CN109721754A - A kind of environment-friendly water-based oil resistant glue and the method using the hydrophobic high stretching PVC film of its preparation oil resistant - Google Patents
A kind of environment-friendly water-based oil resistant glue and the method using the hydrophobic high stretching PVC film of its preparation oil resistant Download PDFInfo
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- CN109721754A CN109721754A CN201811630846.8A CN201811630846A CN109721754A CN 109721754 A CN109721754 A CN 109721754A CN 201811630846 A CN201811630846 A CN 201811630846A CN 109721754 A CN109721754 A CN 109721754A
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Abstract
The invention discloses a kind of environment-friendly water-based oil resistant glue, according to parts by weight, the oil resistance agent containing 45~80 parts of water-base resins, 6~15 parts.Oil resistant glue of the invention takes water as a solvent, and volatile organic substance (VOC) is zero, has the characteristics that environment-protecting and non-poisonous.The invention also discloses utilize the hydrophobic high method for stretching PVC film of environment-friendly water-based oil resistant glue preparation oil resistant.PVC film prepared by the present invention has excellent oil resistant, hydrophobic effect, and tensile strength with higher, can also have the function of antistatic and selfreparing, surface can do mirror surface or atomized surface effect.
Description
Technical field
The present invention relates to the preparation method technical fields of pvc film coating and pvc film, and in particular to a kind of environment-protective water
Property oil resistant glue and application its prepare the hydrophobic high method for stretching pvc film of oil resistant.
Background technique
In recent years, in furniture building material industry, for improve furniture, building material surface decorative effect, and to its surface carry out
Protection, has gradually risen and has pasted the way of various membrane materials in furniture, building material surface.In numerous membrane materials, PVC material film is the most general
Time.
Major part on the market is solvent type coating at present, the activity dilution being added in traditional solvent type coating method
Agent usually has certain skin irritation and volatility, will cause harm to construction personnel and user and environment.With people
The limitation of raising and various countries to volatile organic compounds (VOC) content to environmental consciousness, exploitation low pollution environment-friendly type
Water-base resin product has become everybody common recognition.
Although but some water-base resins environmental protection prepared at present, its water resistance, chemical resistance and thermal stability compared with
Difference, leading to the finished product comprehensive performance being made into, ideal requirement is not achieved, needs to conduct further research.
Summary of the invention
For deficiency among the above, the object of the present invention is to provide a kind of environment-protecting and non-poisonous, wear-resisting, oil resistant and with higher
Water resistance, chemical resistance, thermal stability and tensile strength environment-friendly water-based oil resistant glue, it is to achieve the above object, of the invention
Technical solution is:
A kind of environment-friendly water-based oil resistant glue, according to parts by weight, the oil resistant containing 45~80 parts of water-base resins, 6~15 parts
Agent.
The water-base resin is aqueous acrylic resin or waterborne polyurethane resin.
The aqueous acrylic resin is acrylic resin emulsion, acrylic resin aqueous dispersion or acrylic compounds
Resin aqueous solution.
The waterborne polyurethane resin is the netted aqueous grafted polyurethane resin of macromolecule, and the macromolecule is netted aqueous to be connect
Branch polyurethane resin is the water-soluble polyurethane acrylic resin prepared by grafting method, aqueous polyurethane epoxy resin, aqueous
One of polyurethane polyester resin, organosilicon modified aqueous polyurethane resin are a variety of.
Further, the water-soluble polyurethane acrylic resin the preparation method comprises the following steps: by polyaminoester emulsion and acrylate
Emulsion blending, additional crosslink agent form urethane acrylate composite lotion, or first synthesis of polyurethane polymer emulsion,
It polymerize again with acrylic acid ester emulsion using the polyether polyols lotion as seed cream, by above two method, so that two kinds
Lotion is interpenetrated with molecular dimension, graft reaction is then carried out, the urethane acrylate cream of macromolecule internet is formed
Liquid.
The aqueous polyurethane epoxy resin, preparation method are as follows: pass through grafting for epoxy resin as hydroxy compounds
The mode of copolymerization is reacted with polyaminoester emulsion introduces polyurethane backbone for branch point, forms partial mesh topology, makes performance more
It is excellent.
The aqueous polyurethane polyester resin is to polymerize aqueous polyurethane emulsion and polyester graft, forms reticular structure
Aqueous polyurethane polyester resin.
