CN108774457A - It is a kind of it is low proportioning, low VOC matte varnish and preparation method thereof - Google Patents
It is a kind of it is low proportioning, low VOC matte varnish and preparation method thereof Download PDFInfo
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- CN108774457A CN108774457A CN201810752389.3A CN201810752389A CN108774457A CN 108774457 A CN108774457 A CN 108774457A CN 201810752389 A CN201810752389 A CN 201810752389A CN 108774457 A CN108774457 A CN 108774457A
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- polyurethane coating
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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
-
- 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
-
- 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
Abstract
The invention discloses it is a kind of it is low proportioning, low VOC matte varnish, by polyurethane coating varnish host agent, curing agent, diluent according to construction weight be 100:33:70 compositions；Wherein, polyurethane coating varnish host agent weight percentages of components is：60.0%-70.0% soybean alkyds, 6.5%-9.8% butyl acetates, 2.3%-3.5% propylene glycol methyl ether acetates, 4.4%-7.5% dimethylbenzene, 0.2%-0.5% dispersants, 0.2%-0.5% antifoaming agent, 0.2%-0.5% levelling agents, 1.9%-5.5% dumb light powders, 1.2%-5.5% wax liquors, 5.2%-7.5% nitrocotton liquid.The invention also discloses a kind of low proportioning, the preparation methods of the matte varnish of low VOC.Product of the present invention is used for woodenware top finishing, covers with paint, lacquer, colour wash, etc. mode using spraying, has the characteristics that low proportioning, low VOC, low smell, high pressure resistance, the high grade of transparency, flexibility is strong, richness is good, levelability and good hand touch.
Description
Technical field
The present invention relates to a kind of coating compositions, match more particularly to a kind of one kind for wooden articles external coating is low
Matte varnish and preparation method thereof than, low VOC.
Background technology
Woodwork coating not only has decoration effect, but also has good protective effect to timber, extends it and uses the longevity
Life.The mainly solvent wood coatings that China's indoor furniture uses, are divided into nitro class, alcohol acids, polyurethanes etc., wherein poly-
Urethane class dosage is maximum.Currently, the polyurethane paint for being used for woodenware external coating in the market generally includes two-component, respectively mian paint
And curing agent, mixed according to scheduled proportioning when use, then add suitable diluent, stir evenly can be carried out brushing, construction, behaviour
Make simplicity, cost is more economical with price.But existing polyurethane paint uses high mixture ratio (with host agent equivalent weight or two points
One of), it has the following defects：
1, hardener dose is big, and curing agent is also referred to as curing agent, and main component is TDI (toluene di-isocyanate(TDI)), TDI
It can turn yellow, so that family property lacquer painting is turned yellow, equally also neighbouring metope can be made to turn yellow, this is a big disadvantage of polyurethane paint；2,
VOC content is high, and VOC, that is, volatile organic compounds has tremendous influence to health, when the VOC in room reaches certain dense
When spending, people can feel headache, Nausea and vomiting, weak etc. in the short time, twitch, stupor be will appear when serious, and can hurt
The liver of people, kidney, brain and nervous system cause the serious consequences such as failure of memory.
Invention content
In order to overcome above-mentioned technological deficiency, there is provided a kind of low proportioning, the dumb light of low VOC are clear for the first object of the present invention
Finishing coat, the ingredient using soybean alkyd as polyurethane coating varnish host agent not only reduce the dosage of curing agent, and VOC contains
It measures low, and has the characteristics that high pressure resistance, the high grade of transparency, flexibility are strong, richness is good, levelability and good hand touch.
