Absorbent article comprising cyclodextrin complexes
Absorbent articles having a cyclodextrin complex of one or more odor controlling organic compounds wherein the cyclodextrin is a substituted cyclodextrin (wherein the H atom of OH groups in positions 2, 3 and 6 is partially or entirely replaced by a substituent —R) having a substitution degree (DS) of 0.4 or more —R substituents per molecule of cyclodextrin and wherein substitution in position 2 is 20% or above, in position 6 is 20% or above and in position 3 is 50% or below. Cyclodextrin complexes of this type release the odor controlling organic compound much faster and in more complete manner than non-substituted or differently substituted cyclodextrin complexes thus the odor control efficacy is improved.
1. An absorbent article comprising a substituted cyclodextrin complex of one or more odor controlling organic compounds wherein said substituted cyclodextrin complex comprises cyclodextrin molecules which are substituted (wherein the H atom of OH groups in positions 2, 3 and 6 is partially or entirely replaced by a substituent —R), wherein the substituted cyclodextrin complex has a substitution degree (DS) of about 0.4 to about 2.5 —R substituents per glucose unit of cyclodextrin and wherein substitution in position 2 is 20% or above, in position 6 is 20% or above and substitution in position 3 is less than that of position 2 and/or position 6.
2. An absorbent article according to claim 1 wherein the cyclodextrin has a substitution degree of from 0.9 to 2.4.
3. An absorbent article according to claim 1 , wherein the substitution in position 2 is between about 20 percent to about 90 percent.
4. An absorbent article according to claim 1 , wherein the substitution in position 2 is between about 45 percent to about 80 percent.
5. An absorbent article according to claim 1 , wherein the substitution in position 6 is between about 20 percent to about 90 percent.
6. An absorbent article according to claim 2 , wherein the substitution in position 6 is between about 40 percent to about 80 percent.
7. An absorbent article according to claim 1 , wherein the R substituents are selected from linear or branched C1-C5 saturated chain.
8. An absorbent article according to claim 1 , wherein the R substituents are selected, from methyl and hydroxymethyl and are preferably methyl.
9. An absorbent article according to claim 1 , wherein the article comprises an absorbent core and wherein the cyclodextrin complex is provided on the absorbent core.
10. An absorbent article according to claim 1 , wherein the substitution in position 3 is between about 10 percent to about 50 percent.
11. An absorbent article according to claim 1 , wherein the substitution in position 3 is between about 20 percent and about 40 percent.
12. An absorbent article according to claim 10 , wherein the substitution in position 2 is between about 20 percent to about 90 percent.
13. An absorbent article according to claim 10 , wherein the substitution in position 2 is between about 45 percent to about 80 percent.
14. An absorbent article according to claim 10 , wherein the substitution in position 6 is between about 20 percent to about 90 percent.
15. An absorbent article according to claim 10 , wherein the substitution in position 6 is between about 40 percent to about 80 percent.
16. An absorbent article according to claim 10 , wherein cyclodextrin has a substitution degree of from 1.6 to 2.1.