CN107674575A - Low VOC polyurethane coatings of two-component and preparation method thereof - Google Patents
Low VOC polyurethane coatings of two-component and preparation method thereof Download PDFInfo
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- CN107674575A CN107674575A CN201711034637.2A CN201711034637A CN107674575A CN 107674575 A CN107674575 A CN 107674575A CN 201711034637 A CN201711034637 A CN 201711034637A CN 107674575 A CN107674575 A CN 107674575A
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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
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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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The present invention relates to a kind of low VOC polyurethane coatings of two-component, including first component, second component and the third component, the weight ratio of the first component, second component and the third component is 1:2‑3:0.5‑1；The first component includes 10 30 parts of diisocyanate prepolymer, 70 90 parts of methyl diphenylene diisocyanate；The second component includes 50 80 parts of short oil alkyd resin, 5 25 parts of organic solvent, 0 0.5 parts of dispersant, 05 parts of flatting silica, 0 1.0 parts of wax powder, 0 15 parts of talcum powder, 0 3.0 parts of anti-settling agent, 0 0.5 parts of levelling agent, 0.1 0.5 parts of defoamer, 0.1 0.3 parts of drier；Third component is 70 90 parts of butyl acetate, propylene glycol methyl ether acetate is 10 30 parts.The present invention uses the raw material of high solid, effectively reduces the usage amount of solvent, and its VOC emission amount is particularly suitable for applying and promoting in wood furniture covers with paint, lacquer, colour wash, etc. application in 400g/L or so.
Description
Technical field
The present invention relates to paint field, more particularly to low VOC polyurethane coatings of two-component and preparation method thereof.
Background technology
Since the 1950s, Bayer A.G synthesized hexamethylene diisocyanate and phenylene diisocyanate, poly- ammonia
Ester (PU) coating is rapidly developed.Because polyurethane coating has excellent hardness, adhesive force, chemicals-resistant, dicoration
And anti-wear performance, it is widely used in wooden furniture paint, automobile coating, anticorrosive paint and sapecial coating.
The coating of furniture application at present, solvent borne polyurethane Coating Market share is 80% or so.What furniture application needed
Working viscosity contains more organic solvent than relatively low in coating, these solvents finally will be all evaporate into air, causes serious
Pollution.With the environmental protection requirement more and more higher of country, having taken up extra taxation, (VOC emission is higher than 420g/L painting
Material), reduce VOC emission amount.
For increasingly strict national environmental protection measure, it is trend of the times to reduce VOC emission.For in terms of coating, at present
Its method has three kinds：First, coating Water-borne modification, still immature, the bottleneck such as its application property, hardness is not yet broken through, so still can not
Substitution oil paint completely.Dimensions of market is less than solvent-borne type woodcare paint 1 percent；Second, UV is coating material solidified, the limit of execution conditions
System, application field has certain limitations, while also has the problem of pollution；Third, the self-growth of solvent borne polyurethane coating, it is led
It is exactly to reduce VOC to want direction.
The content of the invention
Based on this, it is necessary in view of the above-mentioned problems, providing a kind of low VOC polyurethane coatings and preparation method thereof.
A kind of low VOC polyurethane coatings of two-component, including first component, second component and the third component, the first component, second component
Weight ratio with the third component is 1:2-3:0.5-1；
The first component includes diisocyanate prepolymer 10-30 parts, methyl diphenylene diisocyanate 70-90 parts；
The second component includes short oil alkyd resin 50-80 parts, organic solvent 5-25 parts, dispersant 0-0.5, flatting silica 0-
5th, wax powder 0-1.0, talcum powder 0-15, anti-settling agent 0-3.0, levelling agent 0-0.5, defoamer 0.1-0.5, drier 0.1-0.3；
Third component includes butyl acetate 70-90 parts, propylene glycol methyl ether acetate 10-30 parts.
In one of the embodiments, the short oil alkyd resin produces for Carpoly Chemical Group Co., Ltd.,
Model H139-90, its solid content are 90%-94%；Range of viscosities at 25 DEG C is 5000-9000mPa.s；Acid number is 6-
10mgKOH/g。
By the size of the controllable synthetic alkyd resin molecular weight of the adjustment of acid number, ensure suitable rate of drying.This hair
Bright short oil alkyd resin ratio of viscosities is relatively low, can reduce the usage amount of solvent, reduces VOC.
In one of the embodiments, solid content >=95% of the methyl diphenylene diisocyanate.
In one of the embodiments, the methyl diphenylene diisocyanate is methyl diphenylene diisocyanate, two
The mixture of one or both of methylenebis phenyl isocyanate addition product.
