Shellac-coated particles of active ingredients with controlled release properties at high pH-values, process for their manufacture and use thereof
AssigneeConstruction Research & Technology GmbH
InventorsWolfgang Seidl, Dawid Marczewski, Sascha Raspl, Steffen Wache, Michael Schinabeck, Stefan Friedrich
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Abstract
Suggested is a novel coated particle of active ingredients with controlled release properties at pH-values from 10 to 14, wherein the active ingredient is selected from one or more construction chemical additives for the control of inorganic binders, characterized in that the coating comprises shellac, a process for its manufacture and the use thereof as an additive for mortars, dry mortars, cement slurries and/or concretes.
Claims17
A coated particle of active ingredients with controlled release properties at pH values from 10 to 14, characterized in that the particle having a coating comprises at least two layers in the form of a core/shell structure, wherein the active ingredient is comprised in a core area, and wherein the active ingredient is selected from one or more construction chemical additives, characterized in that the coating consists of cross-linked shellac.
A coated particle of active ingredients with controlled release properties at pH values from 10 to 14, characterized in that the particle having a coating comprises at least two layers in the form of a core/shell structure, wherein the active ingredient is comprised in a core area, and wherein the active ingredient is selected from one or more construction chemical additives, characterized in that the coating consists essentially of crosslinked shellac and at least a disintegrant, a wax, a plasticizer, a hydrophobization agent, a polyvinylpyrrolidone, a filler, a salt, or mixtures thereof.
Dependencies are inferred from the claim text.