Abstract:
The present invention concerns the treatment of a cellulose materialin the presence of a transition metal catalyst, hydrogen peroxide whilst maintaining the pH of the treatment mixture.
Abstract:
The present invention concerns the treatment of a cellulose materialin the presence of a transition metal catalyst, hydrogen peroxide whilst maintaining the pH of the treatment mixture.
Abstract:
The present invention provides antioxidants that are readily deposited on elastomers and are also more stable in formulation that monophenolic species.
Abstract:
A stabilised bleaching composition is provided. The bleaching composition provided comprises a transition metal catalyst together with a UV screen.
Abstract:
A method of treating aqueous industrial waste comprising the following steps : (i) storing the aqueous industrial waste in a holding vessel (ii) adding to the aqueous industrial waste a transition metal catalyst or precursor thereof and hydrogen peroxide to provide a concentration of the transition metal catalyst in a concentration from 0.1 to 100 mM and a concentration of the hydrogen peroxide from 1 to 1500 mM and (iii) releasing the effluent after treatment for further processing or directly into the environment, wherein the tansition metal catalyst is a specific mononuclear or dinuclear complex of a Mn (iii) or Mn (IV) transition metal catalyst, and wherein the pH of the aqueous solution is maintained within the operating window of 2.5 pH units in the pH range 7.5 to 11.5. The preformed catalyst is subjected to an electrochemical reduction step before addition to the waste solution.
Abstract:
A stabilised bleaching composition is provided. The bleaching composition provided comprises a transition metal catalyst together with a UV screen.
Abstract:
The present invention provides a bleaching composition comprising a [3.3.1] bicyclo compound carrying at least one a C8-C22-alkyl chain, together with a peroxygen source.