公开(公告)号：WO2022101191A1

公开(公告)日：2022-05-19

申请号：PCT/EP2021/081096

申请日：2021-11-09

Applicant: CHEMETALL GMBH

Inventor： KHELFALLAH, Nawel Souad ,  BURKHARDT, Thomas ,  OSTROVSKY, Ilya ,  WALTER, Manfred ,  GASPARIC, Sven Daniel ,  ROTHER-NOEDING, Helen

IPC: C23C22/34 ,  C23C22/44

Abstract: The present invention relates to a method for treatment of at least one metallic surface of a substrate comprising at least a step of contacting said surface with an acidic aqueous composition (A), said acidic aqueous composition (A) comprising (a) one or more metal ions selected from the group of titanium, zirconium and hafnium ions (b) and one or more polymers (P) containing OH- and/or COOH-groups as well as at least one sulfur-containing moiety, to a corresponding acidic aqueous composition (A) as such, to a master batch to produce such acidic aqueous composition (A), to the use of the acidic aqueous composition (A) for treating metallic surfaces and to substrates comprising the thus treated surfaces.

公开(公告)号：WO2022090388A1

公开(公告)日：2022-05-05

申请号：PCT/EP2021/079972

申请日：2021-10-28

Applicant: CHEMETALL GMBH

Inventor： KHELFALLAH, Nawel Souad ,  BURKHARDT, Thomas ,  OSTROVSKY, Ilya ,  WALTER, Manfred ,  GASPARIC, Sven Daniel ,  ROTHER-NOEDING, Helen

IPC: C23C22/44

Abstract: The present invention relates to a method for treatment of at least one metallic surface of a substrate comprising at least a step of contacting said surface with an acidic aqueous composition (A), said acidic aqueous composition (A) having a pH value in a range of from 2.5 to

公开(公告)号：WO2022101192A1

公开(公告)日：2022-05-19

申请号：PCT/EP2021/081097

申请日：2021-11-09

Applicant: CHEMETALL GMBH

Inventor： KHELFALLAH, Nawel Souad ,  BURKHARDT, Thomas ,  OSTROVSKY, Ilya ,  WALTER, Manfred ,  GASPARIC, Sven Daniel ,  ROTHER-NOEDING, Helen

IPC: C23C22/34

Abstract: The present invention relates to a method for treatment of at least one metallic surface of a substrate comprising at least a step of contacting said surface with an acidic aqueous composition (A), said acidic aqueous composition (A) comprising (a) one or more metal ions selected from the group of titanium, zirconium and hafnium ions (b) and one or more polymers (P) having side chains (S1) and (S2) being different from one another, wherein side chain (S1) comprises at least one functional group selected from the group consisting of hydroxyl groups and carboxylic acid groups and mixtures thereof, and side chain (S2) comprises at least two hydroxyl groups, to a corresponding acidic aqueous composition (A) as such, to a master batch to produce such acidic aqueous composition (A), to the use of the acidic aqueous composition (A) for treating metallic surfaces and to substrates comprising the thus treated surfaces.