Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO1998053119) USE OF POLYMERS CONTAINING ASPARAGINIC ACID IN COMBINATION WITH HYDROXYCARBOXYLIC ACIDS OR POLYCARBOXYLIC ACIDS FOR INHIBITING CORROSION IN COOLING CIRCUITS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/053119 International Application No.: PCT/EP1998/002818
Publication Date: 26.11.1998 International Filing Date: 13.05.1998
Chapter 2 Demand Filed: 05.09.1998
IPC:
C08G 73/10 (2006.01) ,C23F 11/10 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
73
Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen or carbon, not provided for in groups C08G12/-C08G71/238
06
Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule; Polyhydrazides; Polyamide acids or similar polyimide precursors
10
Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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
F
NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACES; INHIBITING CORROSION OF METALLIC MATERIAL; INHIBITING INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25247
11
Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
08
in other liquids
10
using organic inhibitors
Applicants:
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN [DE/DE]; Henkelstrasse 67 D-40589 Düsseldorf, DE (AllExceptUS)
MAYER, Bernd [DE/DE]; DE (UsOnly)
HATER, Wolfgang [DE/DE]; DE (UsOnly)
HELLER, Melita [DE/DE]; DE (UsOnly)
Inventors:
MAYER, Bernd; DE
HATER, Wolfgang; DE
HELLER, Melita; DE
Priority Data:
197 21 346.422.05.1997DE
Title (DE) VERWENDUNG VON ASPARAGINSÄURE-HALTIGEN POLYMEREN ZUSAMMEN MIT HYDROXYCARBONSÄUREN ODER POLYCARBONSÄUREN ZUR KORROSIONSINHIBIERUNG IN KÜHLKREISLÄUFEN
(EN) USE OF POLYMERS CONTAINING ASPARAGINIC ACID IN COMBINATION WITH HYDROXYCARBOXYLIC ACIDS OR POLYCARBOXYLIC ACIDS FOR INHIBITING CORROSION IN COOLING CIRCUITS
(FR) UTILISATION CONJOINTE DE POLYMERES CONTENANT DE L'ACIDE ASPARTIQUE ET D'ACIDES HYDROXYCARBOXYLIQUES OU D'ACIDES POLYCARBOXYLIQUES POUR INHIBER LA CORROSION DANS DES CIRCUITS DE REFROIDISSEMENT
Abstract:
(DE) Verwendung von organischen Polymeren oder Copolymeren, die zu mindestens 80 Mol-% aus Asparaginsäure bestehen, in Kombination mit ein- bis sechsbasischen gegebenenfalls Hydroxy-substituierten Carbonsäuren, wobei die Summe aus Carboxyl- und Hydroxygruppen mindestens zwei beträgt im Gewichtsverhältnis Polymer zu Hydroxycarbonsäure zwischen 10 : 1 und 1 : 10 zur Korrosionsinhibierung in wäßrigen Kühlkreisläufen. Dabei ist es nicht erforderlich, daß dem Kühlkreislauf weitere Korrosionsinhibitoren wie Phosphate, Zinksalze, Salze von Schwermetallen und/oder Molybdate zugesetzt werden.
(EN) The invention relates to the use of organic polymers or copolymers, consisting to at least 80 mole percent of asparaginic acid, in combination with possibly hydroxy-substituted mono- to hexabasic carboxylic acids, whereby the sum of the carboxyl and hydroxy groups is at least two at a weight ratio of polymer to hydrocarboxylic acid of between 10:1 and 1:10, for inhibiting corrosion in aqueous cooling circuits. According to the invention, no additional corrosion inhibitors such as phosphates, zinc salts, heavy metal salts and/or molybdates have to be added to the cooling circuit.
(FR) L'invention concerne l'utilisation pour inhiber la corrosion dans des circuits de refroidissement aqueux, de polymères ou de copolymères organiques comprenant au moins 80 % en mole d'acide aspartique, en combinaison avec des acides carboxyliques mono- ou hexabasiques, éventuellement substitués par hydroxy, la somme des groupes carboxyle et hydroxy s'élevant au moins à deux dans un rapport en poids polymère/acide carboxylique compris entre 10: 1 et 1: 10. A cet effet, il n'est pas nécessaire d'ajouter d'autres inhibiteurs de corrosion, tels que des phosphates, des sels zinciques, des sels de métaux lourds et/ou des molybdates.
Designated States: AU, BG, BR, BY, CA, CN, CZ, GE, HU, ID, IS, JP, KG, KP, KR, KZ, LK, LT, LV, MD, MX, NO, NZ, PL, RO, RU, SG, SI, SK, TJ, TM, TR, UA, US, UZ, VN, YU
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: German (DE)
Filing Language: German (DE)
Also published as:
AU1998076543