CN104327719B - Recoated ultra-clear polyurethane matte varnish and preparation and application methods thereof - Google Patents
Recoated ultra-clear polyurethane matte varnish and preparation and application methods thereof Download PDFInfo
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- CN104327719B CN104327719B CN201410666920.7A CN201410666920A CN104327719B CN 104327719 B CN104327719 B CN 104327719B CN 201410666920 A CN201410666920 A CN 201410666920A CN 104327719 B CN104327719 B CN 104327719B
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
- B05D7/26—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials synthetic lacquers or varnishes
-
- 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
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- 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
-
- 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
Abstract
The invention discloses recoated ultra clear polyurethane matte varnish and preparation and application methods thereof. The recoated ultra clear polyurethane matte varnish is prepared from the following components: alkyd resin, a dispersant, an anti-settling agent, wax powder, matting powder, glass dust, CAB liquid, a solvent, a defoaming agent, a drier and a flatting agent. The preparation method comprises the following steps: sequentially adding the alkyd resin, a part of the solvent, the dispersant and the defoaming agent into a stirring kettle and stirring; then, adding the matting powder, the glass dust, the wax powder and the anti-settling agent and stirring; and then adding the flatting agent, the CAB liquid, the drier and the rest of the solvent and stirring. The application method comprises the following steps: uniformly mixing the ultra clear polyurethane matte varnish, a curing agent and a diluent in a ratio of ultra clear polyurethane matte varnish to the curing agent to the diluent being 1: (0.4-0.6): (0.8-1.0); spraying on a substrate; and naturally drying. The varnish used on the substrate is hardly to whiten and is high in clearness.
Description
Technical field
The present invention relates to a kind of recoating surpasses clearly polyurethane matte varnish and its preparation and application.
Background technology
Hotel's suite furniture, the face of the particularly timber product such as office fittingses apply application major part and adopt polyurethane mute at present
Light varnish.After general matte varnish construction easily xanthochromia, turn white, the polyurethane matte varnish below particularly three light splitting is being done over again
Easily turn white during recoating, definition is very poor, thus having a strong impact on product appearance.Must be by spray in order to not affect product appearance
Polyurethane matte varnish thoroughly polishes off, then spray paint again, and wants disposable spray finishing success, such as does over again, then meeting again again
Turn white, be not only delayed the time of delivery, also many consumptions are artificial, increase the production cost of furniture producer.For this reason, one kind can be developed doing over again
Recoatability surpasses clearly polyurethane matte varnish and has very big market prospects.
Content of the invention
For solving above-mentioned technical problem, the invention provides a kind of super clearly polyurethane matte varnish of recoating, recoating are super
The clearly preparation method of polyurethane matte varnish and using method.
The technical scheme solving above-mentioned technical problem is:
A kind of recoating surpasses clearly polyurethane matte varnish, in percentage by weight, is made up of following component:
Alkyd resin 50 ~ 68%
Dispersant 0.5 ~ 4%
Anti-settling agent 0.3 ~ 1%
Wax powder 0.3 ~ 1%
Flatting silica 1 ~ 4%
Glass dust 0 ~ 5%
Cab liquid 5 ~ 30%
Solvent 1 ~ 15%
Defoamer 0.1 ~ 0.5%
Drier 0.05 ~ 0.3%
Levelling agent 0.1 ~ 0.5%.
The method preparing the super clearly polyurethane matte varnish of above-mentioned recoating is:
(1) prepare cab liquid:
Add acetylbutyrylcellulose in butyl acetate, middling speed is dispersed to after being completely dissolved, that is, obtain required cab
Liquid；
(2) alkyd resin, partial solvent, dispersant, defoamer are added sequentially in stirred tank, in 400 ~ 600r/
Under min speed conditions, stir 5 ~ 10 minutes；The percentage by weight that wherein partial solvent accounts for solvent is 46%-98%；
(3) be subsequently adding flatting silica, glass dust, wax powder, anti-settling agent under 800 ~ 1000r/min speed conditions, stirring 20 ~
30 minutes；Add levelling agent, cab liquid, drier, remaining solvent, under 400 ~ 600r/min speed conditions, stirring 15 ~
30 minutes, obtain the super clearly polyurethane matte varnish of recoating.
The using method that above-mentioned recoating surpasses clearly polyurethane matte varnish is:
In joining paint ratio: the super clearly polyurethane matte varnish of recoating: curing agent: diluent=1:0.4 ~ 0.6:0.8 ~ 1.0
After (in terms of parts by weight) stir, it is sprayed on base material, spontaneously dry.