In one of the embodiments, the methyl diphenylene diisocyanate is MDI-50F.
In one of the embodiments, the diisocyanate prepolymer is toluene di-isocyanate(TDI) addition product, toluene two
Isocyanate trimer, the addition of adipic acid diisocyanate or one or more mixing of adipic acid diisocyanate trimer
Thing.
In one of the embodiments, the diisocyanate prepolymer is L75.
In one of the embodiments, the organic solvent includes butyl acetate and propylene glycol methyl ether acetate.
In one of the embodiments, described dispersant is the DISPERBYK103 of BYK companies；Described flatting silica is
The ED30 of GRACE companies；Described wax powder is BYK companies wax assistant BYK996；Described anti-settling agent is that DISPARLON companies gather
Amide waxe 630-20；Defoamer selects the BYK-052 or BYK141 of BYK companies；Described drier is De Qian companies
T12。
It is a further object to provide the preparation method of the low VOC polyurethane coatings of above-mentioned two-component, including it is following
Step：
Each raw material is weighed by said ratio；
First component preparation technology：Diisocyanate and methyl diphenylene diisocyanate are fed intake in sealed volume successively
In, 300-500 revs/min of stirring 10-20min, obtain first component coating；
Second component preparation technology：By 300-500 revs/min of short oil alkyd resin, organic solvent, dispersant stirring 5-
15min；Add 800-1000 revs/min of flatting silica, wax powder, talcum powder 800-1000 revs/min of stirring 20-30min；Add anti-
300-500 revs/min of stirring 10-20min in heavy agent, levelling agent, defoamer, drier；
The preparation technology of third component：Butyl acetate and propylene glycol methyl ether acetate are fed intake in sealed volume successively,
300-500 revs/min of stirring 10-20min, obtains the third component coating；
By the first component coating, second component coating and the third component coating by weight 1:2-3:0.5-1 is mixed, and is obtained described
The low VOC polyurethane coatings of two-component.
Compared with existing scheme, the invention has the advantages that：
The low VOC polyurethane coatings of above-mentioned two-component, using specific short oil alkyd resin as first component, with the use of master
The methyl diphenylene diisocyanate that composition is high solids content is wanted to reuse the third composition regulation dope viscosity as second component, obtain
To the VOC emission amount of oiliness polyurethane coating substantially reduce.In first component, specific short oil alkyd resin solid content is high, viscous
Spend that low, rate of drying is fast, second curing components agent NCO content is high, and the form of two-component improves the stability and validity of coating.This
Invention effectively reduces the usage amount of solvent, its VOC emission amount is in 400g/L or so using the raw material of high solid.Pass through
The synergy of drier, ensure the drying property of polyurethane coating, there is the property such as preferable rate of drying, fillibility, hardness
Can, the requirement of wood furniture market application can be met.
The present invention can obtain different types of coating according to different auxiliary agents is added, such as：Transparent priming, sub-light varnish
And gloss varnish.
Embodiment
Low VOC coatings of the present invention and preparation method thereof are described in further detail below in conjunction with specific embodiment.
The raw material sources of the present invention are commercially available.
Short oil alkyd resin H139-90 is purchased from Carpoly Chemical Group Co., Ltd.；
Diisocyanate prepolymer L75 is purchased from Beyer Co., Ltd；
Biphenyl methane diisocyanate prepolymer MDI-50F is purchased from Wan Hua companies；
Dispersant is the DISPERBYK103 of BYK companies；
Flatting silica is the ED30 of GRACE companies；
Wax powder is BYK companies wax assistant BYK996；
Anti-settling agent is DISPARLON companies polyamide wax 630-20；
Defoamer selects the BYK-052 or BYK141 of BYK companies；
Drier is the T12 of De Qian companies.
Embodiment 1
The present embodiment provides a kind of two-component low VOC polyurethane coatings, including first component, second component and the third component；
First component includes：15 parts of diisocyanate prepolymer L75, biphenyl methane diisocyanate prepolymer MDI-50F
85 parts；
Second component includes：68 parts of short oil alkyd resin H139-90,12.1 parts of organic solvent butyl acetate, organic solvent third
10 parts of glycol methyl ether acetate, 8 parts of talcum powder, 1.5 parts of anti-settling agent, 0.3 part of defoamer, 0.1 part of drier.
Third component includes：75 parts of butyl acetate, 25 parts of propylene glycol methyl ether acetate.
