CN107828331A - A kind of net taste type alcohol acid and polyurethane black finish paint of high solid - Google Patents
A kind of net taste type alcohol acid and polyurethane black finish paint of high solid Download PDFInfo
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- CN107828331A CN107828331A CN201710915388.1A CN201710915388A CN107828331A CN 107828331 A CN107828331 A CN 107828331A CN 201710915388 A CN201710915388 A CN 201710915388A CN 107828331 A CN107828331 A CN 107828331A
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/68—Unsaturated polyesters
- C08G18/683—Unsaturated polyesters containing cyclic groups
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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
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/46—Polyesters chemically modified by esterification
- C08G63/48—Polyesters chemically modified by esterification by unsaturated higher fatty oils or their acids; by resin acids
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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
- C09D17/00—Pigment pastes, e.g. for mixing in paints
- C09D17/004—Pigment pastes, e.g. for mixing in paints containing an inorganic pigment
- C09D17/005—Carbon black
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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Abstract
The present invention relates to a kind of net taste type alcohol acid and polyurethane black finish paint of high solid, it is made up of the component of A, B two, A:B=1:0.5~1.2；Component A is made up of high solid net taste alkyd resin, hydroxy-containing resin, carbon black color slurry, auxiliary agent and solvent；B component is polyurethane curing agent；The present invention also provides a kind of preparation method of the net taste alkyd resin of high solid；The net taste type alcohol acid and polyurethane black finish paint of high solid of the present invention, film odorlessness after solid point >=80%, VOC≤200g/L, application 48h, limits of harmful substances meet standard GB 18,581 2009, HJ 414 2007 requirement；With high-solid lower-viscosity, quick-drying, do not precipitate during storage；Film mirror effect, 140 μm of one-pass film-forming thickness G T.GT.GT, not sagging；With excellent adhesive force, water resistance, chemical-resistant, resistance to marring and mechanical performance；It is widely used in the applications such as woodenware, metal, glass, concrete.
Description
Technical field
The present invention relates to a kind of polyurethane coating, more particularly to a kind of net taste type polyurethane black finish paint of high solid,
Belong to technical field of environmental protection paint.
Background technology
Polyurethane coating is a kind of coating more common at present, and bicomponent polyurethane coating is by isocyanate prepolymer and contains
Hydroxy resin two parts form, commonly referred to as host component and curing agent component；Propylene is divided into according to the difference of hydroxy-containing component
The kinds such as sour polyurethane, alcohol acid and polyurethane, polyester-polyurethane, polyether-polyurethane, epoxy polyurethane.Bicomponent polyurethane coating has
Have that film-forming temperature is low, adhesive force is strong, wearability is good, hardness is big and chemicals-resistant, good weatherability and a good mechanical performance etc.,
Woodwork coating, automobile repairing paint, anticorrosive paint, floor paint, electronic paint, sapecial coating, polyurethane water-proof is widely used in apply
Material etc..
Ten thousand tons of VOC1800 of China's year discharge at present, wherein wide important topic in paint industry accounts for 1/4, is that out-and-out VOC emission is big
Family.The U.S. in 1966 discloses the regulation of the first in the world control solvent contamination, it is specified that solvent mustn't exceed in coating
17%；European Union in 2002 has promulgated that paint solvent limiting emission makes, it is desirable to cut down solvent discharge amount 50% by 2010；Limitation
Poisonous and harmful solvent is replaced in the solvent load of wide important topic in paint industry, or with low poison solvent.
On January 26th, 2015, China puts into effect《On imposing the notice of the consumption tax to battery, coating industry》, to construction
Coating of the VOC more than 420g/L imposes 4% consumption tax under state；European Union limits to industrial coating VOC to be divided to for two phases, i.e., 2007
VOC limit values will reach 420~450g/L, then drop within 2010 300g/L, then drop to 250g/L within 2015, and this is obviously and American-European
National gap is bigger.The VOC emission to the coating domestic over the past two years system of keeping under strict control and the tight regulation of environmental protection, in addition raw material hold
It is continuous to go up, promote coatings enterprises hydrotropism coating, powder coating, UV coating and the development of high solid coating technique direction strongly.
