CN109942792A - A kind of phosphorous water-based polyurethane curing agent and its preparation method and application - Google Patents
A kind of phosphorous water-based polyurethane curing agent and its preparation method and application Download PDFInfo
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Abstract
The invention belongs to coating curing agent field, a kind of phosphorous water-based polyurethane curing agent and its preparation method and application is disclosed.The preparation method is that: HDI trimer, di based compound and poly glycol monomethyl ether are added in reactor and are uniformly mixed; it is reacted under inert atmosphere protection at 40~90 DEG C; it is cooled to 45 DEG C or less after the reaction was completed; neutralizer is added to neutralize; it is cooled to room temperature to get phosphorous water-based polyurethane curing agent is arrived.The water dispersible of phosphorous water-based polyurethane curing agent prepared by the present invention is good, partial size is small, stable storing；Have the characteristics that film drying speed, hardness of film are high and medium-resistance is excellent and good hydrolytic resistance, anti-flammability with its waterborne two-component polyurethane coating prepared.
Description
Technical field
The invention belongs to coating curing agent fields, and in particular to a kind of phosphorous water-based polyurethane curing agent and preparation method thereof
And application.
Background technique
At present the mechanical performance of double-component waterborne polyurethane coating, resistance to medium, weatherability, decorative appearance etc. can with it is double
Component solvent type coating compares favourably, and has been increasingly becoming the first choice of high-performance environment friendly coating.Dual-component aqueous polyurethane (2K-WPU)
It is mainly made of water-based hydroxyl resin and water dispersible polyisocyanate curing agent, wherein water dispersible polyisocyanate curing agent
(WDP) be 2K-WPU coating property important factor in order.The synthesis of WDP mainly passes through hydrophilic component and reacts generation ammonia with-NCO
Hydrophilic radical is grafted on polyisocyanate molecule chain by carbamate.Existing WDP is primarily present that water dispersible is poor, NCO%
Low, poor storage stability, with disadvantages such as 2K-WPU appearance of film, hardness and the patience differences of its preparation.To solve these problems, in
State patent CN107522841A is using the small molecules sulfonic acid such as ethylenediamine base ethanesulfonic acid sodium, ethylenediamine base propanesulfonate and carboxylic acid mixing
The water-based polyurethane curing agent that viscosity is low, water dispersible is excellent has been made as hydrophilic modifier.But sulfonic acid is neutralized as strong acid
Sulfonate afterwards has very strong hydrophily and very poor ester dissolubility, easily occurs with other components poor compatibility in system even not
It is compatible and lead to the situation that system is muddy or coating is opaque.In addition, sulfonic acid type water-based polyurethane is at high cost, reaction controlling difficulty
Greatly, also higher to equipment requirement.It is limitation sulfonic acid type hydrophilic modifying agent less aqueous with the poor compatibility of polyisocyanates, source
Principal element in polyurethane curing agent application.Chinese patent CN105968304A is carried out using hydroxycarboxylic acid and hydrophilic polyether etc.
Hydrophilic modifying, relative to sulfonic acid type hydrophilic modifying agent, carboxylic acid type hydrophilic modifier raw material is easy to get, is environmentally friendly, with polyisocyanates
Compatibility is good, is the excellent modifying agent of modified polyisocyanate.But metal protective coating and in terms of, it is desirable that water
Property polyurethane and metal can be good at be complexed effect, and require material have certain antiseptic fire-retardation performance.And phosphate
Anionic hydrophilic radical due to its special construction, can with metal surface ion complexation at distinctive phosphatization structure, wherein
Since P elements have good flame retardant property, before having good application in terms of the corrosion resistance of fire proofing and metal
Scape.Therefore, stable storing is prepared with phosphatic type hydrophilic modifier, the phosphorous polyurethane curing agent of function admirable need to be visited further
Rope.
Summary of the invention
In place of the above shortcoming and defect of the existing technology, the primary purpose of the present invention is that providing a kind of phosphorous
The preparation method of water-based polyurethane curing agent.