To solve the above-mentioned problems, the present invention is achieved by following technical scheme：
It is a kind of it is low proportioning, low VOC matte varnish, be made of, apply polyurethane coating varnish host agent, curing agent, diluent
Work weight is：The polyurethane coating varnish host agent：The curing agent：Diluent=100:33:70；
The polyurethane coating varnish host agent weight percentages of components is：
Further, the soybean alkyd weight percentages of components is：
Further, the preparation method of the soybean alkyd is：
1) dispensing：It includes following components in percentage by weight to be equipped with：The oleic acid of 17.0%-23.0%, 2.0%-5.0%
Benzoic acid, the polyacid of 25.0%-32.0%, the polyalcohol of 22.0%-30.0%, 0.05%-2.0% part antioxidant,
The reflux solvent of 3.0%-5.0%, the diluted solvent of 17.0%-23.0%；
2) step 1) is matched to the oleic acid, the benzoic acid, the polyacid, the polyalcohol, the antioxygen got ready
Agent, the reflux solvent are put into reaction kettle, and 150-160 DEG C is warming up in logical nitrogen, and 8-12 DEG C/h is pressed after reflux
Speed be warming up to 205-215 DEG C and keep the temperature it is qualified to acid value, viscosity；
3) step 1) is matched for use in the diluted solvent input thinning vessel got ready；
4) after the temperature of reaction kettle of step 2) is down to 170-180 DEG C, its resulting material is transferred to the institute of step 3)
It states in thinning vessel, the thinning vessel temperature is then risen to 100-120 DEG C, after stirring evenly, then pass through 400-600 mesh filter screen mistakes
Filter is to get to the soybean alkyd.
Further, the polyacid is at least one of phthalic anhydride, maleic anhydride；The polyalcohol
For at least one of pentaerythrite, trimethylolpropane, dihydric alcohol, wherein the dihydric alcohol is ethylene glycol, propylene glycol, two
Glycol or neopentyl glycol.
Further, the antioxidant is hypophosphorous acid antioxidant, phosphite antioxidant, polynary is obstructed in ammonia phenol antioxidant
At least one.
Further, the reflux solvent is dimethylbenzene, and the diluted solvent is butyl acetate.
Further, the dispersant is China's HX4122 dispersants；The antifoaming agent is China's HX2330 antifoaming agent；Institute
It is China's HX3131 levelling agents to state levelling agent；The dumb light powder is one TYS-100 flatting silicas of day；The nitrocotton liquid is Luzhou north
1/4 cotton pulp of side；The wax liquor is Supreme Being's Si Balong 6900-HV polyamide wax pulps.
Further, the curing agent component weight percent is：
In order to overcome above-mentioned technological deficiency, there is provided a kind of low proportioning, the dumb light of low VOC are clear for the second object of the present invention
The preparation method of finishing coat, the simple science of the preparation method, convenient for manufacture.
To solve the above-mentioned problems, the present invention is achieved by following technical scheme：
It is a kind of it is low proportioning, low VOC matte varnish preparation method, include the following steps：
S1, the polyurethane coating varnish host agent is prepared：Each component is weighed by weight percentage, puts into the soya-bean oil alcohol successively
Acid resin, the butyl acetate, the propylene glycol methyl ether acetate, the dimethylbenzene, middling speed is disperseed at 600-800r/min
10-15min puts into the dispersant, the antifoaming agent, the levelling agent, the high speed dispersion at 1200-1500r/min successively
15-20min, then the dumb light powder, the wax liquor, the nitrocotton liquid are put into successively, divide at a high speed at 1200-1500r/min
15-20min is dissipated, the polyurethane coating varnish host agent is obtained；
S2, the curing agent is prepared：Each component is weighed by weight percentage, puts into each component successively, in 400-600r/
Low speed disperses 8-10min under min, obtains the curing agent；
S3, the diluent is prepared：Each component is weighed by weight percentage, puts into each component successively, in 400-600r/
Low speed disperses 8-10min under min, obtains the diluent；
S4, construction weight：The polyurethane coating varnish host agent：The curing agent：Diluent=100:33:
70。
Compared with prior art, the beneficial effects of the invention are as follows：
(1) it is provided by the invention it is a kind of it is low proportioning, low VOC matte varnish, use the technical recipe of high-solid lower-viscosity,
Ingredient using soybean alkyd as polyurethane coating varnish host agent, not only so that polyurethane coating varnish host agent and curing agent
Cross-linking reaction becomes faster, and reduces the additive amount of curing agent, and paint film VOC content is low after construction spraying, have it is low proportioning, it is low
VOC, low smell, high pressure resistance, the high grade of transparency, flexibility are strong, richness is good, levelability and the features such as good hand touch.