High solid coating refers to containing more than 70% parts by weight or 80% with a kind of coating of non-volatile point of upper volume, it
VOC discharge can be significantly reduced, saves substantial amounts of organic solvent, and the thickness of an application is the 1~4 of traditional coating
Times, it is possible to reduce construction times are resource-savings, save the energy, low stain, a kind of development coating with market future.
High solid coating uses the fluoropolymer resin that relative molecular mass is less, molecular weight distribution is very narrow, therefore high
Gu the core technology of part coating is the relative molecular mass for trying to reduce conventional resins, viscosity is reduced, improves the dissolubility of resin,
Cross-linking reaction is produced by effective active group in film forming procedure, ensures that perfect coating quality reaches traditional solvent-borne coating
It is horizontal or higher.
In suite room furniture field of coating, a problem for perplexing industry be furniture be sent in terminal client man install when it is anti-
It is big to reflect smell, is pungent unpleasant, many customer requirements are returned goods or exchanged goods.With raising of the people to environmental requirement, solvent based coating
In addition to having strict limitation to VOC, to the sensitiveness more and more higher of smell；Therefore, various regions government has all put into effect solvent in succession
The standard of the net taste coating of type, such as Guangdong Province's provincial standard《Interior decoration decoration is limited with net taste solvent wood coatings harmful substance
Amount》, Shenzhen's standard《School's floor coatings limits of harmful substances》Made strict rules Deng the smell to coating.It is required that application 48
Film does not remain excitatory smell after hour, reaches net taste requirement.
Chinese patent CN104710928A discloses a kind of net taste type scratch-resistant polyurethane matt black finish for woodware of environmental protection, by
First component and second part polyurethane curing agent composition, the weight proportion of the first and second components is 1:0.5；First component is by net taste type scratch resistance
Alkyd resin, flatting silica, dispersant, carbon black color slurry, modified levelling agent, defoamer, anti-settling agent and solvent composition；Net taste alcohol used
Acid resin is solid to be contained for 70%；Dumb light black flour paint benzene-free ketone-free made from the invention, without heavy metal, film reaches after application 48h
Net taste requirement；But the solid under it is constructed divides ＜ 55%, VOC ＞ 450g/L.
Chinese patent CN104710929A discloses a kind of net taste type scratch-resistant polyurethane woodenware light black flour paint of environmental protection, by
First component and second part polyurethane curing agent composition, the weight proportion of the first and second components is 1:0.5；First component is by net taste type scratch resistance
Alkyd resin, acrylic resin, aldehyde ketone resin, carbon black color slurry, auxiliary agent and solvent composition；Net taste alkyd resin used contains admittedly is
70%.Light black flour paint benzene-free ketone-free made from the invention, without heavy metal, film reaches net taste requirement after application 48h；But its
Solid under construction divides ＜ 57%, VOC ＞ 430g/L.
Used in above-mentioned patent taste alkyd resin molecular chain length, molecular weight are high only, viscosity is big, hydroxyl value is relatively low, and solid point
＜ 70%, it is difficult to prepare the coating of high solid.
The content of the invention
The net taste type alcohol acid and polyurethane black finish paint of described high solid, the present invention is using 93 ± 2% high solids, molecule
Measure relatively small and distribution is very narrow, viscosity is low, hydroxyl value is high, the net taste type alkyd resin of benzene-free ketone-free.
The net taste type alkyd resin of described high solid, it is exactly in resin synthesis process, tries to reduce the viscous of resin
The activity (hydroxy radical content) of degree, the molecular weight of control resin and raising resin, but be difficult to if the molecular weight of resin is too small
Film forming, therefore the control of alkyd resin molecular weight is between 2000~3000；Reduce resin viscosity must control strand growth,
Increase the active group of resin and improve dissolubility.
The net taste alkyd resin of high solid 93 ± 2% is obtained, the present invention is adjusted using benzoic acid as modifying agent
Degree of functionality, the growth of polyester chain is controlled, the molecular weight of needs is obtained with this；Hydroxyl can both be improved by being re-introduced into tertiary carbonic acid glycidyl ester
Base content increase activity, can reduce resin viscosity and acid number again, while can also increase adhesive force, improve chemical-resistant, and
The dissolubility of resin is greatly improved.