Another object of the present invention is to provide one kind to pass through phosphorous water-based polyurethane curing agent obtained by the above method.
A further object of the present invention is to provide above-mentioned phosphorous water-based polyurethane curing agents to apply in dual-component aqueous polyurethane
Application in material.
The object of the invention is achieved through the following technical solutions:
A kind of preparation method of phosphorous water-based polyurethane curing agent, including following preparation step:
Hexamethylene diisocyanate (HDI) tripolymer, di based compound and poly glycol monomethyl ether are added to
It is uniformly mixed in reactor, is reacted under inert atmosphere protection at 40~90 DEG C, be cooled to 45 DEG C after the reaction was completed hereinafter, in addition
It neutralizes, is cooled to room temperature to get phosphorous water-based polyurethane curing agent is arrived with agent.
Further, the quality percentage that the HDI trimer, di based compound and poly glycol monomethyl ether are added
Content is HDI trimer 75%~85%, di based compound 1%~10%, poly glycol monomethyl ether 12%~25%.
Further, isocyanate group (- NCO%) content is 21.7%~22.2% in the HDI trimer, and 25 DEG C viscous
Degree is 2500~3250mPas.
Further, the di based compound is the unit containing 1 or 2 or more hydroxy functional group or polynary
Phosphoric acid based compound can be phosphenylic acid pentaerythritol diester (PPhDH), N, bis- (2- ethoxy) aminomethy-lenephosphonic acids of N-
Diethylester (FRC-6), phosphorus-containing polyol Exolit OP550, phosphorous polyethers, at least one in phosphorous-containing polyester polyalcohol BY3009T
Kind.
Further, the molecular weight of the poly glycol monomethyl ether is 350~1000.
Further, the reaction time is 5~8h.
Further, the molar ratio of the di based compound and poly glycol monomethyl ether is (1.0~2.5): 1.
Further, the neutralizer is triethylamine, N-methylmorpholine, N, N- dimethyl ethylenimine, N, N- dimethyl second
At least one of hydramine；The additional amount of neutralizer and the molar ratio of phosphate group are (0.8~1.2): 1.
A kind of phosphorous water-based polyurethane curing agent, is prepared by the above method.
Further ,-NCO% the content of the phosphorous water-based polyurethane curing agent is 15%~19%, 25 DEG C of viscosity
For 2000~5500mPas, appearance colorless is transparent.
Application of the above-mentioned phosphorous water-based polyurethane curing agent in waterborne two-component polyurethane coating.
Further, the applying step are as follows: by phosphorous water-based polyurethane curing agent and water-based hydroxyl resin according to-
NCO/-OH molar ratio is (0.8~1.8): 1 is compounded.
Preparation method of the invention and obtained product have the following advantages that and the utility model has the advantages that
(1) present invention is modified isocyanates using di based compound, and P elements, which are different from halogen, to be had
The property of environmental protection flame retardant, thus introduce phosphatic type hydrophilic radical can make water-base polyurethane material obtained have it is certain good and compared with
For the flame retardant property of environment-friendly and low-toxicity property；Secondly, the special construction of phosphoric acid can with metal material complexing, in metal surface shape
Have metal so the aqueous polyurethane containing phosphate group can be used for the protection of metal at one layer of organic phosphoric acid protective film
Good Corrosion Protection；
(2) phosphorous water-based polyurethane curing agent viscosity of the invention is low, stable storing, and solid content is high；The 2K-WPU of preparation
Film transparency is high, appearance is good, and film adhesive, flexibility and impact resistance are excellent.Drying speed, hardness of film and patience
It is obviously improved, and there is preferable flame retardant property, very well applied in terms of the corrosion resistance of fire proofing and metal.
