dimethylbenzene, vinylbenzene, formaldehyde, acetaldehyde, propenal in car.Therefore,, according to the development trend of environmental protection car paint, the solvent-borne type automobile color paint coating of studying a kind of low VOC content and having an excellent properties seems very important.
Although dimethylbenzene is a kind of fine solvent for car paint, its strong toxicity is large to harm, is also one of important factor causing photo-chemical smog and topsoil simultaneously.Therefore, use the more type of solvent of environmental protection low toxicity to replace dimethylbenzene to become a problem of people's growing interest.
At present Industrial products are in this problem of solve/exploitation " automobile of low xylene content high bake Amino-Polyester colored paint ", and usual method has: simply replace dimethylbenzene with N-BUTYL ACETATE, but can cause cost to rise, produce the performance differences such as solvency power; With the alternative dimethylbenzene such as Three methyl Benzene, tetramethyl-benzene, can cause again solvency power to decline, rate of volatilization changes; If remove the starting material that contain dimethylbenzene, product performance can reduce; Or provide for simple replacement of the xylene solvent in starting material, can cause starting material unstable, effect reduces.Therefore, provide a kind of toxicity low, xylene content is very low, and becomes a kind of necessary without the solvent-borne type car paint composition and method of making the same of impact on product performance.
The present invention aims to provide a kind of novel dissolvent type automobile color paint coating composition of low xylene content, and it meets national VOC(volatile organic compounds) hazardous solvent emission request.Too high for xylene content in existing coating composition, make merely the content of dimethylbenzene material in composition reduce or eliminate for reducing dimethylbenzene, cause in production the constructional deficiencies such as the color that can produce, outward appearance, performance, the present invention has developed novel composition, and the dimethylbenzene that said composition contains utmost point low levels can meet the performance of required every coating composition, color is without considerable change, outward appearance is in same level, and performance can meet client's requirement, on execution conditions without impact etc.
Summary of the invention
On the one hand, the invention provides a kind of coating composition, it comprises: (1) resin Composition: it comprises vibrin, aminoresin, butyl cellulose derivative; (2) solvent system, described solvent system comprises one or more of in N-BUTYL ACETATE and following substances: Three methyl Benzene, tetramethyl-benzene, propyl carbinol, methyl iso-butyl ketone (MIBK), 2-Butoxyethyl acetate, Diethylene Glycol butyl ether and 1-Methoxy-2-propyl acetate.In described coating composition, the content of dimethylbenzene is lower than about 5wt% of this coating composition weight.In described coating composition, the content of dimethylbenzene is preferably lower than the 2wt% of this coating composition weight, more preferably less than the 0.5wt% of this coating composition weight.
On the other hand, the invention provides a kind of coating composition, it comprises: (1) resin Composition: it comprises vibrin, aminoresin, butyl cellulose derivative; (2) solvent system, described solvent system comprises one or more of in N-BUTYL ACETATE and following substances: Three methyl Benzene, tetramethyl-benzene, propyl carbinol, methyl iso-butyl ketone (MIBK), 2-Butoxyethyl acetate, Diethylene Glycol butyl ether and 1-Methoxy-2-propyl acetate; (3) pigment; (4) binder component.In described coating composition, the content of dimethylbenzene is lower than the 5wt% of this coating composition weight.In described coating composition, the content of dimethylbenzene is preferably lower than the 2wt% of this coating composition weight, more preferably less than the 0.5wt% of this coating composition weight.
On the other hand, the present invention also provides a kind of method of the solvent-borne coating composition of preparing low xylene content.Described method comprises: (1) slowly joins butyl cellulose derivative in appropriate N-BUTYL ACETATE, and stirring and dissolving forms the first pre-composition; (2) binder component is slowly joined in appropriate N-BUTYL ACETATE and stirred, then add aminoresin, form the second pre-composition; (3) pigment is soaked fully and soaked with appropriate N-BUTYL ACETATE, mix and form pigment slurry the 3rd pre-composition; (4) vibrin, aminoresin, solvent and first, second and third pre-composition are evenly mixed, obtain coating composition of the present invention.