Can not make reflux solvent with dimethylbenzene in addition, the present invention using environmental protection without aromatic hydrocarbon reflux solvent, by diformazan basic ring
The hydrogenation dearomatization solvent D40 (156~200 DEG C of boiling range) of alkane (118~122 DEG C of boiling range) and colorless and odorless is prepared by a certain percentage
Form, its boiling range is close with dimethylbenzene, and azeotropic mixture can be formed with water, has backflow at 125~160 DEG C, meets alkyd resin
Manufacturing technique requirent.
To improve the net taste after alkyd resin film forming, controlled first by the ratio of benzoic acid, polyalcohol and dihydric alcohol
The molecule branched structure and degree of functionality of resin processed, second step introduce tertiary carbonic acid glycidyl and are more distributed in side chain by hydroxyl
On：On the one hand, increase active group can be effectively reduced resin viscosity, obtain the molecular weight of needs；On the other hand, on side chain
Hydroxyl steric hindrance is small, and reactivity is high, makes effective crosslinking points, forms network structure, improves film performance；Simultaneously
The plexiglas temperature of synthesis is higher, so as to accelerate the convection current of film internal solvent, is advantageous to solvent release, so as in film
Net taste requirement can be reached after application 48h.
The net taste alkyd resin of described high solid, by weight percentage meter, its composition are：Vegetable fatty acids 20.0%~
30.0%th, organic acid anhydride 25.0%~45.0%, benzoic acid 2.0%~8.0%, polyalcohol 20.0%~30.0%, esterification are urged
Agent 0.2%~0.6%, C10Tertiary carbonic acid glycidyl ester 6.0%~15.0%, reflux solvent 2.0%~8.0%, solvent
2.0%~8.0%.
Wherein, described vegetable fatty acids are refined soybean oil, castor oil, tall oil, one kind in coconut oil or several
The combination of kind.
Described organic acid anhydride is phthalic anhydride, M-phthalic acid (acid anhydride), terephthalic acid (TPA) (acid anhydride), cis-butenedioic anhydride, maleic anhydride, two
One or more of combinations in acid and derivative or decanedioic acid and derivative.
Described polyalcohol is glycerine, trimethylolpropane, trimethylolethane, neopentyl glycol, 1,3- propane diols, second
One or more of combinations in glycol, 1,4- butanediols, 1,6-HD, diethylene glycol, dipropylene glycol.
Described esterification catalyst is at least one of organotin catalysts or rare earth catalyst.
Described reflux solvent forms：Dimethyl thiacyclohexane 65.0%~80.0%, D40 take off fragrant solvent 20.0%~
35.0%.
The present invention provides a kind of preparation method of the net taste alkyd resin of high solid, and has applied for patent；Described Gao Gu
The net taste alkyd resin of body point, its preparation technology are as follows：
A), by weight percentage, vegetable fatty acids, organic acid anhydride, part polyalcohol are added in reactor successively,
Begin to warm up, after the complete melting of material in kettle, be passed through N2, start to stir and be warming up to 120 DEG C, add esterification catalyst, so
After be warming up to 165 DEG C~180 DEG C, add benzoic acid and reflux solvent, 2~3h of insulation reaction, and remove back flow reaction and bring out
Moisture content, and the reflux solvent to cool down is pumped at the top of packed tower with circulation；
B), when the water separated is seldom, remaining polyalcohol and C are added10Tertiary carbonic acid glycidyl ester, it is warming up to 190 DEG C
Insulation reaction 1h, then 200 DEG C of insulation reaction 1h are warming up to, then it is warming up to 210 DEG C of 1~3h of insulation reaction；
C), sample, after the assay was approved, stopping is passed through N2, less than 150 DEG C are cooled to, adds diluted solvent, stirs 20min,
Filter and package, obtain the net taste alkyd resin of 93 ± 2% high solid.
The net taste alkyd resin number-average molecular weight Mn of described high solid is 2200~3000, and benzene-free ketone-free, solid are divided into
93 ± 2%, viscosity (form pipe/25 DEG C) ＜ 10s, acid number≤8mgKOH/g, hydroxyl value >=135mgKOH/g.
A kind of the present invention is intended to provide net taste type alcohol acid and polyurethane black finish paint of high solid.
