CN106366900A - Stable, high-transparent and permanently-smooth PU lusterless top-coat with gloss and preparation method thereof - Google Patents
Stable, high-transparent and permanently-smooth PU lusterless top-coat with gloss and preparation method thereof Download PDFInfo
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- CN106366900A CN106366900A CN201610736354.1A CN201610736354A CN106366900A CN 106366900 A CN106366900 A CN 106366900A CN 201610736354 A CN201610736354 A CN 201610736354A CN 106366900 A CN106366900 A CN 106366900A
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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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a stable, high-transparent and permanently-smooth PU lusterless top-coat with gloss and a preparation method thereof. The PU lusterless top-coat is prepared from a component A, a component B and a component C, wherein the component A is prepared from short oil alkyd resin, coconut oil alkyd resin, anti-settling pulp, a wetting dispersant, a flatting agent, a defoaming agent, MIBK, Teflon wax powder, ED-30 lusterless powder, nitrocotton liquid with the solid content being 50%, PE flatting wax pulp, acetic ether and n-butyl acetate; the component B is prepared from a 1451 light tripolymer curing agent, a TDI curing agent, an HI-100 solvent-free curing agent, MIBK, MEK and n-butyl acetate; the component C is prepared from methylbenzene, n-butyl acetate, acetic ether, MEK and propylene glycol monomethyl ether acetate. During construction, the components A, B and C are mixed to be uniform proportionally. According to the PU lusterless top-coat, detection and trials prove that after coating, a film is good in leveling property, high in sagging prevention capacity, good in transparence, capable of keeping smooth permanently, uniform in gloss and suitable for coating of costly furniture wood products.
Description
Technical field
The invention belongs to woodwork coating manufacturing industry is and in particular to a kind of have gloss to stablize the forever smooth pu of high transparency mute
Light clear finish, is related to the preparation method of this pu matte varnish simultaneously.
Background technology
In spraying, all coating technology practitioners both know about common pu matte varnish: gloss paint film delustring is main
It is to adopt aerosil, but the self character due to aerosil, and it is subject to construction technology, drying time, environment
The impact of the factors such as humiture, result of prevention is big, particularly when producing the clear finish of low gloss, if aerosil consumption
Greatly, such as then easily poor transparency, lustre lacking uniformity, grows dim at the film defect in paint film；Paint film is suspended in using organosilicon and wax powder
Top layer providing feel, paint film on furniture as time went on, use during constantly rub, paint film is old, and paint film is saturating
Lightness will be deteriorated, and lose original Clear ＆ Transparent degree, and the silk wiping sense of organosilicon and the given film of wax powder will disappear.With height
Shelves furniture is increasingly liked by consumer, and coating specification is also constantly lifted, and common pu dumb light far can not meet clearly top grade
Application demand.
The present invention is the feature using the easy delustring of high molecular short oil alkyd resin, fast drying, spells solid with light trimer
Agent, hdi firming agent, Cortex cocois radiciss oleoresin, make paint film have excellent lifting in rate of drying, ageing-resistant, flexibility, lead to
Cross 1/16 second nitrocotton liquid of addition to improve solvent release, increase the consumption of 1451 light trimer curing agents, paint can be made
Film rapid dryness finalization after spray coating, reduces the impact to gloss of film of the consumption and environment of silicon dioxide；Using pe delustring
The smooth feature that suspends of wax liquor itself, collocation contains on a small quantity the flatting silica of Lasaxing Oilfield, polytetrafluoroethylwax wax, the making of organosilicon auxiliary agent
With, improving the smooth effect that anti-settling, mute powder is evenly distributed, give paint film from surface to nexine simultaneously, will not be because of paint film top layer
Friction and lose smooth effect, and be obtained and there is gloss stablize the forever smooth pu matte varnish product of high transparency.
Content of the invention
The purpose of the present invention is: for above-mentioned the deficiencies in the prior art, providing one kind to have gloss, to stablize high transparency permanent
Smooth pu matte varnish, its have instant good leveling property, transparency is good, gloss is stable, permanent retention is smooth, no sag,
The features such as no grow dim, adapts to need the application demand of top-grade furniture product, the present invention also provides this pu matte varnish simultaneously
Preparation method.