Detailed description of the Invention
The invention provides a kind of solvent-borne coating composition of low xylene content, it is particularly suitable for including but not limited to the application of original factory of vehicle colored paint, automotive trim, safety lever etc.Coating composition employing according to the present invention does not contain the solvent system of dimethylbenzene, not containing the wax slurry of dimethylbenzene, selects substantially not contain or contain other composition component of very a small amount of dimethylbenzene simultaneously.Therefore, in coating composition of the present invention, the source of dimethylbenzene only limits to some moiety of said composition entrained micro-dimethylbenzene such as resin Composition, thereby has removed existing a large amount of dimethylbenzene in the existing coating with same use.
In an embodiment, coating composition according to the present invention comprises: (1) approximately 10 resin Compositions to about 60wt%, and it comprises vibrin, aminoresin and butyl cellulose derivative; (2) approximately 20 solvent systems to about 65wt%, described solvent system comprises one or more of in N-BUTYL ACETATE and following substances: Three methyl Benzene, tetramethyl-benzene, propyl carbinol, methyl iso-butyl ketone (MIBK), 2-Butoxyethyl acetate, Diethylene Glycol butyl ether and 1-Methoxy-2-propyl acetate; (3) approximately 0.5 pigment to about 10wt%; (4) approximately 0.1 binder component to about 40wt%, the gross weight of the equal coating based composition of above-mentioned weight percent.In described coating composition, the content of dimethylbenzene is lower than the 5wt% of this coating composition weight.Preferably, in described coating composition, the content of dimethylbenzene is lower than the 2wt% of this coating composition weight, more preferably less than the 0.5wt% of this coating composition weight
Resin Composition
The resin Composition of coating composition of the present invention comprises vibrin, aminoresin and butyl cellulose derivative.
The vibrin component being suitable for use in coating composition of the present invention can be paint field any vibrin known to the skilled, preferably contains the saturated polyester resin of terminal hydroxy group functional group.Vibrin is by making at least one polyprotonic acid and the preparation of at least one polyol reaction.The example of suitable vibrin includes but not limited to: derive from PPG 771.417Polyester Resin, derive from Nuplex Setal173, derive from the FY114Polyester Resin of PPG etc.
Can comprise weighing scale approximately 5 vibrin to about 35wt% with this coating composition according to coating composition of the present invention.Preferably, the amount that vibrin exists in coating composition, based on the weighing scale of said composition, can be approximately 10 to about 30wt%, and more preferably from about 15 to about 30wt%.
The aminoresin being suitable for use in coating composition of the present invention can be paint field any aminoresin known to the skilled, preferably melamine formaldehyde resin.Aminoresin and vibrin generation crosslinking reaction and form paint film.The available example that can be used for aminoresin of the present invention of business includes but not limited to: from the FM003 of PPG; From the Luwipal018 of BASF; From cyanogen spy's Cymel303; And similar aminoresin.
Can comprise weighing scale approximately 3 aminoresin to about 15wt% with this coating composition according to coating composition of the present invention.Preferably, the amount that aminoresin exists in coating composition, based on the weighing scale of said composition, can be approximately 5 to about 15wt%, and more preferably from about 5 to about 10wt%.
The butyl cellulose derivative being suitable for use in coating composition of the present invention can be any butyl cellulose derivative well known by persons skilled in the art.Preferably, butyl cellulose derivative is cellulose acetate butyrate (CAB).CAB resin can improve the viscosity of Coating material composition objects system, and the resistance to aluminium powder pigment motion simultaneously can increase turbulent in wet film and convection current by solvent evaporates time, makes aluminium powder pigment have certain freedom of motion, is conducive to the oriented of aluminium powder.CAB resin is originally as thermoplasticity filmogen simultaneously, and molecular weight is larger, can form fine and close structure, makes CAB effectively play metal powder directive action.