(2) it is of the present invention it is low proportioning, low VOC matte varnish, be used for woodenware product surface covering with paint, application side
Formula is using spraying.
(3) it is of the present invention it is low proportioning, low VOC matte varnish preparation method, the simple science of the preparation method,
Convenient for manufacture.
Description of the drawings
Specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings, wherein：
Fig. 1 be it is of the present invention it is low proportioning, low VOC matte varnish preparation method flow chart.
Specific implementation mode
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
The invention discloses a kind of low proportioning, the matte varnish of low VOC, are by polyurethane coating varnish host agent, solidification
Agent, diluent composition, construction weight are：Polyurethane coating varnish host agent：Curing agent：Diluent=100:33:70；It prepares
Flow is as shown in Figure 1.
Polyurethane coating varnish host agent weight percentages of components is：
Various test apparatuses and reagent are commercial goods, are that can buy to obtain by commercial sources；Wherein, dispersant
For China's HX4122 dispersants；Antifoaming agent is China's HX2330 antifoaming agent；Levelling agent is China's HX3131 levelling agents；Dumb light powder is
Its TYS-100 flatting silica；Nitrocotton liquid is northern 1/4 cotton pulp in Luzhou；Wax liquor is Supreme Being's Si Balong 6900-HV polyamide wax pulps.
Embodiment 1
The matte varnish of a kind of low proportioning, low VOC, including polyurethane coating varnish host agent, curing agent, diluent, construction
Weight is：Polyurethane coating varnish host agent：Curing agent：Diluent=100:33:70.
(1) feeding of soybean alkyd is as follows in polyurethane coating varnish host agent：
14.28kg oleic acid, 1.428kg benzoic acid, 19.04kg phthalic anhydrides, 0.952kg maleic anhydrides,
8.976kg pentaerythrites, 1.972kg trimethylolpropanes, 6.46kg propylene glycol, 0.204kg hypophosphorous acid antioxidant, 0.136kg
Phosphite antioxidant, 2.108kg dimethylbenzene, 12.444kg butyl acetates.
Soybean alkyd prepares following steps：
1) dispensing：14.28kg oleic acid, 1.428kg benzoic acid, 19.04kg phthalic anhydrides, 0.952kg maleics two
Acid anhydrides, 8.976kg pentaerythrites, 1.972kg trimethylolpropanes, 6.46kg propylene glycol, 0.204kg hypophosphorous acid antioxidant,
0.136kg phosphite antioxidants, 2.108kg dimethylbenzene, 12.444kg butyl acetates；
2) step 1) is matched to oleic acid, benzoic acid, phthalic anhydride, maleic anhydride, pentaerythrite, three hydroxyls got ready
Methylpropane, propylene glycol, hypophosphorous acid antioxidant, phosphite antioxidant, dimethylbenzene are put into reaction kettle, in logical nitrogen situation
Under be warming up to 155 DEG C, after reflux by the speed of 10 DEG C/h be warming up to 210 DEG C and keep the temperature it is qualified to acid value, viscosity；
3) step 1) is matched for use in the butyl acetate input thinning vessel got ready；
4) after the temperature of reaction kettle of step 2) is down to 175 DEG C, its resulting material is transferred in the thinning vessel of step 3), it will
Thinning vessel is warming up to 110 DEG C, after stirring evenly, then is filtered to get to soybean alkyd by 500 mesh filter screens.
(2) feeding of polyurethane coating varnish host agent is as follows：
68.0kg soybean alkyds, 8.9kg butyl acetates, 3.5kg propylene glycol methyl ether acetates, 6.0kg dimethylbenzene,
0.3kg dispersants, 0.3kg antifoaming agent, 0.3kg levelling agents, 2.7kg dumb light powders, 2.5kg wax liquors, 7.5kg nitrocotton liquid.
