C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 15/10 (2006.01) C11D 3/39 (2006.01) C11D 17/00 (2006.01)
Patent
CA 2586920
Coated sodium percarbonate particles, having an inner shell layer which comprises at least one inorganic, hydrate-forming salt as the main constituent, and an outer shell layer which comprises an alkali metal thiosulfate, an alkaline earth metal thiosulfate and/or an ammonium thiosulfate, are stable to storage and have an improved storage stability in detergents and cleaning agents. Detergents and cleaning agents which comprise such sodium percarbonate particles show a reduced oxidative attack on oxidation-sensitive constituents of the composition during storage. Machine dishwashing agents in the form of tablets which comprise such sodium percarbonate particles and a corrosion protection agent for silver show a reduced yellowing of the tablets during storage.
L'invention concerne des particules de percarbonate de sodium revêtues comprenant une couche protectrice interne renfermant au moins un sel inorganique formant un hydrate comme composant principal et une couche protectrice externe comprenant un thiosulfate de métal alcalin, un thiosulfate de métal alcalino-terreux et/ou un thiosulfate d'ammonium, lesquelles sont stables au stockage et possèdent une stabilité au stockage améliorée dans des détergents et des agents de nettoyage. Des détergents et des agents de nettoyage renfermant de telles particules de percarbonate de sodium présentent une attaque oxydante réduite sur des constituants sensibles à l'oxydation de la composition pendant le stockage. Des agents de lave-vaisselle sous la forme de pastilles renfermant des particules de percarbonate de sodium et un agent de protection contre la corrosion destiné à l'argent présentent un jaunissement réduit sur les pastilles pendant le stockage.
Jakob Harald
Zimmermann Klaus
Degussa Gmbh
Evonik Degussa Gmbh
Marks & Clerk
LandOfFree
Sodium percarbonate particles having a shell layer... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sodium percarbonate particles having a shell layer..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sodium percarbonate particles having a shell layer... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1753488