Use of glass compositions for achieving an antioxidative effect
AssigneeSchott AG
InventorsJoerg Hinrich Fechner, Jose Zimmer, Sean Lee
Life of this patent
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Abstract
Described are the use of glass compositions, for example, in the form of glass powders, glass ceramics, fibers, granules, and spheres for achieving an antioxidative effect. The glass compositions may be used in a versatile manner, such as in cosmetic products, medical products, edibles, paints and lacquers, plasters, cements and concrete, in antifouling products and in polymers. Because of the high photo and temperature stability, the glass antioxidants of the present invention are superior to the organic substances known so far. In addition the glass compositions in contact with human being are non-irritant to skin and even edible. Furthermore, they are toxicologically harmless and environmentally compatible.
Claims15
A method for achieving an antioxidative effect in a cosmetic product or deodorizing product for application to the hair or skin, which comprises adding to the product a glass composition which achieves an antioxidative effect in the product,
- wherein said glass composition comprises the following ingredients
- Si02 0-10 percent by weight
- P205 25-75 percent by weight
- S03 0-30 percent by weight
- B203 0-40 percent by weight
- Al203 0-10 percent by weight
- Li2O 0-15 percent by weight
- Na20 0-40 percent by weight
- K20 0-25 percent by weight
- CaO 3.3-40 percent by weight
- MgO 0-15 percent by weight
- SrO 0-15 percent by weight
- Ba0 0-15 percent by weight
- ZnO 0-40 percent by weight
- Ag20 0-5 percent by weight
- I 0-10 percent by weight and
- Fe203 0-5 percent by weight;
- and
- wherein the glass composition is in the form of fibers, granules, spheres or powders.
A method for achieving an antioxidative effect in a cosmetic product or deodorizing product for application to the hair or skin, which comprises adding to the product a glass-ceramic composition or a ceramic composition which achieves an antioxidative effect in the product,
- wherein said glass-ceramic composition or ceramic composition comprises the following ingredients
- Si02 0-10 percent by weight
- P205 25-75 percent by weight
- S03 0-30 percent by weight
- B203 0-40 percent by weight
- Al203 0-10 percent by weight
- Li2O 0-15 percent by weight
- Na20 0-40 percent by weight
- K20 0-25 percent by weight
- CaO 3.3-40 percent by weight
- MgO 0-15 percent by weight
- SrO 0-15 percent by weight
- BaO 0-15 percent by weight
- ZnO 0-40 percent by weight
- Ag20 0-5 percent by weight
- I 0-10 percent by weight and
- Fe203 0-5 percent by weight;
- and
- wherein the glass-ceramic composition or ceramic composition is in the form of fibers, granules, spheres or powders.
Dependencies are inferred from the claim text.