The net taste type alcohol acid and polyurethane black finish paint of high solid of the present invention, is made up of, A, B component the component of A, B two
Weight proportion be 1:0.5~1.2；Wherein, by weight percentage, described component A composition is：The net taste alcohol of high solid
Acid resin 60.0%~85.0%, hydroxy-containing resin 0%~25.0%, carbon black color slurry 5.0%~20.0%, delustering agent 0%~
6.0%th, dispersant 0%~3.0%, defoamer 0.1%~0.5%, levelling agent 0.1%~0.5%, thickening anti-settling agent 0.2%
~1.0% and solvent 3.0%~10.0%；Described B component is TDI tripolymers, HDI trimer, IPDI tripolymers, MDI tri-
Aggressiveness, TDI-HDI mixed trimers, TDI/TMP addition products or HDI biuret polyurethane curing agents to less than one kind, it is described
Polyurethane curing agent be free isocyanate monomer content≤0.5%, solid point >=70% environment-friendlycuring curing agent.
Described hydroxy-containing resin is Hydroxylated acrylic resin, urea formaldehyde, polyester resin, epoxy resin or organosilicon tree
Fat.
Described carbon black color slurry fineness≤10 μm；By weight percentage, consisting of：Carbon black 8.0%~30.0%,
The net taste alkyd resin 15.0%~25.0% of high solid, mill base dispersant 6.0%~20.0%, defoamer 0.2%~
0.5%th, thicken anti-settling agent 0.5%~3.0%, remaining be solvent.
Wherein, described carbon black be REGAL400R, Monarch1300, Monarch900, Special black 4,
Special black 6、Special black 550、FW18、FW285、FW200、 MA-7、MA-100、MA#40、
Raven3500, Raven1255 or Raven3600's is any.
Described carbon black color slurry, its preparation process are as follows：By formulation weight ratio, solvent and high solid are added in dispersion bucket
Divide net taste alkyd resin and be uniformly dissolved, add mill base dispersant, defoamer, stir, be slowly added to carbon black toner, then
In 1000~1200r/min 30~45min of high shear, sand mill circular grinding is moved on to 3~4 times, it is thin until mill base
Degree particle diameter reaches≤10 μm, the deaeration in paint mixing bucket, adds thickening anti-settling agent and adjusts and glue, filters and packages, obtain the carbon black color slurry.
Isoamyl acetate can improve the dissolubility of alkyd resin, described solvent, and it forms and comprises at least 15.0%~
30.0% isoamyl acetate, other compositions are butyl acetate, sec-Butyl Acetate, propylene glycol monomethyl ether, propandiol butyl ether, carbonic acid two
At least one of methyl esters.
Described resin, auxiliary agent, curing agent all aromatic-free class, glycol ether and its esters, ketone, alkyl chloride hydro carbons are molten
Agent.
High solid alcohol acid and polyurethane black finish paint produced by the present invention, its weight solid >=80%, VOC under constructing
Film odorlessness after≤200g/L, application 48h, and limits of harmful substances meets national compulsory standard GB/T 18581-
2009th, professional standard HJ414-2007 and provincial standard《Net taste solvent wood coatings》Requirement.
The net taste type alcohol acid and polyurethane black finish paint of high solid produced by the present invention, high-solid lower-viscosity, do not precipitate during storage；
Solvent volatilizees in film forming procedure, and fast, rate of drying is fast, and film levelability, good, 140 μm of the one-pass film-forming thickness G T.GT.GT of the transparency, no
Produce sagging；And film has excellent adhesive force, water resistance, chemical-resistant, wearability, resistance to marring and mechanicalness
Energy；It is widely used in the surface protections such as furniture, musical instrument, metal, concrete and decoration.
Embodiment
Preparation of the present invention with the following Examples to the described net taste type alcohol acid and polyurethane black finish paint of high solid is done
Further describe.
