CN108441095A - Enhance the method for waterborne polyurethane for synthetic leather water resistance using molecular screen primary powder - Google Patents
Enhance the method for waterborne polyurethane for synthetic leather water resistance using molecular screen primary powder Download PDFInfo
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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
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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
- 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
Abstract
The invention discloses a kind of methods enhancing waterborne polyurethane for synthetic leather water resistance using molecular screen primary powder, are related to technical field of synthetic leather, include the following steps：(1) calcining of molecular screen primary powder, the modification of (2) molecular screen primary powder, the modification of (3) aqueous polyurethane.The made modified 4A molecular sieves micro mist of the present invention can significantly increase the water resistance of aqueous polyurethane coating, the sanitation performance of aqueous polyurethane coating is improved using its distinctive Large ratio surface simultaneously, make the water resistance of aqueous polyurethane coating and sanitation performance synchronize obtain significant improvement, and water resistance increase rate reaches 60% or more, and sanitation performance increase rate reaches 50% or more.
Description
Technical field：
The present invention relates to technical field of synthetic leather, and in particular to a kind of aqueous poly- using molecular screen primary powder enhancing use for synthetic leather
The method of urethane water resistance.
Background technology：
Synthetic Leather is with gloss is soft, soft, kishke feel is strong, wear-resistant, flex endurant, anti-aging, anti-mildew
The advantages that bacterium, cold resistance are good, washable has become the optimal substitute of natural leather at present.However, Synthetic Leather row
The resin overwhelming majority that industry uses is solvent type polyurethane resin, poisonous and harmful containing a large amount of dimethylformamide, toluene etc.
Chemical solvent, all can there is a large amount of chemical solvent to evaporate into environment in synthetic leather production and use during.
For the problem of environmental pollution for overcoming solvent borne polyurethane to bring, people start to replace using aqueous polyurethane in recent years
For solvent borne polyurethane.Aqueous polyurethane is although environmentally protective, but at the same time brings the problem of water resistance declines, very big
The application of aqueous polyurethane is limited in degree.In order to solve this problem, people attempt using vegetable oil, modified polyalcohol,
Small molecule chain extender and crosslinking agent etc. are modified aqueous polyurethane, but still remain the lance of water resistance and the feature of environmental protection
Shield, i.e. water resistance improve, and the feature of environmental protection declines；The feature of environmental protection improves, and water resistance declines.
Patent CN 201410380203.8 discloses a kind of utilization zinc oxide promotion waterborne polyurethane for synthetic leather water resistance
Method, using self-control tremelliform zinc oxide to aqueous polyurethane carry out physical modification, so that the water resistance of polyurethane coating film is improved
58.04%, sanitation performance improves 46.02%.But the preparation process of tremelliform zinc oxide is complex, and this method institute
The poor repeatability of the size and structural form of tremelliform zinc oxide processed, it is difficult to be applied to industrialization large-scale production.
Invention content：
Technical problem to be solved by the present invention lies in provide a kind of to make aqueous polyurethane coating water resistance and health
Performance synchronization obtains the method for enhancing waterborne polyurethane for synthetic leather water resistance using molecular screen primary powder of significant improvement.
The technical problems to be solved by the invention are realized using technical solution below：
The method for being enhanced waterborne polyurethane for synthetic leather water resistance using molecular screen primary powder, is included the following steps：
(1) calcining of molecular screen primary powder：4A molecular screen primary powders are selected, are dried to constant weight in prior to 100~110 DEG C baking ovens,
Calcined at 250~300 DEG C successively again 1~2h, at 400~450 DEG C 2~3h of calcining to get calcining 4A molecular screen primary powders；
(2) modification of molecular screen primary powder：Above-mentioned calcining 4A molecular screen primary powders are added in absolute ethyl alcohol, are dispersed with stirring
It is even, and it is heated to reflux state 10~30min of insulated and stirred, add isocyanuric acid three-glycidyl ester and trimethylolpropane
Triglycidyl ether continues at 1~3h of insulated and stirred under reflux state, and gained mixture is with the cooling rate of 5~10 DEG C/min
- 10~-5 DEG C of insulated and stirred 0.5-1h are cooled to, recycling ethyl alcohol are then concentrated under reduced pressure, condensate residue is in 70~80 DEG C of baking ovens
Micro mist most is made to get modified 4A molecular sieve micro mists through micronizer afterwards to constant weight in drying；
(3) modification of aqueous polyurethane：Above-mentioned modified 4A molecular sieves micro mist is scattered in deionized water, is added aqueous
Polyaminoester emulsion, and it is heated to reflux state 2~5h of insulated and stirred, cooled to room temperature is to get molecular sieve modified aqueous poly-
Urethane lotion.
