CA1251372A - Encapsulated foaming bath composition - Google Patents
Encapsulated foaming bath compositionInfo
- Publication number
- CA1251372A CA1251372A CA000507938A CA507938A CA1251372A CA 1251372 A CA1251372 A CA 1251372A CA 000507938 A CA000507938 A CA 000507938A CA 507938 A CA507938 A CA 507938A CA 1251372 A CA1251372 A CA 1251372A
- Authority
- CA
- Canada
- Prior art keywords
- unit dosage
- dosage form
- cosmetic unit
- diethanol
- surfactant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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Abstract
Abstract of the Invention Cosmetic unit dosage forms comprising encapsulated liquid blends of acidic and basic surfactants are provided.
The blends are both high foaming bath compositions and com-patible with soft gelatin capsules.
The blends are both high foaming bath compositions and com-patible with soft gelatin capsules.
Description
L3~7~
, ENCAPSULATED FOAMING BATH COMPOSITION
Background of the Invention -Bathing compositions which foam upon exposure to warm water have found wide consumer acceptance due to the en-hanced cleaning power of the foam produced and the cosmeticaspects such as appearance, fragrance and emollience which can be imparted by the ingredients commonly incorporated therein. Liquid bathing compositions, or "bath oils," are --available as aqueous solutions or dispersions of mineral oil, 10 wheat germ oil, thickeners, fragrance and the like, which are -:
formulated to incorporate an effective amount of one or more foam-producing surfactants.
Although such liquid compositions can function ef-fectively to foam bath water, their general availability in bulk (bottled~ form poses a number of proble~s. In the first place, the appropriate amount must be pre-measured and poured into the bath water stream, a step which often results in waste or spillage. In the second place, bottled bath oils are bulky and inconvenient to transport. Although the large excesses of water employed to formulate the composltions pro-mote their dispersion in the bath water, the water also in~
creases the shipping weight and storage space required for liquid bath oil compositions.
Soft ~elatin encapsulation of a liquid foaming bath oil composition could remedy these deficiencies, providing easily-transportable "unit doses" of the composition in con-centrated form. Soft, elastic (SEG) gelatin capsules are -stable for long periods under ambient conditions while rup- -turing readily when exposed to warm water. However, soft gelatin, i.e. of type A or B, is chemically destabilized by alkaline salts, leading to the leaking or bleeding of the .. . . . . .
- . . . - , ~L2~ L37~ ~
capsule contents at elevated pH. This property has hereto-fore prevented the soft gelatin enca~sulation of bath oil compositions such as those which include commonly-used foaming surfactants such as the fatty acid (diethanol)amides~
These surfactants exhibit pH's of greater than about 8.0-8.5 as measured in aqueous solution.
Therefore a need exists for a concentrated, high-foaming bath composition which is suitable for, and com-patible with, a soft gelatin shell.
Brief Description of the Invention The present invention provides a cosmetic unit dos-age form comprising a soft gelatin capsule containing a `-liquid, foam-producing blend incorporating a fragrance and a surfactant system. The surfactant system will include a fatty acid (diethanol)amide, the diethanolamine salt OL a fatty alcohol(ethylenoxy)sulfate and a fatty alcohol(ethyl-onoxy)acetic acid. Although the diethanol amide and di- `
20 ethanol amine sulfate surfactants are basic (alkaline), it .~
has unexpectedly been found that the combination of these two ~-su factants with a fatty alcohol(ethylenoxy)acetic acid sur- ---factant is both high-foaming and compatible (non-reactive) with soft gelatin. Although the mechanism of the interaction of the surfactants is not known, the acidic surfactant is able to counteract the expected degradation of the capsule wall by -the basic surfactants without substantially reducing the foaming power of the individual surfactants.
The liquid blend may contain minor amounts of adju- ' vants such as co-solvents and emollient oils but is otherwise substantially water-free. As used herein, the term "substantially water-free" is defined to mean that water pre- ~^
sent in the starting materials as provided by the manufac- --turers or as acquired by hygroscopic attraction may be present in the carrier mixture, as well as minor amounts of .
~.2~3~
added water which are insu~ficient to deleteriously effect the capsule wall stability.
The common chemical names of the surfactants are in accord with the nomenclature system o~ the CTFA
Cosmetic Ingredient Dictionary (3rd Ed., 1982)~
The terms "foam-producing1' and "foamable" are intended to indicate the capacity for producing a foam layer upon contact with a warm aqueous medium such as bath water.