The example of the available cellulose acetate butyrate of business for example includes but not limited to: CAB381 series, CAB551 series (Yi Shiman), preferred CAB is CAB381-20, CAB381-2, CAB551-0.01 etc.The example that can be used in the available cellulose acetate butyrate of business in coating composition of the present invention comprises: CAB381-2, CAB381-20, CAB531-1, CAB551-0.01, or its combination.
Can comprise the butyl cellulose derivative with the weighing scale 2 to about 10wt% of this coating composition according to coating composition of the present invention.Preferably, the amount that butyl cellulose derivative exists in coating composition, based on the weighing scale of said composition, can be approximately 4 to about 8wt%, and more preferably from about 4 to about 6wt%.Compared with prior art, the present invention has improved butyl cellulose derivative content, thereby is to a certain degree solving the supporting ability variation of removing containing causing after dimethylbenzene material, the aluminium powder orientation defect such as die down.
Solvent system
Solvent system in coating composition of the present invention is not containing dimethylbenzene.Described solvent system comprises N-BUTYL ACETATE and is selected from one or more the solvent in following substances: Three methyl Benzene, tetramethyl-benzene, propyl carbinol, methyl iso-butyl ketone (MIBK), 2-Butoxyethyl acetate, Diethylene Glycol butyl ether and 1-Methoxy-2-propyl acetate.A large amount of dimethylbenzene is different as the prior art of solvent from adopting, the present invention has removed the disagreeableness xylene solvent of environment, adopt N-BUTYL ACETATE one or more solvent systems as coating composition of the present invention in conjunction with above-mentioned substance, thereby reach rate of volatilization and the dissolving power identical with the solvent system that contains dimethylbenzene.Meanwhile, coating composition of the present invention selects substantially not contain or contain other composition component of very a small amount of dimethylbenzene.In coating composition of the present invention, the content of dimethylbenzene can be low to moderate about 5wt% of coating composition weight, is preferably low to moderate about 2wt% of coating composition weight, is more preferably low to moderate about 0.5wt% of coating composition weight.
Solvent system is present in said composition with coating based composition weight meter approximately 20 to the amount of about 65wt% conventionally.This solvent system conventionally comprise weighing scale approximately 45 to about 90wt% based on this solvent system, preferably approximately 50 to 80wt%, 50 to about 60wt% N-BUTYL ACETATE more preferably from about.In embodiment, described solvent system comprises approximately 45 to the N-BUTYL ACETATE of about 90wt% and approximately 10 to one or more in the following substances of about 55wt%: Three methyl Benzene, tetramethyl-benzene, propyl carbinol, methyl iso-butyl ketone (MIBK), 2-Butoxyethyl acetate, Diethylene Glycol butyl ether and 1-Methoxy-2-propyl acetate.Preferably, described solvent system comprises approximately 50 to the N-BUTYL ACETATE of about 80wt% and approximately 20 to one or more in the following substances of about 50wt%: Three methyl Benzene, tetramethyl-benzene, propyl carbinol, methyl iso-butyl ketone (MIBK), 2-Butoxyethyl acetate, Diethylene Glycol butyl ether and 1-Methoxy-2-propyl acetate.More preferably, described solvent system comprises approximately 50 to the N-BUTYL ACETATE of about 60wt% and approximately 40 to one or more in the following substances of about 50wt%: Three methyl Benzene, tetramethyl-benzene, propyl carbinol, methyl iso-butyl ketone (MIBK), 2-Butoxyethyl acetate, Diethylene Glycol butyl ether and 1-Methoxy-2-propyl acetate.