(3) prepared by the present invention is aqueous polyurethane coating with bi component, and storage is stablized, and contained VOC is low, nontoxic, nonflammable,
Solid content is high, without metallic catalysts such as organotins.Both environmental protection also helped the storage-stable of curing agent, and production energy consumption is low, behaviour
Make simple, safety, is suitble to large-scale industrial production.
Detailed description of the invention
Fig. 1 is the infrared spectrogram of the phosphorous water-based polyurethane curing agent of gained in embodiment 1；
Fig. 2 is the hydrogen nuclear magnetic resonance spectrogram of the phosphorous water-based polyurethane curing agent of gained in embodiment 1.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
In following example, the performance of phosphorous water-based polyurethane curing agent and waterborne two-component polyurethane coating is using following
Method detection: solid content is measured according to GB/T 1725-2007；NDJ- type rotary viscosity is used according to GB/T 12009.3-2009
Meter measurement dispersion viscosity；Film surface drying time is measured according to GB/T 1728-1979；It is measured and is applied according to GB/T 6739-2006
Film hardness；Coating film gloss is measured using 60 ° of angle WGG6O-E4 type Grossmeters according to GB/T 9754-2007；According to GB/
T9286-1998 measures film adhesive；Film impact resistance is measured according to GB/T 1732-1993；According to GB/T5209-1985
Water-resistance property of coating and Corrosion Protection are measured using soaking at room temperature method；Divided using U.S. TGA-250 type thermal gravimetric analyzer
Analysis test, measures coating hot property.
Embodiment 1
(1) preparation of phosphorous water-based polyurethane curing agent, the type and mass percent of each component raw material such as table 1:
Table 1
| Poly glycol monomethyl ether (MPEG 600) | 20 |
| Phosphorous-containing polyester polyalcohol BY3009T | 2.12 |
| Triethylamine (TEA) | 0.36 |
| HDI trimer | 77.52 |
| It is total | 100 |
Preparation process: being added HDI trimer in a kettle, by phosphorous-containing polyester polyalcohol BY3009T, polyethyleneglycol first
Ether is mixed into uniform solution, is added in reaction kettle under nitrogen protection, in 40-90 DEG C of reaction 5h, until system-NCO content reaches reason
When by value, 45 DEG C are cooled to, neutralizer triethylamine is added, keeps the temperature 30min, is cooled to room temperature solid to get phosphorous aqueous polyurethane
Agent.
(2) phosphorous water-based polyurethane curing agent performance: viscosity (25 DEG C) 2600mPas ,-NCO% content 18.39%.
(3) preparation of aqueous double-component polyurethane coating:
By the phosphorous water-based polyurethane curing agent of preparation and hydroxy polyacrylate lotion (hydroxyl value=82mgKOH/g), press-
NCO/-OH molar ratio is that 1.3:1 prepares 2K-WPU coating.Specific steps are as follows: weighing the phosphorous aqueous polyurethane of metering
Curing agent is put in dispersion bucket, and the defoaming agent (German Digao TEGO-810 aqueous defoamer) of 0.2wt%, 0.2wt% is added
Levelling agent (German Digao TEGO-450 levelling agent), the thickener (the thickener RM-8W of DOW company) of 0.6wt%, 2wt%
Coalescing agent (dipropylene glycol methyl ether/dipropylene=1:1), disperses 20min under 700r/min, then by hydroxyl poly- third
Olefin(e) acid ester lotion is added slowly thereto, and stirs 3min, when necessary plus in right amount the solid content of tap water adjustment coating to 50-
55%, it stirs evenly, with 240 mesh filter-cloth filterings to get waterborne two-component polyurethane coating.
(4) performance of double-component waterborne polyurethane coating such as table 2:
Table 2
2 result of table illustrates the double-component water paint film using phosphorous water-based polyurethane curing agent manufactured in the present embodiment
The performances such as rate of drying, resistance to medium be better than comprehensively Bayer A.G product Bayhydrol U XP 2750 performance.