In parts by weight, curing agent is made up of following component:
10 ~ 40 parts of curing agent
2 20 ~ 70 parts of curing agent
20 ~ 30 parts of solvent
Wherein, curing agent 1 is aromatic series isocyanuric acid ester, and its solids content is 75+1%, nco content 12.9 ~ 13.7%；
Curing agent 2 is aromatic series poly-isocyanurate, and solids content is 50+2%, nco content 7.0 ~ 7.4%；Described solvent is dehydration
Butyl acetate.
Further, the alkyd resin of described alkyd resin preferred model uralac 3800 ai-65, solids content is
65+2%, acid value≤18mgkoh/g(solid), oh value is 150 mgkoh/g (100%).
Further, described cab liquid is to be dissolved in 80% butyl acetate by 20% acetylbutyrylcellulose being formulated,
Wherein, acetylbutyrylcellulose preferred model Yi Shiman cab-381-0.5；Above percentage is weight percentage.
Further, described dispersant is the polymer electrolyte block polymers of polyurethane containing multiple parent's pigment groups；Anti-
Heavy agent is polyamide wax pulp；Described wax powder is modified synthesis wax；Described flatting silica is aerosil；Described glass dust is preferred
The imperial gloomy vx-sp of Japan；Described solvent is butyl acetate and cyclohexanone solvent；Described defoamer is brokenly bubble polysiloxane solution；Urge
Dry agent is dibutyl tin laurate；Levelling agent is polyether siloxane copolymer.
The present invention is compared with prior art had the benefit that
1st, the alkyd resin that the present invention adopts and curing agent particularly trimer curing agent have splendid intermiscibility, and three
Aggressiveness curing agent has excellent pliability, coordinates with selected alkyd resin, and trimer curing agent dosage can add much and not
The transparency of impact film and the physical property such as pliability, crack resistence.
2nd, the present invention adopt cab liquid splendid with above alkyd resin and curing agent intermiscibility, can give full play to its
Flatting efficiency in coating and pigment-dispersing, and do not interfere with film yellowing resistance although nitrocotton also can delustring, but its
The yellowing resistance of film can be had a strong impact on.
3rd, due to above 1 and 2 beneficial effect, in this system, the amount of flatting silica can reduce a lot, as long as its dosage
About plus 3%, the gloss of film just can reach below three light splitting.
4th, the present invention adopt flatting silica be the not surface treated silica of one kind, its index of refraction with selected
The index of refraction difference very little of alkyd resin, both index of refraction differences general are less, and its transparency is higher, so as to carry further
The definition of high film.
5th, the dispersant that the present invention adopts is a kind of polymer electrolyte polyurethane blocks copolymerization containing multiple parent's pigment groups
Thing, it has good intermiscibility with selected alkyd resin, when dosage is to 3% in system for it, does not also interfere with film
Transparency, so as to as far as possible many interpolations, simultaneously as containing multiple parent's pigment groups, having very well to flatting silica and glass dust
Wetability, so can make flatting silica and glass dust fully dispersed to initial size, thus reducing flatting silica and glass dust
In the case of addition, delustring and the effect of increase hardness can be reached, the definition of film can be improved again further.
6th, the present invention adopts environmental protection raw material completely, and its physical property is entirely capable of reaching GB gbt 23997-2009 room
The requirement of solvent borne polyurethane woodwork coating of interior trim finishing, environmental-protecting performance reaches GB gb18581-2009 interior decoration dress
Repair the requirement of limits of harmful substances in material solvent type woodcare paint.When gloss is below three light splitting, three films can be recoated not
Can turn white and can clearly see very much the wood grain of ground.
Specific embodiment
With reference to specific embodiment, the present invention will be described in further detail.
In percentage by weight, recoat super clearly polyurethane matte varnish by 50 ~ 68% alkyd resin, 0.5 ~ 4%
Dispersant, 0.3 ~ 1% anti-settling agent, 0.3 ~ 1% wax powder, 1 ~ 4% flatting silica, 0 ~ 5% glass dust, 5 ~ 30% cab
Liquid, 1 ~ 15% solvent, 0.1 ~ 0.5% defoamer, 0.05 ~ 0.3% drier and 0.1 ~ 0.5% levelling agent preparation and
Become.
The alkyd resin of described alkyd resin preferred model uralac 3800 ai-65, solids content is 65+2%, acid
Valency≤18mgkoh/g(solid), oh value is 150 mgkoh/g (100%).
Described cab liquid is to be dissolved in 80% butyl acetate by 20% acetylbutyrylcellulose being formulated, wherein, acetic acid
Cellulose butyrate preferred model Yi Shiman cab-381-0.5；Above percentage is weight percentage.