In a preferred embodiment, solvent system of the present invention is made up of following: (1) 50 N-BUTYL ACETATE to about 80wt%; (2) 10 Three methyl Benzenes to about 30wt%; (3) 0 tetramethyl-benzenes to about 10wt%; (4) 0 propyl carbinols to about 20wt%; (5) 0 methyl iso-butyl ketone (MIBK) to about 10wt%; (6) 0 2-Butoxyethyl acetates to about 15wt%; (7) 0 to about 10wt% Diethylene Glycol butyl ether; (8) 0 1-Methoxy-2-propyl acetates to about 10wt%, the gross weight of above-mentioned weight percent based on solvent system.
Pigment
Pigment for coating composition of the present invention can comprise metallic pigment and mill base.
The metallic pigment that use can be any metallic pigment well known by persons skilled in the art.Preferably, these metallic pigment are aluminium powders.The available example that can be used for aluminium powder of the present invention of business includes but not limited to: from Toyo5640, the Toyo5650 of Japan; From the emerging ZX0307-1 of family; From ssp0182, the sspj6471 combination of Silberline; From 639Z, the 639V of Basf; Or its combination etc.Those skilled in the art, after reading this specification sheets, can determine the content of aluminium powder in coating composition of the present invention.In concrete embodiment, in coating composition of the present invention, the amount that metallic pigment exist can be approximately 0.5 to about 100wt%, and preferably approximately 0.5 to about 85wt%, the weighing scale of pigment in coating based composition.
Being suitable for mill base of the present invention can be any commercially available pigment grind and obtains.Include but not limited to phthalocyanine blue, red iron oxide, iron oxide yellow, carbon black (as from the FW200 of Degussa) etc.Those skilled in the art, after reading this specification sheets, can determine the content of mill base in coating composition of the present invention according to the end-use of coating composition.
In addition, optionally also comprise mica powder according to coating composition of the present invention, it can be any mica powder that is applicable to purposes of the present invention well known by persons skilled in the art.The available example that can be used for mica powder of the present invention of business includes but not limited to: from Merck F60-50; From BASF 139Z, 639Z etc.; Or its combination etc.Those skilled in the art, after reading this specification sheets, can determine the content of mica powder in coating composition of the present invention according to the end-use of coating composition.
Binder component
Can comprise wax slurry, anti-sludging agent, micro-sol solution and/or flow agent according to the binder component in coating composition of the present invention, or any other components that need to add according to practical situation of those skilled in the art.Binder component can coating composition weighing scale approximately 0.1 to the amount of about 40wt% be present in coating composition.
Wax slurry can contribute to particularly aligning of aluminium powder of metallic pigment in coating composition of the present invention, also has anti-settling effect simultaneously.The wax slurry that can be used for purposes of the present invention well known by persons skilled in the art can use in the present invention, and it includes but not limited to acetic acid-vinyl acetate copolymer from EVA() the wax slurry prepared of wax, polyamide wax, polyethylene wax etc.In the preferred embodiment of the present invention, the wax that adopts slurry is the EVA wax slurry from PPG, and this EVA wax slurry is by commercially available EVA wax is improved and made, and this wax slurry is containing dimethylbenzene, Environmental Safety more in use.
In coating composition of the present invention, the amount that wax slurry exists can be approximately 0.1% to about 25wt%, is preferably 0.5%～20wt%, the gross weight of this weight percent coating based composition.
The selection of antisettling agent is not subject to special control, as long as it is applicable to the purposes of coating composition of the present invention.Add antisettling agent and solved removal containing the settlement issues producing after dimethylbenzene component, make prepared coating composition compared with prior art coating composition, substantially containing dimethylbenzene in the situation that, still can keep good performance.A lot of available antisettling agents of business can be used in the present invention.The example of the available antisettling agent of business for example can comprise: from Disparlon6900-20X, Disparlon4200, Disparlon6900-HV or its combination of Disparlon; From Rheox, BENTONE34 clay and the BENTONE38 clay etc. of Inc..
In coating composition of the present invention, the amount that antisettling agent exists can be 0 to about 5wt%, is preferably approximately 0.5 to about 3wt%, the gross weight of this weight percent coating based composition.
