Preparation of a particulate bleach activator composition

Details Preparation of a particulate bleach activator composition Preparation of a particulate bleach activator composition

C - Chemistry, Metallurgy

11

D

C11D 7/54 (2006.01) C07H 13/04 (2006.01) C11D 1/83 (2006.01) C11D 3/39 (2006.01) C11D 7/10 (2006.01) C11D 7/14 (2006.01) C11D 7/32 (2006.01)

Patent

CA 2041931

O.Z. 0050/41600 Abstract of the Disclosure: A particulate bleach activa- tor composition containing A) from 40 to 95% by weight of pentaacetylglucose or a mixture of pentaacetylglucose and further customary bleach activators and B) from 5 to 60% by weight of one or more additives selected from the following classes: (1) basic inorganic alkali metal and alkaline earth metal salts, (2) mono-, di- and trialkylamines, (3) chelating organic complexing agents combined with hydroxycarboxylic acids, (4) water-insoluble inorganic silicates, (5) anionic surfactants, (6) nonionic surfactants, (7) carboxyl-containing polymers and (8) polysaccharides, is produced by (a) reacting glucose with acetic anhydride to give pentaacetylglucose, (b) removing the resulting acetic acid by distillation down to a residual level of from 0.2 to 10% by weight, (c) admixing the reaction mixture with one or more additives B and optionally further customary bleach activators, and (d) converting the product into a particulate form by a size-enlargement process.

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