Described dispersant is the polymer electrolyte block polymers of polyurethane containing multiple parent's pigment groups, preferably model
The polymer electrolyte block polymers of polyurethane containing multiple parent's pigment groups of tech-5041；Anti-settling agent is polyamide wax pulp, excellent
Select the polyamide wax pulp of model 6900-hv；Described wax powder is modified synthesis wax, preferably model Lu Borun 1400sf；Described
Flatting silica is aerosil, the preferably ed-2 of Grace or Degussa ts100；The preferably Japanese imperial gloomy vx- of described glass dust
sp；Described solvent is butyl acetate and cyclohexanone solvent, and wherein, cyclohexanone accounts for 46%-98%(percentage by weight), butyl acetate accounts for
2%-54%(percentage by weight)；Described defoamer is brokenly bubble polysiloxane solution, the poly- silica of brokenly bubble of preferably model byk141
Alkane solution；Drier is dibutyl tin laurate, the preferably dibutyl tin laurate of model t-12；Levelling agent is polyethers
Silicone copolymers, the preferably polyether siloxane copolymer of model tego 450.
In clearly polyurethane matte varnish super using recoating, need to add curing agent and diluent.Wherein, according to weight
Amount number meter, curing agent is prepared from by 1,20 ~ 70 parts of curing agent 2 of 0 ~ 40 part of curing agent and 20 ~ 30 parts of solvents.Described solidification
Agent 1 is aromatic series isocyanuric acid ester, and its solids content is 75+1%, nco content 12.9 ~ 13.7%, preferably tdi addition product, type
Number be l-75；Curing agent 2 is aromatic series poly-isocyanurate, and solids content is 50+2%, nco content 7.0 ~ 7.4%, preferably
Tdi tripolymer, model ac510；Described solvent is dehydration acetate butyl ester.
Embodiment 1.
(1) prepare cab liquid:
Add 20g acetylbutyrylcellulose in 80g butyl acetate, middling speed is dispersed to after being completely dissolved, that is, obtain required
Cab liquid.
(2) 68g alkyd resin, 0.98g cyclohexanone, 0.5g dispersant, 0.1g defoamer are added sequentially in stirred tank,
Under 400 ~ 600r/min speed conditions, stir 5 ~ 10 minutes.
(3) it is subsequently adding 1g flatting silica, 0g glass dust, 0.3g wax powder, 0.3g anti-settling agent in 800 ~ 1000r/min rotating speed bar
Under part, stir 20 ~ 30 minutes；Add 0.1g levelling agent, 28.65g above-mentioned cab liquid, 0.05g drier, 0.02g acetic acid fourth
Ester, under 400 ~ 600r/min speed conditions, stirs 15 ~ 30 minutes, obtains the super clearly polyurethane matte varnish of recoating.
The using method that above-mentioned recoating surpasses clearly polyurethane matte varnish is: in joining paint ratio: recoating is super clearly to gather
Urethane matte varnish: curing agent: diluent=1:0.4:1.0(is in terms of parts by weight) stir after, be sprayed on base material, from
So it is dried.
Embodiment 2.
(1) prepare cab liquid:
Add 20g acetylbutyrylcellulose in 80g butyl acetate, middling speed is dispersed to after being completely dissolved, that is, obtain required
Cab liquid.
(2) 50g alkyd resin, 1.702g cyclohexanone, 4g dispersant, 0.5g defoamer are added sequentially in stirred tank,
Under 400 ~ 600r/min speed conditions, stir 5 ~ 10 minutes.
(3) it is subsequently adding 4g flatting silica, 5g glass dust, 1g wax powder, 1g anti-settling agent in 800 ~ 1000r/min speed conditions
Under, stir 20 ~ 30 minutes；Add 0.5g levelling agent, 30g above-mentioned cab liquid, 0.3g drier, 1.998g butyl acetate,
Under 400 ~ 600r/min speed conditions, stir 15 ~ 30 minutes, obtain the super clearly polyurethane matte varnish of recoating.
The using method that above-mentioned recoating surpasses clearly polyurethane matte varnish is: in joining paint ratio: recoating is super clearly to gather
Urethane matte varnish: curing agent: diluent=1:0.6:0.8(is in terms of parts by weight) stir after, be sprayed on base material, from
So it is dried.
Embodiment 3.
(1) prepare cab liquid:
Add 20g acetylbutyrylcellulose in 80g butyl acetate, middling speed is dispersed to after being completely dissolved, that is, obtain required
Cab liquid.
(2) 67.9g alkyd resin, 9g cyclohexanone, 3g dispersant, 0.3g defoamer are added sequentially in stirred tank,
Under 400 ~ 600r/min speed conditions, stir 5 ~ 10 minutes.
