C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
31/51
C09K 15/32 (2006.01) C09K 3/00 (2006.01) C23F 11/10 (2006.01)
Patent
CA 1122394
PATENT APPLICATION entitled: ANTI-CORROSION COMPOSITION, ITS METHOD OF PREPARATION AND ITS USE IN THE PROTECTION OF METALLIC SURFACES. in the name of: UNION CHIMIQUE ET INDUSTRIELLE DE L'OUEST S.A. ABSTRACT OF THE DISCLOSURE 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 deri- vative selected from the group constituted by the amino- alkylenephosphonic acids derivatives and the alkylene- polyphosphonic acid derivatives. The invention further relates to the method for preparing the said composition. Said composition is useful to inhabit the corrosion of metallic surfaces caused by water, in liquid or steam form.
337470
Goudreau Gage & Associates
Union Chimique Et Industrielle de L'ouest
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