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1. (WO1991017124) NEW FORMULATIONS FOR IRON OXIDES DISSOLUTION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/017124 International Application No.: PCT/US1991/002922
Publication Date: 14.11.1991 International Filing Date: 26.04.1991
Chapter 2 Demand Filed: 26.11.1991
IPC:
B09C 1/02 (2006.01) ,C11D 3/36 (2006.01) ,C23G 1/08 (2006.01) ,G21F 9/00 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
09
DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
C
RECLAMATION OF CONTAMINATED SOIL
1
Reclamation of contaminated soil
02
Extraction using liquids, e.g. washing, leaching
C CHEMISTRY; METALLURGY
11
ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
D
DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
3
Other compounding ingredients of detergent compositions covered in group C11D1/101
16
Organic compounds
36
containing phosphorus
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
G
CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
1
Cleaning or pickling metallic material with solutions or molten salts
02
with acid solutions
08
Iron or steel
G PHYSICS
21
NUCLEAR PHYSICS; NUCLEAR ENGINEERING
F
PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
9
Treating radioactively contaminated material; Decontamination arrangements therefor
Applicants:
ARCH DEVELOPMENT CORPORATION [US/US]; 1101 East 58th Street Chicago, IL 60637, US
Inventors:
HORWITZ, Earl, Philip; US
CHIARIZIA, Renato; US
Agent:
CHICK, Marshall, J.; Frishauf, Holtz, Goodman & Woodward 600 Third Avenue, 30th Floor New York, NY 10016-2088, US
Priority Data:
516,43630.04.1990US
Title (EN) NEW FORMULATIONS FOR IRON OXIDES DISSOLUTION
(FR) NOUVELLES FORMULATIONS DE DISSOLUTION D'OXYDES DE FER
Abstract:
(EN) A mixture of a di- or polyphosphonic acid and a reductant wherein each is present in a sufficient amount to provide a synergistic effect with respect to the dissolution of metal oxides and optionally containing corrosion inhibitors and pH adjusting agents.
(FR) Mélange d'un acide diphosphonique ou polyphosphonique et d'un agent de réduction, dans lequel chacun est présent en une quantité suffisante pour produire un effet synergique par rapport à la dissolution d'oxydes de métal, et contenant facultativement des inhibiteurs de corrosion ainsi que des agents d'ajustement du pH.
Designated States: CA, JP, SU
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0527908RU02096499JP3014448JPH05507305CA2081767