For reaching above-mentioned purpose, the technical solution adopted in the present invention is: one kind has gloss, and to stablize high transparency forever smooth
Pu matte varnish, this pu matte varnish mixes by weight 1:0.5:0.3～0.7 by first component, component B and the third component
Even form；Wherein,
First component by weight percentage by short oil alkyd resin 43%～50%, Cortex cocois radiciss oil alkyd resin 19%～22%,
Anti-settling slurry 0.7%～1%, wetting dispersing agent 0.8%～1.2%, levelling agent 0.2%～0.5%, defoamer 0.3%～
0.5%th, mibk2%～3%, politef wax powder 0.3%～0.5%, ed-30 mute powder 0.2%～1%, 50% solid content
Nitrocotton liquid 7%, pe delustring wax liquor 9%～15%, ethyl acetate 2%～3% and butyl acetate 2.3%～5.5% composition；
Component B by weight percentage by 1451 light trimer curing agents 45%～48%, tdi firming agent 12%～
19.3%th, hi-100 no-solvent type firming agent 5%, mibk 12%, mek 10% and n-butyl acetate 8.7%～13% composition；
Third component is by weight percentage by toluene 40%～45%, n-butyl acetate 20%～25%, ethyl acetate 10%
～15%, mek 10% and propylene glycol methyl ether acetate 5%～20%.
Above-mentioned anti-settling slurry (is spread purchased from Zhuhai by dimethylbenzene 68.5%, high molecular short oil alkyd resin by weight percentage
Than this chemical company) 20%, efcona 5054 dispersant 1.5% and bentone 34 bentonite 10% form.
The nitrocotton liquid of above-mentioned 50% solid content is by weight percentage by n-butyl acetate 50% and 1/16 second nitrocotton
50% composition.
Above-mentioned wetting dispersing agent is modified polyurethane polymeric dispersant.
Above-mentioned levelling agent is silicone levelling agent.
Above-mentioned defoamer is the solution of brokenly bubble polymer and polysiloxanes.
Fineness≤the 25um of above-mentioned first component, viscosity is 1000～1700mpa.s/25 DEG C.
Present invention simultaneously provides above-mentioned have the preparation method that gloss stablizes the forever smooth pu matte varnish of high transparency,
The method step is as follows:
A. first component, component B and the third component are prepared respectively:
Preparation first component: sequentially add short oil alkyd resin, Cortex cocois radiciss oil alkyd resin, anti-settling slurry, moistening in dispersion cylinder
Dispersant, levelling agent, defoamer and mibk, with 600～800 revs/min to stirring, then at 600～800 revs/min
Rotating speed under add politef wax powder and the mute powder of ed-30, with 1200～1500 revs/min of dispersed with stirring 10～15 minutes extremely
Fineness≤25um, then put into the nitrocotton liquid of 50% solid content, pe delustring wax liquor and ethyl acetate successively, with 800～1000 turns/
Minute is to stirring, finally with butyl acetate adjustment viscosity to 1000～1700mpa.s/25 DEG C, standby；
Prepare component B: sequentially add tdi firming agent, hi-100 no-solvent type in 1451 light trimer curing agents admittedly
Agent, mibk, mek and n-butyl acetate, stir evenly, sealing, standby；
Prepare the third component: take toluene, n-butyl acetate, ethyl acetate, mek and propylene glycol methyl ether acetate mixing, stirring
Uniformly, standby；
B. first component, component B and the third component are mixed by weight 1:0.5:0.3～0.7.
Above-mentioned anti-settling slurry is to take dimethylbenzene, high molecular short oil alkyd resin, efcona 5054 dispersant and bentone
34 bentonite mix and form.
The nitrocotton liquid of above-mentioned 50% solid content is under 400～600 revs/min of rotating speed, and 1/16 second nitrocotton is added
Enter in n-butyl acetate, be evenly stirred until fineness≤10um.
Form the first, second of the present invention, the third three components store respectively, be used in and mix in proportion.Third component plays tune
Release construction action.(performance indications can refer to gb/23997-2009 to the pu matte varnish of the present invention, and harmful substance limits after testing
Amount is with reference to gb18581-2009), its property indices see table 1.The pu matte varnish of the present invention, taking three light splitting as a example,
See table 2 with the Performance comparision of three commercially available light splitting matte varnish, it follows that the pu matte varnish gloss of the present invention is steady
Determine, transparency is good, can keep smooth coating, good leveling property, gloss are stable, transparency is good, it is forever smooth to keep, and are top-grade furnitures
The first-selection of spraying.