(3) it is subsequently adding 3g flatting silica, 4g glass dust, 0.7g wax powder, 0.8g anti-settling agent in 800 ~ 1000r/min rotating speed bar
Under part, stir 20 ~ 30 minutes；Add 0.2g levelling agent, 5g above-mentioned cab liquid, 0.1g drier, 6g butyl acetate, 400 ~
Under 600r/min speed conditions, stir 15 ~ 30 minutes, obtain the super clearly polyurethane matte varnish of recoating.
The using method that above-mentioned recoating surpasses clearly polyurethane matte varnish is: in joining paint ratio: recoating is super clearly to gather
Urethane matte varnish: curing agent: diluent=1:0.5:0.9(is in terms of parts by weight) stir after, be sprayed on base material, from
So it is dried.
Using technical scheme:
1st, the alkyd resin that the present invention adopts and curing agent particularly trimer curing agent have splendid intermiscibility, and three
Aggressiveness curing agent has excellent pliability, coordinates with selected alkyd resin, and trimer curing agent dosage can add much and not
The transparency of impact film and the physical property such as pliability, crack resistence.
2nd, the present invention adopt cab liquid splendid with above alkyd resin and curing agent intermiscibility, can give full play to its
Flatting efficiency in coating and pigment-dispersing, and do not interfere with film yellowing resistance although nitrocotton also can delustring, but its
The yellowing resistance of film can be had a strong impact on.
3rd, due to above 1 and 2 beneficial effect, in this system, the amount of flatting silica can reduce a lot, as long as its dosage
About plus 3%, the gloss of film just can reach below three light splitting.
4th, the present invention adopt flatting silica be the not surface treated silica of one kind, its index of refraction with selected
The index of refraction difference very little of alkyd resin, both index of refraction differences general are less, and its transparency is higher, so as to carry further
The definition of high film.
5th, the dispersant that the present invention adopts is a kind of polymer electrolyte polyurethane blocks copolymerization containing multiple parent's pigment groups
Thing, it has good intermiscibility with selected alkyd resin, when dosage is to 3% in system for it, does not also interfere with film
Transparency, so as to as far as possible many interpolations, simultaneously as containing multiple parent's pigment groups, having very well to flatting silica and glass dust
Wetability, so can make flatting silica and glass dust fully dispersed to initial size, thus reducing flatting silica and glass dust
In the case of addition, delustring and the effect of increase hardness can be reached, the definition of film can be improved again further.
6th, the present invention adopts environmental protection raw material completely, and its physical property is entirely capable of reaching GB gbt 23997-2009 room
The requirement of solvent borne polyurethane woodwork coating of interior trim finishing, environmental-protecting performance reaches GB gb18581-2009 interior decoration dress
Repair the requirement of limits of harmful substances in material solvent type woodcare paint.When gloss is below three light splitting, three films can be recoated not
Can turn white and can clearly see very much the wood grain of ground.
Claims (7)
1. a kind of super clearly polyurethane matte varnish of recoating it is characterised in that: in percentage by weight, by following component group
Become:
Alkyd resin 50 ~ 68%
Dispersant 0.5 ~ 4%
Anti-settling agent 0.3 ~ 1%
Wax powder 0.3 ~ 1%
Flatting silica 1 ~ 4%
Glass dust 0 ~ 5%
Cab liquid 5 ~ 30%
Solvent 1 ~ 15%
Defoamer 0.1 ~ 0.5%
Drier 0.05 ~ 0.3%
Levelling agent 0.1 ~ 0.5%；
Described cab liquid is to be dissolved in 80% butyl acetate by 20% Yi Shiman acetylbutyrylcellulose being formulated, wherein, vinegar
The model Yi Shiman cab-381-0.5 of sour cellulose butyrate.
2. the super clearly polyurethane matte varnish of recoating according to claim 1 it is characterised in that: described alkyd resin
The alkyd resin of model uralac 3800 ai-65, solids content is 65+2%, acid value≤18mgkoh/g(solid), oh value
For 150 mgkoh/g (100%).
3. the super clearly polyurethane matte varnish of recoating according to claim 1 it is characterised in that: described dispersant be containing
There is the polymer electrolyte block polymers of polyurethane of multiple parent's pigment groups；Anti-settling agent is polyamide wax pulp；Described wax powder is modification
Synthetic wax；Described flatting silica is aerosil；Described glass dust is the imperial gloomy vx-sp of Japan；Described solvent is butyl acetate
And cyclohexanone solvent；Described defoamer is brokenly bubble polysiloxane solution；Drier is dibutyl tin laurate；Levelling agent is poly-
Ether silicone copolymers.
