CN106590391B - One kind is water-fast peelable silicone modified waterborne polyurethane enteric coating and preparation method - Google Patents
One kind is water-fast peelable silicone modified waterborne polyurethane enteric coating and preparation method Download PDFInfo
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- CN106590391B CN106590391B CN201610936898.2A CN201610936898A CN106590391B CN 106590391 B CN106590391 B CN 106590391B CN 201610936898 A CN201610936898 A CN 201610936898A CN 106590391 B CN106590391 B CN 106590391B
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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
- C09D175/06—Polyurethanes from polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
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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
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/20—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Polyurethanes Or Polyureas (AREA)
- Paints Or Removers (AREA)
Abstract
The present invention relates to a kind of water-fast peelable silicone modified waterborne polyurethane enteric coating and preparation methods, belong to release coating technical field.By dewatered macromolecule dihydric alcohol and di-isocyanate reaction, substance B is obtained；Hydrophilic chain extender is added into substance B again, reacts, obtains substance C；Silicon containing component A and isopropanol are added into substance C, reaction obtains substance D；Neutralizer is added into substance D again, reacts, obtains substance E；Substance E is added in deionized water, is dispersed with stirring, obtains substance F；Levelling agent is added into substance F, is stirred to react, obtains the coating.The method of the invention process flow is simple, cost is relatively low and environmental protection；Coating of the present invention effectively raises the water resistance of packaging material while guaranteeing stripping performance, is widely used in the industries package coating such as food, drug, cigarette.
Description
Technical field
The present invention relates to a kind of water-fast peelable silicone modified waterborne polyurethane enteric coating and preparation methods, belong to removing
Technical field of coatings.
Background technique
Transfer aluminum plated technique economizes on resources by it, reduces the advantages such as cost, easy to use, obtains in packaging material circle
Greatly promote and apply.It is completely removed after the core of release coating is its fissility namely coating is aluminized with substrate plastic film
Easy degree.Release coating with high fissility is always the difficult point and emphasis of packaging industry application field, especially makes
About high speed stripping machine application gradually promote and production efficiency raising.
Existing high fissility coating is mostly solvent-based system, but solvent type release coating high energy consumption, pollution environment and danger
Evil construction personnel's health.The film of aqueous polyurethane has many advantages, such as that non-ignitable, nontoxic, free from environmental pollution and stripping performance is preferable,
Various industries are had been applied to, but its water resistance cannot be taken into account, influences the printing effect of coating surface.
Silica solution stability involved in CN201210408810.1 patent is affected by pH, cannot obtain stable cream completely
Liquid influences long-term shelf-stability, and without providing specific water-fast data.
Summary of the invention
For the deficiencies in the prior art, the purpose of the present invention is to provide a kind of water-fast peelable silicon modified aqueous
Polyurethane microcapsule coating and preparation method, the Paint preparation technology is simple, at low cost and have good water resistance and height
Fissility is widely used in the industries package coating such as food, drug and cigarette.
The purpose of the present invention is what is be achieved through the following technical solutions.
A kind of water-fast peelable silicone modified waterborne polyurethane enteric coating, each constituent and its quality of the coating
Number is as follows: 30~45 parts of macromolecule dihydric alcohol, 25~35 parts of diisocyanate, and 5~8 parts of hydrophilic chain extender, isopropanol 5~8
Part, 3~9 parts of neutralizer, 8~15 parts of silicon containing component A, 0.2~0.5 part of levelling agent, 300~400 parts of deionized water；
The macromolecule dihydric alcohol is the polyglycols that number-average molecular weight is 1000g/mol~3000g/mol；
The hydrophilic chain extender is one or both of dimethylolpropionic acid, dihydromethyl propionic acid and glycolic；
The neutralizer is triethylamine, Tri-n-Propylamine, tri-n-butylamine, N, N- dimethylethanolamine, N, N- diisopropylethylamine
One or both of with sodium hydroxide；
The silicon containing component A is that the acrylate of hydroxyl and amino-containing silane carry out Michael at 30 DEG C~50 DEG C
Addition reaction 2h~3h is prepared, wherein the molal quantity of the molal quantity of the acrylate of hydroxyl and amino-containing silane
Than for 1:1；
The levelling agent includes the levelling agent of Digao company production and one of the levelling agent of air chemical company's production
Or two kinds；Wherein, the levelling agent trade mark of Digao company production is Digao 410 or Digao 450, the levelling of air chemical company's production
The agent trade mark is Surfynol 104H.
