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US5968025A Expired / Lapsed US ⏱️ 0.0 years remaining

Absorbent article having a lotioned topsheet

Assignee: Procter and Gamble Co
•
Filing: 1997-06-27
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Granted: 1999-10-19
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Expires: 2017-06-27
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Abstract

Abstract An absorbent article containing a liquid pervious topsheet coated with a lotion composition is disclosed. The lotion composition comprises a plastic or fluid emollient such as mineral oil or petrolatum, an immobilizing agent such as a fatty alcohol or paraffin wax to immobilize the emollient on the surface of the topsheet, and optionally a hydrophilic surfactant to improve wettability of the coated topsheet. Because the emollient is substantially immobilized on the surface of the topsheet, less lotion is required to impart the desired therapeutic or protective lotion coating benefits.

Inventors

  • 👤 Donald Carroll Roe
  • 👤 Frank Heinrich Bakes
  • 👤 Alrick Vincent Warner

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 19:18
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/48; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/51113; A61F13/84; A61F13/8405; A61K; A61K8/00; A61K8/02; A61K8/0208; A61K8/18; A61K8/30; A61K8/31; A61K8/33; A61K8/39; A61K8/49; A61K8/4973; A61K8/4993; A61L15/22; A61L15/34; A61Q; A61Q19/00; D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/06; D21H17/07; D21H17/14; D21H17/20; D21H21/00; D21H21/14; D21H21/22; D21H21/24; A61F2013/51117; A61K2800/00; A61K2800/20; A61K2800/30; A61K2800/31