Polyurethane coating varnish host agent prepares following steps：
1) dispensing：68.0kg soybean alkyds, 8.9kg butyl acetates, 3.5kg propylene glycol methyl ether acetates, 6.0kg bis-
Toluene, 0.3kg dispersants, 0.3kg antifoaming agent, 0.3kg levelling agents, 2.7kg dumb light powders, 2.5kg wax liquors, 7.5kg nitrocotton liquid；
2) successively input 68.0kg soybean alkyds, 8.9kg butyl acetates, 3.5kg propylene glycol methyl ether acetates,
6.0kg dimethylbenzene, middling speed disperses 15min at 600r/min, puts into 0.3kg dispersants, 0.3kg antifoaming agent, 0.3kg streams successively
Flat agent, the high speed dispersion 20min at 1200r/min, then input 2.7kg dumb light powders, 2.5kg wax liquors, 7.5kg nitrocottons successively
Liquid, the high speed dispersion 20min at 1200r/min, obtains polyurethane coating varnish host agent.
(3) feeding of curing agent is as follows：
21.45kg toluene di-isocyanate(TDI)s (TDI)-trimethylolpropane addition product, 11.55kg butyl acetates.
Curing agent prepares following steps：
1) dispensing：21.45kg toluene di-isocyanate(TDI)s (TDI)-trimethylolpropane addition product, 11.55kg acetic acid fourths
Ester；
2) 21.45kg toluene di-isocyanate(TDI)s (TDI)-trimethylolpropane addition product, 11.55kg acetic acid are put into successively
Butyl ester, low speed disperses 10min at 400r/min, obtains curing agent.
(4) feeding of diluent is as follows：
18.06kg butyl acetates, 14.7kg ethylene acetates, 20.3kg propylene glycol methyl ether acetates, 16.8kg tri-
Toluene, 0.14kg mask agents.
Diluent prepares following steps：
1) dispensing：18.06kg butyl acetates, 14.7kg ethylene acetates, 20.3kg propylene glycol methyl ether acetates,
16.8kg trimethylbenzenes, 0.14kg mask agents；
2) 18.06kg butyl acetates, 14.7kg ethylene acetates, 20.3kg propylene glycol monomethyl ether acetic acid are put into successively
Ester, 16.8kg trimethylbenzenes, 0.14kg mask agents, low speed disperses 10min at 400r/min, obtains curing agent.
According to GB/T 23997-2009《Indoor decorating solvent borne polyurethane woodwork coating》And GB 18581-
2009《Limits of harmful substances in indoor decorating and refurnishing materials solvent wood coatings》Detection, actually detected data such as effect test
Shown in the table 1 of example.
Embodiment 2
The matte varnish of a kind of low proportioning, low VOC, including polyurethane coating varnish host agent, curing agent, diluent, construction
Weight is：Polyurethane coating varnish host agent：Curing agent：Diluent=100:33:70.
(1) feeding of soybean alkyd is as follows in polyurethane coating varnish host agent：
14.49kg oleic acid, 1.449kg benzoic acid, 19.32kg phthalic anhydrides, 0.966kg maleic anhydrides,
9.108kg pentaerythrites, 2.001kg trimethylolpropanes, 6.555kg propylene glycol, 0.207kg hypophosphorous acid antioxidant, 0.138kg
Phosphite antioxidant, 2.139kg dimethylbenzene, 12.627kg butyl acetates.
Soybean alkyd preparation process is the same as embodiment 1.
(2) feeding of polyurethane coating varnish host agent is as follows：
69.0kg soybean alkyds, 9.7kg butyl acetates, 3.5kg propylene glycol methyl ether acetates, 5.0kg dimethylbenzene,
0.3kg dispersants, 0.3kg antifoaming agent, 0.3kg levelling agents, 1.9kg dumb light powders, 2.5kg wax liquors, 7.5kg nitrocotton liquid.
