Method of producing ammonium phosphate stable to hydrolysis

专利摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung eines hydrolysestabilen, teilchenförmigen Mittels auf der Basis von freifließendem, pulverförmigem Ammoniumpolyphosphat durch Behandlung des Ammoniumpolyphosphates mit einem wärmehärtbaren und in gehärtetem Zustand wasserunlöslichen Kunstharz, welches dadurch gekennzeichnet ist, daß man das Ammoniumpolyphosphat, einen aliphatischen Alkohol als Verdünnungsmittel sowie ein Melamin/Formaldehyd-Harz oder Phenol/Formaidehyd-Harz, in einem Druckgefäß vorlegt und bei Raumtemperature innig vermischt; daß man das Gemisch auf eine Temperatur von etwa 80° bis etwa 180°C erhitzt und bei dieserTemperatur und dem dem Dampfdruck des Verdünnungsmittels entsprechenden Druck während 15 bis 240 Minuten beläßt; und daß man das Verdünnungsmittel abtrennt und das erhaltene Produkt trocknet.
公开号:SU1333228A3
申请号:SU843736505
申请日:1984-05-05
公开日:1987-08-23
发明作者:Элснер Георг；Штендеке Хорст；Хеймер Геро
申请人:Хехст Аг (Фирма)；
IPC主号:

专利说明:

113
The invention relates to a process for the production of ammonium polyphosphate that is resistant to hydrolysis and can be used in the field of the production of additives for imparting fire resistance to polyurethanes or polyurethane foams, as well as to materials containing cellulose, various grades of paper, cardboard and the like. P .
The purpose of the invention is to increase the resistance to hydrolysis at 60 ° C of ammonium polyphosphate (PFA).
PRI me R 1. PFA, methanol and



melamine formaldehyde resin in the ratio, respectively, 1; 1,5: 0,1; for which 200 l (158.3 kg) of methanol were loaded, 100 kg of polyphosComparative results of the known and proposed methods are given in Table 2
As can be seen from the data of Tables 1 and 2, the goal is achieved when processing PFA with resins in the medium of ammonium methanofate and 10 kg of melamine formal-20 la with their weight ratio of 1: 1.5:
: 0.1 at 80-180 ° C for 0.25-4 hours and conducting the process under pressure in a closed volume.

权利要求:
Claims (1)
[1]
25 claims
the resin was stirred at room temperature to form a suspension. Then the mixer was closed and the contents were heated to 120 ° C. In this case, a pressure of about 6 atm was established in the tank. The contents of the reactor were kept at this temperature for one hour, then cooled, ate and unloaded onto a suction filter. Methanol was aspirated and collected for reuse. The coated PFA was dried by purging with a stream of heated nitrogen. The dry product had a weight of about 208 kg. Properties of the product are given in table.1.
PRI me R 2 .. 100 kg of ammonium polyphosphate were mixed into a suspension in 200 l (158.3 kg) of methanol in a mixer. Then a solution of 10 kg of melamine formaldehyde resin in 10 kg of warm water (40 ° C) was added. After that, the mixer was closed, the temperature was raised to 120 ° C and at this temperature, the contents were held for one hour.
Further activities were carried out analogously to example 1. Exit
thirty
35
40 j
45
The method of obtaining hydrolysis resistant to ammonium polyphosphate of the General formula
Hc ,, - n,). 2 (NH4) n, PnO, nM,
where P 2P-800,
,
comprising treating ammonium polyphosphate with melanin-formaldehyde resin in methanol at elevated temperature followed by cooling the reaction mixture, separating methanol and drying the product, characterized in that, in order to increase the stability of the product to hydrolysis at 60 ° C, the ammonium polyphosphate is processed at a mass ratio of polyphosphate ammonium, methanol and melamine-formaldehyde resin, respectively, equal to 1: 1.5: 0.1, in a closed volume and at 80-180 C for 0.25-4.00 h.
technological product was 10 kg. Product properties are listed in Table 1.
Example 100 kg of ammonium polyphosphate were mixed in suspension in a mixture of water and methanol, consisting of 36 l of water and 164 l of methanol, in a mixer. At the same time, 10 kg of solid melamine formaldehyde resin was added. Further technological operations were carried out analogously to example 1. The properties of the product are listed in Table 1.
Comparative results of the known and proposed methods are given in Table 2.
As can be seen from the data of Tables 1 and 2, the goal is achieved when processing PFA resins in a methane medium
five
0 j
five
The method of obtaining hydrolysis resistant to ammonium polyphosphate of the General formula
Hc ,, - n,). 2 (NH4) n, PnO, nM,
where P 2P-800,
,
comprising treating ammonium polyphosphate with melanin-formaldehyde resin in methanol at elevated temperature followed by cooling the reaction mixture, separating methanol and drying the product, characterized in that, in order to increase the stability of the product to hydrolysis at 60 ° C, the ammonium polyphosphate is processed at a mass ratio of polyphosphate ammonium, methanol and melamine-formaldehyde resin, respectively, equal to 1: 1.5: 0.1, in a closed volume and at 80-180 C for 0.25-4.00 h.
Table 1
96%: 75 microns 98% -s 75 microns 99% microns 99% -; 45 mm 99% i150 microns 99% 150 microns 96% 150 microns 98% 150 microns 97% microns 9 9% -i150 microns 99% 150 microns 99% 150 microns
13
180
0.5 19.2 98.2
All examples were carried out with respect to ammonium polyphosphate, methanol and melamine-formaldehyde resin, wt.%, Respectively, 1: 1.5: 0.1 (by the known method 1: 4: 0.05).
Editor V.Danko
Compiled by G. Mitropolska Tehred L. Serdyukova
Order 3853/58 Circulation 455 Subscription
VNIIPI USSR State Committee
for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
Production and printing company, Uzhgorod, Projecto st., 4
1333228
6 Continuation of table 2
0.15
0.4
99% 150 microns
Corrector N. King

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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DE3316880A|DE3316880C2|1983-05-07|1983-05-07|

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