摘要:
Sensitive and/or chemically reactive detergent additives can be shaped in the form of spherical particles having the desirable properties of being non-friable, non-dusty and at the same time fast-dissolving. The process comprises the steps of treating a mixture comprising said detergent additive and a hydratable material with a polymeric material of high Tg in a high-speed mixer/granulator. A preferred detergent additive is a peroxyacid bleach precursor.
摘要:
A particulate antifoam ingredient suitable for incorporation into a detergent powder comprises an antifoam active material, for example, a mixture of silicone oil, petroleum jelly, hydrophobic silica and alkyl phosphate, sorbed onto a porous absorbent water-soluble carbonate-based inorganic carrier of high pore volume and pore diameter, for example, light soda ash or crystal-growth-modified Burkeite.
摘要:
A tablet of compacted particulate detergent composition in which the tablet, or a discrete region thereof, consists essentially of a matrix of particles substantially free of particles
摘要:
An improved process for preparing dry particulate bodies containing a solid peroxyacid compound is disclosed, comprising the steps of
(A) forming a water-wet mixture of a solid peroxyacid compound and a hydratable material having a temperature of hydration of up to 40° C, at a temperature which is higher than the temperature of hydration of the hydratable material; (B) forming the mixture of (A) into particles of the desired shape and size before, during or after cooling the mass to below the temperature of hydration of the hydratable material; and (C) drying the particles obtained from step (B), the improvement being that in step (A) a film-forming material is incorporated in, and intimately mixed with, the water-wet mixture, forming a mix having a pH of below 7.
The peroxyacid-containing bodies obtainable therefrom are extremely suitable for use as a bleach additive and for the incorporation in bleaching and/or detergent powder compositions.
摘要:
A particulate anti-foam ingredient suitable for use in powdered detergent compositions comprises a silicone oil anti-foam active absorbed by particles of a solid carrier. The particles are coated with from 7 to 15% by weight of the coated anti-foam granules of an organic polymer which is soluble in aqueous alkaline solution.
摘要:
An improved process for preparing dry particulate bodies containing a solid peroxyacid compound is disclosed, comprising the steps of (A) forming a water-wet mixture of a solid peroxyacid compound and a hydratable material having a temperature of hydration of up to 40° C, at a temperature which is higher than the temperature of hydration of the hydratable material; (B) forming the mixture of (A) into particles of the desired shape and size before, during or after cooling the mass to below the temperature of hydration of the hydratable material; and (C) drying the particles obtained from step (B), the improvement being that in step (A) a film-forming material is incorporated in, and intimately mixed with, the water-wet mixture, forming a mix having a pH of below 7. The peroxyacid-containing bodies obtainable therefrom are extremely suitable for use as a bleach additive and for the incorporation in bleaching and/or detergent powder compositions.
摘要:
Powders prepared by drying a slurry and suitable for use as detergent powders or components thereof contain (or consist of) sodium carbonate and/or the sodium carbonate/sodium sulphate double salt Burkeite the crystal forms of which have been modified by means of a low level of an organic polycarboxylate. The powders are able to absorb and retain very high levels of liquid components such as nonionic surfactants.
摘要:
A tablet of compacted particulate detergent composition in which the tablet, or a discrete region thereof, consists essentially of a matrix of particles substantially free of particles