The water dispersible of the phosphorous water-based polyurethane curing agent of preparation is more preferable, it can be evenly dispersed in water-based hydroxyl resin, is formed thin
Small droplet gradually mutually merges sufficiently reaction with hydroxy resin particle, is formed transparent with the volatilization of moisture and a small amount of cosolvent
Fine and close film.Molecule inside WDP molecule especially droplet can sufficiently merge with hydroxy resin, cross-linking reaction, resulting WDP
Film crosslink density is high, and compactness is good, to improve the hardness of film, patience and other film performances.
Product structure is analyzed with infrared spectroscopy.Fig. 1 is the red of HDI trimer and phosphorous water-based polyurethane curing agent
External spectrum figure.As seen from the figure, in 2272cm-1(the antisymmetry stretching vibration absorption peak of-NCO), 1686cm-1(C=O stretching vibration
Absorption peak), 2939cm-1(-CH2Stretching vibration absorption peak), 1462cm-1(-CH2Antisymmetry bending vibration absorption peak) at occur
Strong characteristic peak.And on the infrared spectroscopy of WDP other than having above-mentioned polyisocyanates characteristic feature peak, in 1109cm-1Place
The absorption peak for also having-C-O-C- shows that MPEG is successfully grafted polyisocyanates.And HDI trimer is compared, WDP exists
2272cm-1Characteristic peak at (- NCO) obviously weakens, and in 1686cm-1(C=O) and 3381cm-1(in carbamate groups-
N-H the characteristic peak enhancing at) shows that-NCO participates in reaction conversion for carbamate groups ,-OH vibration absorption peak (3470cm-1) disappearance also further demonstrated that the hydroxyl in modifying agent reacts completely with-NCO.And in 1000~1200cm-1Place is same
There is the stretching vibration absworption peak of P-O, it may be said that bright to have synthesized phosphatic type polyurethane curing agent.Fig. 2 is HDI trimer and contains
The hydrogen nuclear magnetic resonance spectrogram of phosphorus water-based polyurethane curing agent.With HDI trimer1H NMR spectra is compared, WDP's1H NMR spectra
In 2.16-the 2.26ppm (- CH- hydrogen peak in hexatomic ring), 3.54-the 3.64ppm (- O-CH in MPEG2-CH2Hydrogen peak), 4.03-
4.23ppm(-CH2Methylene hydrogen peak in-O- (C=O)-NH-), 5.00-the 5.10ppm (- CH in solvent PMA2- O- (C=
O)-hydrogen peak) and 7.15-7.35ppm (- O- (C=O)-NH- hydrogen peak) at there is new feature hydrogen peak, meet WDP chemistry knot
Structure, it was demonstrated that the presence of WDP.
Embodiment 2
(1) preparation of phosphorous water-based polyurethane curing agent, the type and mass percent of each component raw material such as table 3:
Table 3
| Poly glycol monomethyl ether (MPEG 600) | 21.54 |
| Phosphenylic acid pentaerythritol diester (PPhDH) | 2.76 |
| Triethylamine (TEA) | 0.18 |
| HDI trimer | 75.52 |
| It is total | 100 |
Preparation process: being added HDI trimer in a kettle, by phosphenylic acid pentaerythritol diester (PPhDH), poly- second two
The mixing of alcohol monomethyl ether, is added in reaction kettle under nitrogen protection, in 80 DEG C of reaction 6h, until when system NCO content reaches theoretical value, drop
Neutralizer triethylamine is added to 45 DEG C in temperature, keeps the temperature 30min, is cooled to room temperature to get phosphorous water-based polyurethane curing agent.
(2) performance of phosphorous polyurethane curing agent: viscosity (25 DEG C) 4370mPas ,-NCO% content 18.06%.