Each performance indications detection table of the pu matte varnish of table 1 present invention
The three light splitting matte varnish of table 2 present invention and the Performance comparision of three commercially available light splitting matte varnish
After testing and probationary certificate, during its construction, paint film levelling is good, gloss is stable, saturating for the pu matte varnish of the present invention
Lightness is good, coating is forever smooth, no sag, the features such as no grow dim, can meet the requirement to coating performance for the top-grade furniture.
Specific embodiment
Above-mentioned anti-settling slurry be take dimethylbenzene 68.5% by weight percentage, (ratio is spread in Zhuhai to high molecular short oil alkyd resin
This chemical company) 20%, efcona 5054 dispersant 1.5% and bentone 34 bentonite 10% mix and form.
The nitrocotton liquid of above-mentioned 50% solid content is by weight percentage under 400～600 revs/min of rotating speed, by 1/
Nitrocotton 50% adds in n-butyl acetate 50% within 16 seconds, is evenly stirred until fineness≤10um.
Embodiment 1
Preparation first component: sequentially add short oil alkyd resin 43%, Oleum Cocois alkyd in dispersion cylinder by weight percentage
Resin 22%, anti-settling slurry 0.7%, modified polyurethane polymeric dispersant 0.8%, silicone levelling agent 0.2%, defoamer
(solution of brokenly bubble polymer and polysiloxanes) 0.3% and mibk 3%, with 600 revs/min to stirring, then 600
Rev/min rotating speed under add politef wax powder 0.5% and the mute powder of ed-30 0.2%, with 1200 revs/min of dispersed with stirring
To fineness≤25um, then put into the nitrocotton liquid 7% of 50% solid content, pe delustring wax liquor 15% and ethyl acetate successively within 15 minutes
2.5%, with 800 revs/min to stirring, finally use butyl acetate 4.8% adjustment viscosity to 1400mpa.s/25 DEG C, standby
With；
Prepare component B: sequentially add tdi firming agent in 1451 light trimer curing agents 45% by weight percentage
19.3%th, hi-100 no-solvent type firming agent 5%, mibk 12%, mek 10% and n-butyl acetate 8.7%, stir evenly, sealing,
Standby；
Prepare the third component: take toluene 40%, n-butyl acetate 20%, ethyl acetate 10%, mek10% and propylene glycol monomethyl ether
Acetate 20% mixes, and stirs, standby；
First component, component B and the third component are mixed by weight 1:0.5:0.3.
Embodiment 2
Preparation first component: sequentially add short oil alkyd resin 47.9%, Cortex cocois radiciss oleyl alcohol in dispersion cylinder by weight percentage
Acid resin 21%, anti-settling slurry 0.8%, modified polyurethane polymeric dispersant 1.0%, silicone levelling agent 0.4%, defoamer
(solution of brokenly bubble polymer and polysiloxanes) 0.4% and mibk 2.8%, with 700 revs/min to stirring, Ran Hou
Politef wax powder 0.4% and the mute powder of ed-30 0.8% is added, with 1300 revs/min of stirrings point under 700 revs/min of rotating speed
Dissipate 12 minutes to fineness≤25um, then put into the nitrocotton liquid 7% of 50% solid content, pe delustring wax liquor 9% and acetic acid second successively
Ester 3%, with 900 revs/min to stirring, finally uses butyl acetate 5.5% adjustment viscosity to 1700mpa.s/25 DEG C, standby
With；
Prepare component B: sequentially add tdi firming agent in 1451 light trimer curing agents 46% by weight percentage
16%th, hi-100 no-solvent type firming agent 5%, mibk 12%, mek 10% and n-butyl acetate 11%, stir evenly, sealing, standby
With；
Prepare the third component: take toluene 42%, n-butyl acetate 22%, ethyl acetate 12%, mek10% and propylene glycol monomethyl ether
Acetate 14% mixes, and stirs, standby；
First component, component B and the third component are mixed by weight 1:0.5:0.5.