The organosilicon modified aqueous polyurethane resin is grafted to silicon on waterborne polyurethane resin molecule, is formed netted
Structure.
The oil resistance agent is fluorine-containing or silicon-containing organic compound, and described fluorine-containing or silicon-containing organic compound is fluorination liquid, complete
Fluorine organic compound, fluorine silicon resin, silane compound, polysilazane, Nano particles of silicon dioxide, in dimethyl silicone polymer
It is in any or a variety of.
The perfluoro organic compound is perfluoro decyl trichlorosilane or 17 fluorine ruthenium trimethoxysilanes, the silane
Compound is disilane, polydimethylsiloxane or methyl trichlorosilane.
Further, the environment-friendly water-based oil resistant glue according to parts by weight, contains 45~80 parts of water-base resins, 6~15 parts
Oil resistance agent, 0.5~2 part of levelling agent, 2~13 parts of light initiators.
Further, the environment-friendly water-based oil resistant glue according to parts by weight, contains 45~80 parts of water-base resins, 6~15 parts
Oil resistance agent, 0.5~2 part of levelling agent, 4~30 parts of curing agent.
The environment-friendly water-based oil resistant glue can also containing 1~15 part of catalyst or 5~30 antistatic agents or with 50~70 parts
In self-repair resin or 1~20 part of AG powder or 1~20 part of villus powder or above-mentioned several mixtures,.
The levelling agent is organosilicon, acrylic ester compound is any one or more of.
The smooth initiator be any one of acylphosphine oxide, alpha-alcohol ketone derivative, alpha-amino ketone derivative or
It is a variety of.
The catalyst, which can add, to be also not added, and catalyst is added mainly to be to speed up the cured time, to save the time of baking,
The amount to be added can be selected according to the actual situation or is not added.
The antistatic agent is one or more in conductive polymer subtype and conducting ionic and conducting non-ionic type.
The curing agent is that amine curing agent, acid anhydride type curing agent, latent curing agent are any one or more of.
The self-repair resin be fluorinated polyurethane memory elasticity body, nanoparticle self repairing agent, microcapsules self repairing agent,
Epoxy resin self repairing agent, it is one or more in carbon nanotube self repairing agent.
The AG powder is PMMA (polymethyl methacrylate), polyester, organosilicon, polypropylene are any one or more of.
In the present invention, when containing AG powder in oil resistant glue formula, then the surface of the PVC film product finally prepared is atomized surface effect, and
And the mist degree height on surface can be controlled by selecting the AG powder of different-grain diameter, AG powder diameter is 0.5 μm~20 μm, then mist degree can
Reach 3%~90%.When not containing AG powder in oil resistant glue formula, then the surface of the PVC film product finally prepared is mirror surface
Effect.
Further the environment-friendly water-based oil resistant glue can be made into one-component and two-component, if synthesis water-base resin viscosity compared with
Gao Shi can substitute solvent with water to reach the low flowable liquids of viscosity, can be suitble to the dry coating answered a pager's call.Two-component exists
Two components are homogenously mixed together when use, macromolecular is formed by mutual reaction and reaches crosslinking curing, this viscosity
It can be used compared under low normal temp, for two groups of mixing, this mesh can be reached using metering pump with coating system setups are automatically supplied
's.
The invention also discloses a kind of using the above-mentioned environment-friendly water-based hydrophobic high side for stretching PVC film of factice preparation oil resistant
Method, steps are as follows:
(1), PVC film is taken；
(2), the oil resistant glue is pressed；
(3), it is coated in the PVC film of step (1) using the aqueous oil resistant glue that coating machine prepares step (2), in PVC
Film surface forms one layer of oil resistant gel coating；
(4), the PVC film for being coated with oil resistant gel coating carries out ultraviolet light solidification or the oven oil resistant obtained by drying is dredged
Water height stretches PVC film finished product；
Because PVC material is thermo-labile, too high-temperature can be such that PVC film deforms, and therefore, can carry out to above-mentioned preparation method excellent
Change, the PVC film finished product made is put into curing chamber, is placed 30-80 hours in the case where temperature is 50-70 degree, can make to produce
The comprehensive performance of product improves 60% or more, to obtain the PVC film with more preferable stability.