Embodiment 1
A kind of net taste alkyd resin A of high solid, its preparation technology are as follows：
A), by weight percentage, successively by 23.5 parts of castor oil, 7.2 parts of M-phthalic acid, 26.5 parts of phthalic anhydride, hexanedioic acid
3.0 parts, 10.0 parts of glycerine, 5.0 parts of trimethylolpropane, 4.5 parts of BDO be added in reactor, begin to warm up, when
In kettle after the complete melting of material, N is passed through2, start to stir and be warming up to 120 DEG C, add 0.5 part of organotin catalysts, Ran Housheng
Temperature adds 3.5 parts, 2~3h of insulation reaction of 6.0 parts of benzoic acid and reflux solvent, and remove back flow reaction to 165 DEG C~180 DEG C
6.2 parts of the water brought out, and the reflux solvent to cool down is pumped at the top of packed tower with circulation and returns to reactor；
B), when the water separated is seldom, C is added103.5 parts of 10.0 parts of tertiary carbonic acid glycidyl ester and Isosorbide-5-Nitrae-butanediol, rise
Temperature is to 190 DEG C of insulation reaction 1h, then is warming up to 200 DEG C of insulation reaction 1h, is then warming up to 210 DEG C of 2~3h of insulation reaction；
C), sample, after the assay was approved, stopping is passed through N2, less than 150 DEG C are cooled to, adds 3.0 parts of diluted solvent, stirring
20min, filter and package, obtain the net taste alkyd resin A of the high solid.
Embodiment 2
A kind of net taste alkyd resin B of high solid, its preparation technology are as follows：
A), by weight percentage, successively by 25.0 parts of soybean oil, 18.0 parts of phthalic anhydride, 12.0 parts of hexanedioic acid, maleic anhydride
4.5 parts, 12.0 parts of glycerine, 5.2 parts of trimethylolpropane, 4.0 parts of neopentyl glycol be added in reactor, begin to warm up, work as kettle
After the interior complete melting of material, N is passed through2, start to stir and be warming up to 120 DEG C, add 0.4 part of rare earth catalyst, then heat to
165 DEG C~180 DEG C, 3.2 parts, 2~3h of insulation reaction of 6.0 parts of benzoic acid and reflux solvent are added, and remove back flow reaction and take out of
5.8 parts of the water come, and the reflux solvent to cool down is pumped at the top of packed tower with circulation and returns to reactor；
B), when the water separated is seldom, C is added103.5 parts of 8.0 parts of tertiary carbonic acid glycidyl ester and diethylene glycol, are warming up to
190 DEG C of insulation reaction 1h, then 200 DEG C of insulation reaction 1h are warming up to, then it is warming up to 210 DEG C of 1~2h of insulation reaction；
C), sample, after the assay was approved, stopping is passed through N2, less than 150 DEG C are cooled to, adds 4.0 parts of diluted solvent, stirring
20min, filter and package, obtain the net taste alkyd resin B of the high solid.
To the net taste alkyd resin of high solid in the embodiment of the present invention, detected according to relevant criterion, its technology refers to
Mark is as shown in table 1.
Table 1：The net taste alkyd resin technical indicator of high solid
| Detection project | Resin A | Resin B |
| Color (Fe-Co colorimetrics), number | ≤3 | ≤3 |
| Solid content, % | 93.0 | 92.2 |
| Viscosity (form pipe/25 DEG C), s | 10.0 | 8.0 |
| Acid number, mgKOH/g | 7.5 | 7.8 |
| Hydroxyl value, mgKOH/g | 142 | 138 |
| Molecular weight Mn | 2650 | 2760 |
Embodiment 3
A kind of carbon black color slurry, its preparation technology are as follows：
By formulation weight ratio, 47.7 parts of solvent and the net taste alkyd resin A21.5 parts of high solid are added simultaneously in dispersion bucket
It is uniformly dissolved, adds 12.0 parts of EFKA-4320 mill bases dispersant, 0.3 part of defoamer, stir, be slowly added to Special
18.0 parts of 6.0 carbon blacks of biack, then in 1000~1200r/min 30~45min of high shear, move on to sand mill circulation
Grinding 3~4 times, until the fineness particle diameter of mill base reaches≤10 μm, the deaeration in paint mixing bucket, 0.5 part of addition thickening anti-settling agent is adjusted
It is viscous, filter and package, obtain the color to contain the carbon black color slurry for being 50% for 18%, non-volatile content.
Embodiment 4
A kind of net taste type alcohol acid and polyurethane black matte finish paint of high solid：
Component A：High solid alkyd resin A78.5 parts, 10.0 parts of carbon black color slurry, 4.6 parts of delustering agent, dispersant 1.2
Part, 0.3 part of levelling agent, 0.2 part of defoamer, 0.5 part of anti-settling agent and 4.7 parts of solvent；B component：75% solid divides HDI trimer；
By A:B=1:1 proportioning paint, adds the requirement that appropriate diluent meets airless spraying.