The average grain diameter of 4A molecular screen primary powders is at 3-5 μm in the step (1).
Calcining 4A molecular screen primary powders, absolute ethyl alcohol, isocyanuric acid three-glycidyl ester and trihydroxy methyl in the step (2)
The mass ratio of propane triglycidyl ether is 30-50:150-300:5-10:5-10.
The mass ratio of modified 4A molecular sieves micro mist and aqueous polyurethane emulsion solid content is 5-10 in the step (3):50-
100。
There is amide hydrogenation castor-oil plant with what modified 4A molecular sieve micro mists were added simultaneously into deionized water in the step (3)
Oil.
The mass ratio of the modified 4A molecular sieves micro mist and amide hydrogenation castor oil is 5-10:0.5-2.
The amide hydrogenation castor oil is made of rilanit special modification, and preparation method is：By rilanit special and fourth
It is heated to 95~105 DEG C of insulated and stirred reactions after dicarboxylic anhydride mixing, asparatate is added after acidification reaction, continues to heat
Reacted to 135~145 DEG C of insulated and stirreds, 0.1MPa be evacuated to after amidation process and keeps 30min, remove after vacuum from
It is so cooled to room temperature, micro mist is made to get amide hydrogenation castor oil through micronizer in obtained solid.
The rilanit special, succinic anhydride, asparatate mass ratio be 20-40:5-10:5-10.
The beneficial effects of the invention are as follows：The present invention successively passes through the calcination processing and physical modification system to 4A molecular screen primary powders
4A molecular sieve micro mists must be modified, using isocyanuric acid three-glycidyl ester and trihydroxymethylpropanyltri diglycidyl ether as being modified
Agent, made modified 4A molecular sieves micro mist can significantly increase the water resistance of aqueous polyurethane coating, while distinctive big using its
Specific surface improves the sanitation performance of aqueous polyurethane coating, keep the water resistance of aqueous polyurethane coating synchronous with sanitation performance
To significant improvement, and water resistance increase rate reaches 60% or more, and sanitation performance increase rate reaches 50% or more.
Specific implementation mode：
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Specific embodiment is closed, the present invention is further explained.
Embodiment 1
(1) calcining of molecular screen primary powder：4A molecular screen primary powder of the average grain diameter at 3-5 μm is selected, prior to 100~110 DEG C
Dried to constant weight in baking oven, then calcine at 250~300 DEG C successively 2h, at 400~450 DEG C calcining 2h to get calcining 4A molecules
Sieve original powder；
(2) modification of molecular screen primary powder：Above-mentioned 40g calcining 4A molecular screen primary powders are added in 200g absolute ethyl alcohols, stirring
It is uniformly dispersed, and is heated to reflux state insulated and stirred 15min, add tri- hydroxyl first of 5g isocyanuric acid three-glycidyl esters and 5g
Base propane triglycidyl ether continues at insulated and stirred 3h under reflux state, and gained mixture is with the cooling speed of 5~10 DEG C/min
Degree is cooled to -10~-5 DEG C of insulated and stirred 30min, recycling ethyl alcohol is then concentrated under reduced pressure, condensate residue is in 70~80 DEG C of baking ovens
Micro mist most is made to get modified 4A molecular sieve micro mists through micronizer afterwards to constant weight in middle drying；
(3) modification of aqueous polyurethane：Above-mentioned 50g modification 4A molecular sieve micro mists are scattered in deionized water, are added
Aqueous polyurethane emulsion (solid content 400g), and it is heated to reflux state insulated and stirred 4h, cooled to room temperature is to get molecule
Sieve modified aqueous polyurethane emulsion.
Embodiment 2
(1) calcining of molecular screen primary powder：4A molecular screen primary powder of the average grain diameter at 3-5 μm is selected, prior to 100~110 DEG C
Dried to constant weight in baking oven, then calcine at 250~300 DEG C successively 2h, at 400~450 DEG C calcining 2h to get calcining 4A molecules
Sieve original powder；
(2) modification of molecular screen primary powder：Above-mentioned 50g calcining 4A molecular screen primary powders are added in 300g absolute ethyl alcohols, stirring
It is uniformly dispersed, and is heated to reflux state insulated and stirred 15min, add tri- hydroxyl first of 5g isocyanuric acid three-glycidyl esters and 5g
Base propane triglycidyl ether continues at insulated and stirred 3h under reflux state, and gained mixture is with the cooling speed of 5~10 DEG C/min
Degree is cooled to -10~-5 DEG C of insulated and stirred 30min, recycling ethyl alcohol is then concentrated under reduced pressure, condensate residue is in 70~80 DEG C of baking ovens
Micro mist most is made to get modified 4A molecular sieve micro mists through micronizer afterwards to constant weight in middle drying；
(3) modification of aqueous polyurethane：Above-mentioned 50g modification 4A molecular sieve micro mists are scattered in deionized water, are added
Aqueous polyurethane emulsion (solid content 400g), and it is heated to reflux state insulated and stirred 4h, cooled to room temperature is to get molecule
Sieve modified aqueous polyurethane emulsion.
