PL356198A1 - Method of manufacture of urea hydroperoxide - Google Patents

Method of manufacture of urea hydroperoxide

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Publication number
PL356198A1
PL356198A1 PL02356198A PL35619802A PL356198A1 PL 356198 A1 PL356198 A1 PL 356198A1 PL 02356198 A PL02356198 A PL 02356198A PL 35619802 A PL35619802 A PL 35619802A PL 356198 A1 PL356198 A1 PL 356198A1
Authority
PL
Poland
Prior art keywords
urea
hydrogen peroxide
bleaching
hydroperoxide
weight
Prior art date
Application number
PL02356198A
Other languages
Polish (pl)
Other versions
PL196198B1 (en
Inventor
Tomasz Pajer
Wiesław Capała
Magdalena Michalska
Włodzimierz Ratajczak
Jolanta Wielicka
Anna Ptasiewicz-Malinowska
Tomasz Jędrych
Dariusz Minda
Bożena Kaniewska
Original Assignee
Zakłady Azotowe PUŁAWY Spółka Akcyjna
Instytut Chemii Przemysłowej im.Prof.Ignacego Mościckiego
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zakłady Azotowe PUŁAWY Spółka Akcyjna, Instytut Chemii Przemysłowej im.Prof.Ignacego Mościckiego filed Critical Zakłady Azotowe PUŁAWY Spółka Akcyjna
Priority to PL356198A priority Critical patent/PL196198B1/en
Publication of PL356198A1 publication Critical patent/PL356198A1/en
Publication of PL196198B1 publication Critical patent/PL196198B1/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Sposób wytwarzania wodoronadtlenku mocznika, przez reakcję addycji nadtlenku wodoru do mocznika, poprzez nanoszenie wodnego roztworu nadtlenku wodoru na ruchome złoże suchego sproszkowanego mocznika, polega na tym, że proces prowadzi się pod obniżonym ciśnieniem 1-15 kPa w temperaturze 15-65ºC przy stosunku molowym nadtlenku wodoru do mocznika od 0,8:1 do 1,2:1, przy czym reakcji addycji nadtlenku wodoru do mocznika towarzyszy odparowanie wody z mieszaniny reakcyjnej, zaś po zakończeniu syntezy produkt suszy się w temperaturze nie wyższej niż 60ºC do zawartości wody poniżej 2% wagowych, oraz że korzystnie wraz z mocznikiem do środowiska reakcji wprowadza się stabilizator w postaci sproszkowanej substancji stałej w ilości do 3% wagowych w stosunku do masy mocznika. Otrzymany sposobem według wynalazku wodoronadtlenek mocznika ze względu na swoje właściwości wybielające ma zastosowanie między innymi jako środek do rozjaśniania włosów, do wybielania włókien celulozowych i papieru, do odkażania i dezynfekcji włókien oraz wyrobów włókienniczych.The method of producing urea hydroperoxide by the addition reaction of hydrogen peroxide to urea, by applying an aqueous hydrogen peroxide solution to a moving bed of dry powdered urea, consists in the process being carried out under reduced pressure of 1-15 kPa at a temperature of 15-65ºC with a molar ratio of peroxide hydrogen to urea from 0.8:1 to 1.2:1, where the addition of hydrogen peroxide to urea is accompanied by the evaporation of water from the reaction mixture, and after the synthesis is completed, the product is dried at a temperature not higher than 60ºC to a water content below 2% and that preferably together with the urea, a stabilizer in the form of a powdered solid substance is introduced into the reaction medium in an amount of up to 3% by weight, based on the weight of the urea. The urea hydroperoxide obtained by the method according to the invention, due to its bleaching properties, is used, among others, as an agent for bleaching hair, for bleaching cellulose fibers and paper, for decontamination and disinfection of fibers and textile products.

PL356198A 2002-09-20 2002-09-20 Method of manufacture of urea hydroperoxide PL196198B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL356198A PL196198B1 (en) 2002-09-20 2002-09-20 Method of manufacture of urea hydroperoxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL356198A PL196198B1 (en) 2002-09-20 2002-09-20 Method of manufacture of urea hydroperoxide

Publications (2)

Publication Number Publication Date
PL356198A1 true PL356198A1 (en) 2004-03-22
PL196198B1 PL196198B1 (en) 2007-12-31

Family

ID=32090065

Family Applications (1)

Application Number Title Priority Date Filing Date
PL356198A PL196198B1 (en) 2002-09-20 2002-09-20 Method of manufacture of urea hydroperoxide

Country Status (1)

Country Link
PL (1) PL196198B1 (en)

Also Published As

Publication number Publication date
PL196198B1 (en) 2007-12-31

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