4. a kind of method preparing the super clearly polyurethane matte varnish of recoating as claimed in claim 1 is it is characterised in that include
Following steps:
(1) prepare cab liquid:
Add acetylbutyrylcellulose in butyl acetate, middling speed is dispersed to after being completely dissolved, that is, obtain required cab liquid；
(2) alkyd resin, partial solvent, dispersant, defoamer are added sequentially in stirred tank, turn in 400 ~ 600r/min
Under the conditions of speed, stir 5 ~ 10 minutes；The percentage by weight that wherein partial solvent accounts for solvent is 46%-98%；
(3) it is subsequently adding flatting silica, glass dust, wax powder, anti-settling agent under 800 ~ 1000r/min speed conditions, stir 20 ~ 30 points
Clock；Add levelling agent, cab liquid, drier, remaining solvent, under 400 ~ 600r/min speed conditions, stir 15 ~ 30 points
Clock, obtains the super clearly polyurethane matte varnish of recoating.
5. the super clearly polyurethane matte varnish of recoating according to claim 4 preparation method it is characterised in that: described
The alkyd resin of model uralac 3800 ai-65 of alkyd resin, solids content is 65+2%, acid value≤18mgkoh/g
(solid), oh value is 150 mgkoh/g (100%).
6. the super clearly polyurethane matte varnish of recoating according to claim 4 preparation method it is characterised in that: described
Dispersant is the polymer electrolyte block polymers of polyurethane containing multiple parent's pigment groups；Anti-settling agent is polyamide wax pulp；Described
Wax powder is modified synthesis wax；Described flatting silica is aerosil；Described glass dust is the imperial gloomy vx-sp of Japan；Described solvent
For butyl acetate and cyclohexanone solvent；Described defoamer is brokenly bubble polysiloxane solution；Drier is dibutyl tin laurate；
Levelling agent is polyether siloxane copolymer.
7. a kind of super clearly polyurethane matte varnish of claim 1 recoating using method it is characterised in that: by joining paint ratio
Example: the super clearly polyurethane matte varnish of recoating: curing agent: diluent=1:0.4 ~ 0.6:0.8 ~ 1.0(is in terms of parts by weight) stir
After mixing uniformly, it is sprayed on base material, spontaneously dry；
In parts by weight, curing agent is made up of following component:
10 ~ 40 parts of curing agent
2 20 ~ 70 parts of curing agent
20 ~ 30 parts of solvent
Wherein, curing agent 1 is aromatic series isocyanuric acid ester, and its solids content is 75+1%, nco content 12.9 ~ 13.7%；Solidification
Agent 2 is aromatic series poly-isocyanurate, and solids content is 50+2%, nco content 7.0 ~ 7.4%；Described solvent is dehydration acetate
Butyl ester.
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| CN201410666920.7A CN104327719B (en) | 2014-11-20 | 2014-11-20 | Recoated ultra-clear polyurethane matte varnish and preparation and application methods thereof |
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| CN201410666920.7A CN104327719B (en) | 2014-11-20 | 2014-11-20 | Recoated ultra-clear polyurethane matte varnish and preparation and application methods thereof |
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| US10865330B2 (en) | 2016-07-28 | 2020-12-15 | 3M Innovative Properties Company | Segmented silicone polyamide block copolymers and articles containing the same |
| US10640614B2 (en) | 2016-07-28 | 2020-05-05 | 3M Innovative Properties Company | Segmented silicone polyamide block copolymers and articles containing the same |
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| CN101381581B (en) * | 2008-10-27 | 2011-07-27 | 深圳市广田环保涂料有限公司 | Polyurethane transparent matt topcoat, preparation method and use method thereof |
| CN101967344A (en) * | 2010-10-25 | 2011-02-09 | 江苏冠军涂料科技集团有限公司 | Novel transparent semi-matte polyurethane varnish used for woodenware protection |
| CN102533085B (en) * | 2011-12-16 | 2014-07-23 | 展辰涂料集团股份有限公司 | Two-component polyurethane coating and preparation method thereof |
| CN103788862A (en) * | 2014-01-20 | 2014-05-14 | 澳达树熊涂料(惠州)有限公司 | Two-component matte polyurethane top-coat paint and preparation method thereof |
| CN103980814A (en) * | 2014-05-21 | 2014-08-13 | 三棵树涂料股份有限公司 | Polyurethane matt wearable top-coat paint for removing odor and preparation method thereof |
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2014
- 2014-11-20 CN CN201410666920.7A patent/CN104327719B/en active Active
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