Embodiment 5
A kind of net taste type alcohol acid and polyurethane black light top coat top coat of high solid：
Component A：80.0 parts of high solid alkyd resin B, 5.0 parts of 80% Hydroxylated acrylic resin, 9.0 parts of carbon black color slurry,
5.0 parts of 0.3 part of levelling agent, 0.2 part of defoamer, 0.5 part of anti-settling agent and solvent；B components：75% solid divides TDI/TMP additions
Thing；By A:B=1:1.05 proportioning paints, add the requirement that appropriate diluent meets airless spraying.
According to relevant national standard, to the net taste type alcohol acid and polyurethane black finish paint of high solid made from the embodiment of the present invention
Performance detected, test result is as shown in table 2.
Table 2：The net taste type alcohol acid and polyurethane black finish paint performance indications of high solid
Although the present invention has been explained in detail and has been cited embodiment, for one of ordinary skill in the art, show
Various schemes, modification and the change that can so make as specified above, should be construed as being included within the scope of claim.
Claims (10)
- A kind of 1. net taste type alcohol acid and polyurethane black finish paint of high solid, it is characterised in that the net taste type alcohol of described high solid Sour polyurethane black finish paint, it is made up of the component of A, B two, A, the weight proportion of B component are 1:0.5~1.2；By weight percentage Meter, described component A composition are：The net taste alkyd resin 60.0%~85.0% of high solid, hydroxy-containing resin 0%~ 25.0%th, carbon black color slurry 5.0%~20.0%, delustering agent 0%~6.0%, dispersant 0%~3.0%, defoamer 0.1%~ 0.5%th, levelling agent 0.1%~0.5%, thickening anti-settling agent 0.2%~1.0% and solvent 3.0%~10.0%；Described B groups It is divided into TDI tripolymers, HDI trimer, IPDI tripolymers, MDI tripolymers, TDI-HDI mixed trimers, TDI/TMP addition products Or HDI biuret polyurethane curing agents is a kind of to being less than, described polyurethane curing agent is free isocyanate monomer content ≤ 0.5%, >=70% environment-friendlycuring curing agent of solid point；Wherein, the net taste alkyd resin of described high solid, its number-average molecular weight Mn are 2200~3000, benzene-free ketone-free, solid It is divided into 93 ± 2%, viscosity (form pipe/25 DEG C) ＜ 10s, acid number≤8mgKOH/g, hydroxyl value >=135mgKOH/g；The net taste alkyd resin of described high solid, by weight percentage meter, its composition are：Vegetable fatty acids 20.0%~ 30.0%th, organic acid anhydride 25.0%~45.0%, benzoic acid 2.0%~8.0%, polyalcohol 20.0%~30.0%, esterification are urged Agent 0.2%~0.6%, C10Tertiary carbonic acid glycidyl ester 6.0%~15.0%, reflux solvent 2.0%~8.0% and solvent 2.0%~8.0%；Its preparation process is as follows：A), by weight percentage, vegetable fatty acids, organic acid anhydride, part polyalcohol are added in reactor successively, started Heating, after the complete melting of material in kettle, it is passed through N2, start to stir and be warming up to 120 DEG C, add esterification catalyst, Ran Housheng Temperature adds benzoic acid and reflux solvent, 2~3h of insulation reaction, and remove the water that back flow reaction is brought out to 165 DEG C~180 DEG C Part, and the reflux solvent to cool down is pumped at the top of packed tower with circulation；B), when the water separated is seldom, remaining polyalcohol and C are added10Tertiary carbonic acid glycidyl ester, it is warming up to 190 DEG C of insulations 1h is reacted, then is warming up to 200 DEG C of insulation reaction 1h, is then warming up to 210 DEG C of 1~3h of insulation reaction；C), sample, after the assay was approved, stopping is passed through N2, less than 150 DEG C are cooled to, adds solvent latting drown, stirs 20min, filtering Packaging, obtain the net taste alkyd resin of the high solid；Described hydroxy-containing resin is Hydroxylated acrylic resin, urea formaldehyde, polyester resin, epoxy resin or organic siliconresin；Institute Resin, auxiliary agent, curing agent all aromatic-free class, glycol ether and its esters, ketone, the alkyl chloride varsol stated.