The invention also discloses another using the above-mentioned environment-friendly water-based hydrophobic high stretching PVC film of factice preparation oil resistant
Method, the i.e. method of two-component oil resistant glue film, steps are as follows:
(1), PVC film is taken；
(2), each raw material is taken by the raw material proportioning, after being mixed, the oil resistant glue A group and oil resistant glue B group is respectively prepared；
(3), the oil resistant glue A group and oil resistant glue B group prepared step (2) using coating machine is coated in step (1) simultaneously
In PVC film, oil resistant gel coating is formed on PVC film surface；
(4), the PVC film for being coated with oil resistant gel coating is sent into the hydrophobic high stretching PVC of the oven oil resistant obtained by drying
Film product.
Because PVC material is thermo-labile, too high-temperature can be such that PVC film deforms, therefore, therefore, can to above-mentioned preparation method into
Row optimization, need to put curing chamber for the finished product made, and place 30-80 hours in the case where temperature is 50-70 degree, after optimization,
The comprehensive performance of product can be made to improve 60% or more, to obtain the PVC film with more preferable stability.
The utility model has the advantages that
Environment-friendly water-based oil resistant glue of the invention takes water as a solvent, and volatile organic substance (VOC) is zero, has environmentally friendly nothing
The feature of poison.
The oleophobic angle of PVC film of the invention is 70 °~80 °, and hydrophobic angle is 110 °~115 °, anti-oil stains, hydrophobic effect
Fruit is good.PVC film of the invention is especially on kitchen cabinet in furniture, kitchen grease stain is not easy to be attached to above, can persistently protect
Closet surface cleaning is held, it is clean even if there is a small amount of grease stain attachment that can also gently wipe.
PVC film blister performance of the invention is good, through experimental test, in the die surface plastic uptake that depth is 8cm at 120 DEG C
When no cracking, tensile strength is high.
PVC film hardness of the invention is high, and durable, hardness has 2H not easy to scratch.
The present invention especially with the netted aqueous grafted polyurethane resin of macromolecule using water-base resin with it due to being made
Standby environment-friendly water-based oil resistant glue water resistance, chemical resistance, anti-flammability and ageing-resistant performance with higher and thermal stability,
Then there is preferable water resistance, anti-flammability and ageing-resistant performance and thermal stability using PVC film prepared by the aqueous oil resistant glue
Can, extend the service life of PVC film.
PVC film of the invention can be made into anti-static function, can eliminate the electrostatic of PVC film, eliminate PVC film dust suction and ask
Topic, the substance for preventing electrostatic from accumulating.PVC film of the invention can also be made into self-repair function, when coating is worn, when scuffing
By rebounding, principle heals automatically.
PVC film of the invention can be made into mirror effect, and facilitating subsequent has color or with wood grain class, natural big with various
The PVC material of the various patterns such as fibrous gypsum or other stone lines is bonded.Due to different colours and the huge number of pattern, so
Can make PVC material not only can show the color of nature, can also show the color in people's illusion.Of the invention
PVC film can do mist degree on its surface, and the mist degree on surface is adjustable, has mainly for some furniture, such as parlor or bedroom
The place of lamp source irradiation, usual light source dazzling can allow people to feel under the weather, can be light with the processed PVC film of Surface haze
Source, which is spread apart, to be come, and plays the role of protecting eyesight.Diversified appearance can be presented in PVC film of the invention, play good dress
Effect is adornd, different consumer demands are met.The present invention saves resource and the energy using safe, reduces environmental pollution and public hazards
The advantages that.
The thickness of oil resistant gel coating can be by adjusting the mesh number (optional 50~300 mesh) of anilox roll or line roller, coating machine
The parameters such as roller gap, coating speed, the flow of oil resistant glue, coating width are adjusted.
Coating machine can be selected slit type coater, extrusion coating machine, dimple coating machine, reverse kiss formula coating machine, etc., can root
It is selected according to the thickness of oil resistant glue floating coat.