Embodiment 3
Preparation first component: sequentially add short oil alkyd resin 50%, Oleum Cocois alkyd in dispersion cylinder by weight percentage
Resin 19%, anti-settling slurry 1%, modified polyurethane polymeric dispersant 1.2%, silicone levelling agent 0.5%, defoamer are (broken
Bubble polymer and polysiloxanes solution) 0.5% and mibk 2%, with 800 revs/min to stirring, then 800 turns/
Minute rotating speed under add politef wax powder 0.3% and the mute powder of ed-30 1%, with 1500 revs/min of dispersed with stirring 10 minutes
To fineness≤25um, then put into the nitrocotton liquid 7% of 50% solid content, pe delustring wax liquor 13.2% and ethyl acetate 2% successively,
With 1000 revs/min to stirring, finally use butyl acetate 2.3% adjustment viscosity to 1000mpa.s/25 DEG C, standby；
Prepare component B: sequentially add tdi firming agent in 1451 light trimer curing agents 48% by weight percentage
12%th, hi-100 no-solvent type firming agent 5%, mibk 12%, mek 10% and n-butyl acetate 13%, stir evenly, sealing, standby
With；
Prepare the third component: take toluene 45%, n-butyl acetate 25%, ethyl acetate 15%, mek10% and propylene glycol monomethyl ether
Acetate 5% mixes, and stirs, standby；
First component, component B and the third component are mixed by weight 1:0.5:0.7.
Claims (10)
1. a kind of have gloss and stablize the forever smooth pu matte varnish of high transparency it is characterised in that this pu matte varnish
Mixed by weight 1:0.5:0.3～0.7 by first component, component B and the third component and form；
Wherein, first component by weight percentage by short oil alkyd resin 43%～50%, Cortex cocois radiciss oil alkyd resin 19%～22%,
Anti-settling slurry 0.7%～1%, wetting dispersing agent 0.8%～1.2%, levelling agent 0.2%～0.5%, defoamer 0.3%～
0.5%th, mibk2%～3%, politef wax powder 0.3%～0.5%, ed-30 mute powder 0.2%～1%, 50% solid content
Nitrocotton liquid 7%, pe delustring wax liquor 9%～15%, ethyl acetate 2%～3% and butyl acetate 2.3%～5.5% composition；
Component B by weight percentage by 1451 light trimer curing agents 45%～48%, tdi firming agent 12%～19.3%,
Hi-100 no-solvent type firming agent 5%, mibk 12%, mek 10% and n-butyl acetate 8.7%～13% composition；
Third component by weight percentage by toluene 40%～45%, n-butyl acetate 20%～25%, ethyl acetate 10%～
15%th, mek 10% and propylene glycol methyl ether acetate 5%～20%.
2. a kind of as claimed in claim 1 have gloss and stablize the forever smooth pu matte varnish of high transparency, and its feature exists
In described anti-settling slurry is by weight percentage by dimethylbenzene 68.5%, high molecular short oil alkyd resin 20%, efcona 5054
Dispersant 1.5% and bentone 34 bentonite 10% form.
3. a kind of as claimed in claim 1 have gloss and stablize the forever smooth pu matte varnish of high transparency, and its feature exists
In, described 50% solid content nitrocotton liquid by weight percentage by n-butyl acetate 50% and 50% group of 1/16 second nitrocotton
Become.
4. a kind of as claimed in claim 1 have gloss and stablize the forever smooth pu matte varnish of high transparency, and its feature exists
In described wetting dispersing agent is modified polyurethane polymeric dispersant.
5. a kind of as claimed in claim 1 have gloss and stablize the forever smooth pu matte varnish of high transparency, and its feature exists
In described levelling agent is silicone levelling agent.
6. a kind of as claimed in claim 1 have gloss and stablize the forever smooth pu matte varnish of high transparency, and its feature exists
In described defoamer is the solution of brokenly bubble polymer and polysiloxanes.
7. a kind of as claimed in claim 1 have gloss and stablize the forever smooth pu matte varnish of high transparency, and its feature exists
In, the fineness≤25um of described first component, viscosity is 1000～1700mpa.s/25 DEG C.
8. a kind of any one of preparation claim 1-7 has gloss and stablizes the forever smooth clear face of pu dumb light of high transparency
The method of paint is it is characterised in that the method step is as follows:
A. first component, component B and the third component are prepared respectively:
Preparation first component: sequentially add short oil alkyd resin, Cortex cocois radiciss oil alkyd resin, anti-settling slurry, wetting and dispersing in dispersion cylinder
Agent, levelling agent, defoamer and mibk, with 600～800 revs/min to stirring, then 600～800 revs/min turn
Speed is lower to add politef wax powder and the mute powder of ed-30, with 1200～1500 revs/min of dispersed with stirring 10～15 minutes to fineness
≤ 25um, then put into the nitrocotton liquid of 50% solid content, pe delustring wax liquor and ethyl acetate successively, with 800～1000 revs/min
To stirring, finally with butyl acetate adjustment viscosity to 1000～1700mpa.s/25 DEG C, standby；
Prepare component B: sequentially add tdi firming agent, the solidification of hi-100 no-solvent type in 1451 light trimer curing agents
Agent, mibk, mek and n-butyl acetate, stir evenly, sealing, standby；
Prepare the third component: take toluene, n-butyl acetate, ethyl acetate, mek and propylene glycol methyl ether acetate mixing, stir,
Standby；
B. first component, component B and the third component are mixed by weight 1:0.5:0.3～0.7.
9. preparation method as claimed in claim 8 is it is characterised in that described anti-settling slurry is to take dimethylbenzene, high molecular short oil
Alkyd resin, efcona 5054 dispersant and bentone 34 bentonite mix and form.
