SnAg alloy plating solution

Patent metadata

Field	Value
Publication number	US-10612150-B2
Application number	US-201616066126-A
Country	US
Kind code	B2
Filing date	Dec 21, 2016
Priority date	Dec 28, 2015
Publication date	Apr 7, 2020
Grant date	Apr 7, 2020

Abstract

The SnAg alloy plating solution of the invention is a SnAg alloy plating solution including a water-soluble tin compound, a water-soluble silver compound, and a particular sulfide compound in an amount in the range of 0.25 mol or more and 10 mol or less with respect to 1 mol of silver in the water-soluble silver compound.

First claim

What is claimed is:

1. A SnAg alloy plating solution comprising:
a water-soluble tin compound;
a water-soluble silver compound; and
a water-soluble sulfide compound in an amount in the range of 0.25 mol or more and 10 mol or less with respect to 1 mol of silver in the water-soluble silver compound,
wherein the water-soluble sulfide compound is a compound represented by the following Formula (I) or Formula (II):

in Formula (I), R 1 represents a single bond or a divalent linking group; and R 2 represents one selected from the group consisting of a hydrogen atom, an alkyl group having a number of carbon atoms in a range of 1 to 8, a hydroxyalkyl group having a number of carbon atoms in a range of 1 to 8, an aryl group having a number of carbon atoms in a range of 6 to 18, and an aralkyl group having a number of carbon atoms in a range of 7 to 18, and

in Formula (II), n represents a number from 2 to 4;
in a case where n is 2, R 3 represents a divalent linking group,
in a case where n is 3, R 3 represents a trivalent linking group or a group containing the trivalent linking group and a divalent linking group linked to the trivalent linking group, and
in a case where n is 4, R 3 represents a tetravalent linking group or a group containing the tetravalent linking group and a divalent linking group linked to the tetravalent linking group, and wherein
the divalent linking group is: a hydrocarbon group selected from a group consisting of an alkylene group having a number of carbon atoms in a range of 1 to 8, an alkenylene group a number of carbon atoms in a range of 2 to 8, an alkynylene group having a number of carbon atoms in a range of 2 to 8 and a arylene group having a number of carbon atoms in a range of 6 to 18, with or without a substituent; the heterocyclic group that is a group in which two hydrogen atoms are removed from an aromatic or aliphatic heterocyclic group compound including a nitrogen atom, an oxygen atom, a sulfur atom or a phosphorous atom, with or without a substituent; or a combined group obtained by linking the hydrocarbon group and one or more of a carbonyl group (—CO—), an oxy group (—O—), a thio group (—S—), a sulfinyl group (—SO—), a sulfonyl group (—SO 2 —), a —PO 2 — group, a —CO—O— group, and a —CO—NR— group,
the trivalent linking group is: a trivalent hydrocarbon group that is a group in which three hydrogen atoms are removed from a hydrocarbon compound selected from a group consisting of an alkane having a number of carbon atoms in a range of 1 to 8, an alkene having a number of carbon atoms in a range of 2 to 8, an alkyne having a number of carbon atoms in a range of 2 to 8 and an aromatic hydrocarbon having a number of carbon atoms in a range of 6 to 18, with or without a substituent; or a trivalent heterocyclic group that is the group in which three hydrogen atoms are removed from aromatic or aliphatic heterocyclic compound including a nitrogen atom, an oxygen atom, a sulfur atom or a phosphorous atom, with or without a substituent, and
the tetravalent linking group is: a tetravalent hydrocarbon group that is a group in which four hydrogen atoms are removed from a hydrocarbon compound selected from a group consisting of an alkane having a number of carbon atoms in a range of 1 to 8, an alkene having a number of carbon atoms in a range of 2 to 8, an alkyne having a number of carbon atoms in a range of 2 to 8 and an aromatic hydrocarbon having a number of carbon atoms in a range of 6 to 18, with or without a substituent; or a tetravalent heterocyclic group that is the group in which four hydrogen atoms are removed from aromatic or aliphatic heterocyclic compound including a nitrogen atom, an oxygen atom, a sulfur atom or a phosphorous atom, with or without a substituent, and wherein
the substituent in the divalent linking group, the trivalent linking group and the tetravalent linking group is: a halogen atom; a hydroxyl group; an amino group; an alkyl group having a number of carbon atoms in a range of 1 to 8; an aryl group having a number of carbon atoms in a range of 6 to 18; an aralkyl group having a number of carbon atoms in a range of 7 to 30; or an alkoxy group having a number of carbon atoms in a range of 1 to 8.

2. The SnAg alloy plating solution according to claim 1 , wherein the water-soluble sulfide compound is a compound represented by Formula (I).

3. The SnAg alloy plating solution according to claim 1 , wherein the water-soluble sulfide compound is a compound represented by Formula (II), n is 2, and R 3 is the divalent linking group.

4. The SnAg alloy plating solution according to claim 1 , wherein the water-soluble sulfide compound is: a compound represented by Formula (II), n is 3, and R 3 is the trivalent linking group; or a group containing the trivalent linking group and the divalent linking group linked to the trivalent linking group.

5. The SnAg alloy plating solution according to claim 1 , wherein the water-soluble sulfide compound is: a compound represented by Formula (II), n is 4, and R 3 is the tetravalent linking group; or a group containing the tetravalent linking group and the divalent linking group linked to the tetravalent linking group.

Assignees

• Mitsubishi Materials Corp

Inventors

• Tatsumi Koji
• YASOSHIMA Tsukasa
• Katase Takuma

Classifications

• C25D3/56 Primary

  of alloys · CPC title

• C25D3/60 Primary

  containing more than 50% by weight of tin · CPC title

• C07D257/04

  Five-membered rings · CPC title

• C07D403/12

  linked by a chain containing hetero atoms as chain links · CPC title