Specific embodiment
Embodiment 1:
A kind of environment-friendly water-based oil resistant glue, according to parts by weight, at being grouped as are as follows: 50 parts of watersoluble polyurethane acrylic acid trees
Rouge, 8 parts of fluorination liquid, 9 parts of amine curing agents, 2 parts of organosilicon levelling agents, 3 parts of catalyst
Using the hydrophobic high method for stretching PVC film of oil resistant glue preparation oil resistant, steps are as follows:
(1), PVC film is taken, optional 50 μm, 70 μm or 100 μm of thickness, selects this thickness that can facilitate the heat of subsequent PVC film
Conjunction is overlayed, ornament materials is made into；
(2), each raw material is taken by each raw material proportioning of the present embodiment, after being mixed, oil resistant glue is made；
(3), oil resistant glue prepared by step (2) is added in the hopper of coating machine, anilox roll or line roller is selected in hopper
Deng, by the oil resistant glue be coated in step (1) PVC film on, PVC film surface formed one layer of oil resistant gel coating；
(4), be coated with oil resistant glue PVC film be delivered to oven tunnel dried (oven temperature be 65 DEG C~90
DEG C) up to the hydrophobic high stretching PVC film finished product of the oil resistant, gained PVC film finished surface is mirror effect；
(5) film product is put into curing chamber, temperature is placed 60 hours in the case where being 50 degree, can make the comprehensive performance of product
60% or more is improved, to obtain the PVC film with more preferable stability.
The applicating example of the PVC film finished product of the present embodiment is as follows: being all with three patch machine hot pressing fittings, example on the market now
Such as: doing 400 μm of material, the above is 50 μm of mirror surface PVC, and centre is grained 25 μm of the PVC of printing, and bottom is
325 μm of ground is once bonded with three patch machines and is made into ornament materials, because surface, which is easy to scratch, once to be pasted with three patch machines
It closes.Now with oil resistant of the invention it is hydrophobic it is high stretch PVC film, two patches can, first in coating thermosetting oil resistant of the invention
The patterns such as the PVC back up wood grain of glue, then be bonded with ground, which offers a saving intermediate one layer of material costs.
Embodiment 2:
A kind of environment-friendly water-based oil resistant glue, according to parts by weight, consisting of: 60 parts of aqueous grafted polyester polyurethane resins,
10 parts of polysilazanes, 3 parts of light initiator acylphosphine oxides.
Using the hydrophobic high method for stretching PVC film of oil resistant glue preparation oil resistant, steps are as follows:
(1), PVC film is taken, optional 50 μm, 70 μm or 100 μm of thickness；
(2), each raw material is taken by each raw material proportioning of the present embodiment, after being mixed, oil resistant glue is made；
(3), PVC film entire volume is loaded into coating machine, pulls open coating machine material head and behaviour is destaticed to PVC film progress binding dust
Make；Oil resistant glue is coated in PVC film and carries out ultraviolet light solidification again, obtains the hydrophobic high stretching PVC film finished product of oil resistant, finished product
Surface is mirror effect.
Embodiment 3:
A kind of environment-friendly water-based oil resistant glue, according to parts by weight, consisting of: 50 parts of aqueous polyurethane epoxy resin, 6 parts it is complete
Fluorine decyltrichlorosilane, 1 part of organosilicon levelling agent, 10 parts of amine curing agents, 12 parts of antistatic agents.
Using the hydrophobic high method for stretching PVC film of oil resistant glue preparation oil resistant, steps are as follows:
(1), PVC film is taken, optional 50 μm, 70 μm or 100 μm of thickness；
(2), each raw material is taken by each raw material proportioning of the present embodiment, after being mixed, oil resistant glue A group and B group is made；
(3), PVC film entire volume is loaded into coating machine, oil resistant glue A group and B component made from step (2) is not added to certainly
Dynamic supply coating system, is controlled with metering pump, makes two groups of glue while mixing and being coated in PVC film, subsequently into oven
Carry out drying and processing；
(5) film product is put into curing chamber, temperature is placed 48 hours in the case where being 60 degree, can make the comprehensive of product
60% or more can be improved, to obtain the PVC film with more preferable stability, gained PVC film finished surface is mirror effect,
And there is antistatic effect.
Embodiment 4:
A kind of environment-friendly water-based oil resistant glue, according to parts by weight, consisting of: 45 acrylic resin emulsions, 7 parts of fluorine silicon trees
Rouge, 8 parts of PMMA powder, 2 parts of organosilicon levelling agents, 10 parts of amine curing agents, 2 parts of catalyst.
Using the hydrophobic high method for stretching PVC film of oil resistant glue preparation oil resistant, substantially with embodiment 1, gained PVC film
Finished surface is atomized surface effect.
