Patent ID: 6214196
Filing Date: 2001-04-10
Classification: C25B

Abstract:
A method of producing a bisphosphine oxide characterized by performing a Kolbe electrolysis coupling reaction to a phosphine oxide carboxylic acid shown by the following general formula (1): ##STR6##in the formula, R.sup.1 and R.sup.2 represent a linear or branched alkyl group, hydroxyalkyl group, or aminoalkyl group with 1-18 carbons, or a substituted or non-substituted phenyl group, wherein R.sup.1 and R.sup.2 may either be identical or dissimilar, and A represents a linear or branched alkylene group, wherein said bisphosphine oxide is shown by the following general formula (2): ##STR7##in the formula, R.sup.1, R2 and A represent what are defined above.