Thus the present invention provides a cosmetic unit dosage form comprising a soft gelatin capsule containing a substantially water-free, liquid blend consisting essentially of:
(a) from about 0.5% to about 10% of a fragrance;
(b) from about 30% to about 60% of a foamable mix-ture of basic surfactants comprising a (diethanol)amine salt of a fatty alcohol (ethylenoxy)sulfate and a fatty acid ~diethanol)amide; and (c) from about 30% to about 60% of an amount of a foamable acidic surfactant comprising fatty alcohol-(polyethylenoxy)acetic acid effective to render theliquid blend substantially non~reactive with said gelatin capsule while maintaining the foam-producing ability of the surfactants in aqueous media, said percentages being percentages by weight based on the total weight of the composition, said composition containing not more than 10% by weigAt of other com-ponents.
In another embodiment the in~ention provides a cosmetic unit dosage form comprising a soft gelatin capsule containing a substantially water-free liquid blend consisting essentially of:
(a) about 005-10% fragrance;
(b) about 30-60% of a foamable mixture of basic surfactants comprising a fatty acid (diethanol)amide and a basic surfactant of the formula:
(C8-C22)alkyl(0CH2CH2)nOS03H.HN(CH2CH20H)2 wherein n is about 1-5;
-3a-(c) abo~t 30-60% of a foamable acidic surfactant comprising a surfactant of the general formula:
(c8-c~2)alkyl(ocH2cH2)mocH2co2 wherein m is about 3-15; and (d) about 2-5~ propylene glycol said percentages being percentages by weight based on the total weight of the composition, said composition containing not more than 10% by weight of other components.
Detailed Description of the Invention The compositions of the present invention permit the encapsulation, storage and delivery via soft gelatin encapsulation of basic foamable surfactants which would normally be chemically-incompatible with soft gelatin if incorporated therein in a cosmetically acceptable amount. To overcome this incompatibility, the basic surfactants are combined with an amount of a foamable acidic surfactant effective to render the basic surfactants compatible with flexible, soft gelatin capsules while maintaining the foam-producing ability of the surfactants in aqueous media substantially intact.
The basic, or high pH, surfactants useful in the present foamable surfactant blend are selected from two classes: the diethanol amine salts of fatty alcohol-(ethylenoxy)sulfates and the diethanolamides of fattyacids.
Useful sulfate salts include those of the general formula: higher (C8-C22)alkyl(0CH2CH2)nOSO3H.HN-(C~l2CH20H)2, wherein n is about 1-5. Commercially-available surfactants of this type include DEA-Laureth Sulfate (available in combination with Cocamide DEA as Monamine (trade mark) 779 from Mona Industries, Inc., Paterson, N.J.) and DEA-Myreth Sulfate (available in ~2~ 37~2 -3b-combination with Cocamide DEA as Standapol (trade mark)Conc. 7023 from Henkel, Inc.). The commercially-available preparations of these sulfate amine salts are viscous liquids which exhibit pH's of about 8.5-9.0 in 10% aqueous solution.
The high pH surfactants employed in the present surfactant systems will also include at least one (diethanol) amide of a saturated or unsaturated fatty acid of the general formula: higher(C8-C22)alkylC=ON(CH2CH2OH)2. Useful amide surfactants of this class include lauramide DEA (Monamid~
716, Mona Industries), cocamide DEA, linoleamide DEA and ole-amide DEA. These amides are generally viscous liquids which exhibit pH's of about 9.5-11.0 in 10% aqueous solutions.
The acidic, or low pH, surfactants employed to pre-pare the present surfactant blends are selected from fattyalcohol(polyethylenoxy)acetic acids cf the general formula higher(Cg-C22)alkyl(OCH2CH2)mOCH2CO2H wherein m is about 3-15, preferably about 5-12. Commercially-available members of this class include tridesceth-7-carboxylic acid (Sandopan~
DTC-Acid, Sandoz Chemical Co., East Hanover, N.J., C13-alkyl, m=6) and isosteareth-6-carboxylic acid; C18-i-alkyl, m=3;
Sandopan3 TA-10. These surfactants are generally oily liq-uids which exhibit pH's of about 3-~ in 1% aqueous solutions.
