CN108373486A - O-phenylenediamine phosphoryl melamine flame retardants and preparation method thereof - Google Patents
O-phenylenediamine phosphoryl melamine flame retardants and preparation method thereof Download PDFInfo
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- CN108373486A CN108373486A CN201810331579.8A CN201810331579A CN108373486A CN 108373486 A CN108373486 A CN 108373486A CN 201810331579 A CN201810331579 A CN 201810331579A CN 108373486 A CN108373486 A CN 108373486A
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- Prior art keywords
- phenylenediamine
- melamine
- phosphorus oxychloride
- phosphoryl
- flame retardants
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/6564—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms
- C07F9/6581—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and nitrogen atoms with or without oxygen or sulfur atoms, as ring hetero atoms
- C07F9/6584—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and nitrogen atoms with or without oxygen or sulfur atoms, as ring hetero atoms having one phosphorus atom as ring hetero atom
- C07F9/65848—Cyclic amide derivatives of acids of phosphorus, in which two nitrogen atoms belong to the ring
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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
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/5399—Phosphorus bound to nitrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Abstract
The invention discloses o-phenylenediamine phosphoryl melamine flame retardants and preparation method thereof.O-phenylenediamine is dissolved in anhydrous methylene chloride, phosphorus oxychloride is slowly added dropwise under inert gas protection, dropping temperature is 0~20 DEG C, and 1~2h drops finish；60~70 DEG C of 3~5h of reaction are warming up to, filters, washs after completion of the reaction, recrystallization obtains pink solid after drying to constant weight, obtains intermediate o-phenylenediamine phosphoryl chloride phosphorus oxychloride；Gained o-phenylenediamine phosphoryl chloride phosphorus oxychloride, melamine, acid binding agent and solvent are sufficiently mixed, inert gas shielding, and for 24 hours, reaction finishes for 50 100 DEG C of reactions 6；Filtering, washing, takes filter cake to recrystallize, and yellow crystals are obtained after drying to constant weight, is target product.The temperature of initial decomposition of the fire retardant of the present invention is 350 DEG C, has preferable thermal stability, can melt and be blended with most of high molecular material, and compatibility is good, while is not soluble in water, there is good resistance to migration in the material.
Description
Technical field
The invention belongs to halogen-free flame retardants technical fields, and in particular to a kind of o-phenylenediamine phosphoryl melamine flame retardants
And preparation method thereof.
Background technology
Expansion type flame retardant (IFR) be a kind of nitrogen, phosphorus collaboration Halogenless composite fire retardant, with metal hydroxides, red phosphorus
The halogen-free flame retardants common with organic silicon fibre retardant etc. is compared, and IFR has many advantages, such as efficient, anti-dropping and low-smoke low-toxicity, is most
One of halogen-free flame retardants of with prospects.IFR is usually made of acid source, charcoal source and air source, when material heated combustion, acid source
Esterification and crosslinking quickly occurs with charcoal source to react to form melting layer of charcoal；The air source release non-flammable compressive gases such as nitrogen and vapor make melting charcoal
Foaming and intumescing；The synergistic effect in three sources to form dense porous foamed char, trap heat and oxygen in material surface, from
And achieve the purpose that prevent material combustion and decomposition.
Melamine (MA) inherently can be used as a kind of fire retardant use, itself is non-combustible, less toxic, by thermogenetic nitrogen
The non-flammable compressive gases such as gas and water steam can reach fire-retardant purpose；But MA itself is there are the disadvantages such as certain water solubility, phosphorus content be low,
Its flame retardant effect in the material is set to be not very ideal.Melamine based flame retardant is to introduce other on melamine basis
Fire-retardant group makes flame retardant molecule while having a kind of expansion type flame retardant of acid source, charcoal source and air source；The based flame retardant passes through
The synergistic effect of melamine and other fire-retardant groups, reducing, itself is water-soluble while also improving compatible with material
Property and carbon left；When the based flame retardant is heated, melamine can generate the non-flammable compressive gases such as abundant nitrogen, vapor as air source
And act synergistically to form abundant foamed char with acid source, charcoal source, to reach heat-insulated, oxygen barrier and suppression cigarette fire-retardant purpose.Three
Poly cyanamid based flameproofing flame retarding efficiency is high, and additive amount is few, the nontoxic low cigarette of combustion process, and it is environmentally protective efficiently to meet current fire retardant
Requirement.
