HUT59966A - Poison-free blue chromating process
- Google Patents
Poison-free blue chromating process
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Publication number
HUT59966A
HUT59966AHU630490AHU630490AHUT59966AHU T59966 AHUT59966 AHU T59966AHU 630490 AHU630490 AHU 630490AHU 630490 AHU630490 AHU 630490AHU T59966 AHUT59966 AHU T59966A
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Application filed by Bela Hamarics, Istvanne GyoerifiledCriticalBela Hamarics
Priority to HU630490ApriorityCriticalpatent/HUT59966A/en
Publication of HU906304D0publicationCriticalpatent/HU906304D0/en
Publication of HUT59966ApublicationCriticalpatent/HUT59966A/en
An aqueous soln. of a chromium hexa-hydrate compound is heated to 50-90 deg.C for 15-75 min. producing a compound of general formula (Cr/III(CH2O)sHXO4)XO4, where X = As, P, S, Cr. The product is diluted, pH is adjusted to 1.2-2.5. The chromatisation is carried out at 20 - 40 deg.C and a pressure of 20-120 mP
HU630490A1990-10-021990-10-02Poison-free blue chromating process
HUT59966A
(en)
PROCESS FOR PRODUCING N--g(b)-HYDROXYALKYL-TRI-N-CARBOXYALKYL-1,4,7,10-TETRAAZACYCLODODECANE AND N--g(b)-HYDROXYALKYL-TRI-N-CARBOXYALKYL-1,4,8,11-TETRAAZACYCLOTETRADECANE DERIVATIVES AND THEIR METAL COMPLEXES.