Embodiment 3
(1) calcining of molecular screen primary powder：4A molecular screen primary powder of the average grain diameter at 3-5 μm is selected, prior to 100~110 DEG C
Dried to constant weight in baking oven, then calcine at 250~300 DEG C successively 2h, at 400~450 DEG C calcining 2h to get calcining 4A molecules
Sieve original powder；
(2) modification of molecular screen primary powder：Above-mentioned 50g calcining 4A molecular screen primary powders are added in 300g absolute ethyl alcohols, stirring
It is uniformly dispersed, and is heated to reflux state insulated and stirred 15min, add tri- hydroxyl first of 5g isocyanuric acid three-glycidyl esters and 5g
Base propane triglycidyl ether continues at insulated and stirred 3h under reflux state, and gained mixture is with the cooling speed of 5~10 DEG C/min
Degree is cooled to -10~-5 DEG C of insulated and stirred 30min, recycling ethyl alcohol is then concentrated under reduced pressure, condensate residue is in 70~80 DEG C of baking ovens
Micro mist most is made to get modified 4A molecular sieve micro mists through micronizer afterwards to constant weight in middle drying；
(3) modification of aqueous polyurethane：Above-mentioned 50g is modified 4A molecular sieves micro mist and 5g amide hydrogenation castor oil is scattered in
In deionized water, aqueous polyurethane emulsion (solid content 400g) is added, and is heated to reflux state insulated and stirred 4h, it is naturally cold
But to room temperature to get molecular sieve modified aqueous polyurethane emulsion.
The preparation of amide hydrogenation castor oil：It is heated to 95~105 DEG C after 30g rilanit specials and 6g succinic anhydrides are mixed
Insulated and stirred is reacted, and 5g asparatates are added after acidification reaction, continues to be heated to 135~145 DEG C of insulated and stirred reactions,
It is evacuated to 0.1MPa after amidation process and keeps 30min, removes cooled to room temperature after vacuum, obtained solid is through super
Micro mist is made to get amide hydrogenation castor oil in atomizer.
Embodiment 4
(1) calcining of molecular screen primary powder：4A molecular screen primary powder of the average grain diameter at 3-5 μm is selected, prior to 100~110 DEG C
Dried to constant weight in baking oven, then calcine at 250~300 DEG C successively 2h, at 400~450 DEG C calcining 2h to get calcining 4A molecules
Sieve original powder；
(2) modification of molecular screen primary powder：Above-mentioned 50g calcining 4A molecular screen primary powders are added in 300g absolute ethyl alcohols, stirring
It is uniformly dispersed, and is heated to reflux state insulated and stirred 15min, add tri- hydroxyl first of 5g isocyanuric acid three-glycidyl esters and 5g
Base propane triglycidyl ether continues at insulated and stirred 3h under reflux state, and gained mixture is with the cooling speed of 5~10 DEG C/min
Degree is cooled to -10~-5 DEG C of insulated and stirred 30min, recycling ethyl alcohol is then concentrated under reduced pressure, condensate residue is in 70~80 DEG C of baking ovens
Micro mist most is made to get modified 4A molecular sieve micro mists through micronizer afterwards to constant weight in middle drying；
(3) modification of aqueous polyurethane：Above-mentioned 50g is modified 4A molecular sieves micro mist and 5g amide hydrogenation castor oil is scattered in
In deionized water, aqueous polyurethane emulsion (solid content 400g) is added, and is heated to reflux state insulated and stirred 4h, it is naturally cold
But to room temperature to get molecular sieve modified aqueous polyurethane emulsion.
The preparation of amide hydrogenation castor oil：It is heated to 95~105 after 40g rilanit specials and 10g succinic anhydrides are mixed
8g asparatates are added after acidification reaction in the reaction of DEG C insulated and stirred, continue to be heated to 135~145 DEG C of insulated and stirreds anti-
It answers, 0.1MPa is evacuated to after amidation process and keeps 30min, removes cooled to room temperature after vacuum, obtained solid
Micro mist is made to get amide hydrogenation castor oil through micronizer.
