Magnesium carbonate as a carrier for the release of active agents in a home care formulation
AssigneeOmya International AG
InventorsTanja Budde, Tobias Keller
Life of this patent
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Abstract
The present invention relates to a carrier material for the release of one or more active agent(s) in a home care formulation, a delivery system for the release of one or more active agent(s) in a home care formulation, a home care formulation comprising the delivery system for the release of one or more active agent(s), a method for preparing the delivery system for the release of one or more active agent(s) in a home care formulation as well as the use of the delivery system for the release of one or more active agent(s) in a home care formulation.
Claims21
A delivery system for the release of one or more active agent(s) in a home care formulation, the delivery system comprising a carrier material and one or more active agent(s) which is loaded on the carrier material,
- wherein
- the carrier material consists of magnesium carbonate having a specific surface area of from 25 to 150 m2/g, measured using nitrogen and the BET method according to ISO 9277:2010, and wherein the magnesium carbonate comprises synthetic hydromagnesite (Mg5(CO3)4(OH)2·4H2O),
- the delivery system comprises the one or more active agent(s) in an amount ranging from 80 to 260 wt.-%, based on the total weight of the carrier material, and
- the delivery system provides a release efficiency for the one or more active agent(s) represented by the following formula (I)
- release
-
-
- efficiency
- =
- 100
- *
- m
-
- (
- active
-
-
-
- agent
-
-
- released
- )
- m
-
- (
- active
-
-
-
- agent
-
-
- loaded
- )
- (
- I
- )
- of ≥63.4%.
Dependencies are inferred from the claim text.