Patent application publication CN105348505A, Wang Xi is weak etc. to disclose a kind of o-diaminobenzene phosphorylchloride condensed 3- of poly- carbonic acid
The preparation method of butene-1-amide, divides three-step reaction：O-phenylenediamine phosphoryl chloride phosphorus oxychloride carries out acyl chloride reaction with 3- butene-1s-amine, into
One step epoxidation reaction obtains o-diaminobenzene phosphorylchloride condensed 3- epoxidations butane -1- amides, finally under the action of catalyst with two
Product is obtained by the reaction in 20~60 atmospheric polymerizations of carbonoxide autoclave, and involved synthesis technology is complicated and wants high pressure, no
Easily industrialization, though there is a large amount of charcoal source to be a lack of air source in product, flame retardant property in the material is less desirable.
Patent application publication CN101638421A, summer meet pine etc. and disclose a kind of o-diaminobenzene phosphorylchloride condensed pentaerythritol
The preparation method of ester, only charcoal source and acid source can not form expansion charcoal knot in combustion without air source in products obtained therefrom
Structure, this causes the flame retardant property of product to decline so that product is excessive in the additive amount of material, and in the system of o-phenylenediamine phosphoryl chloride phosphorus oxychloride
The acid binding agent that feeds and use under the conditions of 0 DEG C is needed during standby, process conditions are complicated, and product removal of impurities is difficult, and yield is not high.
Invention content
Present invention aims at a kind of new flame retardant of offer and preparation method thereof, the fire retardant is efficient, adds
Amount less, environmentally protective and preparation method it is simple.
In order to achieve the above objectives, as follows using technical solution：
O-phenylenediamine phosphoryl melamine flame retardants, have following structure formula：
The preparation method of above-mentioned o-phenylenediamine phosphoryl melamine flame retardants, includes the following steps：
1) prepared by o-phenylenediamine phosphoryl chloride phosphorus oxychloride：
O-phenylenediamine is dissolved in anhydrous methylene chloride, phosphorus oxychloride is slowly added dropwise under inert gas protection, temperature is added dropwise
Degree is 0~20 DEG C, and 1~2h drops finish；60~70 DEG C of 3~5h of reaction are warming up to, filters, washs after completion of the reaction, recrystallize, it is dry
Pink solid is obtained after to constant weight, obtains intermediate o-phenylenediamine phosphoryl chloride phosphorus oxychloride；
2) prepared by o-phenylenediamine phosphoryl melamine：
Gained o-phenylenediamine phosphoryl chloride phosphorus oxychloride, melamine, acid binding agent and solvent are sufficiently mixed, inert gas shielding, 50-100
DEG C reaction 6-24h, reaction finishes；Filtering, washing, takes filter cake to recrystallize, and yellow crystals are obtained after drying to constant weight, is produced for target
Object o-phenylenediamine phosphoryl melamine.
By said program, o-phenylenediamine is 1 with the molar ratio of reacting of phosphorus oxychloride in step 1:(1~1.5).
By said program, it is 1 that the o-phenylenediamine phosphoryl chloride phosphorus oxychloride described in step 2, which reacts molar ratio with melamine,:(1~3)
By said program, solvent described in step 2 is dichloroethanes, Isosorbide-5-Nitrae-dioxane, acetonitrile, tetrahydrofuran, N,
One or any mixing in dinethylformamide.