Reference examples 1
(1) calcining of molecular screen primary powder：4A molecular screen primary powder of the average grain diameter at 3-5 μm is selected, prior to 100~110 DEG C
Dried to constant weight in baking oven, then calcine at 250~300 DEG C successively 2h, at 400~450 DEG C calcining 2h to get calcining 4A molecules
Sieve original powder；
(2) modification of molecular screen primary powder：Above-mentioned 50g calcining 4A molecular screen primary powders are added in 300g absolute ethyl alcohols, stirring
It is uniformly dispersed, and is heated to reflux state insulated and stirred 15min, add 5g isocyanuric acid three-glycidyl esters, continue at back
Insulated and stirred 3h under stream mode, gained mixture are cooled to -10~-5 DEG C of insulated and stirreds with the cooling rate of 5~10 DEG C/min
30min, is then concentrated under reduced pressure recycling ethyl alcohol, and condensate residue is dried in 70~80 DEG C of baking ovens to constant weight, most afterwards through Ultramicro-powder
Micro mist is made to get modified 4A molecular sieve micro mists in broken machine；
(3) modification of aqueous polyurethane：Above-mentioned 50g modification 4A molecular sieve micro mists are scattered in deionized water, are added
Aqueous polyurethane emulsion (solid content 400g), and it is heated to reflux state insulated and stirred 4h, cooled to room temperature is to get molecule
Sieve modified aqueous polyurethane emulsion.
Reference examples 2
(1) calcining of molecular screen primary powder：4A molecular screen primary powder of the average grain diameter at 3-5 μm is selected, prior to 100~110 DEG C
Dried to constant weight in baking oven, then calcine at 250~300 DEG C successively 2h, at 400~450 DEG C calcining 2h to get calcining 4A molecules
Sieve original powder；
(2) modification of molecular screen primary powder：Above-mentioned 50g calcining 4A molecular screen primary powders are added in 300g absolute ethyl alcohols, stirring
It is uniformly dispersed, and is heated to reflux state insulated and stirred 15min, add 5g trihydroxymethylpropanyltri diglycidyl ethers, continue
The insulated and stirred 3h under reflux state, gained mixture are cooled to -10~-5 DEG C of heat preservations with the cooling rate of 5~10 DEG C/min and stir
30min is mixed, recycling ethyl alcohol is then concentrated under reduced pressure, condensate residue is dried in 70~80 DEG C of baking ovens to constant weight, most afterwards through ultra micro
Micro mist is made to get modified 4A molecular sieve micro mists in pulverizer；
(3) modification of aqueous polyurethane：Above-mentioned 50g modification 4A molecular sieve micro mists are scattered in deionized water, are added
Aqueous polyurethane emulsion (solid content 400g), and it is heated to reflux state insulated and stirred 4h, cooled to room temperature is to get molecule
Sieve modified aqueous polyurethane emulsion.
Reference examples 3
(1) calcining of molecular screen primary powder：4A molecular screen primary powder of the average grain diameter at 3-5 μm is selected, prior to 100~110 DEG C
Dried to constant weight in baking oven, then calcine at 250~300 DEG C successively 2h, at 400~450 DEG C calcining 2h to get calcining 4A molecules
Sieve original powder；
(2) modification of aqueous polyurethane：Above-mentioned 50g calcining 4A molecular sieve micro mists are scattered in deionized water, are added
Aqueous polyurethane emulsion (solid content 400g), and it is heated to reflux state insulated and stirred 4h, cooled to room temperature is to get molecule
Sieve modified aqueous polyurethane emulsion.
Embodiment 5
It is utilized respectively embodiment 1-4 and prepares molecular sieve modified aqueous polyurethane emulsion, and be arranged and be modified in molecular screen primary powder
When do not add the reference examples 1 of trihydroxymethylpropanyltri diglycidyl ether, do not add isocyanuric acid three when molecular screen primary powder is modified
The reference examples 2 of ethylene oxidic ester, the reference examples 3 for not carrying out molecular screen primary powder modification are implemented with patent CN 201410380203.8
Example 1 as a contrast example 4, with the aqueous polyurethane emulsion that is not modified example 5 as a contrast, wherein aqueous polyurethane emulsion used
Component it is identical with each group distribution ratio.The performance for measuring made aqueous polyurethane emulsion film, such as table 1-1 and table 1-
Shown in 2.
