CN106349449A - Environmentally friendly fluorescent water-based polyurethane and preparation method thereof - Google Patents
Environmentally friendly fluorescent water-based polyurethane and preparation method thereof Download PDFInfo
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- CN106349449A CN106349449A CN201610824032.2A CN201610824032A CN106349449A CN 106349449 A CN106349449 A CN 106349449A CN 201610824032 A CN201610824032 A CN 201610824032A CN 106349449 A CN106349449 A CN 106349449A
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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
- 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
- C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
- C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
- C08G18/0823—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups containing carboxylate salt groups or groups forming them
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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
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
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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
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4266—Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones
- C08G18/4269—Lactones
- C08G18/4277—Caprolactone and/or substituted caprolactone
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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
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
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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
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
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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
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6659—Compounds of group C08G18/42 with compounds of group C08G18/34
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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
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/6692—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/34
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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
- C08G18/28—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
- C08G18/69—Polymers of conjugated dienes
- C08G18/698—Mixtures with compounds of group C08G18/40
Abstract
The invention relates to environmentally friendly fluorescent water-based polyurethane and a preparation method thereof. In a using process, fluorescent micro-molecules have shortcomings that the fluorescent micro-molecules cannot be compatible with a matrix well, color fading is easy, dyestuff is easy to migrate, color fastness is insufficient, chromophoric groups are unevenly distributed, color is not bright enough, and is easy to remove when washed, and the like. The preparation method comprises the following steps: reacting a diisocyanate compound, oligomer glycol, dibutyltin dilaurate and a micromolecule glycol chain extender in a mixed manner, and heating and reacting to obtain a prepolymer; adding a short chain aliphatic glycol chain extender containing a hydrophilic group, heating and carrying out chain extension reaction, adding salicyl fluorone used as a crosslinking agent and continuing reacting; and cooling, adding triethylamine for neutralizing, and adding distilled water for emulsifying to obtain the environmentally friendly fluorescent water-based polyurethane emulsion of which the solid content is 14-33%. The salicyl fluorone is used as the crosslinking agent, a waterborne polyurethane molecular chain is introduced by a chemical bonding mode, and various problems caused by preparation of fluorescence type waterborne polyurethane by a blending method are solved.
Description
Technical field
The present invention relates to technical field of polymer materials is and in particular to a kind of environment-friendly type fluorescence aqueous polyurethane and its preparation
Method.
Background technology
Fluorescent small molecule often exists in use with the matrix compatibility is bad, fugitive color, dyestuff easily migrate, color jail
Degree not, the defect such as not bright-coloured, the easy eluting of the skewness of chromophoric group, color, so the research of fluorescence polymer by
Gradually become popular domain.
" three premises " (resource, the energy, pollution-free) and " four e principles " that aqueous polyurethane meets industrial development is (economical
Economy, efficiency efficiency, ecological ecology, energy energy), in recent years, in coating, binding agent, fabric is covered with paint, lacquer, colour wash, etc.
The aspects such as agent are widely used.Fluorescent small molecule is incorporated in aqueous polyurethane in the way of chemical bonding, can make
For the environment-friendly type fluorescence water-base polyurethane material going out function admirable.
Content of the invention
It is an object of the invention to provide a kind of environment-friendly type fluorescence aqueous polyurethane and preparation method thereof.