By said program, the acid binding agent described in step 2 is triethylamine, diethylamine, sodium hydroxide, potassium hydroxide, carbonic acid
One or any mixing in sodium, potassium carbonate, pyridine.
By said program, the inert gas is nitrogen, one kind or mixed gas in helium.
The synthesis path of o-phenylenediamine phosphoryl melamine of the present invention is as follows：
The advantageous effect of the present invention：
The present invention relates to a kind of nitrogen phosphorus to cooperate with halogen-free expansion fire retardant o-phenylenediamine phosphoryl melamine, and advantage is such as
Under：
(1) fire retardant of the invention has additive amount few compared with conventional halogen fire retardant, and flame retarding efficiency is high, low cigarette without
Poison, it is environmentally protective the advantages that；
(2) contain abundant carbon source, acid source and air source in flame retardant molecule of the invention, when burning can give full play to fire-retardant
Synergistic effect forms abundant expansion carbon structure between agent each component, and heat-insulated oxygen barrier suppression cigarette has excellent flame retardant property；
(3) temperature of initial decomposition of fire retardant of the invention is 350 DEG C, has preferable thermal stability, can with it is big
Part high molecular material melts blending, and compatibility is good, while not soluble in water, there is good resistance to migration in the material；
(4) raw material of the invention is cheap and easy to get, and synthesis technology is simple, high conversion rate, solvent recoverable, is conducive to realize
Industrialized production.
Description of the drawings
Fig. 1：The Fourier transform infrared spectrogram of 1 product of embodiment.
Specific implementation mode
Following embodiment further illustrates technical scheme of the present invention, but not as the limitation to this programme protection domain.
Embodiment 1
1) equipped with reflux condensing tube, thermometer, constant pressure funnel, nitrogen protection, heated at constant temperature magnetic stirring apparatus
250ml four-hole boiling flasks in 0.05mol o-phenylenediamines and 30ml dichloromethane is added, be sufficiently stirred dissolving, it is normal under nitrogen protection
The mixed solution of 0.05mol phosphorus oxychloride and 10ml dichloromethane is slowly added dropwise in temperature, and sodium hydroxide is used in combination in 65 DEG C of back flow reaction 4h
The hydrogen chloride gas that solution absorbing reaction generates, up to no gas generates, reaction, which finishes, filters to obtain filter cake, filter cake dichloromethane
Washing, recrystallization, 65 DEG C be dried under vacuum to after constant weight for o-phenylenediamine phosphoryl chloride phosphorus oxychloride solid.
2) in the 250ml tetra- equipped with reflux condensing tube, thermometer, constant pressure funnel, heated at constant temperature magnetic stirring apparatus
0.05mol o-phenylenediamines phosphoryl chloride phosphorus oxychloride, 0.05mol melamines and 0.05mol triethylamines is added in mouth flask, 80ml acetonitriles are added
95 DEG C of back flow reaction 6h, after completion of the reaction crystallisation by cooling obtain white suspension, filter, distill water washing after recrystallize, 90 DEG C
It is dried under vacuum to constant weight, obtains o-phenylenediamine phosphoryl melamine yellow color solid.
Fig. 1 is the Fourier transform infrared spectrogram of the present embodiment product, 3470,1553cm-1Strong peak is two level amide
N-H stretching vibration absworption peaks；3418cm-1Place is aromatic secondary amine N-H stretching vibration absworption peaks；3337、3112cm-1It is bimodal to be
- NH in molecule on melamine skeleton2N-H stretching vibration absworption peaks,；1668cm-1The strong peak at place is-NH and phenyl ring skeleton
The strong vibration absorption peak of overlapping；1518、1470、1430cm-1It is phenyl ring skeleton stretching vibration absworption peak；775cm-1It is phenyl ring neighbour
Position substitution characteristic absorption peak；1327cm-1It is the characteristic absorption peak of P=O keys.To spectral peak analysis shows having obtained target product
O-phenylenediamine phosphoryl melamine.