The preferred polycarbonate glycol of the macromolecule dihydric alcohol, polycaprolactone glycol, polyethylene glycol adipate two are pure and mild
One or both of polyneopentyl glycol adipate glycol.
The preferred dicyclohexyl methyl hydride diisocyanate of the diisocyanate, toluene di-isocyanate(TDI), diphenyl-methane two are different
One of cyanate, isophorone diisocyanate, 1,6- hexamethylene diisocyanate and xyxylene isocyanates
Or two kinds.
The preferred hydroxy-ethyl acrylate of the acrylate of hydroxyl or/and hydroxyethyl methacrylate；Amino-containing silane is excellent
Select 3-aminopropyltriethoxysilane or/and N- aminoethyl -3- aminopropyltriethoxy dimethoxysilane.
The preparation method of water-fast peelable silicone modified waterborne polyurethane enteric coating of the present invention, the method step
It is as follows:
Macromolecule dihydric alcohol is first dehydrated by step 1., then to dewatered macromolecular binary at 60 DEG C~70 DEG C
Diisocyanate is added in alcohol, and mixes 0.5h~1h, then temperature is risen to 82 DEG C~86 DEG C, the reaction was continued 2.5h~3h is obtained
To substance B；
Hydrophilic chain extender is added in step 2. into substance B again, then at 82 DEG C~86 DEG C, reacts 2h~2.5h, obtains object
Matter C；
After the temperature of step 3. substance C is down to 55 DEG C~60 DEG C, then silicon containing component A and isopropanol are added into substance C, instead
1h~1.5h is answered, substance D is obtained；
After the temperature of step 4. substance D is down to 35 DEG C~40 DEG C, then neutralizer is added into substance D, reacts 0.5h~1h,
Obtain substance E；
Substance E is added in deionized water step 5., with the stirring speed of 1000rpm~1500rpm at 25 DEG C~35 DEG C
Degree is dispersed with stirring 0.5h~1h, obtains substance F；
Levelling agent is added into substance F in step 6., is stirred to react 1.5h~2h, obtains the coating.
Beneficial effect
The preparation process flow of coating of the present invention is simple, cost is relatively low, due to being free of organic solvent, avoids organic
The cost of solvent increases and its bring environmental issue；PU body is accessed using hydroxyl polymerizable silane, is improved described
The water resistance and foam inhibition ability of coating；Using silane as core, polyurethane hydrophilic segment is the microcapsule structure of shell, improves product
The levelability of stability and frosting coating.Coating of the present invention effectively improves while guaranteeing stripping performance
The water resistance of packaging material, is widely used in the industries package coating such as food, drug, cigarette.
Specific embodiment
The present invention will be further described With reference to embodiment.
Embodiment 1
11.6kg hydroxy-ethyl acrylate is uniformly mixed by step 1. with 22.14kg 3-aminopropyltriethoxysilane, so
Michael addition reaction 3h is carried out at 40 DEG C afterwards, obtains silicon containing component A, for use；
Step 2. first by 35kg number-average molecular weight be 2000g/mol polyethylene glycol adipate glycol be placed in 130 DEG C and
Vacuum carries out dehydration 1.5h under conditions of being -0.09MPa, after being cooled to 60 DEG C, then to dewatered polyethylene glycol adipate
18kg isophorone diisocyanate and 15kg '-diphenylmethane diisocyanate are added in glycol, after mixing 0.5h, then by temperature
82 DEG C are risen to, the reaction was continued 2.5h obtains substance B；
7kg dimethylolpropionic acid is added in step 3. into B substance again, then reacts 2.5h at 82 DEG C, obtains substance C；
After the temperature of step 4. substance C is down to 55 DEG C, then 9kg silicon containing component A and 5kg isopropanol are added into substance C, so
1.5h is reacted at 55 DEG C afterwards, obtains substance D；
After the temperature of step 5. substance D is down to 38 DEG C, then 8kg triethylamine is added into substance D, is then reacted at 38 DEG C
0.5h obtains substance E；
Substance E is added in 300kg deionized water step 6., is dispersed with stirring at 35 DEG C with the mixing speed of 1200rpm
0.5h obtains substance F；
0.3kg Digao 410 is added into substance F for step 7., is stirred to react 1.5h, obtains the coating.
