Compositions comprising bleaching catalyst, manufacturing process thereof, and bleaching and cleaning agent comprising same

A composition containing

• a water-soluble polymer selected from the group consisting of polyvinylalcohol or modified polyvinylalcohol,
• a polysaccharide absorbent selected from the group consisting of starch or modified starch,
• a water soluble transition metal ion containing bleaching catalyst, wherein the water-soluble transition metal ion containing bleaching catalyst has a water solubility of at least 30 g/L at 20° C. and is a dinuclear Mn(III) and/or Mn(IV) complex selected from the group consisting of [MnIV2(μ-O)3(Me3TACN)2]SO4, [MnIV2(μ-O)3(Me3TACN)2](NO3)2, [MnIV2(μ-O)3(Me3TACN)2](CH3COO)2, [MnIV2(μ-O)3(Me3TACN)2](benzoate)2, [MnIIIMnIV(μ-O)2 (μ-CH3COO)(Me4DTNE)]Cl2, [MnIIIMnIV(μ-O)2(μ-CH3COO)(Me4DTNE)]SO4, [MnIIIMnIV(μ-O)2(μ-CH3COO)(Me4DTNE)](NO3)2 or [MnIIIMnIV(μ-O)2(μ-CH3COO)(Me4DTNE)](CH3COO)2, wherein Me3TACN denotes 1,4,7-trimethyl-1,4,7-triazacyclononane and Me4DTNE denotes (1,2-bis(4,7-dimethyl-1,4,7-triazacyclononan-1-yl)ethane, and
• 20 to 80 wt % of a bleaching activator selected from the group consisting of tetraacetylethylene diamine, n-nonanoyloxibenzenesulfonate, glycerol triacetate (triacetin) or decanoyloxibenzoic acid, where the percentage refers to the total weight of the composition;
• wherein the water soluble transition metal ion containing bleaching catalyst is present in the composition in an amorphous or nanocrystalline form.