Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO1979000835) DEHALOGENATION OF HALOGENATED COMPOUNDS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1979/000835 International Application No.: PCT/US1978/000215
Publication Date: 18.10.1979 International Filing Date: 15.12.1978
IPC:
A62D 3/00 (2007.01) ,B01J 19/12 (2006.01) ,C07C 1/26 (2006.01) ,C07C 45/65 (2006.01) ,C07C 51/377 (2006.01)
A HUMAN NECESSITIES
62
LIFE-SAVING; FIRE-FIGHTING
D
CHEMICAL MEANS FOR EXTINGUISHING FIRES; PROCESSES FOR MAKING HARMFUL CHEMICAL SUBSTANCES HARMLESS, OR LESS HARMFUL, BY EFFECTING A CHEMICAL CHANGE; COMPOSITION OF MATERIALS FOR COVERINGS OR CLOTHING FOR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; COMPOSITION OF MATERIALS FOR TRANSPARENT PARTS OF GAS-MASKS, RESPIRATORS, BREATHING BAGS OR HELMETS; COMPOSITION OF CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
3
Processes for making harmful chemical substances harmless, or less harmful, by effecting a chemical change in the substances
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
19
Chemical, physical, or physico-chemical processes in general; Their relevant apparatus
08
Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
12
employing electromagnetic waves
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
1
Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
26
starting from organic compounds containing only halogen atoms as hetero atoms
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
45
Preparation of compounds having CO groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
61
by reactions not involving the formation of CO groups
65
by splitting-off hydrogen atoms or functional groups; by hydrogenolysis of functional groups
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
51
Preparation of carboxylic acids or their salts, halides, or anhydrides
347
by reactions not involving formation of carboxyl groups
377
by splitting-off hydrogen or functional groups; by hydrogenolysis of functional groups
Applicants:
Inventors:
Priority Data:
89087127.03.1978US
Title (EN) DEHALOGENATION OF HALOGENATED COMPOUNDS
(FR) DESHALOGENATION DE COMPOSES HALOGENE
Abstract:
(EN) Chemical process for degrading halogenated organic compound having at least one C-halogen group and preferably a plurality of such groups to remove halogen atoms from said compound by treating it with ultra-violet (UV) radiation (2) and hydrogen (6) preferably, though not necessarily in alkaline liquid solution. Process for degrading such compound which is capable of forming alkali metal salts by treating it in aqueous alkaline solution with UV radiation (2). The process can be used generally as a means for dehalogenation and is particularly useful in the treatment of contaminated effluent wastes from manufacturing processes or from contaminated water, soil, sludges or other wastes already present in the environment. An example of a compound effectively treated by the processes of the invention is kepone, decachloropentacyclo (5.3.0.02,6.03,9.04,8) decan-5-one.
(FR) Procede chimique de degradation d"un compose organique halogene ayant au moins un groupe C-halogene et de preference une pluralite de tels groupes pour enlever les atomes d"halogenes dudit compose en le traitant avec des rayons (2) ultraviolets (UV) et de l"hydrogene (6), de preference dans une solution liquide alcaline bien que ce ne soit pas necessaire. procede de degradation d"un tel compose qui est capable de former des sels metalliques alcalins en le traitant dans une solution aqueuse alcaline avec des rayons (2) ultraviolets. Le procede peut etre utilise d"une facon generale pour la deshalogenation et il est particulierement utile pour le traitement des dechets des eaux residuaires industrielles polluees ou d"eaux, sols, boues contamines ou d"autres dechets deja presents dans l"environnement. Un exemple d"un compose traite efficacement par le procede de l"invention est le kepone, decachloropentacyclo (5.3.0.02, 6. 9.04, 8) decan-5-one.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)