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1. WO1996003644 - DETERMINING BIODEGRADABILITY OF ASPARTIC ACID DERIVATIVES, DEGRADABLE CHELANTS, USES AND COMPOSITIONS THEREOF

Publication Number WO/1996/003644
Publication Date 08.02.1996
International Application No. PCT/US1995/008809
International Filing Date 14.07.1995
Chapter 2 Demand Filed 12.01.1996
IPC
G01N 33/00 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
G01N 33/48 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
48Biological material, e.g. blood, urine; Haemocytometers
CPC
G01N 2033/243
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
24Earth materials
243for determining biological parameters concerning composting, biodegradability or bioavailability
G01N 33/48
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
48Biological material, e.g. blood, urine
Y10S 423/17
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
423Chemistry of inorganic compounds
09Reaction techniques
17Microbiological reactions
Applicants
  • THE DOW CHEMICAL COMPANY [US/US]; 2030 Dow Center Abbott Road Midland, MI 48640, US (AllExceptUS)
  • STRICKLAND, Alan, D. [US/US]; US (UsOnly)
Inventors
  • STRICKLAND, Alan, D.; US
Agents
  • ULMER, Duane, C.; The Dow Chemical Company Patent Dept. 2301 Brazosport Boulevard, B 1211 Freeport, TX 77541, US
Priority Data
08/281,06027.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DETERMINING BIODEGRADABILITY OF ASPARTIC ACID DERIVATIVES, DEGRADABLE CHELANTS, USES AND COMPOSITIONS THEREOF
(FR) DETERMINATION DE LA BIODEGRADABILITE DE DERIVES D'ACIDE ASPARTIQUE, CHELATES DEGRADABLES ET LEURS UTILISATIONS ET COMPOSITIONS
Abstract
(EN)
Chelants represented by formula (Ib) are determined to be biodegradable when Distance A is from 3.8 x 10-10 to 4.6 x 10-10m, Distance B is from 5.1 x 10-10 to 5.9 x 10-10m, and Distance C is from 4.3 to 6.7 x 10-10m. Compounds meeting these criteria are referred to as compounds of Formula 2. In addition to methods of analysis and computer systems therefor, the invention includes a method of chelating a metal ion to form a chelate and biodegrading the chelate comprising step (a) contacting the metal ion with at least one compound of Formula 2 to form a chelate and (b) contacting the resultant chelate or chelant with microbes of the type specified in ASTM 2667-89, ISO 5815 or effective enzymes thereof under conditions and for a time sufficient for biodegradation wherein either (i) the chelate formed in step (a) is formed in a process of removing deposits, scale, or rust; cleaning or washing; controlling metal initiated or catalyzed oxidation or deterioration including spoilage, discoloration, or rancidification; textile treatment; paper making; stabilization of polymers or phosphates; or petroleum drilling, production or recovery; or (ii) the chelate formed in step (a) is before step (b) used as a redox catalyst, in a process of photographic bleaching, bleach-fixing or developing; in electroless deposition or plating; in removing acid or oxide gases including H2S, NOx, SOx, CO and CO2; or in providing agricultural nutrients.
(FR)
Des chélates représentés par la formule (Ib) sont jugés biodégradables quand une distance A varie entre 3,8 x 10-10 et 4,6 x 10-10m, une distance B varie entre 5,1 x 10-10 et 5,9 x 10-10m, et une distance C varie entre 4,3 et 6,7 x 10-10m. Des composés correspondant à ces critères sont qualifiés de composés de formule 2. Outre des procédés d'analyse et des systèmes informatiques nécessaires, l'invention concerne un procédé permettant la chélation d'un ion métal pour former un chélate et la biodégradation de ce chélate. Ce procédé consiste a) à mettre l'ion métal en contact avec au moins un composé de formule 2 pour former un chélate et b) à mettre le chélate résultant en contact avec des microbes du type précisé dans ASTM 2667-89 ou ISO 5815 ou avec leurs enzymes efficaces, dans des conditions et pendant une durée suffisante pour une biodégradation, de façon que 1) le chélate formé à l'étape a) le soit dans le cadre d'un processus d'élimination de dépôts, de tartre, ou de rouille; de nettoyage ou de lavage; de lutte contre une oxydation ou une détérioration commencée ou catalysée par un métal, y compris une dégradation, une décoloration ou un rancissement; dans un traitement pour textiles; la fabrication du papier; la stabilisation de polymères ou de phosphates; ou le forage, la production ou la récupération concernant le pétrole; ou bien de façon que 2) le chélate formé à l'étape a) soit utilisé avant l'étape b) comme catalyseur d'oxydo-réduction; dans un processus de blanchiment, blanchiment-fixage ou développement photographique; dans les dépôts ou placages chimiques; dans l'élimination de gaz contenant des acides ou des oxydes, y compris H2S, NOx, SOx, CO et CO2; ou dans l'obtention de substances nutritives destinées à l'agriculture.
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