Preparation method is as follows：
First component：By diisocyanate prepolymer, biphenyl methane diisocyanate prepolymer feeds intake in closed appearance successively
In product, 300-500 revs/min of stirring 15min, first component coating is obtained；
Second component：By short oil alkyd resin, butyl acetate, 300-500 revs/min of stirring of propylene glycol methyl ether acetate mixing
10min, talcum powder is added, 800-1000 revs/min of stirring 25min, mixing speed is reduced, adds anti-settling agent, defoamer and urge
Dry agent, 500-800 revs/min of stirring 20min, it is desirable to fineness≤45 μm, obtain second component coating.
Third component：Butyl acetate and propylene glycol methyl ether acetate are fed intake in sealed volume successively, 300-500 revs/min
Clock stirs 10-20min, obtains the third component coating；
The coating that first, second, the third component are obtained is by 1:3:1 weight obtains low VOC polyurethane coatings A than mixing.
Embodiment 2
The present embodiment provides a kind of low VOC polyurethane coatings, including first component, second component and the third component；
First component includes：10 parts of diisocyanate prepolymer L75, biphenyl methane diisocyanate prepolymer MDI-50F
90 parts；
Second component includes：60 parts of short oil alkyd resin H139-90,15.4 parts of organic solvent butyl acetate, organic solvent third
7 parts of glycol methyl ether acetate, 0.2 part of dispersant, 15 parts of talcum powder, 2 parts of anti-settling agent, 0.3 part of defoamer, 0.1 part of drier.
Third component includes：75 parts of butyl acetate, 25 parts of propylene glycol methyl ether acetate.
Preparation method is as follows：
First component：By diisocyanate prepolymer, biphenyl methane diisocyanate prepolymer feeds intake in closed appearance successively
In product, 300-500 revs/min of stirring 15min, first component coating is obtained；
Second component：By short oil alkyd resin, butyl acetate, propylene glycol methyl ether acetate, dispersant 300-500 turns/
Minute stirring 10min, talcum powder is added, 800-1000 revs/min of stirring 35min, mixing speed is reduced, addition anti-settling agent, disappears
Infusion and drier, 500-800 revs/min of stirring 20min, it is desirable to fineness≤45 μm, obtain second component coating；
The preparation technology of third component：Butyl acetate and propylene glycol methyl ether acetate are fed intake in sealed volume successively,
300-500 revs/min of stirring 10-20min, obtains the third component coating；
The coating that first, second, the third component are obtained is by 1:3:1 weight obtains low VOC polyurethane coatings B than mixing.
Embodiment 3
The present embodiment provides a kind of low VOC polyurethane coatings, including first component, second component and the third component；
First component includes：10 parts of diisocyanate prepolymer L75, biphenyl methane diisocyanate prepolymer MDI-50F
90 parts；
Second component includes：70 parts of short oil alkyd resin H139-90,12.9 parts of organic solvent butyl acetate, organic solvent third
8 parts of glycol methyl ether acetate, 0.5 part of dispersant, 5 parts of flatting silica, 1 part of wax powder, 1.5 parts of anti-settling agent, 0.2 part of levelling agent, defoaming
0.3 part of agent, 0.1 part of drier.
Third component includes：75 parts of butyl acetate, 25 parts of propylene glycol methyl ether acetate.
Preparation method is as follows：
First component：By diisocyanate prepolymer, biphenyl methane diisocyanate prepolymer feeds intake in closed appearance successively
In product, 300-500 revs/min of stirring 15min, first component coating is obtained；
Second component：By short oil alkyd resin, butyl acetate, propylene glycol methyl ether acetate, dispersant 300-500 turns/
Minute stirring 10min, flatting silica is added, wax powder, 800-1000 revs/min of stirring 35min, reduces mixing speed, addition is anti-settling
Agent, levelling agent, defoamer and drier, 500-800 revs/min of stirring 20min, it is desirable to fineness≤30 μm, obtain second component coating.
The preparation technology of third component：Butyl acetate and propylene glycol methyl ether acetate are fed intake in sealed volume successively,
300-500 revs/min of stirring 10-20min, obtains the third component coating；
The coating that first, second, the third component are obtained is by 1:2:0.8 weight obtains low VOC polyurethane coatings C than mixing.
Embodiment 4
A kind of low VOC polyurethane coatings, including first component, second component and the third component；
First component includes：20 parts of diisocyanate prepolymer L75, biphenyl methane diisocyanate prepolymer MDI-50F
80 parts；
Second component includes：78 parts of short oil alkyd resin H139-90,8.3 parts of organic solvent butyl acetate, organic solvent third
8 parts of glycol methyl ether acetate, 0.2 part of levelling agent, 0.3 part of defoamer, 0.2 part of drier.