Preferably the acidic surfactant will be blended with the basic surfactants in a weight ratio of about 0.5-1.5:1, most preferabl~ about 1:1. The basic surfactant will include at least one member of both the sulfate amine salt and the fatty acid amide. Preferably, one or more of the fatty acid a~ides will form the major proportion of the basic surfactant blend, most preferably at least about 60% (e.g., 60-80%) of the amide will be present.
The liquid blend of the present invention can also include a minor amount of a C2-C4 diol or triol, preferably propylene glycol and/or glycerin, which can function to ad-just the viscosity of ~he surfacta~t blend and enhance itsrelease from the ruptured capsule.
~ inor but effective amounts of an odoriferous ayent selected so as to be chemically-compatible with soft gelatin and the above-described surfactants will be included in the liquid blend. IJseful fragrances will include, for .. . . .. . . . . . . . .. . .
instance about 0.5-10~, preferably about 1-5% of floral oils such as rose oil, lavender, lilac, jasmine, wisteria, citrus, apple blossom, or compound bouquets such as spice, pine, woody, oriental, and the like.
Minor amounts of other foam-compatible adjuvants, such as dyes, emollient oils, biocides (preservatives and/or disinfectants) and the like, may be introduced into the pres-ent product in effective amounts either via the li~uid filler or gelatin wall. When employed in the present products, such adjuvants can be present at levels of up to about 5-10% by weight of the finished product.
Therefore preferred liquid foam-producing blends prepared according to the present invention will comprise about 30-60%, preferably about 40-55~ by weight of a basic surfactant comprising a diethanol amine salt of a fatty alco-hol(ethylenoxy)sulfate and a diethanolamide of a fatty acid;
about 30-60~, preferably about ~0-55% of an acidic surfactant com~rising a fatty aleohol (polyethylenoxy)acetic acid, about 1-10~ fragrance and about 1-10% propylene glycol, preferably about 2-5%.
The liquid foamable blends are generally prepared by mixing together the surfactants under ambient conditions, followed by room temperature addition of the fragrance and the propylene glycol. The resultant blend is mixed until homogeneous and then filled into soft gelatin capsules in a suitable cosmetic unit dose size, e.g. 3000-4000 mg, via a rotary die encapsulation machine or similar encapsulating device.
~he invention will be further described by refer-ence to the following detailed example.
EXAMPLE
Lauramide DEA (Monamid~ 716, 5.0 kg), a mixture of DEA Laureth Sulfate and Cocamide DEA (Monamine~ 779, 3.2 kg) :
:' '' . . .
3t72 , and Tridesceth-7-Carboxylic Acid (Sandopan~ DTC-acid, 8.2 kg) were blended to homogeneity in a stainless steel mixing vat equipped with mechanical stirring. Citrus-jasmine fragrance (0.52 kg) and propylene glycol (0.5 kg) were added and the viscous liquid stirred an additional 1.0 hour at 25C. The mixture was filled into spherical soft gelatin (SEG 90 minim) capsules at a dose of 3500 mg per capsule by means of a rotary die encapsulation apparatus. The batch resulted in about 5x103 Eilled capsules.
Preliminary stability testing indicated that the ;
filled capsules did not leak or bleed after 1-2 months at 37C. The filled capsules are expected to be indefinitely stable upon storage at controlled room temperatures of 56-86~F (15-30~C).
When three capsules were contacted with a stream of warm (110-120~F) soft city water, the capsule shells ruptured in less than 1 minute and the shell completely dissolved in about 10 minutes. Foaming was evident as soon as the shell opened and the foam layer persisted for about 30 minutes~
Therefore, the Example demonstrates the preparation of a foaming bath oil composition which is quickly released from the capsule upon exposure to warm water, but which does not negatively affect capsule wall stability upon storage.
While certain representative embodiments oE the invention have been described herein for purposes of illus-tration, i~ will be apparent to those skilled in the art that modifications therein may be made without departing from the spirit and scope of the invention.
, ENCAPSULATED FOAMING BATH COMPOSITION
Background of the Invention -Bathing compositions which foam upon exposure to warm water have found wide consumer acceptance due to the en-hanced cleaning power of the foam produced and the cosmeticaspects such as appearance, fragrance and emollience which can be imparted by the ingredients commonly incorporated therein. Liquid bathing compositions, or "bath oils," are --available as aqueous solutions or dispersions of mineral oil, 10 wheat germ oil, thickeners, fragrance and the like, which are -:
formulated to incorporate an effective amount of one or more foam-producing surfactants.