- 2. the net taste type alcohol acid and polyurethane black finish paint of high solid according to claim 1, it is characterised in that described plant Thing fatty acid oil is one or more of combinations in refined soybean oil, castor oil, tall oil, coconut oil.
- 3. the net taste type alcohol acid and polyurethane black finish paint of high solid according to claim 1, it is characterised in that described has Machine acid anhydrides is phthalic anhydride, M-phthalic acid (acid anhydride), terephthalic acid (TPA) (acid anhydride), cis-butenedioic anhydride, maleic anhydride, hexanedioic acid and derivative or the last of the ten Heavenly stems two One or more of combinations in acid and derivative.
- 4. the net taste type alcohol acid and polyurethane black finish paint of high solid according to claim 1, it is characterised in that described ester Change at least one that catalyst is organotin catalysts or rare earth catalyst.
- 5. the net taste type alcohol acid and polyurethane black finish paint of high solid according to claim 1, it is characterised in that described is more First alcohol be glycerine, trimethylolpropane, trimethylolethane, neopentyl glycol, 1,3- propane diols, ethylene glycol, 1,4- butanediols, 1, One or more of combinations in 6- hexylene glycols, diethylene glycol, dipropylene glycol.
- 6. the net taste type alcohol acid and polyurethane black finish paint of high solid according to claim 1, it is characterised in that described returns Stream solvent group turns into：Dimethyl thiacyclohexane 65.0%~80.0%, D40 take off fragrant solvent 20.0%~35.0%.
- 7. the net taste type alcohol acid and polyurethane black finish paint of high solid according to claim 1, it is characterised in that described height Solid point net taste type polyurethane varnish, after its weight solid >=80%, VOC≤200g/L under constructing, application 48h film without Smell.
- 8. the net taste type alcohol acid and polyurethane black finish paint of high solid according to claim 1, it is characterised in that described carbon Black slurry fineness≤10 μm；By weight percentage, consisting of：The net taste alkyd tree of carbon black 8.0%~30.0%, high solid Fat 15.0%~25.0%, mill base dispersant 6.0%~20.0%, defoamer 0.2%~0.5%, thickening anti-settling agent 0.5%~ 3.0%th, remaining is solvent；Its preparation technology is as follows：By formulation weight ratio, solvent and the net taste alkyd resin of high solid and molten are added in dispersion bucket Solution is uniform, adds mill base dispersant, defoamer, stirs, carbon black toner is slowly added to, then in 1000~1200r/min 30~45min of high shear, move on to sand mill circular grinding 3~4 times, until the fineness particle diameter of mill base reaches≤10 μm, The deaeration in paint mixing bucket, add thickening anti-settling agent and adjust and glue, filter and package, obtain the carbon black color slurry.
- 9. the net taste type alcohol acid and polyurethane black finish paint of high solid according to claim 8, it is characterised in that described carbon Black is REGAL400R, Monarch1300, Monarch900, Special black 4, Special black 6, Special Black 550, FW18, FW285, FW200, MA-7, MA-100, MA#40, Raven3500, Raven1255 or Raven3600 It is any.
- 10. the net taste type alcohol acid and polyurethane black finish paint of high solid according to claim 1 or 8, it is characterised in that described Solvent, its form including at least 15.0%~30.0% isoamyl acetate, other compositions be butyl acetate, acetic acid Zhong Ding Ester, propylene glycol monomethyl ether, propandiol butyl ether, at least one of dimethyl carbonate.
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| CN112280461A (en) * | 2020-11-22 | 2021-01-29 | 湖南省金海科技有限公司 | High-hardness high-brightness yellowing-resistant super-black mirror finish paint capable of being used for surface of high-grade sound box in polished mode |
| CN112662285A (en) * | 2020-12-18 | 2021-04-16 | 力同化工(佛山)有限公司 | Nano environment-friendly pure black coating |
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| CN112662285A (en) * | 2020-12-18 | 2021-04-16 | 力同化工(佛山)有限公司 | Nano environment-friendly pure black coating |
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| CN107828331B (en) | 2019-10-18 |
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