Embodiment 5:
A kind of environment-friendly water-based oil resistant glue, according to parts by weight, consisting of: 40 parts of polyurethane memory elastomers, 6 parts poly- two
Methyl-monosilane, 60 parts of aqueous grafted polyurethane acrylic resins.
Using the hydrophobic high method for stretching PVC film of oil resistant glue preparation oil resistant, with embodiment 1, gained PVC film finished product
Surface is bright face effect, and has self-repair function.
The PVC film of oil resistant glue production of the invention, can be made into oil rub resistance mirror surface/cloudy surface PVC film, and oil rub resistance/resist is quiet
Electronic Speculum face/cloudy surface PVC film, oil rub resistance selfreparing mirror surface/cloudy surface PVC film.
Embodiment 6:
A kind of environment-friendly water-based oil resistant glue, according to parts by weight, consisting of: 8 parts of fluorination liquid, 80 parts of aqueous grafted polyurethanes
Acrylic resin, 1 part of levelling agent, 2 parts of acylphosphine oxide light initiators.
Using the hydrophobic high method for stretching PVC film of oil resistant glue preparation oil resistant, steps are as follows:
(1), PVC film is taken, optional 50 μm, 70 μm or 100 μm of thickness.；
(2), each raw material is taken by the raw material proportioning, after being mixed, aqueous oil resistant glue is made；
(3), it is injected into the hopper of coating machine using the aqueous oil resistant glue that coating machine prepares step (2), is selected in hopper
With anilox roll or line roller (optional 90~500 mesh of mesh number) etc., the oil resistant glue is coated in the PVC film of step (1),
PVC film surface forms one layer of oil resistant gel coating.Then using above trough of coating machine be carved with micro structured pattern (such as spend
Line, the Water Cube, honeycomb, diamond shape etc.) patterned roll the oil resistant gel coating on PVC film surface is imprinted, lower section have one it is right
The pressure roller answered is transferred to the micro structured pattern in patterned roll on oil resistant gel coating；
(4), the PVC film for being coated with oil resistant gel coating carries out ultraviolet light solidification to get the hydrophobic high stretching of the oil resistant
PVC film finished product, the PVC film finished surface have pattern effect.
Embodiment 7:
A kind of environment-friendly water-based oil resistant glue, according to parts by weight, consisting of: 60 parts of waterborne organic silicon modified aqueous polyurethanes
Resin, 8 parts of poly- methyl trichlorosilanes, 5 parts of villus powder.
Using the hydrophobic high method for stretching PVC film of oil resistant glue preparation oil resistant, steps are as follows:
(1), PVC film is taken, optional 50 μm, 70 μm or 100 μm of thickness；
(2), each raw material is taken by the raw material proportioning, after being mixed, the oil resistant glue A group and oil resistant glue B group is respectively prepared；
(3), the oil resistant glue A group and oil resistant glue B group prepared step (2) using coating machine is coated in step (1) simultaneously
In PVC film, oil resistant gel coating is formed on PVC film surface；
(4), the hydrophobic high stretching PVC of the PVC film progress heat oil resistant obtained by drying for being coated with oil resistant gel coating is thin
Film finished product；
(5) film product is put into curing chamber, temperature is placed 60 hours in the case where being 40 degree, can make the comprehensive performance of product
60% or more is improved, to obtain the PVC film with more preferable stability, better stability is reached with this.
Gained PVC film finished surface is atomized surface effect.
The hydrophobic high the performance test results for stretching PVC film of oil resistant prepared by various embodiments of the present invention are as follows:
The present invention is due to using water-base resin, especially with the aqueous grafted polyurethane resin of macromolecule reticular structure,
Made with aqueous oil resistant glue water resistance, chemical resistance, anti-flammability and ageing-resistant performance with higher that it is prepared by test
With the oil resistant glue prepare PVC film then also have preferable water resistance, chemical resistance (such as the PVC film surface of preparation not
Careful to sprinkle the chemical substances such as acetone, banana oil, Tianna solution, rosin, alcohol, PVC film surface is still not damaged),
Anti-flammability and ageing-resistant performance extend the service life of PVC film.
It is all to be done according to scope of the invention as claimed in conclusion the foregoing is merely presently preferred embodiments of the present invention
Equivalent changes and modifications should all belong to the covering scope of the claims in the present invention.
