A cocondensed resin produced by cocondensing urea with a polyhydric phenol for the purpose of improving a urea resin in the resistances to water, weathering and boiling and workability.
The resin includes melamine resin mixed with urea resin.
The urea solution tank (23) stores the urea solution.
Electromagnetic radiation is propagated into the automotive urea solution in the urea tank.
The pump (24) draws the urea solution from the urea solution tank (23) and supplies the urea solution to the urea solution injection device (25).
A cross-linked urea-formaldehyde polymer matrix is formed by catalyzing, using a buffered acid as the catalyst, an aqueous mixture of a urea-formaldehyde concentrate, urea-formaldehyde resin, and powdered urea.
A urea quality diagnosis system capable of accurately diagnosing the quality of aqueous urea solution within a urea tank.
Said method for controlling the urea injection system enables accurate control of the urea injection pressure, reduces the deviation between the urea pressure and the target value of urea pressure.
Whether or not the interior of the urea water tank (20) has been replenished with urea water is judged by detecting opening/closing of a urea water replenishment port (40) of the urea water tank (20).
The urea fertilizer may contain additionally, an aqueous urea formaldehyde solution or mixture.
The invention relates to a method for urea production and to a urea production plant wherein ammonia emission in the final step of forming urea prills is reduced.
The urea water supply mechanism (200) is equipped with a heater that heats the urea water and a temperature sensor that detects the temperature of the urea water.
The invention also pertains to the urea particles obtainable by the process, to a urea plant, and to a method of modifying an existing urea plant.
The urea water tank (13) is positioned on the back side of the ladder (12), and stores urea water.
The first pipe (31) connects the urea solution tank (23) and the pump (24), and supplies the urea solution from the urea solution tank (23) to the pump (24).
Urea and ammonium nitrate solutions
The invention relates to organopolysiloxane-urea copolymers, a process for preparing the organopolysiloxane-urea copolymers, compositions containing the organopolysiloxane-urea copolymers and their production.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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