Coating composition of the present invention also can comprise micro-sol solution.Micro-glue is a kind of polymer particles with intramolecular crosslinking structure, has good processing characteristics and workability, can be used to coating composition to carry out modification, strengthens mechanical property and the weather resistance of paint film.The interpolation of micro-sol solution has solved removes containing causing supporting ability variation after dimethylbenzene component, the aluminium powder orientation defect such as die down.The micro-sol solution that can be used for purposes of the present invention well known by persons skilled in the art can use in the present invention.One preferred embodiment in, the present invention adopts the micro-sol solution of vinylformic acid.
In coating composition of the present invention, the amount that micro-sol solution exists can be 0 to about 5wt%, is preferably approximately 1 to about 4wt%, the gross weight of this weight percent coating based composition.
Coating composition of the present invention also can comprise flow agent.Any flow agent that can be used for purposes of the present invention well known by persons skilled in the art can be with in the present invention, such as vinylformic acid levelling agent, silicon class flow agent etc.The example of the available flow agent of business that can use in the present invention includes but not limited to: from BYK320, the BYK306 of German Bi Ke; From the PA56 of Tao Shi; Or its combination.In coating composition of the present invention, the amount that flow agent exists can be 0 to about 5wt%, and preferably approximately 0.5 to about 4wt%, the gross weight of this weight percent coating based composition.
Coating composition of the present invention can also comprise a lot of other optional components to meet except other purposes as herein described.Those skilled in the art, after reading this specification sheets, can determine the content of described optional components at coating composition according to end-use.
In another embodiment, the invention provides a kind of method of the solvent-borne coating composition of preparing low xylene content, it comprises the steps:
(1) butyl cellulose derivative is slowly joined in appropriate N-BUTYL ACETATE to stirring and dissolving and form the first pre-composition of water white transparency state;
(2) a part of binder component is slowly joined in N-BUTYL ACETATE and stirred, add again aminoresin, form the second pre-composition, described a part of binder component accounts for the 20-50% of this second pre-composition weight, described aminoresin accounts for the 10-30% of this second pre-composition weight, and surplus is N-BUTYL ACETATE;
(3) metallic pigment are soaked fully and soaked with N-BUTYL ACETATE, form the 3rd pre-composition;
(4), by vibrin, residue aminoresin, residual solvent, other binder components, optional mill base and mix and stir from first, second and third above-mentioned pre-composition, obtain the coating composition of low xylene content of the present invention.
In above-mentioned steps, the gross weight of the amount coating based composition of solvent system is approximately 20 to about 65wt%.The gross weight of the amount coating based composition of butyl cellulose derivative is approximately 2 to about 10wt%.Described a part of binder component is micro-sol solution, and the gross weight of the amount coating based composition of micro-sol solution is 0 to about 5wt%.The gross weight of the amount of metallic pigment based on pigment is approximately 0.5 to about 100wt%.The gross weight of the amount coating based composition of vibrin is approximately 5 to about 35wt%.Preferably, in step (2), the weight ratio of described a part of binder component, N-BUTYL ACETATE and aminoresin is about 2:2:1.
In a preferred implementation, the invention provides a kind of method of the solvent-borne coating composition of preparing low xylene content, it comprises the steps:
(1) butyl cellulose derivative is slowly joined in appropriate N-BUTYL ACETATE to stirring and dissolving and form the first pre-composition of water white transparency state;
(2) micro-sol solution is slowly joined in N-BUTYL ACETATE and stirred, add aminoresin again, form the second pre-composition, described micro-sol solution accounts for the 20-50% of the second pre-composition weight, described aminoresin accounts for the 10-30% of the second pre-composition weight, and surplus is N-BUTYL ACETATE;
(3) metallic pigment are soaked fully and soaked with N-BUTYL ACETATE, form the 3rd pre-composition;
(4), by vibrin, residue aminoresin, residual solvent, binder component, optional mill base and mix and stir from first, second and third above-mentioned pre-composition, obtain the coating composition of low xylene content of the present invention.