The technical solution adopted in the present invention is:
The preparation method of environment-friendly type fluorescence aqueous polyurethane it is characterised in that:
Comprise the following steps:
Step one: by diisocyanate cpd 80 ~ 100mmol, oligomer dihydroxylic alcohols 24 ~ 36mmol, di lauric dibutyl
Stannum 0.5 ~ 2mmol, small molecule glycol chain extender 2 ~ 10mmol be added to equipped with thermometer, agitator, three mouthfuls of glass bottle stopper
In flask, mix homogeneously, 20 DEG C of reaction 20min, it is warming up to 60 ~ 70 DEG C of reaction 1 ~ 2h, prepared base polyurethane prepolymer for use as；
Step 2: the short-chain aliphatic glycol chain extender 30 ~ 40mmol containing hydrophilic group, it is warming up to 70 ~ 80 DEG C of chain extending reactions 2
~ 4h, then adds 2 ~ 10mmol salicyl fluorone to continue reaction 1 ~ 3h as cross-linking agent；
Step 3: the product that step 2 is obtained is cooled to 40 ~ 60 DEG C, adds and the short-chain aliphatic dihydroxylic alcohols containing hydrophilic group
With 30 ~ 60min in the triethylamine of chain extender equimolar ratio；
Step 4: add 2 ~ 6 times of all of above material masses to step 3 in the product being obtained under high speed shear active force
Distilled water emulsion dispersion 30min ~ 60min, reaction is obtained the environment-friendly type fluorescence aqueous polyurethane that solid content is 14 ~ 33% after terminating
Emulsion.
In step one, diisocyanate cpd is selected from isophorone diisocyanate, hexamethylene diisocyanate, first
Phenylene diisocyanate, '-diphenylmethane diisocyanate.
In step one, oligomer dihydroxylic alcohols be selected from polyoxypropyleneglycol, poly-epsilon-caprolactone glycol, PCDL,
Polybutadiene diol.
In step one, small molecule glycol chain extender is selected from BDO, 1,5-PD, 1,6- hexanediol.
In step 2, the short-chain aliphatic glycol chain extender containing hydrophilic group is dihydromethyl propionic acid or dihydroxymethyl fourth
Acid.
The environment-friendly type fluorescence aqueous polyurethane emulsion that the preparation method of environment-friendly type fluorescence aqueous polyurethane is obtained as mentioned.
The invention has the advantages that
Fluorescent small molecule is incorporated in aqueous polyurethane strand by way of chemical bonding the present invention, solves small molecule
The problems such as easy to fall off, skewness and stability difference, in addition aqueous polyurethane using water as dispersant, safety and environmental protection, have wide
Wealthy application prospect.
With U.S. textile chemist with printing and dyeing Shi Xiehui (aatcc) standard to fluorescence aqueous polyurethane emulsion film after
The migration performance of fluorescence molecule is tested, and result shows, when introducing fluorescence molecule in chemical bonding mode, thermophoresis value is much
Less than blending method, this is primarily due to fluorescent chromophore and is fixed in polyurethane backbone in the way of chemical bond, and be
It is uniformly distributed in polyurethane backbone, limits chromophoric migration, such chromophore is just not easy to be eluted it is not easy to fade,
Permanent lovely luster can be kept.
Specific embodiment
With reference to specific embodiment, the present invention will be described in detail.
The preparation method of the poly- ammonia of environment-friendly type fluorescence aqueouss according to the present invention, comprises the following steps:
Step one: by diisocyanate cpd 80 ~ 100mmol, oligomer dihydroxylic alcohols 24 ~ 36mmol, di lauric dibutyl
Stannum 0.5 ~ 2mmol, small molecule glycol chain extender 2 ~ 10mmol be added to equipped with thermometer, agitator, three mouthfuls of glass bottle stopper
In flask, mix homogeneously, 20 DEG C of reaction 20min, it is warming up to 60 ~ 70 DEG C of reaction 1 ~ 2h, prepared base polyurethane prepolymer for use as；
Step 2: the short-chain aliphatic glycol chain extender 30 ~ 40mmol containing hydrophilic group, it is warming up to 70 ~ 80 DEG C of chain extending reactions 2
~ 4h, then adds 2 ~ 10mmol salicyl fluorone to continue reaction 1 ~ 3h as cross-linking agent；
Step 3: the product that step 2 is obtained is cooled to 40 ~ 60 DEG C, adds and the short-chain aliphatic dihydroxylic alcohols containing hydrophilic group
With 30 ~ 60min in the triethylamine of chain extender equimolar ratio；
Step 4: add 2 ~ 6 times of all of above material masses to step 3 in the product being obtained under high speed shear active force
Distillation water emulsification 30min ~ 60min, reaction is obtained the environment-friendly type fluorescence aqueous polyurethane that solid content is 14 ~ 33% after terminating multiple
Tanning agent emulsion.