Embodiment 2
Step 1. mixes 26.02kg hydroxyethyl methacrylate with 22.14kg 3-aminopropyltriethoxysilane
It is even, Michael addition reaction 2.5h is then carried out at 35 DEG C, obtains silicon containing component A, for use；
Step 2. first by the polycarbonate glycol that 35kg number-average molecular weight is 1500g/mol be placed in 120 DEG C and vacuum be-
Dehydration 2h is carried out under conditions of 0.09MPa, after being cooled to 60 DEG C, then the different Buddhist of 15kg is added into dewatered polycarbonate glycol
Temperature after mixing 0.5h, then is risen to 82 DEG C by your ketone diisocyanate and 14kg toluene di-isocyanate(TDI), the reaction was continued 2.5h,
Obtain substance B；
5kg dihydromethyl propionic acid and 0.5kg glycolic is added in step 3. into B substance again, then reacts at 82 DEG C
2.5h obtains substance C；
After the temperature of step 4. substance C is down to 55 DEG C, then 10kg silicon containing component A and 6kg isopropanol are added into substance C,
Then 1.5h is reacted at 55 DEG C, obtains substance D；
After the temperature of step 5. substance D is down to 35 DEG C, then into substance D be added 6kg N, N- dimethylethanolamine and
Then 0.5kg sodium hydroxide reacts 0.5h at 35 DEG C, obtain substance E；
Substance E is added in 300kg deionized water step 6., is dispersed with stirring at 35 DEG C with the mixing speed of 1200rpm
0.5h obtains substance F；
0.4kg Digao 450 is added into substance F for step 7., is stirred to react 2h, obtains the coating.
Embodiment 3
Step 1. is by 11.6kg hydroxy-ethyl acrylate and 20.64kg N- aminoethyl -3- aminopropyltriethoxy dimethoxysilane
It is uniformly mixed, Michael addition reaction 3h is then carried out at 40 DEG C, obtains silicon containing component A, for use；
Step 2. first by 10kg number-average molecular weight be 1000g/mol polycaprolactone glycol and 20kg number-average molecular weight be
The mixture of the polyethylene glycol adipate glycol of 2000g/mol is placed under conditions of 130 DEG C and vacuum are -0.09MPa and carries out
It is dehydrated 1.5h, after being cooled to 60 DEG C, then 12kg 1,6- hexamethylene diisocyanate 12kg are added into dewatered mixture
With 20kg '-diphenylmethane diisocyanate, after mixing 0.5h, then temperature risen to 82 DEG C, the reaction was continued 2.5h obtains substance B；
6kg dimethylolpropionic acid and 1kg glycolic is added in step 3. into B substance again, then reacts 2.5h at 82 DEG C,
Obtain substance C；
After the temperature of step 4. substance C is down to 55 DEG C, then 15kg silicon containing component A and 8kg isopropanol are added into substance C,
Then 1.5h is reacted at 55 DEG C, obtains substance D；
After the temperature of step 5. substance D is down to 38 DEG C, then 8kg triethylamine and 0.8kg sodium hydroxide are added into substance D,
Then 0.5h is reacted at 38 DEG C, obtains substance E；
Substance E is added in 400kg deionized water step 6., is dispersed with stirring at 35 DEG C with the mixing speed of 1300rpm
0.5h obtains substance F；
0.3kg Surfynol 104H is added into substance F for step 7., is stirred to react 1.5h, obtains the coating.