Polyurethane coating varnish host agent prepares following steps：
1) dispensing：69.0kg soybean alkyds, 9.7kg butyl acetates, 3.5kg propylene glycol methyl ether acetates, 5.0kg bis-
Toluene, 0.3kg dispersants, 0.3kg antifoaming agent, 0.3kg levelling agents, 1.9kg dumb light powders, 2.5kg wax liquors, 7.5kg nitrocotton liquid；
2) successively input 69.0kg soybean alkyds, 9.7kg butyl acetates, 3.5kg propylene glycol methyl ether acetates,
5.0kg dimethylbenzene, middling speed disperses 15min at 600r/min, puts into 0.3kg dispersants, 0.3kg antifoaming agent, 0.3kg streams successively
Flat agent, the high speed dispersion 20min at 1200r/min, then input 1.9kg dumb light powders, 2.5kg wax liquors, 7.5kg nitrocottons successively
Liquid, the high speed dispersion 20min at 1200r/min, obtains polyurethane coating varnish host agent.
(3) feeding of curing agent is as follows：
21.45kg toluene di-isocyanate(TDI)s (TDI)-trimethylolpropane addition product, 11.55kg butyl acetates.
Curing agent preparation process is the same as embodiment 1.
(4) feeding of diluent is as follows：
18.06kg butyl acetates, 14.7kg ethylene acetates, 20.3kg propylene glycol methyl ether acetates, 16.8kg tri-
Toluene, 0.14kg mask agents.
Diluent preparation process is the same as embodiment 1.
According to GB/T 23997-2009《Indoor decorating solvent borne polyurethane woodwork coating》And GB 18581-
2009《Limits of harmful substances in indoor decorating and refurnishing materials solvent wood coatings》Detection, actually detected data such as effect test
Shown in the table 1 of example.
Embodiment 3
The matte varnish of a kind of low proportioning, low VOC, including polyurethane coating varnish host agent, curing agent, diluent, construction
Weight is：Polyurethane coating varnish host agent：Curing agent：Diluent=100:33:70.
(1) feeding of soybean alkyd is as follows in polyurethane coating varnish host agent：
14.07kg oleic acid, 1.407kg benzoic acid, 18.76kg phthalic anhydrides, 0.938kg maleic anhydrides,
8.844kg pentaerythrites, 1.943kg trimethylolpropanes, 6.365kg propylene glycol, 0.201kg hypophosphorous acid antioxidant, 0.134kg
Phosphite antioxidant, 2.077kg dimethylbenzene, 12.261kg butyl acetates.
Soybean alkyd preparation process is the same as embodiment 1.
(2) feeding of polyurethane coating varnish host agent is as follows：
67.0kg soybean alkyds, 8.5kg butyl acetates, 3.5kg propylene glycol methyl ether acetates, 7.0kg dimethylbenzene,
0.3kg dispersants, 0.3kg antifoaming agent, 0.3kg levelling agents, 3.1kg dumb light powders, 2.5kg wax liquors, 7.5kg nitrocotton liquid.
Polyurethane coating varnish host agent prepares following steps：
1) dispensing：67.0kg soybean alkyds, 8.5kg butyl acetates, 3.5kg propylene glycol methyl ether acetates, 7.0kg bis-
Toluene, 0.3kg dispersants, 0.3kg antifoaming agent, 0.3kg levelling agents, 3.1kg dumb light powders, 2.5kg wax liquors, 7.5kg nitrocotton liquid；
2) successively input 67.0kg soybean alkyds, 8.5kg butyl acetates, 3.5kg propylene glycol methyl ether acetates,
7.0kg dimethylbenzene, middling speed disperses 15min at 600r/min, puts into 0.3kg dispersants, 0.3kg antifoaming agent, 0.3kg streams successively
Flat agent, the high speed dispersion 20min at 1200r/min, then input 3.1kg dumb light powders, 2.5kg wax liquors, 7.5kg nitrocottons successively
Liquid, the high speed dispersion 20min at 1200r/min, obtains polyurethane coating varnish host agent.
