Ausimont S.p.a.

Beghin-say

Eridania Beghin-say

Julio Mentech

Fulvio Burzio

Roland Herwig Beck

Myriam Elseviers

Emile Wong

Jean-Paul Maitre

Isabelle Betremieux

Bruno Legger

Sylvie Reynaud

Myriam Elsevier

Microcrystalline sugars or sugar-alcohols; method for preparing the same

The invention concerns a process for preparing saccharide monomers comprising at least one polymerizable acrylate or methacrylate group whereby the saccharide used in the process is selected from mono-, di- and tri-saccharides, in particular from non-reducing mono-, di- and tri-saccharides. The process comprises reacting the saccharide in an aqueous medium with an esterifying reagent containing the polymerizable acrylate or methacrylate group in the presence of a base while maintaining the pH of the reaction medium to a value within the range of 7 to 11 during the entire reaction time. The invention furthermore concerns saccharide monomers comprising at least one polymerizable acrylate or methacrylate group with a controlled degree of substitution.

Method for preparing saccharide monomers comprising at least one

A process for increasing the bleaching efficiency of an inorganic persalt or hydrogen peroxide by adding to said persalt or H.sub.2 O.sub.2 an activating agent. The activating agent is an acetylated gluconic acid derivative, such as N-methyl-N-acetyl pentaacetyl gluconamide, N-methyl-N-acetyl pentaacetyl gluconamide or tetraacetyl gluconolactone. The invention also relates to the acetylated gluconic acid derivatives themselves.

Process for increasing the bleaching efficiency of an inorganic persalt

The invention relates to a process for increasing the bleaching efficiency of an inorganic persalt and to bleaching and/or detergent compositions suitable for removing stains from textiles or from other products such as paper, cellulose, cork, hair etc. These bleaching and/or detergent and/or anti-incrusting compositions comprise an inorganic persalt and an activating agent comprising an acetylated mixture of sorbitol and mannitol wherein the molar ratio between the bleaching activator and the persalt is usually from 10:90 to 50:50. The bleaching activator having an acetylation degree ranging from 1 to 6 and the weight ratio of sorbitol to mannitol in the mixture is within the range of from 2.5:1 to 4:1.

Described is a process for increasing the bleaching efficiency of an inorganic persalt (peroxide) by adding to said persalt (peroxide) an activating agent comprising acetylated sucrose, the average acetylation degree of said acetylated sucrose being from 4.5 to 7.0.

Process for increasing the bleaching efficiency of persalts by using a

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Lyons, France

Julio Mentech