Claims Analysis

Total Claims: 26
Claim 1
Independent Claim 229 words
An absorbent article comprising: A) a liquid impervious backsheet; B) a liquid pervious topsheet joined to said backsheet, said topsheet having an inner surface oriented toward the interior of said absorbent article and an outer surface oriented toward the skin of the wearer when said absorbent article is being worn, wherein at least a portion of said topsheet outer surface comprises an effective amount of a lotion coatings which is semi-solid or solid at 20° C. said lotion coating comprising: (i) from about 10 to about 95% of a substantially water free emollient having a plastic or fluid consistency at 20° C. wherein said emollient contains 5% or less water, said emollient comprising a member selected from the group consisting of petroleum-based emollients, fatty acid ester emollients, alkyl ethoxylate emollients, and mixtures thereof; (ii) from about 5 to about 90% of an agent capable of immobilizing said emollient on said outer surface of the topsheet, said immobilizing agent being miscible with said emollient, said immobilizing agent having a melting point of at least about 35° C. wherein said immobilizing agent is selected from the group consisting of polyhydroxy fatty acid esters, polyhydroxy fatty acid amides, C 14 -C 22 fatty alcohols, C 12 -C 22 fatty acids, C 12 -C 22 fatty alcohol ethoxylates, and mixtures thereof; and C) an absorbent core positioned between said topsheet and said backsheet.
Claim 2
Dependent Claim 229 words
An absorbent article comprising: A) a liquid impervious backsheet; B) a liquid pervious topsheet joined to said backsheet, said topsheet having an inner surface oriented toward the interior of said absorbent article and an outer surface oriented toward the skin of the wearer when said absorbent article is being worn, wherein at least a portion of said topsheet outer surface comprises an effective amount of a lotion coatings which is semi-solid or solid at 20° C. said lotion coating comprising: (i) from about 10 to about 95% of a substantially water free emollient having a plastic or fluid consistency at 20° C. wherein said emollient contains 5% or less water, said emollient comprising a member selected from the group consisting of petroleum-based emollients, fatty acid ester emollients, alkyl ethoxylate emollients, and mixtures thereof; (ii) from about 5 to about 90% of an agent capable of immobilizing said emollient on said outer surface of the topsheet, said immobilizing agent being miscible with said emollient, said immobilizing agent having a melting point of at least about 35° C. wherein said immobilizing agent is selected from the group consisting of polyhydroxy fatty acid esters, polyhydroxy fatty acid amides, C 14 -C 22 fatty alcohols, C 12 -C 22 fatty acids, C 12 -C 22 fatty alcohol ethoxylates, and mixtures thereof; and C) an absorbent core positioned between said topsheet and said backsheet.
Claim 3
Dependent Claim 13 words
The absorbent article of claim 1 wherein said article is a sanitary napkin.
Claim 4
Dependent Claim 33 words
The absorbent article of claim 1 wherein said emollient contains about 5% or less water and comprises a petroleum based emollient selected from the group consisting of mineral oil, petrolatum, and mixtures thereof.
Claim 5
Dependent Claim 11 words
The absorbent article of claim 3 wherein said emollient is petrolatum.
Claim 6
Dependent Claim 12 words
The absorbent article of claim 4 wherein said emollient is mineral oil.
Claim 7
Dependent Claim 32 words
The absorbent article of claim 1 wherein the quantity of lotion coating on said portion of said topsheet outer surface ranges from about 0.1 mg/in 2 to about 25 mg/in 2 .
Claim 8
Dependent Claim 32 words
The absorbent article of claim 6 wherein the quantity of lotion coating on said portion of said topsheet outer surface ranges from about 1 mg/in 2 to about 10 mg/in 2 .
Claim 9
Dependent Claim 41 words
The absorbent article of claim 1 wherein said emollient comprises a fatty acid ester emollient selected from the group consisting of methyl palmitate, methyl stearate, isopropyl laurate, isopropyl myristate, isopropyl paimitate, ethylhexyl palmitate, lauryl lactate and cetyl lactate, and mixtures thereof.
Claim 10
Dependent Claim 40 words
The absorbent article of claim 1 wherein said emollient comprises an alkyl ethoxylate emollient selected from the group consisting of C 12 -C 18 fatty alcohol ethoxylates having an average degree of ethoxylation ranging from about 2 to about 30.
Claim 11
Dependent Claim 34 words
The absorbent article of claim 1 wherein said lotion coating comprises from about 5 to about 50% of said immobilizing agent, said immobilizing agent having a melting point of at least about 40° C.
Claim 12
Dependent Claim 18 words
The absorbent article of claim 10 wherein said immobilizing agent comprises a C 14 -C 22 fatty alcohol.
Claim 13
Dependent Claim 31 words
The absorbent article of claim 11 wherein said immobilizing agent comprises a C 16 -C 18 fatty alcohol selected from the group consisting of cetyl alcohol, stearyl alcohol, and mixtures thereof.
Claim 14
Dependent Claim 56 words
The absorbent article of claim 10 wherein said immobilizing agent comprises a polyhydroxy fatty acid ester having the formula: ##STR5## wherein R is a C 5 -C 31 hydrocarbyl group; Y is a polyhydroxyhydrocarbyl moiety having a hydrocarbyl chain with at least 2 free hydroxyls directly connected to the chain; and n is at least 1.
Claim 15
Dependent Claim 53 words
The absorbent article of claim 13 wherein said immobilizing agent comprises a polyhydroxy fatty acid ester selected from the group consisting of sorbitan esters of C 16 -C 22 saturated fatty acids, glyceryl monoesters of C 16 -C 22 saturated fatty acids, and sucrose esters of C 12 -C 22 saturated fatty acids.
Claim 16
Dependent Claim 45 words
The absorbent article of claim 14 wherein said immobilizing agent comprises a polyhydroxy fatty acid ester selected from the group consisting of sorbitan palmitates, sorbitan stearates, sorbitan behenates, glyceryl monostearate, glyceryl monopalmitate, glyceryl monobehenate, sucrose mono- and di- stearate, and sucrose mono- and di- laurate.
Claim 17
Dependent Claim 13 words
The absorbent article of claim 15 wherein said immobilizing agent comprises sorbitan stearates.
Claim 18
Dependent Claim 71 words
The absorbent article of claim 10 wherein said immobilizing agent comprises a polyhydroxy fatty acid amide having the formula: ##STR6## wherein R 1 is HX C 1 -C 4 hydrocarbyl, 2 -hydroxyethyl, 2 -hydroxypropyl, methoxyethyl, methoxypropyl or a mixture thereof; R 2 is a C 5 -C 31 hydrocarbyl group; and Z is a polyhydroxyhydrocarbyl moiety having a linear hydrocarbyl chain with at least 3 hydroxyls directly connected to the chain.
Claim 19
Dependent Claim 38 words
The absorbent article of claim 17 wherein R 1 is N-methyl, N-ethyl, N-propyl, N-isopropyl, N-butyl, N-2-hydroxyethyl, N-methoxypropyl or N-2-hydroxypropyl; R 2 is straight chain C 11 -C 17 alkyl or alkenyl, or mixture thereof, and Z is glycityl.
Claim 20
Dependent Claim 37 words
The absorbent article of claim 18 wherein said immobilizing agent comprises a polyhydroxy fatty acid amide selected from the group consisting of N-lauryl-N-methyl glucamide, N-lauryl-N-methoxypropyl glucamide, N-cocoyl-N-methyl glucamide, N-cocoyl-N-methoxypropyl glucamide, N-palmityl-N-methoxypropyl, glucamide, N-tallowyl-N-methyl glucamide, and N-tallowyl-N-methoxypropyl glucamide.
Claim 21
Dependent Claim 14 words
The absorbent article of claim 10 wherein said immobilizing agent comprises a paraffin wax.
Claim 22
Dependent Claim 34 words
The absorbent article of claim 1 wherein said lotion coating further comprises from about 1 to about 50% of a hydrophilic surfactant, said hydrophilic surfactant having an HLB value of at least about 4.
Claim 23
Dependent Claim 39 words
The absorbent article of claim 21 wherein said lotion coating further comprises from about 1 to about 25% of said hydrophilic surfactant, said hydrophilic surfactant being nonionic and having an HLD value of from about 4 to about 20.
Claim 24
Dependent Claim 41 words
The absorbent article of claim 22 wherein said hydrophilic surfactant comprises an ethoxylated alcohol having an alkyl chain of from about 8 to about 22 carbon atoms and having an average degree of ethoxylation ranging from about 1 to about 54.
Claim 25
Dependent Claim 37 words
The absorbent article of claim 23 wherein said ethoxylated alcohol has an alkyl chain of from about 11 to about 22 carbon atoms and having an average degree of ethoxylation ranging from about 2 to about 30.
Claim 26
Dependent Claim 36 words
The absorbent article of claim 24 wherein said hydrophilic surfactant comprises an ethoxylated sorbitan ester of a C 12 -C 18 fatty acid having an average degree of ethoxylation of from about 2 to about 20.

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Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2002-10-18 2003-04-19 2003-10-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2006-10-18 2007-04-19 2007-10-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2010-10-18 2011-04-19 2011-10-19 $7700.00 Window Closed / Lapsed

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