The performance of table 1-1 aqueous polyurethane emulsion films
The performance of table 1-2 aqueous polyurethane emulsion films
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (8)
1. utilizing the method for molecular screen primary powder enhancing waterborne polyurethane for synthetic leather water resistance, which is characterized in that including walking as follows
Suddenly：
(1) calcining of molecular screen primary powder：4A molecular screen primary powders are selected, are dried to constant weight in prior to 100~110 DEG C baking ovens, then according to
Calcined at inferior to 250~300 DEG C 1~2h, at 400~450 DEG C 2~3h of calcining to get calcining 4A molecular screen primary powders；
(2) modification of molecular screen primary powder：Above-mentioned calcining 4A molecular screen primary powders are added in absolute ethyl alcohol, are dispersed with stirring uniformly, and
It is heated to reflux state 10~30min of insulated and stirred, adds isocyanuric acid three-glycidyl ester and trimethylolpropane tris contracting
Water glycerin ether, continues at 1~3h of insulated and stirred under reflux state, and gained mixture is cooled down with the cooling rate of 5~10 DEG C/min
To -10~-5 DEG C of insulated and stirred 0.5-1h, recycling ethyl alcohol is then concentrated under reduced pressure, condensate residue is dry in 70~80 DEG C of baking ovens
To constant weight, micro mist most is made to get modified 4A molecular sieve micro mists through micronizer afterwards；
(3) modification of aqueous polyurethane：Above-mentioned modified 4A molecular sieves micro mist is scattered in deionized water, aqueous poly- ammonia is added
Ester lotion, and it is heated to reflux state 2~5h of insulated and stirred, cooled to room temperature is to get molecular sieve modified aqueous polyurethane
Lotion.
2. the method according to claim 1 for enhancing waterborne polyurethane for synthetic leather water resistance using molecular screen primary powder,
It is characterized in that：The average grain diameter of 4A molecular screen primary powders is at 3-5 μm in the step (1).
3. the method according to claim 1 for enhancing waterborne polyurethane for synthetic leather water resistance using molecular screen primary powder,
It is characterized in that：Calcining 4A molecular screen primary powders, absolute ethyl alcohol, isocyanuric acid three-glycidyl ester and three hydroxyl first in the step (2)
The mass ratio of base propane triglycidyl ether is 30-50:150-300:5-10:5-10.
4. the method according to claim 1 for enhancing waterborne polyurethane for synthetic leather water resistance using molecular screen primary powder,
It is characterized in that：The mass ratio of modified 4A molecular sieves micro mist and aqueous polyurethane emulsion solid content is 5-10 in the step (3):
50-100。
5. the method according to claim 1 for enhancing waterborne polyurethane for synthetic leather water resistance using molecular screen primary powder,
It is characterized in that：There is amide hydrogenation castor with what modified 4A molecular sieve micro mists were added simultaneously into deionized water in the step (3)
Sesame oil.
6. the method according to claim 5 for enhancing waterborne polyurethane for synthetic leather water resistance using molecular screen primary powder,
It is characterized in that：The mass ratio of the modified 4A molecular sieves micro mist and amide hydrogenation castor oil is 5-10:0.5-2.
7. the method according to claim 5 for enhancing waterborne polyurethane for synthetic leather water resistance using molecular screen primary powder,
It is characterized in that：The amide hydrogenation castor oil is made of rilanit special modification, and preparation method is：By rilanit special and fourth
It is heated to 95~105 DEG C of insulated and stirred reactions after dicarboxylic anhydride mixing, asparatate is added after acidification reaction, continues to heat
Reacted to 135~145 DEG C of insulated and stirreds, 0.1MPa be evacuated to after amidation process and keeps 30min, remove after vacuum from
It is so cooled to room temperature, micro mist is made to get amide hydrogenation castor oil through micronizer in obtained solid.
8. the method according to claim 7 for enhancing waterborne polyurethane for synthetic leather water resistance using molecular screen primary powder,
It is characterized in that：The rilanit special, succinic anhydride, asparatate mass ratio be 20-40:5-10:5-10.
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|---|---|---|---|
| CN201810191341.XA CN108441095A (en) | 2018-03-08 | 2018-03-08 | Enhance the method for waterborne polyurethane for synthetic leather water resistance using molecular screen primary powder |
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| CN201810191341.XA CN108441095A (en) | 2018-03-08 | 2018-03-08 | Enhance the method for waterborne polyurethane for synthetic leather water resistance using molecular screen primary powder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485170A (en) * | 2019-08-28 | 2019-11-22 | 中国第一汽车股份有限公司 | A kind of leather surface layer slurry of anion polyurethane resin |
-
2018
- 2018-03-08 CN CN201810191341.XA patent/CN108441095A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485170A (en) * | 2019-08-28 | 2019-11-22 | 中国第一汽车股份有限公司 | A kind of leather surface layer slurry of anion polyurethane resin |
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Application publication date: 20180824 |