Embodiment 2
Solvent is changed to dichloroethanes in the present embodiment step 2, other consistent with embodiment 1.
Embodiment 3
Solvent is changed to Isosorbide-5-Nitrae-dioxane in the present embodiment step 2, other to be caused with embodiment 1.
Embodiment 4
Solvent is changed to n,N-Dimethylformamide in the present embodiment step 2, other consistent with embodiment 1.
Embodiment 5
Solvent is changed to tetrahydrofuran in the present embodiment step 2, other consistent with embodiment 1.
Embodiment 6
O-phenylenediamine phosphoryl melamine obtained in embodiment 1 is added in polypropylene (PP) material, is carried out
Oxygen index (OI) and vertical combustion level estimate.Flame retardant products and polypropylene are uniformly mixed into (fire retardant mass content：3%~
15%) double screw extruder granulation is added to after, dry injection molding press strip (survey by 1993 plastics oxygen index (OI)s of GB/T2406-after granulation
Examination, specimen size 125mm × 12.5mm × 3.0mm；2008 plastics vertical combustions of GB/T2408-(UL94 standards) are tested, sample
Size:125mm × 12.5mm × 3.2mm), it carries out oxygen index (OI) and vertical burn test, test result is as shown in table 1.
Table 1
Comparative example
It will be according to the poly- carbonic acid o-phenylenediamine phosphinylidyne prepared by the synthesis technology of patent CN101638421A specific embodiments
Chlorine contracting 3- butene-1s-amide is added in polypropylene (PP) material, carries out oxygen index (OI) and vertical combustion level estimate, test method
It is same with standard
Embodiment 5, test result is as shown in table 2.
Table 2
It can be found that flame retardant property of the flame retardant products of the present invention in polypropylene is bright by comparing two groups of test datas
Aobvious to be got well than the product in comparative example, the test result of the embodiment of the present invention 6 shows fire retardant mass content at 9% just
Reach V-0 grades, limit oxygen index reaches 29.8%, illustrates that flame retardant property is good；And the fire retardant additive amount 15% in comparative example
When, limit oxygen index just only has 26.4%, and flame retardant effect is compared to poor.
Claims (7)
1. o-phenylenediamine phosphoryl melamine flame retardants, it is characterised in that have following structure formula：
2. the preparation method of o-phenylenediamine phosphoryl melamine flame retardants described in claim 1, it is characterised in that including following
Step：
1) prepared by o-phenylenediamine phosphoryl chloride phosphorus oxychloride：
O-phenylenediamine is dissolved in anhydrous methylene chloride, phosphorus oxychloride, dropping temperature 0 are slowly added dropwise under inert gas protection
~20 DEG C, 1~2h drops finish；60~70 DEG C of 3~5h of reaction are warming up to, filters, washs after completion of the reaction, recrystallization is dry to perseverance
Pink solid is obtained after weight, obtains intermediate o-phenylenediamine phosphoryl chloride phosphorus oxychloride；
2) prepared by o-phenylenediamine phosphoryl melamine：
Gained o-phenylenediamine phosphoryl chloride phosphorus oxychloride, melamine, acid binding agent and solvent are sufficiently mixed, inert gas shielding, and 50-100 DEG C anti-
6-24h, reaction is answered to finish；Filtering, washing, takes filter cake to recrystallize, and yellow crystals are obtained after drying to constant weight, is that target product is adjacent
Phenylenediamine phosphoryl melamine.
3. the preparation method of o-phenylenediamine phosphoryl melamine flame retardants as claimed in claim 2, it is characterised in that in step 1
O-phenylenediamine is 1 with the molar ratio of reacting of phosphorus oxychloride:(1~1.5).
4. the preparation method of o-phenylenediamine phosphoryl melamine flame retardants as claimed in claim 2, it is characterised in that in step 2
It is 1 that the o-phenylenediamine phosphoryl chloride phosphorus oxychloride, which reacts molar ratio with melamine,:(1~3).