Embodiment 4
Step 1. is by 11.6kg hydroxy-ethyl acrylate and 20.64kg N- aminoethyl -3- aminopropyltriethoxy dimethoxysilane
It is uniformly mixed, Michael addition reaction 3h is then carried out at 40 DEG C, obtains silicon containing component A, for use；
Step 2. first by 35kg number-average molecular weight be 2000g/mol polyethylene glycol adipate glycol be placed in 130 DEG C and
Vacuum carries out dehydration 1.5h under conditions of being -0.09MPa, after being cooled to 65 DEG C, then to dewatered polyethylene glycol adipate
18kg isophorone diisocyanate and 15kg '-diphenylmethane diisocyanate are added in glycol, after mixing 1h, then by temperature liter
To 82 DEG C, the reaction was continued 3h obtains substance B；
7kg dimethylolpropionic acid is added in step 3. into B substance again, then reacts 3h at 82 DEG C, obtains substance C；
After the temperature of step 4. substance C is down to 60 DEG C, then 12kg silicon containing component A and 5kg isopropanol are added into substance C,
Then 1h is reacted at 60 DEG C, obtains substance D；
After the temperature of step 5. substance D is down to 38 DEG C, then 9kg n,N-diisopropylethylamine is added into substance D, then
0.5h is reacted at 38 DEG C, obtains substance E；
Substance E is added in 350kg deionized water step 6., is dispersed with stirring at 35 DEG C with the mixing speed of 1200rpm
1h obtains substance F；
0.2kg Surfynol 104H is added into substance F for step 7., is stirred to react 1.5h, obtains the coating.
The coating being prepared in Examples 1 to 4 is stood respectively and tests its stability, whether observes prepared coating
It precipitates.The coating being prepared in Examples 1 to 4 is respectively coated PET film, by the PET film after coating
It is placed in 120 DEG C of baking ovens and solidifies 12s, then the dope layer after solidification is removed with PET film, then PET film is reused,
See Table 1 for details for the number that PET film is reused.The coating being prepared in Examples 1 to 4 respectively applies PET film
PET film after coating is placed in 120 DEG C of baking ovens and solidifies 12s by cloth, by the dope layer of water droplet after hardening, then uses surface
Ware covers the water droplet on dope layer in order to avoid water droplet excessive evaporation, and water droplet is blotted after 3h, and whether the dope layer after observation immersion has
Whiting, if repeating the above-mentioned process of dripping without whiting and being observed, see Table 1 for details for test result.
Table 1
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (4)
1. a kind of water-fast peelable silicone modified waterborne polyurethane enteric coating, it is characterised in that: the coating it is each form at
Divide and its mass fraction is as follows: 30~45 parts of macromolecule dihydric alcohol, 25~35 parts of diisocyanate, 5~8 parts of hydrophilic chain extender,
5~8 parts of isopropanol, 3~9 parts of neutralizer, 8~15 parts of silicon containing component A, 0.2~0.5 part of levelling agent, deionized water 300~400
Part；
The macromolecule dihydric alcohol is the polyglycols that number-average molecular weight is 1000g/mol~3000g/mol；
The hydrophilic chain extender is one or both of dimethylolpropionic acid, dihydromethyl propionic acid and glycolic；
The neutralizer is triethylamine, Tri-n-Propylamine, tri-n-butylamine, N, N- dimethylethanolamine, N, N- diisopropylethylamine and hydrogen
One or both of sodium oxide molybdena；
The silicon containing component A is that the acrylate of hydroxyl and amino-containing silane carry out Michael's addition at 30 DEG C~50 DEG C
Reaction 2h~3h is prepared；Wherein, the molal quantity of the acrylate of hydroxyl and the mole ratio of amino-containing silane are
1:1；
The levelling agent includes one of the levelling agent of Digao company production and the levelling agent of air chemical company's production or two
Kind；Wherein, the levelling agent trade mark of Digao company production is Digao 410 or Digao 450, the levelling agent board of air chemical company's production
Number be Surfynol 104H；
The coating is prepared with the following method:
Macromolecule dihydric alcohol is first dehydrated by step 1., then at 60 DEG C~70 DEG C into dewatered macromolecule dihydric alcohol
Diisocyanate is added, and mixes 0.5h~1h, then temperature is risen to 82 DEG C~86 DEG C, the reaction was continued 2.5h~3h obtains object
Matter B；
Hydrophilic chain extender is added in step 2. into substance B again, then at 82 DEG C~86 DEG C, reacts 2h~2.5h, obtains substance C；
After the temperature of step 3. substance C is down to 55 DEG C~60 DEG C, then silicon containing component A and isopropanol are added into substance C, react 1h
~1.5h obtains substance D；
After the temperature of step 4. substance D is down to 35 DEG C~40 DEG C, then neutralizer is added into substance D, reacts 0.5h~1h, obtain
Substance E；
Substance E is added in deionized water step 5., is stirred at 25 DEG C~35 DEG C with the mixing speed of 1000rpm~1500rpm
Dispersion 0.5h~1h is mixed, substance F is obtained；
Levelling agent is added into substance F in step 6., is stirred to react 1.5h~2h, obtains the coating.
