EP 0010485 B1 19820512 - CORROSION INHIBITOR COMPOSITION, PROCESS FOR ITS PREPARATION AND ITS USE IN PROTECTING METAL SURFACES
Title (en)
CORROSION INHIBITOR COMPOSITION, PROCESS FOR ITS PREPARATION AND ITS USE IN PROTECTING METAL SURFACES
Publication
Application
Priority
- FR 7829312 A 19781013
- FR 7916763 A 19790628
Abstract (en)
[origin: US4276089A] The present invention relates to an anti-corrosion composition, which contains: (a) at least a polyamine with a molecular weight greater than or equal to 320 and answering to the general formula: R-[NH-(CH2)3]n1-NH2 wherein R is a saturated or unsaturated aliphatic C12-C22 hydrocarbon radical; and n1 is an integer varying between 1 and 7 inclusive, R and n1 being such that the molecular weight of the said polyamine is greater than or equal to 320; and (b) at least one alkylenephosphonic acid derivative selected from the group constituted by the aminoalkylenephosphonic acids derivatives and the alkylenepolyphosphonic acid derivatives. The invention further relates to the method for preparing the said composition. Said composition is useful to inhibit the corrosion of metallic surfaces caused by water, in liquid or steam form.
IPC 1-7
IPC 8 full level
C23F 11/10 (2006.01)
CPC (source: EP US)
C23F 11/10 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE GB IT LU NL SE
DOCDB simple family (publication)
EP 0010485 A1 19800430; EP 0010485 B1 19820512; BR 7906560 A 19800624; CA 1122394 A 19820427; DD 146629 A5 19810218; DE 2962827 D1 19820701; OA 06353 A 19810630; US 4276089 A 19810630
DOCDB simple family (application)
EP 79400727 A 19791009; BR 7906560 A 19791012; CA 337470 A 19791012; DD 21623579 A 19791015; DE 2962827 T 19791009; OA 56913 A 19791013; US 8355379 A 19791010