Third component includes：75 parts of butyl acetate, 25 parts of propylene glycol methyl ether acetate.
Preparation method is as follows：
First component：By diisocyanate prepolymer, biphenyl methane diisocyanate prepolymer feeds intake in closed appearance successively
In product, 300-500 revs/min of stirring 15min, first component coating is obtained；
Second component：By short oil alkyd resin, butyl acetate, 300-500 revs/min of stirring of propylene glycol methyl ether acetate mixing
10min, add levelling agent, defoamer and drier, 300-500 revs/min of stirring 20min, it is desirable to fineness≤10 μm, obtain second group
Divide coating.
The preparation technology of third component：Butyl acetate and propylene glycol methyl ether acetate are fed intake in sealed volume successively,
300-500 revs/min of stirring 10-20min, obtains the third component coating；
The coating that first, second, the third component are obtained is by 1:2:0.8 weight obtains low VOC polyurethane coatings D than mixing.
Comparative example 1
This comparative example provides a kind of double-component polyurethane coating, and substantially the same manner as Example 1, difference is：Use
SM3170D substitutes the short oil alkyd resin H139-90 in the embodiment of the present invention 1.
The preparation method of this comparative example double-component polyurethane coating is same as Example 1, obtains polyurethane coating E.
Comparative example 2
This comparative example provides a kind of double-component polyurethane coating, and substantially the same manner as Example 1, difference is：In first component
It is not added with biphenyl methane diisocyanate prepolymer.
The preparation method of this comparative example dual-component polyurethane resin is same as Example 1, obtains polyurethane coating F.
Comparative example 3
This comparative example provides a kind of monocomponent polyurethane paint, including
85 parts of 15 parts of diisocyanate prepolymer L75, biphenyl methane diisocyanate prepolymer MDI-50F, short oil
204 parts of alkyd resin H139-90,111.3 parts of organic solvent butyl acetate, 55 parts of organic solvent propylene glycol methyl ether acetate are sliding
24 parts of stone flour, 4.5 parts of anti-settling agent, 0.9 part of defoamer, 0.3 part of drier.
Preparation method is as follows：
By diisocyanate prepolymer, biphenyl methane diisocyanate prepolymer feeds intake in sealed volume successively,
300-500 revs/min of stirring 15min, addition short oil alkyd resin, butyl acetate, propylene glycol methyl ether acetate, 300-500 turns/
Minute stirring 10min, talcum powder is added, 800-1000 revs/min of stirring 25min, mixing speed is reduced, addition anti-settling agent, disappears
Infusion and drier, 500-800 revs/min of stirring 20min, it is desirable to fineness≤45 μm, obtain polyurethane coating G.
Construction technology by embodiment 1-4 and comparative example 1-3 polyurethane coating using spraying, is coated uniformly on identical
On woodenware material, the performance of A-G polyurethane coatings is determined, method of testing is the appendix A that VOC is GB18581, viscosity GB/
T1723, rate of drying (doing solid work) are GB1728, hardness GB/T3739, adhesive force GB/T9286, the test result such as institute of table 1
Show
Table 1
Understand, product of the present invention comply fully with GB18581 indoor decorating and refurnishing materials poisonous and harmful substance limit standards with
And GB/T23997 indoor decorating polyurethane coating standards.1-4 of the embodiment of the present invention reduces obvious, comparative example to VOC
1 is not used short oil alkyd resin of the present invention, and VOC values are 486；Comparative example 2 is not added with methyl diphenylene diisocyanate, VOC values
For 433；Comparative example 3 prepares one-component coating, is reacted rapidly between each material, the holding time is shorter, is 3-4h.Business can not be used as
Product batch is sold.
The low VOC polyurethane coatings of two-component of the present invention, it is particularly suitable for applying and promoting in wood furniture covers with paint, lacquer, colour wash, etc. application.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
- A kind of 1. low VOC polyurethane coatings of two-component, it is characterised in that：Including first component, second component and the third component, the first group Point, the weight ratio of second component and the third component be 1:2-3:0.5-1；The first component includes diisocyanate prepolymer 10-30 parts, biphenyl methane diisocyanate prepolymer 70-90 parts；The second component includes short oil alkyd resin 50-80 parts, organic solvent 5-25 parts, dispersant 0-0.5, flatting silica 0-5, wax Powder 0-1.0, talcum powder 0-15, anti-settling agent 0-3.0, levelling agent 0-0.5, defoamer 0.1-0.5, drier 0.1-0.3；Third component includes butyl acetate 70-90 parts, propylene glycol methyl ether acetate 10-30 parts.