In step one, diisocyanate cpd is selected from isophorone diisocyanate, hexamethylene diisocyanate, first
Phenylene diisocyanate, '-diphenylmethane diisocyanate.
In step one, oligomer dihydroxylic alcohols be selected from polyoxypropyleneglycol, poly-epsilon-caprolactone glycol, PCDL,
Polybutadiene diol.
In step one, small molecule glycol chain extender is selected from BDO, 1,5-PD, 1,6- hexanediol.
In step 2, the short-chain aliphatic glycol chain extender containing hydrophilic group is dihydromethyl propionic acid or dihydroxymethyl fourth
Acid.
Embodiment 1:
Step one: isophorone diisocyanate 80mmol, polyoxypropyleneglycol 24mmol, dibutyl tin laurate
0.5mmol, Isosorbide-5-Nitrae butanediol 10mmol are added to equipped with thermometer, agitator, the there-necked flask of glass bottle stopper, mix homogeneously,
20 DEG C of reaction 20min are warming up to 60 DEG C of reaction 1h, prepared base polyurethane prepolymer for use as.
Step 2: add dihydromethyl propionic acid 30mmol in step 1 system, be warming up to 70 DEG C of chain extending reaction 2h, then
2mmol salicyl fluorone is added to continue reaction 1h as cross-linking agent.
Step 3: the product that step 2 is obtained is cooled to 40 DEG C, adds three second with dihydromethyl propionic acid equimolar ratio
In amine and 30min
Step 4: add the distillation water and milk of 3 times of monomer gross mass to step 3 in the product being obtained under high speed shear active force
Change 30min, reaction is obtained the environment-friendly type fluorescence aqueous polyurethane emulsion that solid content is 25% after terminating.
Embodiment 2:
The embodiment of the present invention provide a kind of preparation method of environment-friendly type fluorescence aqueous polyurethane retanning agent, the method include successively with
Lower step:
Step one: toluene di-isocyanate(TDI) 100mmol, PCDL 36mmol, dibutyl tin laurate 1mmol, 1,5
Pentanediol 2mmol is added to equipped with thermometer, agitator, the there-necked flask of glass bottle stopper, mix homogeneously, 20 DEG C of reactions
20min is warming up to 70 DEG C of reaction 2h, prepared base polyurethane prepolymer for use as.
Step 2: add dimethylolpropionic acid 30mmol in step 1 system, be warming up to 70 DEG C of chain extending reaction 3h, then
10mmol salicyl fluorone is added to continue reaction 2h as cross-linking agent.
Step 3: the product that step 2 is obtained is cooled to 50 DEG C, adds three second with dimethylolpropionic acid equimolar ratio
In amine and 40min.
Step 4, emulsifying: in the product being obtained under high speed shear active force, add 4 times of monomer gross mass to step 3
Distillation water emulsification 40min, reaction is obtained the environment-friendly type fluorescence aqueous polyurethane emulsion that solid content is 20% after terminating.