(3) feeding of curing agent is as follows：
21.45kg toluene di-isocyanate(TDI)s (TDI)-trimethylolpropane addition product, 11.55kg butyl acetates.
Curing agent preparation process is the same as embodiment 1.
(4) feeding of diluent is as follows：
18.06kg butyl acetates, 14.7kg ethylene acetates, 20.3kg propylene glycol methyl ether acetates, 16.8kg tri-
Toluene, 0.14kg mask agents.
Diluent preparation process is the same as embodiment 1.
According to GB/T 23997-2009《Indoor decorating solvent borne polyurethane woodwork coating》And GB 18581-
2009《Limits of harmful substances in indoor decorating and refurnishing materials solvent wood coatings》Detection, actually detected data such as effect test
Shown in the table 1 of example.
Effete test embodiment
By the commercial type of matte varnish and comparative example obtained by embodiment 1, embodiment 2, embodiment 3
Common matte varnish is detected.
According to GB/T 23997-2009《Indoor decorating solvent borne polyurethane woodwork coating》And GB 18581-
2009《Limits of harmful substances in indoor decorating and refurnishing materials solvent wood coatings》Detection, actually detected data are as shown in table 1.
1 detection data of table
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, therefore
It is every without departing from technical solution of the present invention content, according to the technical essence of the invention to made by above example it is any modification,
Equivalent variations and modification, in the range of still falling within technical solution of the present invention.
Claims (10)
1. the matte varnish of a kind of low proportioning, low VOC, it is characterised in that：
It is made of polyurethane coating varnish host agent, curing agent, diluent, construction weight is：The polyurethane coating varnish master
Agent：The curing agent：Diluent=100:33:70；
The polyurethane coating varnish host agent weight percentages of components is：
2. the matte varnish of low proportioning according to claim 1, low VOC, it is characterised in that：The soybean alkyd
Weight percentages of components is：
3. the matte varnish of low proportioning according to claim 2, low VOC, it is characterised in that：The soybean alkyd
Preparation method be：
1) dispensing：It includes following components in percentage by weight to be equipped with：The oleic acid of 17.0%-23.0%, the benzene first of 2.0%-5.0%
Part antioxidant, the 3.0%- of acid, the polyacid of 25.0%-32.0%, the polyalcohol of 22.0%-30.0%, 0.05%-2.0%
5.0% reflux solvent, the diluted solvent of 17.0%-23.0%；
2) step 1) is matched into the oleic acid got ready, the benzoic acid, the polyacid, the polyalcohol, the antioxidant, institute
It states reflux solvent to put into reaction kettle, 150-160 DEG C is warming up in logical nitrogen, the speed of 8-12 DEG C/h is pressed after reflux
It is warming up to 205-215 DEG C and keeps the temperature to acid value, viscosity qualification；
3) step 1) is matched for use in the diluted solvent input thinning vessel got ready；
4) after the temperature of reaction kettle of step 2) is down to 170-180 DEG C, its resulting material is transferred to the described of step 3) and is converted
In dilute kettle, the thinning vessel temperature is then risen to 100-120 DEG C, after stirring evenly, then is filtered by 400-600 mesh filter screens,
Obtain the soybean alkyd.
4. the matte varnish of low proportioning according to claim 2, low VOC, it is characterised in that：The polyacid is adjacent benzene
At least one of dicarboxylic acid anhydride, maleic anhydride；The polyalcohol is in pentaerythrite, trimethylolpropane, dihydric alcohol
At least one, wherein the dihydric alcohol be ethylene glycol, propylene glycol, diethylene glycol (DEG) or neopentyl glycol.
5. the matte varnish of low proportioning according to claim 2, low VOC, it is characterised in that：The antioxidant is time phosphorus
Sour antioxidant, phosphite antioxidant, polynary at least one of the ammonia phenol antioxidant that is obstructed.
6. the matte varnish of low proportioning according to claim 2, low VOC, it is characterised in that：The reflux solvent is two
Toluene, the diluted solvent are butyl acetate.
