Absorbent article comprising cyclodextrin complexes

Patent metadata

Field	Value
Publication number	US-10183273-B2
Application number	US-201715630976-A
Country	US
Kind code	B2
Filing date	Jun 23, 2017
Priority date	Jun 24, 2016
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

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.

First claim

What is claimed is:

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.

Assignees

• Procter & Gamble

Inventors

• Scavone Timothy Alan
• Riedeman James Steven
• Vega Victor Nicholas
• Duval Dean Larry
• Purdon Mike P
• Ellingson Peter Christopher
• Rezai Ebrahim
• Stapp Vince Scott

Classifications

• B01J20/24 Primary

  Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives · CPC title

• A61L2300/802

  Additives, excipients, e.g. cyclodextrins, fatty acids, surfactants · CPC title

• A61F13/49

  specially adapted to be worn around the waist, e.g. diapers, nappies · CPC title

• B01J20/3231

  characterised by the coating or impregnating layer · CPC title

• C11B9/0061

  compounds containing a six-membered aromatic ring not condensed with another ring · CPC title