Claims (10)
1. a kind of environment-friendly water-based oil resistant glue, it is characterised in that: according to parts by weight, contain 45~80 parts of water-base resins, 6~15
The oil resistance agent of part.
2. environment-friendly water-based oil resistant glue as described in claim 1, it is characterised in that: the water-base resin is waterborne polyurethane resin
Or aqueous acrylic resin.
3. environment-friendly water-based oil resistant glue as claimed in claim 2, it is characterised in that: the aqueous acrylic resin is acrylic acid
Resin emulsion, acrylic resin aqueous dispersion or acrylic resin aqueous solution.
4. environment-friendly water-based oil resistant glue as claimed in claim 2, it is characterised in that: the waterborne polyurethane resin is high score subnet
The aqueous grafted polyurethane resin of shape, the netted aqueous grafted polyurethane resin of macromolecule be water-soluble polyurethane acrylic resin,
One of aqueous polyurethane epoxy resin, aqueous polyurethane polyester resin, organosilicon modified aqueous polyurethane resin are a variety of.
5. environment-friendly water-based oil resistant glue as described in claim 1, it is characterised in that: the oil resistance agent is fluorine-containing or containing silico-organic
Object is closed, described fluorine-containing or silicon-containing organic compound is fluorination liquid, perfluoro organic compound, fluorine silicon resin, silane compound, poly- silicon
Azane, Nano particles of silicon dioxide, in any in dimethyl silicone polymer or a variety of, the perfluoro organic compound is perfluor
One or more in decyltrichlorosilane or 17 fluorine ruthenium trimethoxysilanes, the silane compound is disilane, poly- two
It is one or more in methyl-monosilane or methyl trichlorosilane.
6. environment-friendly water-based oil resistant glue as described in claim 1, it is characterised in that: according to parts by weight, contain 45~80 parts of water
Property resin, 6~15 parts of oil resistance agents, 2~12 parts of light initiators.
7. environment-friendly water-based oil resistant glue as described in claim 1, it is characterised in that: according to parts by weight, contain 45~80 parts of water
Property resin, 6~15 parts of oil resistance agents, 5~30 parts of curing agent.
8. environment-friendly water-based oil resistant glue as described in claim 1, it is characterised in that: also anti-containing 1~15 part of catalyst or 5~30
Electrostatic agent or 45~70 parts of self-repair resins or 1~20 part of AG powder or 1~20 part of villus powder or 0.5~2 part of levelling agent or above-mentioned
Several mixtures.
9. a kind of stretch PVC film using the hydrophobic height of the preparation of environment-friendly water-based factice described in claim 1~8 any one oil resistant
Method, steps are as follows:
(1), PVC film is taken；
(2), each raw material is taken by the raw material proportioning, after being mixed, aqueous oil resistant glue is made；
(3), it is coated in the PVC film of step (1) using the aqueous oil resistant glue that coating machine prepares step (2), in PVC film
Surface forms one layer of oil resistant gel coating；
(4), the PVC film for being coated with oil resistant gel coating carries out ultraviolet light solidification or the oven hydrophobic height of oil resistant obtained by drying
Stretch PVC film finished product.
10. the environment-friendly water-based hydrophobic high stretching PVC film of factice preparation oil resistant described in a kind of application claim 1~8 any one
Method, steps are as follows:
(1), PVC film is taken；
(2), each raw material is taken by the raw material proportioning, after being mixed, the oil resistant glue A group and oil resistant glue B group is respectively prepared；
(3), the PVC that the oil resistant glue A group and oil resistant glue B group prepared step (2) using coating machine is coated in step (1) simultaneously is thin
On film, oil resistant gel coating is formed on PVC film surface；
(4), the PVC film for being coated with oil resistant gel coating carries out ultraviolet light solidification or the oven hydrophobic height of oil resistant obtained by drying
Stretch PVC film finished product.
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| CN201811630846.8A CN109721754A (en) | 2018-12-28 | 2018-12-28 | A kind of environment-friendly water-based oil resistant glue and the method using the hydrophobic high stretching PVC film of its preparation oil resistant |
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| CN201811630846.8A CN109721754A (en) | 2018-12-28 | 2018-12-28 | A kind of environment-friendly water-based oil resistant glue and the method using the hydrophobic high stretching PVC film of its preparation oil resistant |
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Application publication date: 20190507 |