(3) preparation of double-component polyurethane coating:
By the phosphorous water-based polyurethane curing agent of preparation and hydroxy polyacrylate lotion (hydroxyl value=82mgKOH/g), press-
NCO/-OH molar ratio is that 1.3:1 prepares 2K-WPU coating.Specific steps are as follows: weighing the phosphorous urethane cures of metering
Agent is put in dispersion bucket, and the defoaming agent (German Digao TEGO-810 aqueous defoamer) of 0.2wt%, the levelling of 0.2wt% is added
Agent (German Digao TEGO-450 levelling agent), the thickener (the thickener RM-8W of DOW company) of 0.6wt%, 2wt% film forming
Auxiliary agent (dipropylene glycol methyl ether/dipropylene=1:1), disperses 20min, then by hydroxyl polyacrylic acid under 700r/min
Ester lotion is added slowly thereto, and stirs 3min, and the solid content of tap water adjustment coating is stirred to 50-55% when necessary plus in right amount
It mixes uniformly, with 240 mesh filter-cloth filterings to get waterborne two-component polyurethane coating.
(4) performance of double-component waterborne polyurethane coating such as table 4:
Table 4
Embodiment 3
(1) preparation of phosphorous water-based polyurethane curing agent, the type and mass percent of each component raw material such as table 5:
Table 5
| Poly glycol monomethyl ether (MPEG 600) | 20 |
| Phosphorous polyethers (molecular weight 1000) | 2.12 |
| N, N- dimethyl cyclohexyl amine (DMCA) | 0.36 |
| HDI trimer | 77.52 |
| It is total | 100 |
Preparation process: being added HDI trimer in a kettle, phosphorous polyethers, poly glycol monomethyl ether is mixed into uniform
Solution is added in reaction kettle under nitrogen protection, in 90 DEG C of reaction 4h, until being cooled to 45 when system NCO content reaches theoretical value
DEG C, neutralizer N is added, N- dimethyl cyclohexyl amine keeps the temperature 30min, is cooled to room temperature to get phosphorous water-based polyurethane curing agent.
(2) performance of phosphorous polyurethane curing agent: viscosity (25 DEG C) 2810mPas ,-NCO% content 18.65%.
(3) preparation of double-component waterborne polyurethane coating:
By the phosphorous polyurethane curing agent of preparation and hydroxy polyacrylate lotion (hydroxyl value=82mgKOH/g), by NCO/
OH molar ratio is that 1.3:1 prepares 2K-WPU coating.Specific steps are as follows: weighing the phosphorous polyurethane curing agent of metering, put
In dispersion bucket, defoaming agent (German Digao TEGO-810 aqueous defoamer), the levelling agent (moral of 0.2wt% of 0.2wt% is added
State's Digao TEGO-450 levelling agent), the coalescing agent of the thickener (the thickener RM-8W of DOW company) of 0.6wt%, 2wt%
(dipropylene glycol methyl ether/dipropylene=1:1), disperses 20min under 700r/min, then by hydroxy polyacrylate cream
Liquid is added slowly thereto, and stirs 3min, and for the solid content of tap water adjustment coating to 50-55%, stirring is equal when necessary plus in right amount
It is even, with 240 mesh filter-cloth filterings to get waterborne two-component polyurethane coating.
(4) performance of double-component waterborne polyurethane coating such as table 6:
Table 6
Embodiment 4
(1) preparation of phosphorous water-based polyurethane curing agent, the type and mass percent of each component raw material such as table 7:
Table 7
| Poly glycol monomethyl ether (MPEG 600) | 20 |
| Phosphorus-containing polyol Exolit OP550 | 3 |
| N-methylmorpholine | 0.47 |
| HDI trimer | 76.53 |
| It is total | 100 |
Preparation process: being added HDI trimer in a kettle, by phosphorus-containing polyol Exolit OP550, polyethyleneglycol
Methyl ether is mixed into uniform solution, is added in reaction kettle under nitrogen protection, in 70 DEG C of reaction 6h, until system-NCO content reaches theory
When value, 45 DEG C are cooled to, neutralizer N-methylmorpholine is added, under high speed shear plus water dispersion, heat preservation 30min are cooled to room
Temperature is to get phosphorous water-based polyurethane curing agent.