Embodiment 3:
Step one: by diisocyanate cpd 80mmol, oligomer dihydroxylic alcohols 36mmol, dibutyl tin laurate
0.5mmol, small molecule glycol chain extender 10mmol are added to equipped with thermometer, agitator, the there-necked flask of glass bottle stopper,
Mix homogeneously, 20 DEG C of reaction 20min, it is warming up to 60 DEG C of reaction 2h, prepared base polyurethane prepolymer for use as；
Step 2: the short-chain aliphatic glycol chain extender 30mmol containing hydrophilic group, it is warming up to 80 DEG C of chain extending reaction 2h, then
10mmol salicyl fluorone is added to continue reaction 1h as cross-linking agent；
Step 3: the product that step 2 is obtained is cooled to 60 DEG C, is added and is expanded with the short-chain aliphatic dihydroxylic alcohols containing hydrophilic group
In the triethylamine of chain agent equimolar ratio and 30min；
Step 4: under high speed shear active force to step 3 be obtained product in add 6 times of all of above material masses
Distillation water emulsification 30min, reaction is obtained the environment-friendly type fluorescence aqueous polyurethane emulsion that solid content is 14% after terminating.
In step one, diisocyanate cpd is isophorone diisocyanate.
In step one, oligomer dihydroxylic alcohols are polyoxypropyleneglycol.
In step one, small molecule glycol chain extender is BDO.
In step 2, the short-chain aliphatic glycol chain extender containing hydrophilic group is dihydromethyl propionic acid or dihydroxymethyl fourth
Acid.
Embodiment 4:
Step one: by diisocyanate cpd 90mmol, oligomer dihydroxylic alcohols 30mmol, dibutyl tin laurate 1mmol,
Small molecule glycol chain extender 6mmol is added to equipped with thermometer, agitator, the there-necked flask of glass bottle stopper, mix homogeneously,
20 DEG C of reaction 20min, are warming up to 65 DEG C of reaction 1.5h, prepared base polyurethane prepolymer for use as；
Step 2: the short-chain aliphatic glycol chain extender 35mmol containing hydrophilic group, it is warming up to 75 DEG C of chain extending reaction 3h, then
6mmol salicyl fluorone is added to continue reaction 2h as cross-linking agent；
Step 3: the product that step 2 is obtained is cooled to 50 DEG C, is added and is expanded with the short-chain aliphatic dihydroxylic alcohols containing hydrophilic group
In the triethylamine of chain agent equimolar ratio and 45min；
Step 4: under high speed shear active force to step 3 be obtained product in add 4 times of all of above material masses
Distillation water emulsification 45min, reaction is obtained the environment-friendly type fluorescence aqueous polyurethane emulsion that solid content is 20% after terminating.
In step one, diisocyanate cpd is hexamethylene diisocyanate.
In step one, oligomer dihydroxylic alcohols are poly-epsilon-caprolactone glycol.
In step one, small molecule glycol chain extender is 1,5-PD.
In step 2, the short-chain aliphatic glycol chain extender containing hydrophilic group is dihydromethyl propionic acid or dihydroxymethyl fourth
Acid.
Embodiment 5:
Step one: by diisocyanate cpd 100mmol, oligomer dihydroxylic alcohols 24mmol, dibutyl tin laurate
2mmol, small molecule glycol chain extender 2mmol are added to equipped with thermometer, agitator, the there-necked flask of glass bottle stopper, mix
Close uniformly, 20 DEG C of reaction 20min, it is warming up to 70 DEG C of reaction 1h, prepared base polyurethane prepolymer for use as；
Step 2: the short-chain aliphatic glycol chain extender 40mmol containing hydrophilic group, it is warming up to 70 DEG C of chain extending reaction 4h, then
2mmol salicyl fluorone is added to continue reaction 3h as cross-linking agent；
Step 3: the product that step 2 is obtained is cooled to 40 DEG C, is added and is expanded with the short-chain aliphatic dihydroxylic alcohols containing hydrophilic group
In the triethylamine of chain agent equimolar ratio and 60min；
Step 4: under high speed shear active force to step 3 be obtained product in add 2 times of all of above material masses
Distillation water emulsification 60min, reaction is obtained the environment-friendly type fluorescence aqueous polyurethane emulsion that solid content is 33% after terminating.
In step one, diisocyanate cpd is selected from toluene di-isocyanate(TDI), '-diphenylmethane diisocyanate.