2. the water-fast peelable silicone modified waterborne polyurethane enteric coating of one kind according to claim 1, it is characterised in that:
The macromolecule dihydric alcohol is that polycarbonate glycol, polycaprolactone glycol, the pure and mild polyadipate of polyethylene glycol adipate two are new
One or both of pentadiol ester glycol.
3. the water-fast peelable silicone modified waterborne polyurethane enteric coating of one kind according to claim 1, it is characterised in that:
The diisocyanate is dicyclohexyl methyl hydride diisocyanate, toluene di-isocyanate(TDI), '-diphenylmethane diisocyanate, different Buddhist
One or both of your ketone diisocyanate, 1,6- hexamethylene diisocyanate and xyxylene isocyanates.
4. the water-fast peelable silicone modified waterborne polyurethane enteric coating of one kind according to claim 1, it is characterised in that:
The acrylate of hydroxyl is hydroxy-ethyl acrylate or/and hydroxyethyl methacrylate；Amino-containing silane is 3- aminopropyl
Triethoxysilane or/and N- aminoethyl -3- aminopropyltriethoxy dimethoxysilane.
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| CN201610936898.2A CN106590391B (en) | 2016-11-01 | 2016-11-01 | One kind is water-fast peelable silicone modified waterborne polyurethane enteric coating and preparation method |
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| CN201610936898.2A CN106590391B (en) | 2016-11-01 | 2016-11-01 | One kind is water-fast peelable silicone modified waterborne polyurethane enteric coating and preparation method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102911336A (en) * | 2012-10-23 | 2013-02-06 | 上海乘鹰新材料有限公司 | High-temperature resistant peelable water-based silica sol polyurethane microcapsule emulsion and preparation method thereof |
| CN104962192A (en) * | 2015-06-25 | 2015-10-07 | 合肥聚合辐化技术有限公司 | Water-resistant weather-resistant polyester type waterborne polyurethane emulsion and preparation method thereof |
| CN105504787A (en) * | 2015-12-28 | 2016-04-20 | 广东普赛达密封粘胶有限公司 | Silane-capped polyurethane composition and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005272833A (en) * | 2004-02-26 | 2005-10-06 | Sanyo Chem Ind Ltd | Aqueous polyurethane resin dispersion |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102911336A (en) * | 2012-10-23 | 2013-02-06 | 上海乘鹰新材料有限公司 | High-temperature resistant peelable water-based silica sol polyurethane microcapsule emulsion and preparation method thereof |
| CN104962192A (en) * | 2015-06-25 | 2015-10-07 | 合肥聚合辐化技术有限公司 | Water-resistant weather-resistant polyester type waterborne polyurethane emulsion and preparation method thereof |
| CN105504787A (en) * | 2015-12-28 | 2016-04-20 | 广东普赛达密封粘胶有限公司 | Silane-capped polyurethane composition and preparation method and application thereof |
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Address after: 056000 Lintan Industrial Park, Jinnan New District, Handan City, Hebei Province Patentee after: HEBEI ZHISHENG GREEN TECHNOLOGY CO.,LTD. Address before: 056500, A-313, children's city, South Third Ring Road, Cixian, Handan, Hebei Patentee before: HEBEI ZHISHENG GREEN TECHNOLOGY CO.,LTD. |
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Denomination of invention: A water resistant and peelable silicone modified waterborne polyurethane microcapsule coating and its preparation method Effective date of registration: 20230608 Granted publication date: 20190125 Pledgee: Cixian Sub branch of Agricultural Bank of China Co.,Ltd. Pledgor: HEBEI ZHISHENG GREEN TECHNOLOGY CO.,LTD. Registration number: Y2023980043305 |
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