(2) performance of phosphorous water-based polyurethane curing agent: average grain diameter 237nm, viscosity (25 DEG C) 259mPs ,-
NCO% content 19%.
(3) preparation of double-component waterborne polyurethane coating:
By the phosphorous water-based polyurethane curing agent of preparation and hydroxy polyacrylate lotion (hydroxyl value=82mgKOH/g), press
NCO/OH molar ratio is that 1.3:1 prepares 2K-WPU coating.Specific steps are as follows: weighing the phosphorous urethane cures of metering
Agent is put in dispersion bucket, and the defoaming agent (German Digao TEGO-810 aqueous defoamer) of 0.2wt%, the levelling of 0.2wt% is added
Agent (German Digao TEGO-450 levelling agent), the thickener (the thickener RM-8W of DOW company) of 0.6wt%, 2wt% film forming
Auxiliary agent (dipropylene glycol methyl ether/dipropylene=1:1), disperses 20min, then by hydroxyl polyacrylic acid under 700r/min
Ester lotion is added slowly thereto, and stirs 3min, and the solid content of tap water adjustment coating is stirred to 50-55% when necessary plus in right amount
It mixes uniformly, with 240 mesh filter-cloth filterings to get waterborne two-component polyurethane coating.
(4) performance of double-component waterborne polyurethane coating such as table 8:
Table 8
Embodiment 5
(1) preparation of phosphorous water-based polyurethane curing agent, the type and mass percent of each component raw material such as table 9:
Table 9
| Poly glycol monomethyl ether (MPEG 600) | 21.4 |
| Bis- (2- ethoxy) the aminomethy-lenephosphonic acids diethylesters (FRC-6) of N, N- | 1.2 |
| N, N- dimethylethanolamine | 0.64 |
| HDI trimer | 76.76 |
| It is total | 100 |
Preparation process: being added HDI trimer in a kettle, by N, bis- (2- ethoxy) the aminomethy-lenephosphonic acids diethyls of N-
Ester (FRC-6), poly glycol monomethyl ether are mixed into uniform solution, are added in reaction kettle under nitrogen protection, react at 40-90 DEG C
Neutralizer N is added until being cooled to 45 DEG C when system NCO content reaches theoretical value in 4-6h, and N- dimethylethanolamine keeps the temperature 30min,
It is cooled to room temperature to get phosphorous water-based polyurethane curing agent.
(2) performance of phosphorous polyurethane curing agent: viscosity (25 DEG C) 4340mPas, NCO% content 18.16%.
(3) preparation of double-component waterborne polyurethane coating:
By the phosphorous water-based polyurethane curing agent of preparation and hydroxy polyacrylate lotion (hydroxyl value=82mgKOH/g), press-
NCO/-OH molar ratio is that 1.3:1 prepares 2K-WPU coating.Specific steps are as follows: weighing the phosphorous urethane cures of metering
Agent is put in dispersion bucket, and the defoaming agent (German Digao TEGO-810 aqueous defoamer) of 0.2wt%, the levelling of 0.2wt% is added
Agent (German Digao TEGO-450 levelling agent), the thickener (the thickener RM-8W of DOW company) of 0.6wt%, 2wt% film forming
Auxiliary agent (dipropylene glycol methyl ether/dipropylene=1:1), disperses 20min, then by hydroxyl polyacrylic acid under 700r/min
Ester lotion is added slowly thereto, and stirs 3min, and the solid content of tap water adjustment coating is stirred to 50-55% when necessary plus in right amount
It mixes uniformly, with 240 mesh filter-cloth filterings to get waterborne two-component polyurethane coating.
