Absorbent Article Comprising Cyclodextrin Complexes

Patent metadata

Field	Value
Publication number	US-2017368218-A1
Application number	US-201715630977-A
Country	US
Kind code	A1
Filing date	Jun 23, 2017
Priority date	Jun 24, 2016
Publication date	Dec 28, 2017
Grant date	—

Abstract

Disclosed are 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 topsheet, a backsheet, and an absorbent core disposed between the topsheet and the backsheet, the absorbent article further comprising:
providing a solution in a solvent system said solution comprising a cyclodextrin comprising an odor controlling organic compound wherein said 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 to 2.5 —R substituents per glucose unit of cyclodextrin and wherein substitution in position 2 is about 20 percent or above, in position 6 is about 20 percent or above and in position 3 is less than the degree of substitution in positions 2 and/or position 6, and wherein the substituted cyclodextrin complex is disposed in the absorbent core.

2 . The absorbent article of claim 1 , wherein substitution in position 3 is less than 50 percent, preferably less than about 40 percent, more preferably less than about 30 percent, most preferably less than about 20 percent.

3 . The absorbent article of claim 1 , wherein the substitution in position 3 is less than about 40 percent.

4 . The absorbent article of claim 1 , wherein the substitution in position 3 is less than about 30 percent.

5 . The absorbent article of claim 1 , wherein the substituted cyclodextrin complex has a substitution degree of from between about 0.9 and about 2.4,

6 . The absorbent article of claim 1 , wherein the substituted cyclodextrin complex has a substitution degree of between about 1.2 and about 2.2.

7 . The absorbent article of claim 1 , wherein the substituted cyclodextrin complex has a substitution degree of between about 1.6 and about 2.1.

8 . The absorbent article of claim 1 , wherein the substitution in position 2 is between about 20 percent and about 90 percent.

9 . The absorbent article of claim 1 , wherein the substitution in position 2 is between about 45 percent to about 80 percent.

10 . The absorbent article of claim 1 , wherein the substitution in position 6 is between about 20 percent and about 90 percent.

11 . The absorbent article of claim 1 , wherein the substitution in position 6 is between about 40 percent and 80 percent.

12 . The absorbent article of claim 1 , wherein the —R substituents are selected from linear or branched C1-C5 saturated chain.

13 . The absorbent article article of claim 1 , wherein the —R substituents are selected, from methyl and hydroxymethyl and are preferably methyl.

14 . The absorbent article of claim 1 , wherein the absorbent article further comprises an overall length generally parallel to a Y-axis and an overall width parallel to an X-axis, wherein the substituted cyclodextrin complex is provided in a target zone ( 330 ) of the absorbent article.

15 . The absorbent article of claim 14 , wherein the target zone is disposed between two outer zones ( 335 ), and wherein the target zone comprises more than about 20 percent to less than about 80 percent of the overall length of the absorbent article.

16 . The absorbent article of claim 14 , wherein the target zone is disposed between two outer zones ( 335 ), and wherein the target zone comprises more than about 30 percent to less than about 70 percent of the overall length of the absorbent article.

17 . The absorbent article of claim 14 , wherein the target zone is disposed between two outer zones ( 335 ), and wherein the target zone comprises more than about 40 percent to less than about 60 percent of the overall length of the absorbent article.

18 . A method to manufacture an absorbent article the method comprising:
providing a solution in a solvent system said solution comprising a cyclodextrin comprising an odor controlling organic compound wherein said 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 to 2.5 —R substituents per glucose unit of cyclodextrin and wherein substitution in position 2 is about 20 percent or above, in position 6 is about 20 percent or above and substitution in position 3 is less than that of position 2 and/or position 6; providing a material component comprised by the absorbent article; and applying an amount of the solution to the material component of the absorbent article in a target zone and wherein the substituted cyclodextrin is disposed in the absorbent core.

19 . The method of claim 18 , further comprising the step of evaporating the solvent and precipitating the cyclodextrin complex on the material component of the absorbent article or spraying the solution onto the material component of the absorbent article.

20 . The method of claim 18 , wherein the absorbent article further comprises an overall length generally parallel to a Y-axis and an overall width parallel to an X-axis, wherein the target zone is disposed between two outer zones, and wherein the target zone comprises more than about 20 percent to less than about 80 percent of the overall length, more preferably more than about 30 percent to less than about 70 percent, most preferably more than about 40 percent to less than about 60 percent of the overall length.

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

• A61F13/49007

  Form-fitting, self-adjusting disposable diapers · CPC title

• A61L15/28

  Polysaccharides or their derivatives {(A61L15/225 takes precedence)} · CPC title

• B01J20/3231

  characterised by the coating or impregnating layer · CPC title

• A61L2300/802

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

• B01J20/24 Primary

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