In above-mentioned steps, the gross weight of the amount coating based composition of solvent system is approximately 20 to about 65wt%.The gross weight of the amount coating based composition of butyl cellulose derivative is approximately 2 to about 10wt%.The gross weight of the amount coating based composition of described micro-sol solution is 0 to about 5wt%.The gross weight of the amount of metallic pigment based on pigment is approximately 0.5 to about 100wt%.The gross weight of the amount coating based composition of vibrin is approximately 5 to about 35wt%.Described binder component comprises wax slurry, anti-sludging agent and/or flow agent.Preferably, in step (2), the weight ratio of micro-sol solution, N-BUTYL ACETATE and aminoresin is about 2:2:1.
In another embodiment, the present invention also provides a kind of by coating composition of the present invention is applied to the goods that suitable substrate makes.Described substrate is preferably metal base.
Embodiment
The present invention can further understand with reference to following examples, and these embodiment are not interpreted as limiting the scope of the invention.In the time relating to component concentration, all represent with weight percent.
Embodiment 1
According to the formula composition shown in following table 1, the coating composition according to following step Preparation Example 1:
(1) whole cellulose acetate butyrates (CAB) are slowly joined in appropriate N-BUTYL ACETATE to stirring and dissolving and form the first pre-composition of water white transparency state;
(2) whole micro-sol solutions are slowly joined in equivalent N-BUTYL ACETATE and stirred, then add 1/2nd the aminoresin that is approximately quantity of solvent, form the second pre-composition;
(3) whole aluminium powders N-BUTYL ACETATE is soaked fully wetting, form the 3rd pre-composition;
(4) other components and above-mentioned first, second and third pre-composition during all polyester resin, residue aminoresin, residue N-BUTYL ACETATE, table 1 are filled a prescription mixes and stirs, and obtains coating composition of the present invention.
Embodiment 2-4
According to the formula composition shown in following table 1, according to the coating composition of step Preparation Example 2-4 as described in Example 1.
Comparative example 1-5
According to the formula composition shown in following table 1, prepare the coating composition of comparative example 1-5 according to step well known to those skilled in the art.Coating composition in this comparative example 1 and 3-5 is prior art coating composition, and in comparative example 2, only simply removes diformazan benzo N-BUTYL ACETATE and replace.
The formula of the coating composition of table 1. embodiment and comparative example
The properties comparison of the coating composition of embodiment and comparative example
In order to carry out the test of color and outward appearance, need to first each coating composition be sprayed on after forming paint film in suitable substrate and measure again.Coating composition can carry out reciprocating engine or revolve a glass mode spraying, and coating comprises middle painting, colored paint, varnish.It is just meaningful compared with color that colored paint thickness need be greater than opacifying power Film Thickness Ratio.After overbaking (approximately 130 ℃-160 ℃), paint dry film is measured.
1. coating composition outward appearance
The clarity, tangerine peel R value, long wave, shortwave and the gloss that utilize Gardener tangerine peel instrument to measure (from Gardener company) to measure the paint dry film that each coating composition forms, measuring result is shown in following table 2.
From this table, can observe, the appearance property that coating composition of the present invention is shown is suitable with prior art coating composition, has substantially kept good performance.
And in comparative example 2, the colored paint surface alignment confusion obtaining, thus the outward appearance of dry film affected, cause tangerine peel serious, clarity variation.