5. the preparation method of o-phenylenediamine phosphoryl melamine flame retardants as claimed in claim 2, it is characterised in that in step 2
The solvent be dichloroethanes, 1,4- dioxane, acetonitrile, tetrahydrofuran, one kind in N,N-dimethylformamide or
Arbitrary mixing.
6. the preparation method of o-phenylenediamine phosphoryl melamine flame retardants as claimed in claim 2, it is characterised in that in step 2
The acid binding agent be triethylamine, diethylamine, sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, one kind in pyridine or
Arbitrary mixing.
7. the preparation method of o-phenylenediamine phosphoryl melamine flame retardants as claimed in claim 2, it is characterised in that described lazy
Property gas be nitrogen, one kind or mixed gas in helium.
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| CN201810331579.8A CN108373486B (en) | 2018-04-13 | 2018-04-13 | O-phenylenediamine phosphoryl melamine flame retardant and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114806018A (en) * | 2022-05-20 | 2022-07-29 | 界首市亚鑫塑业科技有限公司 | Anti-yellowing polypropylene plastic and preparation method thereof |
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| CN101638421A (en) * | 2009-08-25 | 2010-02-03 | 安徽中鼎密封件股份有限公司 | Preparation method of o-diaminobenzene phosphorylchloride condensed pentaerythritol ester |
| CN102190814A (en) * | 2011-03-25 | 2011-09-21 | 武汉工程大学 | Hexaphenyl phosphate ester melamine salt fire retardant and method for preparing same |
| CN105348505A (en) * | 2015-10-15 | 2016-02-24 | 安徽星鑫化工科技有限公司 | Preparation method for o-diaminobenzene phosphoryl chloride 3-butylene-1-amide polycarbonate |
| CN105713233A (en) * | 2016-03-31 | 2016-06-29 | 中北大学 | Sulfonate flame retardant with high nitrogen and phosphorus content, preparation method and application |
| CN106905366A (en) * | 2017-02-20 | 2017-06-30 | 黑龙江大学 | Triazines exciplex material based on phosphine oxygen and its preparation method and application |
| CN106916188A (en) * | 2017-03-20 | 2017-07-04 | 湖北大学 | 2,4,6 3 (the dimethyl phosphate base amido) melamine salts of 1,3,5 triazine three and preparation and application |
-
2018
- 2018-04-13 CN CN201810331579.8A patent/CN108373486B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638421A (en) * | 2009-08-25 | 2010-02-03 | 安徽中鼎密封件股份有限公司 | Preparation method of o-diaminobenzene phosphorylchloride condensed pentaerythritol ester |
| CN102190814A (en) * | 2011-03-25 | 2011-09-21 | 武汉工程大学 | Hexaphenyl phosphate ester melamine salt fire retardant and method for preparing same |
| CN105348505A (en) * | 2015-10-15 | 2016-02-24 | 安徽星鑫化工科技有限公司 | Preparation method for o-diaminobenzene phosphoryl chloride 3-butylene-1-amide polycarbonate |
| CN105713233A (en) * | 2016-03-31 | 2016-06-29 | 中北大学 | Sulfonate flame retardant with high nitrogen and phosphorus content, preparation method and application |
| CN106905366A (en) * | 2017-02-20 | 2017-06-30 | 黑龙江大学 | Triazines exciplex material based on phosphine oxygen and its preparation method and application |
| CN106916188A (en) * | 2017-03-20 | 2017-07-04 | 湖北大学 | 2,4,6 3 (the dimethyl phosphate base amido) melamine salts of 1,3,5 triazine three and preparation and application |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114806018A (en) * | 2022-05-20 | 2022-07-29 | 界首市亚鑫塑业科技有限公司 | Anti-yellowing polypropylene plastic and preparation method thereof |
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