- 2. the low VOC polyurethane coatings of two-component according to claim 1, it is characterised in that the short oil alkyd resin is H139-90, its solid content are 90%-94%；Range of viscosities at 25 DEG C is 5000-9000mPa.s；Acid number is 6-10mgKOH/ g。
- 3. the low VOC polyurethane coatings of two-component according to claim 1 or 2, it is characterised in that the diphenyl methane two Solid content >=95% of isocyanates.
- 4. the low VOC polyurethane coatings of two-component according to claim 3, it is characterised in that the diphenyl methane two is different Cyanate prepolymer is one or both of methyl diphenylene diisocyanate, methyl diphenylene diisocyanate addition product Mixture.
- 5. the low VOC polyurethane coatings of two-component according to claim 3, it is characterised in that the diphenyl methane two is different Cyanate prepolymer is MDI-50F.
- 6. the low VOC polyurethane coatings of two-component according to claim 1 or 2, it is characterised in that the diisocyanate is pre- Polymers is toluene di-isocyanate(TDI) addition product, toluene diisocyanate trimer, the addition of adipic acid diisocyanate or adipic acid One or more mixtures of diisocyanate trimer.
- 7. the low VOC polyurethane coatings of two-component according to claim 6, it is characterised in that the diisocyanate prepolymer Thing is L75.
- 8. the low VOC polyurethane coatings of two-component according to claim 1 or 2, it is characterised in that the organic solvent includes Butyl acetate and propylene glycol methyl ether acetate.
- 9. the low VOC polyurethane coatings of two-component according to claim 1 or 2, it is characterised in that described dispersant is The DISPERBYK103 of BYK companies；Described flatting silica is the ED30 of GRACE companies；Described wax powder is BYK companies wax assistant BYK996；Described anti-settling agent is DISPARLON companies polyamide wax 630-20；The defoamer selects the BYK- of BYK companies 052 or BYK141；Described drier is the T12 of De Qian companies.
- A kind of 10. preparation method of the low VOC polyurethane coatings of two-component described in any one of claim 1-8, it is characterised in that Comprise the following steps：Each raw material is weighed by claim 1 proportioning；First component preparation technology：Diisocyanate prepolymer is fed intake in close successively with biphenyl methane diisocyanate prepolymer Close in volume, 300-500 revs/min of stirring 10-20min, obtain first component coating；Second component preparation technology：By 300-500 revs/min of short oil alkyd resin, organic solvent, dispersant stirring 5- 15min；Add 800-1000 revs/min of flatting silica, wax powder, talcum powder stirring 20-30min；Add anti-settling agent, levelling agent, disappear 300-500 revs/min of infusion, drier stirring 10-20min；The preparation technology of third component：Butyl acetate and propylene glycol methyl ether acetate are fed intake in sealed volume successively, 300-500 Rev/min stirring 10-20min, obtain the third component coating；By the first component coating, second component coating and the third component coating by weight 1:2-3:0.5-1 is mixed, and obtains described double groups The low VOC polyurethane coatings of part.
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| CN201711034637.2A CN107674575A (en) | 2017-10-30 | 2017-10-30 | Low VOC polyurethane coatings of two-component and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112442315A (en) * | 2019-08-27 | 2021-03-05 | 立邦涂料（中国）有限公司 | Solvent type low-construction VOC polyurethane composition for woodware decoration and preparation method thereof |
| CN113429870A (en) * | 2021-08-18 | 2021-09-24 | 何文娟 | Single-component self-drying polyurethane varnish and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102250539A (en) * | 2011-06-10 | 2011-11-23 | 东莞大宝化工制品有限公司 | Double-component low-VOC (Volatile Organic Compounds) oily polyurethane finish paint |
-
2017
- 2017-10-30 CN CN201711034637.2A patent/CN107674575A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102250539A (en) * | 2011-06-10 | 2011-11-23 | 东莞大宝化工制品有限公司 | Double-component low-VOC (Volatile Organic Compounds) oily polyurethane finish paint |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112442315A (en) * | 2019-08-27 | 2021-03-05 | 立邦涂料（中国）有限公司 | Solvent type low-construction VOC polyurethane composition for woodware decoration and preparation method thereof |
| CN113429870A (en) * | 2021-08-18 | 2021-09-24 | 何文娟 | Single-component self-drying polyurethane varnish and preparation method thereof |
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