Table 2. semblance measure result
| ? | ? | Clarity | Tangerine peel R value | Long wave | Shortwave | Gloss |
| Embodiment 1 | Level | 84.4 | 10.2 | 2.2 | 6.1 | 95 |
| ? | Vertically | 83.9 | 9.6 | 2.8 | 5.5 | 95 |
| Embodiment 2 | Level | 90.2 | 10.2 | 2.1 | 5.8 | 98 |
| ? | Vertically | 88.9 | 9.7 | 2.8 | 6.4 | 98 |
| Embodiment 3 | Level | 84.3 | 9.9 | 2.4 | 8.7 | 98 |
| ? | Vertically | 84 | 8.3 | 5.1 | 10.9 | 98 |
| Embodiment 4 | Level | 84.8 | 9.9 | 2.4 | 7.8 | 101 |
| ? | Vertically | 84.2 | 8.7 | 4.2 | 9.0 | 101 |
| Comparative example 1 | Level | 83.6 | 10.3 | 1.9 | 4.6 | 95 |
| ? | Vertically | 83.3 | 9.5 | 2.9 | 4.8 | 95 |
| Comparative example 2 | Level | 78.6 | 8.6 | 3.7 | 8.9 | 95 |
| ? | Vertically | 75.8 | 8.4 | 3.9 | 9.5 | 95 |
| Comparative example 3 | Level | 91.2 | 10.3 | 1.9 | 5.7 | 98 |
| ? | Vertically | 89.1 | 9.7 | 2.9 | 6.5 | 98 |
| Comparative example 4 | Level | 84.6 | 9.6 | 2.7 | 8.0 | 98 |
| ? | Vertically | 83.5 | 8.3 | 5.1 | 10.3 | 98 |
| Comparative example 5 | Level | 84.4 | 10.1 | 2.2 | 7.3 | 101 |
| ? | Vertically | 84.3 | 8.7 | 4.2 | 8.4 | 100 |
2. color and aluminium powder orientation
Utilize X-rite MA68 surveying instrument (from X-rite company) to measure color and the aluminium powder orientation of the paint dry film that each coating composition forms.Measuring result is shown in following table 3.
By brightness is measured, can reflect the difference of aluminium powder orientation in coating composition.From this table, can observe, coating composition brightness of the present invention is suitable with prior art coating composition.And in comparative example 2, only simply remove after dimethylbenzene, causing aluminium powder lack of alignment, brightness is obviously affected.
Table 3. color and aluminium powder orientation survey result
3. resistance to settling
To be placed in respectively 50ml graduated cylinder from each sample of embodiment 1-4 and comparative example 1-5, respectively at the 0th day, the 1st day, the 3rd day, the 7th day with within the 14th day, observe and pass through the settleability of the each Coating material composition matter sample of graduated cylinder read-record.Measuring result is shown in following table 4.
From this table, can observe, along with the prolongation of time of repose, the aluminium powder pigment that in each coating composition, density is larger all can be uniformly distributed state from initial 50ml, little by little precipitation compression downwards.The comparative example 2 of wherein only simply removing dimethylbenzene is particularly outstanding.All the other can show identical rational state.
The comparison of table 4. settleability
Those skilled in the art can, according to description above, carry out various changes to the present invention in the situation that not deviating from spirit and scope of the invention.In addition, those skilled in the art will recognize that description above only by way of example, and be not intended to limit the invention scope of describing in claims.
Claims (11)
1. a coating composition, it comprises:
(1) resin Composition, it comprises vibrin, aminoresin and butyl cellulose derivative;
(2) solvent system, its comprise N-BUTYL ACETATE and following in one or more of: Three methyl Benzene, tetramethyl-benzene, propyl carbinol, methyl iso-butyl ketone (MIBK), 2-Butoxyethyl acetate, Diethylene Glycol butyl ether and 1-Methoxy-2-propyl acetate,
In wherein said coating composition, the content of dimethylbenzene is lower than the 5wt% of this coating composition weight.
2. a coating composition, it comprises:
(1) 10 resin Composition to 60wt%, it comprises vibrin, aminoresin and butyl cellulose derivative;
(2) 20 solvent systems to 65wt%, described solvent system comprise N-BUTYL ACETATE and following in one or more of: Three methyl Benzene, tetramethyl-benzene, propyl carbinol, methyl iso-butyl ketone (MIBK), 2-Butoxyethyl acetate, Diethylene Glycol butyl ether and 1-Methoxy-2-propyl acetate;
(3) 0.5 pigment to 10wt%; With
(4) 0.1 binder components to 40wt%, the gross weight of the equal coating based composition of above-mentioned weight percent,
In wherein said coating composition, the content of dimethylbenzene is lower than the 5wt% of this coating composition weight.
