[EN] COMPOSITION FOR TIN-SILVER ALLOY ELECTROPLATING COMPRISING A COMPLEXING AGENT<br/>[FR] COMPOSITION POUR L'ÉLECTROGALVANISATION D'ALLIAGE D'ÉTAIN ET D'ARGENT COMPRENANT UN AGENT COMPLEXANT
申请人:BASF SE
公开号:WO2019185468A1
公开(公告)日:2019-10-03
An aqueous composition comprising (a) metal ions comprising tin ions and silver ions and (b) at least one complexing agent of formula (C1) R1-X1-S-X21[D1-X22-]nS-X3-R2, (C2) R1-X1-S-X31-D2-[X32-S-]nX3-R2, (C3) R3-X1-S-X41-[D3-X42-]nS-X3-R4 wherein X1, X3 are independently selected from a linear or branched C1-C12 alkanediyl, which may be unsubstituted or substituted by OH; X21, X22 are independently selected from X1, which may be further substituted by -X5-COOR12, -X5-SO2-O-R12, a C2 to C6 polyoxyalkylene group of formula -(O-CH2- CHR11)z-OH, or a combination thereof, and -X1-NH-CO-X6-CO-NH-X1-; X31, X32 are independently selected from a chemical bond and X1; X41, X42 are independently selected from X1; X5 is a linear or branched Ci to C10 alkyl; X6 is selected from X1 and a divalent 5 or 6 membered aromatic group; R1, R2 are independently selected from a monovalent 5 or 6 membered aromatic N- heterocyclic group comprising one N atom or two N atoms which are separated by at least one C atom, and its derivatives received by N-alkylation with a C1-C6- alkyl group, which may be substituted by --COOR12 or -SO2-O-R12, and which aromatic N- heterocyclic group may optionally further comprise, under the proviso that X21 is substituted by at least one OH, one S atom; R3, R4 are independently selected from a monovalent 5 or 6 membered aliphatic N- heterocyclic group comprising one N atom and one O atom; D1 is independently selected from S, O and NR10-; D2 is (a) a divalent 5 or 6 membered aliphatic heterocyclic ring system comprising 1 or 2 S atoms, or (b) a 5 or 6 membered aromatic heterocyclic ring system comprising at least two N atoms and optionally one or two S atoms; D3 is independently selected from S and NR10-; n is an integer of from 0 to 5; z is an integer from 1 to 50; R10 is selected from H and a linear or branched C1-C12 alkyl; R11 is selected from H and a linear or branched C1 to C6 alkyl; and R12 is selected from R10 and a cation.
一种水性组合物,包括(a)包括锡离子和银离子的金属离子和(b)至少一种具有以下结构的络合剂:(C1)R1-X1-S-X21[D1-X22-]nS-X3-R2,(C2)R1-X1-S-X31-D2-[X32-S-]nX3-R2,(C3)R3-X1-S-X41-[D3-X42-]nS-X3-R4,其中X1、X3可独立地选择自线性或支链的C1-C12脂肪二亚基,可以未取代或被OH取代;X21、X22可独立地选择自X1,可以进一步被-X5-COOR12,-X5-SO2-O-R12,具有式-(O-CH2-CHR11)z-OH的C2到C6聚氧烷基,或其组合物取代,以及-X1-NH-CO-X6-CO-NH-X1-;X31、X32可独立地选择自化学键和X1;X41、X42可独立地选择自X1;X5是线性或支链的Ci到C10烷基;X6选择自X1和双价的5或6元芳香族基;R1、R2可独立地选择自包括一个N原子或两个N原子的单价5或6元芳香N-杂环基,通过N-烷基化与C1-C6烷基基团取代的衍生物,可以被--COOR12或-SO2-O-R12取代,该芳香N-杂环基可以选择性地进一步包括,在X21至少被一个OH取代的条件下,一个S原子;R3、R4可独立地选择自包括一个N原子和一个O原子的单价5或6元脂肪N-杂环基;D1可独立地选择自S、O和NR10-;D2是(a)包括1或2个S原子的双价5或6元脂肪杂环环系统,或(b)包括至少两个N原子和可选地一个或两个S原子的5或6元芳香杂环环系统;D3可独立地选择自S和NR10-;n是从0到5的整数;z是从1到50的整数;R10选择自H和线性或支链的C1-C12烷基;R11选择自H和线性或支链的C1到C6烷基;R12选择自R10和阳离子。