Antimicrobial phosphate glass
The invention relates to an antimicrobial phosphate glass having the following composition in percent by weight on an oxide basis: P 2 O 5 >66-80 percent by weight; SO 3 0-40 percent by weight; B 2 0 3 0-1 percent by weight; Al 2 O 3 >6.2-10 percent by weight; SiO 2 0-10 percent by weight; Na 2 O>9-20 percent by weight; CaO 0-25 percent by weight; MgO 0-15 percent by weight; SrO 0-15 percent by weight; BaO 0-15 percent by weight; ZnO>0-25 percent by weight; Ag 2 O 0-5 percent by weight; CuO 0-10 percent by weight; GeO 2 0-10 percent by weight; TeO 2 0-15 percent by weight; Cr 2 O 3 0-10 percent by weight; J 0-10 percent by weight; F 0-3 percent by weight.
1. Antimicrobial acting phosphate glass or glass ceramic in the form of a water-soluble powder, comprising the following composition in percent by weight on an oxide basis
P 2 O 5
>66-80
percent by weight
SO 3
0-16.8
percent by weight
B 2 O 3
0-1
percent by weight
Al 2 O 3
>6.2-10
percent by weight
SiO 2
0-10
percent by weight
Na 2 O
>11.0-20
percent by weight
Li 2 O
0
percent by weight
K 2 O
0
percent by weight
CaO
0-16.8
percent by weight
MgO
0-15
percent by weight
SrO
0-15
percent by weight
BaO
0-15
percent by weight
ZnO
>0-16.8
percent by weight
Ag 2 O
0-5
percent by weight
CuO
0-10
percent by weight
GeO 2
0-10
percent by weight
TeO2
0-15
percent by weight
Cr 2 O 3
0-10
percent by weight
I
0-10
percent by weight
F
0-3
percent by weight.
2. Antimicrobial acting phosphate glass or glass ceramic in accordance with claim 1 , characterized by the fact that the composition comprises less than 0.01 percent by weight B 2 O 3 , preferably being free from B except for impurities.
3. Antimicrobial acting phosphate glass or glass ceramic in accordance with claim 1 , characterized by the fact that the composition comprises 5-16.8 percent by weight CaO.
4. Antimicrobial acting phosphate glass or glass ceramic in accordance with claim 1 , characterized by the fact that the composition comprises 5-16.8 percent by weight ZnO.
5. Antimicrobial acting phosphate glass or glass ceramic in accordance with claim 1 , characterized by the fact that the composition comprises >12- 16.8 percent by weight ZnO.
6. Anticrobial acting phosphate glass or glass ceramic in accordance with claim 1 , characterized by the fact that the composition comprises 0-<1.2 percent by weight Ag 2 O.
7. Antimicrobial acting phosphate glass or glass ceramic in accordance with claim 1 , characterized by the fact that the sum Ag 2 O +CuO +GeO 2 +TeO 2 +Cr 2 O 3 +I+F+ZnO amounts to between 0.01 and 16.8 percent by weight.
8. Antimicrobial acting phosphate glass or glass ceramic in accordance with claim 1 , characterized by the fact that the sum ZnO+CaO+MgO ranges between 10 and 16.8 percent by weight.
9. Antimicrobial acting phosphate glass or glass ceramic in accordance with claim 1 , characterized by the fact that the composition comprises 67-76 percent by weight P 2 O 5 .
10. Antimicrobial acting glass or glass ceramic in accordance with claim 1 , said powder having an average particle size of <20 μm.
11. Antimicrobial acting glass or glass ceramic in accordance with claim 1 , said powder having an average particle size of <10 μm.
12. Antimicrobial acting glass or glass ceramic in accordance with claim 1 , said powder having an average particle size of <5 μm.
13. Antimicrobial acting glass or glass ceramic in accordance with claim 1 , said powder having an average particle size of <1 μm.
14. Antimicrobial acting glass or glass ceramic comprising the glass composition of claim 1 , for use in cosmetic products.
15. Antimicrobial acting glass or glass ceramic comprising the glass composition of claim 1 , for use in deodorant products.
16. Antimicrobial acting glass or glass ceramic comprising the glass composition of claim 1 , for use in medical products and preparations.
17. Antimicrobial acting glass or glass ceramic comprising the glass composition of claim 1 , for use in plastics and polymers.
18. Antimicrobial acting glass or glass ceramic comprising the glass composition of claim 1 , for use in the field of paper hygiene.
19. Antimicrobial acting glass or glass ceramic comprising the glass composition of claim 1 , for use in food.
20. Antimicrobial acting glass or glass ceramic comprising the glass composition of claim 1 , for use in detergents.
21. Antimicrobial acting glass or glass ceramic comprising the glass composition of claim 1 , for use in paints and lacquers.
22. Antimicrobial acting glass or glass ceramic comprising the glass composition of claim 1 , for use in plasters, cements and concrete.
23. Antimicrobial acting glass or glass ceramic comprising the glass composition of claim 1 , for use in products of oral hygiene, dental care, oral care, palatine hygiene, palatine care.
24. Antimicrobial acting phosphate glass or glass ceramic in accordance with claim 1 , said composition having a ratio of Na/Al of between 2:1 and 1:1.
25. Antimicrobial acting phosphate glass ceramic, characterized by the fact that the glass ceramic is obtained from a source glass with a glass composition in accordance with claim 1 .
26. Antimicrobial acting glass or glass ceramic powder comprising the glass ceramic of claim 25 .