Patent KR-20030033986-A (KR)
Inventor: HEBER JOCHEN
IPC: C25D3/60
Filed: 2002-10-23
Abstract: PURPOSE: Effective stabilizers for electroless nickel plating solutions that do not adversely affect the deposition process are provided. CONSTITUTION: The electroless nickel plating composition comprises nickel, a reducing agent, a complexing agent, and an accelerator, wherein the accelerator is a mesoionic compound in an amount sufficient to accelerate the rate of deposition of the composition, wherein the mesoionic compound comprises sulfur, and wherein the mesoionic compound is selected from the group consisting of a triazolium compound having the following formula (I), and a tetrazolium compound having the following formula (II), wherein R1 is a substituted or unsubstituted alkyl, alkenyl, thioalkoxy, or alkoxycarbonyl group having from 1 to 28 carbon atoms; a substituted or unsubstituted cycloalkyl group having from 3 to 28 carbon atoms; a substituted or unsubstituted aryl group having from 6 to 33 carbon atoms; a substituted or unsubstituted heterocyclic ring having from 1 to 28 carbon atoms and one or more hetero atoms; an alkyl, cycloalkyl, alkenyl, alkoxyalkyl, aryl, or phenoxy group connecting to a substituted or unsubstituted aromatic ring; or an alkyl, cycloalkyl, alkenyl, alkoxyalkyl, aryl, or phenoxy group connecting to a substituted or unsubstituted heterocyclic ring having 1 to 28 carbon atoms and one or more heteroatoms; R2 is a substituted or unsubstituted amine group having from 0 to 25 carbon atoms; a substituted or unsubstituted alkyl, alkenyl, or alkoxy group having from 1 to 28 carbon atoms; a substituted or unsubstituted cycloalkyl group from 3 to 28 carbon atoms; a substituted or unsubstituted acyloxy group having from 2 to 25 carbon atoms; a substituted or unsubstituted aryl group having from 6 to 33 carbon atoms; a substituted or unsubstituted heterocyclic ring having from 1 to 28 carbon atoms and one or more hetero atoms; an alkyl, cycloalkyl, alkenyl, alkoxyalkyl, aryl, or phenoxy group connecting to a substituted or unsubstituted aromatic ring; or an alkyl, cycloalkyl, alkenyl, alkoxyalkyl, aryl, or phenoxy group connecting to a substituted or unsubstituted heterocyclic ring having 1 to 25 carbon atoms and one or more hetero atoms; R3 is a substituted or unsubstituted amine group having from 0 to 25 carbon atoms; a substituted or unsubstituted alkyl, alkoxy, or alkenyl group having from 1 to 28 carbon atoms; a substituted or unsubstituted cycloalkyl group having from 3 to 28 carbon atoms; a substituted or unsubstituted acyloxy group having from 2 to 25 carbon atoms; a substituted or unsubstituted aryl group having from 6 to 33 carbon atoms; a substituted or unsubstituted heterocyclic ring having from 1 to 28 carbon atoms and one or more hetero atoms; an alkyl, cycloalkyl, alkenyl, alkoxyalkyl, aryl, or phenoxy group connecting to a substituted or unsubstituted aromatic ring; or an alkyl, cycloalkyl, alkoxyalkyl, aryl, or phenoxy group connecting to a substituted or unsubstituted heterocyclic ring having 1 to 25 carbon atoms and containing one or more hetero atoms; the R1, R2, and R3 may further combine with each other to form a 5-, 6-, or 7-membered ring; and X is a moiety covalently bound to the ring and capable of being negatively charged.