Preparation of bleaching catalysts

摘要

The present invention concerns synthesizing manganese complexes in essentially non-aqueous solutions.

主权项

1. A powder comprising a manganese catalyst from a ligand of formula (I): wherein: p is 3; R is independently selected from the group consisting of hydrogen, C1-C6-alkyl, CH2CH2OH, and CH2COOH, or one of R is linked to the N of another Q via an ethylene bridge; R1, R2, R3, and R4 are independently selected from the group consisting of H, C1-C4-alkyl, and C1-C4-alkylhydroxy; and wherein the power is obtained by spray drying or freeze drying.