7. the matte varnish of low proportioning according to claim 1, low VOC, it is characterised in that：The dispersant is China
HX4122 dispersants；The antifoaming agent is China's HX2330 antifoaming agent；The levelling agent is China's HX3131 levelling agents；It is described mute
Light powder is one TYS-100 flatting silicas of day；The nitrocotton liquid is northern 1/4 cotton pulp in Luzhou；The wax liquor is Supreme Being Si Balong 6900-
HV polyamide wax pulps.
8. the matte varnish of low proportioning according to claim 1, low VOC, it is characterised in that：The curing agent component weight
Measuring percentage is：
Toluene di-isocyanate(TDI) (TDI)-trimethylolpropane addition product 60.0%-75.0%；
Butyl acetate 25.0%-40.0%.
9. the matte varnish of low proportioning according to claim 1, low VOC, it is characterised in that：The thinner composition weight
Measuring percentage is：
10. it is a kind of according to claim 1~9 any one of them it is low proportioning, low VOC matte varnish preparation method,
It is characterized in that, includes the following steps：
S1, the polyurethane coating varnish host agent is prepared：Each component is weighed by weight percentage, puts into the soya-bean oil alkyd tree successively
Fat, the butyl acetate, the propylene glycol methyl ether acetate, the dimethylbenzene, middling speed disperses 10- at 600-800r/min
15min puts into the dispersant, the antifoaming agent, the levelling agent successively, the high speed dispersion 15- at 1200-1500r/min
20min, then the dumb light powder, the wax liquor, the nitrocotton liquid, the high speed dispersion at 1200-1500r/min are put into successively
15-20min obtains the polyurethane coating varnish host agent；
S2, the curing agent is prepared：Each component is weighed by weight percentage, puts into each component successively, at 400-600r/min
Low speed disperses 8-10min, obtains the curing agent；
S3, the diluent is prepared：Each component is weighed by weight percentage, puts into each component successively, at 400-600r/min
Low speed disperses 8-10min, obtains the diluent；
S4, construction weight：The polyurethane coating varnish host agent：The curing agent：Diluent=100:33:70.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN104130697A (en) * | 2014-07-30 | 2014-11-05 | 广东花王涂料有限公司 | Vertical-face spraying PU matte clean finishing paint with good instant leveling property |
| CN104693429A (en) * | 2015-03-13 | 2015-06-10 | 珠海长先新材料科技股份有限公司 | Short oil alkyd resin and preparation method thereof |
| CN105255356A (en) * | 2015-10-21 | 2016-01-20 | 三棵树涂料股份有限公司 | Low-VOC (volatile organic component) polyurethane matte varnish and preparation method thereof |
| CN106590371A (en) * | 2016-11-24 | 2017-04-26 | 帝斯曼先达合成树脂(佛山)有限公司 | Low-VOC matte alkyd resin and synthesis method thereof |
| CN106995657A (en) * | 2017-05-27 | 2017-08-01 | 广东美涂士建材股份有限公司 | A kind of low smell polyurethane white paint of low amounts curing agent proportioning |
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| CN104130697A (en) * | 2014-07-30 | 2014-11-05 | 广东花王涂料有限公司 | Vertical-face spraying PU matte clean finishing paint with good instant leveling property |
| CN104693429A (en) * | 2015-03-13 | 2015-06-10 | 珠海长先新材料科技股份有限公司 | Short oil alkyd resin and preparation method thereof |
| CN105255356A (en) * | 2015-10-21 | 2016-01-20 | 三棵树涂料股份有限公司 | Low-VOC (volatile organic component) polyurethane matte varnish and preparation method thereof |
| CN106590371A (en) * | 2016-11-24 | 2017-04-26 | 帝斯曼先达合成树脂(佛山)有限公司 | Low-VOC matte alkyd resin and synthesis method thereof |
| CN106995657A (en) * | 2017-05-27 | 2017-08-01 | 广东美涂士建材股份有限公司 | A kind of low smell polyurethane white paint of low amounts curing agent proportioning |
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Application publication date: 20181109 |