In step one, oligomer dihydroxylic alcohols are selected from PCDL, polybutadiene diol.
In step one, small molecule glycol chain extender is 1,6- hexanediol.
In step 2, the short-chain aliphatic glycol chain extender containing hydrophilic group is dihydromethyl propionic acid or dihydroxymethyl fourth
Acid.
Present disclosure is not limited to cited by embodiment, and those of ordinary skill in the art pass through to read description of the invention
And any equivalent conversion that technical solution of the present invention is taken, the claim being the present invention covered.
Claims (6)
1. environment-friendly type fluorescence aqueous polyurethane preparation method it is characterised in that:
Comprise the following steps:
Step one: by diisocyanate cpd 80 ~ 100mmol, oligomer dihydroxylic alcohols 24 ~ 36mmol, di lauric dibutyl
Stannum 0.5 ~ 2mmol, small molecule glycol chain extender 2 ~ 10mmol be added to equipped with thermometer, agitator, three mouthfuls of glass bottle stopper
In flask, mix homogeneously, 20 DEG C of reaction 20min, it is warming up to 60 ~ 70 DEG C of reaction 1 ~ 2h, prepared base polyurethane prepolymer for use as；
Step 2: the short-chain aliphatic glycol chain extender 30 ~ 40mmol containing hydrophilic group, it is warming up to 70 ~ 80 DEG C of chain extending reactions 2
~ 4h, then adds 2 ~ 10mmol salicyl fluorone to continue reaction 1 ~ 3h as cross-linking agent；
Step 3: the product that step 2 is obtained is cooled to 40 ~ 60 DEG C, adds and the short-chain aliphatic dihydroxylic alcohols containing hydrophilic group
With 30 ~ 60min in the triethylamine of chain extender equimolar ratio；
Step 4: add 2 ~ 6 times of all of above material masses to step 3 in the product being obtained under high speed shear active force
Distilled water emulsion dispersion 30min ~ 60min, reaction is obtained the environment-friendly type fluorescence aqueous polyurethane that solid content is 14 ~ 33% after terminating
Emulsion.
2. environment-friendly type fluorescence aqueous polyurethane according to claim 1 preparation method it is characterised in that:
In step one, diisocyanate cpd is selected from isophorone diisocyanate, hexamethylene diisocyanate, toluene two
Isocyanates, '-diphenylmethane diisocyanate.
3. environment-friendly type fluorescence aqueous polyurethane according to claim 1 preparation method it is characterised in that:
In step one, oligomer dihydroxylic alcohols are selected from polyoxypropyleneglycol, poly-epsilon-caprolactone glycol, PCDL, poly- fourth
Cyclohexadienediol.
4. environment-friendly type fluorescence aqueous polyurethane according to claim 1 preparation method it is characterised in that:
In step one, small molecule glycol chain extender is selected from BDO, 1,5-PD, 1,6- hexanediol.
5. the poly- ammonia of environment-friendly type fluorescence aqueouss according to claim 1 preparation method it is characterised in that:
In step 2, the short-chain aliphatic glycol chain extender containing hydrophilic group is dihydromethyl propionic acid or dimethylolpropionic acid.
6. the poly- ammonia of environment-friendly type fluorescence aqueouss that the preparation method of environment-friendly type fluorescence aqueous polyurethane as claimed in claim 1 is obtained
Ester emulsion.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330622A (en) * | 2019-07-16 | 2019-10-15 | 四川轻化工大学 | Fluorescence aqueous polyurethane and preparation method thereof |
| CN113278386A (en) * | 2021-05-08 | 2021-08-20 | 南京君弘新材料有限公司 | Environment-friendly aqueous non-silicon release film |
| CN114315633A (en) * | 2020-10-09 | 2022-04-12 | 天津大学 | Multi-hydrogen bond fluorescent chain extender and preparation method thereof |
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