(4) performance of double-component waterborne polyurethane coating such as table 10:
Table 10
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (10)
1. a kind of preparation method of phosphorous water-based polyurethane curing agent, it is characterised in that including following preparation step:
HDI trimer, di based compound and poly glycol monomethyl ether are added in reactor and are uniformly mixed, indifferent gas
It is reacted under atmosphere protection at 40~90 DEG C, is cooled to 45 DEG C after the reaction was completed and is neutralized hereinafter, neutralizer is added, is cooled to room temperature, i.e.,
Obtain phosphorous water-based polyurethane curing agent.
2. a kind of preparation method of phosphorous water-based polyurethane curing agent according to claim 1, it is characterised in that: described
The mass percentage that HDI trimer, di based compound and poly glycol monomethyl ether are added be HDI trimer 75%~
85%, di based compound 1%~10%, poly glycol monomethyl ether 12%~25%.
3. a kind of preparation method of phosphorous water-based polyurethane curing agent according to claim 1, it is characterised in that: described
Isocyanate group content is 21.7%~22.2% in HDI trimer, and 25 DEG C of viscosity are 2500~3250mPas.
4. a kind of preparation method of phosphorous water-based polyurethane curing agent according to claim 1, it is characterised in that: the hydroxyl
Base phosphoric acid based compound is phosphenylic acid pentaerythritol diester, N, and bis- (2- ethoxy) the aminomethy-lenephosphonic acids diethylesters of N- contain
At least one of phosphorus polyol E xolit OP550, phosphorous polyethers, phosphorous-containing polyester polyalcohol BY3009T.
5. a kind of preparation method of phosphorous water-based polyurethane curing agent according to claim 1, it is characterised in that: described poly-
The molecular weight of glycol monoethyl ether is 350~1000.
6. a kind of preparation method of phosphorous water-based polyurethane curing agent according to claim 1, it is characterised in that: described anti-
It is 5~8h between seasonable.
7. a kind of preparation method of phosphorous water-based polyurethane curing agent according to claim 1, it is characterised in that: the hydroxyl
The molar ratio of base phosphoric acid based compound and poly glycol monomethyl ether is (1.0~2.5): 1.
8. a kind of preparation method of phosphorous water-based polyurethane curing agent according to claim 1, it is characterised in that: in described
It is triethylamine, N-methylmorpholine, N, N- dimethyl ethylenimine, N, at least one of N- dimethylethanolamine with agent；Neutralizer
Additional amount and phosphate group molar ratio be (0.8~1.2): 1.
9. a kind of phosphorous water-based polyurethane curing agent, it is characterised in that: pass through method system according to any one of claims 1 to 8
It is standby to obtain；- NCO% the content of the phosphorous water-based polyurethane curing agent is 15%~19%, 25 DEG C of viscosity is 2000~
5500mPas, appearance colorless are transparent.
10. application of the phosphorous water-based polyurethane curing agent as claimed in claim 9 in waterborne two-component polyurethane coating, described
Applying step are as follows: be according to-NCO/-OH molar ratio by phosphorous water-based polyurethane curing agent and water-based hydroxyl resin (0.8~
1.8): 1 is compounded.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111234168A (en) * | 2020-03-05 | 2020-06-05 | 合肥安利聚氨酯新材料有限公司 | Nonionic neutralizer and preparation method thereof, waterborne polyurethane and preparation method and application thereof |
| CN111848923A (en) * | 2020-07-28 | 2020-10-30 | 湘江涂料科技有限公司 | Preparation method of water-based polyisocyanate curing agent |
| CN116948137A (en) * | 2023-06-30 | 2023-10-27 | 江苏米尔化工科技有限公司 | Preparation method of soft and hard segment flame-retardant waterborne polyurethane |
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| CN111848923A (en) * | 2020-07-28 | 2020-10-30 | 湘江涂料科技有限公司 | Preparation method of water-based polyisocyanate curing agent |
| CN116948137A (en) * | 2023-06-30 | 2023-10-27 | 江苏米尔化工科技有限公司 | Preparation method of soft and hard segment flame-retardant waterborne polyurethane |
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Application publication date: 20190628 |