10. preparation method as claimed in claim 8 it is characterised in that the nitrocotton liquid of described 50% solid content be 400～
Under 600 revs/min of rotating speed, 1/16 second nitrocotton is added in n-butyl acetate, is evenly stirred until fineness≤10um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736354.1A CN106366900A (en) | 2016-08-26 | 2016-08-26 | Stable, high-transparent and permanently-smooth PU lusterless top-coat with gloss and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736354.1A CN106366900A (en) | 2016-08-26 | 2016-08-26 | Stable, high-transparent and permanently-smooth PU lusterless top-coat with gloss and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106366900A true CN106366900A (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610736354.1A Pending CN106366900A (en) | 2016-08-26 | 2016-08-26 | Stable, high-transparent and permanently-smooth PU lusterless top-coat with gloss and preparation method thereof |
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Cited By (7)
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| CN111500168A (en) * | 2020-05-18 | 2020-08-07 | 上海大宝化工制品有限公司 | Paint for melamine laminated cabinet and coating method thereof |
| CN111961394A (en) * | 2020-07-21 | 2020-11-20 | 广东立邦长润发科技材料有限公司 | PU white primer facilitating low-temperature quick drying and free of miliaria |
| CN111978833A (en) * | 2020-07-29 | 2020-11-24 | 广东巴德士化工有限公司 | High-transparency high-recoating matte clear finish paint |
| CN112724811A (en) * | 2020-12-28 | 2021-04-30 | 东莞大宝化工制品有限公司 | Solvent type polyurethane finish paint with skin touch feeling and preparation method thereof |
| CN114316778A (en) * | 2021-12-10 | 2022-04-12 | 广东斯立卡新材料有限公司 | Special matte odorless PU white finish with permanent skin feeling and preparation method thereof |
| CN115558389A (en) * | 2022-02-25 | 2023-01-03 | 上海欧畅新材料科技有限公司 | Polyurethane-acrylate hand feeling coating and preparation method and use method thereof |
| CN115772360A (en) * | 2022-11-30 | 2023-03-10 | 沈阳盛达惠发化工有限公司 | High-solid odor-free matte finish paint and preparation and application methods thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111500168A (en) * | 2020-05-18 | 2020-08-07 | 上海大宝化工制品有限公司 | Paint for melamine laminated cabinet and coating method thereof |
| CN111500168B (en) * | 2020-05-18 | 2021-08-06 | 上海大宝化工制品有限公司 | Paint for melamine laminated cabinet and coating method thereof |
| CN111961394A (en) * | 2020-07-21 | 2020-11-20 | 广东立邦长润发科技材料有限公司 | PU white primer facilitating low-temperature quick drying and free of miliaria |
| CN111978833A (en) * | 2020-07-29 | 2020-11-24 | 广东巴德士化工有限公司 | High-transparency high-recoating matte clear finish paint |
| CN112724811A (en) * | 2020-12-28 | 2021-04-30 | 东莞大宝化工制品有限公司 | Solvent type polyurethane finish paint with skin touch feeling and preparation method thereof |
| CN114316778A (en) * | 2021-12-10 | 2022-04-12 | 广东斯立卡新材料有限公司 | Special matte odorless PU white finish with permanent skin feeling and preparation method thereof |
| CN115558389A (en) * | 2022-02-25 | 2023-01-03 | 上海欧畅新材料科技有限公司 | Polyurethane-acrylate hand feeling coating and preparation method and use method thereof |
| CN115558389B (en) * | 2022-02-25 | 2024-01-12 | 上海欧畅新材料科技有限公司 | Polyurethane-acrylate hand feeling coating and preparation method and application method thereof |
| CN115772360A (en) * | 2022-11-30 | 2023-03-10 | 沈阳盛达惠发化工有限公司 | High-solid odor-free matte finish paint and preparation and application methods thereof |
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Application publication date: 20170201 |