3. coating composition as claimed in claim 1 or 2, in wherein said coating composition, the content of dimethylbenzene is lower than the 2wt% of this coating composition weight.
4. coating composition as claimed in claim 3, in wherein said coating composition, the content of dimethylbenzene is lower than the 0.5wt% of this coating composition weight.
5. coating composition as claimed in claim 1 or 2, wherein said butyl cellulose derivative comprises cellulose acetate butyrate.
6. coating composition as claimed in claim 2, wherein said binder component comprises wax slurry, anti-sludging agent, micro-sol solution and/or flow agent.
7. coating composition as claimed in claim 6, wherein said wax slurry is not for containing the EVA wax slurry of dimethylbenzene, and the content of described EVA wax slurry counts 0.1% to 25wt% based on described coating composition weight.
8. a method of preparing coating composition as claimed in claim 2, it comprises the steps:
(1) butyl cellulose derivative is slowly joined in appropriate N-BUTYL ACETATE to stirring and dissolving and form the first pre-composition;
(2) binder component is slowly joined in N-BUTYL ACETATE and stirred, add aminoresin again, form the second pre-composition, described binder component accounts for the 20-50% of the second pre-composition weight, described aminoresin accounts for the 10-30% of the second pre-composition weight, and surplus is N-BUTYL ACETATE;
(3) pigment is soaked fully and soaked with N-BUTYL ACETATE, form the 3rd pre-composition;
(4) vibrin, residue aminoresin, residue N-BUTYL ACETATE and solvent system remainder and described the first pre-composition, the second pre-composition, the 3rd pre-composition mixed and stirred, obtaining described coating composition.
9. method according to claim 8, wherein, in step (2), the weight ratio of described binder component, N-BUTYL ACETATE and aminoresin is about 2:2:1.
10. goods, described goods are by being applied to the coating composition described in claim 1 or 2 in substrate and making.
11. goods according to claim 10, wherein said substrate is metal.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104877491A (en) * | 2015-06-02 | 2015-09-02 | 柳州龙溪化工有限公司 | Heat reflection and insulation type car paint mixing gloss oil and metal gleam finish coating |
| CN113789107A (en) * | 2021-10-21 | 2021-12-14 | 扬州工业职业技术学院 | Preparation method of reflective coating for outdoor pre-coiled steel plate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1629235A (en) * | 2003-12-18 | 2005-06-22 | 上海涂料研究所南汇实验厂 | Formulation for vehicle paint |
| CN101735714A (en) * | 2009-11-27 | 2010-06-16 | 深圳市威凯士化工涂料有限公司 | Environmentally-friendly low-temperature curing metallic gold coating, manufacturing process and application of coating serving as iron printed tank coating in directly coating roll |
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2013
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1629235A (en) * | 2003-12-18 | 2005-06-22 | 上海涂料研究所南汇实验厂 | Formulation for vehicle paint |
| CN101735714A (en) * | 2009-11-27 | 2010-06-16 | 深圳市威凯士化工涂料有限公司 | Environmentally-friendly low-temperature curing metallic gold coating, manufacturing process and application of coating serving as iron printed tank coating in directly coating roll |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104877491A (en) * | 2015-06-02 | 2015-09-02 | 柳州龙溪化工有限公司 | Heat reflection and insulation type car paint mixing gloss oil and metal gleam finish coating |
| CN113789107A (en) * | 2021-10-21 | 2021-12-14 | 扬州工业职业技术学院 | Preparation method of reflective coating for outdoor pre-coiled steel plate |
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| CN103788838B (en) | 2015-12-09 |
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