Although such liquid compositions can function ef-fectively to foam bath water, their general availability in bulk (bottled~ form poses a number of proble~s. In the first place, the appropriate amount must be pre-measured and poured into the bath water stream, a step which often results in waste or spillage. In the second place, bottled bath oils are bulky and inconvenient to transport. Although the large excesses of water employed to formulate the composltions pro-mote their dispersion in the bath water, the water also in~
creases the shipping weight and storage space required for liquid bath oil compositions.
Soft ~elatin encapsulation of a liquid foaming bath oil composition could remedy these deficiencies, providing easily-transportable "unit doses" of the composition in con-centrated form. Soft, elastic (SEG) gelatin capsules are -stable for long periods under ambient conditions while rup- -turing readily when exposed to warm water. However, soft gelatin, i.e. of type A or B, is chemically destabilized by alkaline salts, leading to the leaking or bleeding of the .. . . . . .
- . . . - , ~L2~ L37~ ~
capsule contents at elevated pH. This property has hereto-fore prevented the soft gelatin enca~sulation of bath oil compositions such as those which include commonly-used foaming surfactants such as the fatty acid (diethanol)amides~
These surfactants exhibit pH's of greater than about 8.0-8.5 as measured in aqueous solution.
Therefore a need exists for a concentrated, high-foaming bath composition which is suitable for, and com-patible with, a soft gelatin shell.
Brief Description of the Invention The present invention provides a cosmetic unit dos-age form comprising a soft gelatin capsule containing a `-liquid, foam-producing blend incorporating a fragrance and a surfactant system. The surfactant system will include a fatty acid (diethanol)amide, the diethanolamine salt OL a fatty alcohol(ethylenoxy)sulfate and a fatty alcohol(ethyl-onoxy)acetic acid. Although the diethanol amide and di- `
20 ethanol amine sulfate surfactants are basic (alkaline), it .~
has unexpectedly been found that the combination of these two ~-su factants with a fatty alcohol(ethylenoxy)acetic acid sur- ---factant is both high-foaming and compatible (non-reactive) with soft gelatin. Although the mechanism of the interaction of the surfactants is not known, the acidic surfactant is able to counteract the expected degradation of the capsule wall by -the basic surfactants without substantially reducing the foaming power of the individual surfactants.
The liquid blend may contain minor amounts of adju- ' vants such as co-solvents and emollient oils but is otherwise substantially water-free. As used herein, the term "substantially water-free" is defined to mean that water pre- ~^
sent in the starting materials as provided by the manufac- --turers or as acquired by hygroscopic attraction may be present in the carrier mixture, as well as minor amounts of .
~.2~3~
added water which are insu~ficient to deleteriously effect the capsule wall stability.
The common chemical names of the surfactants are in accord with the nomenclature system o~ the CTFA
Cosmetic Ingredient Dictionary (3rd Ed., 1982)~
The terms "foam-producing1' and "foamable" are intended to indicate the capacity for producing a foam layer upon contact with a warm aqueous medium such as bath water.
Thus the present invention provides a cosmetic unit dosage form comprising a soft gelatin capsule containing a substantially water-free, liquid blend consisting essentially of:
(a) from about 0.5% to about 10% of a fragrance;
(b) from about 30% to about 60% of a foamable mix-ture of basic surfactants comprising a (diethanol)amine salt of a fatty alcohol (ethylenoxy)sulfate and a fatty acid ~diethanol)amide; and (c) from about 30% to about 60% of an amount of a foamable acidic surfactant comprising fatty alcohol-(polyethylenoxy)acetic acid effective to render theliquid blend substantially non~reactive with said gelatin capsule while maintaining the foam-producing ability of the surfactants in aqueous media, said percentages being percentages by weight based on the total weight of the composition, said composition containing not more than 10% by weigAt of other com-ponents.
In another embodiment the in~ention provides a cosmetic unit dosage form comprising a soft gelatin capsule containing a substantially water-free liquid blend consisting essentially of:
(a) about 005-10% fragrance;
(b) about 30-60% of a foamable mixture of basic surfactants comprising a fatty acid (diethanol)amide and a basic surfactant of the formula:
(C8-C22)alkyl(0CH2CH2)nOS03H.HN(CH2CH20H)2 wherein n is about 1-5;
-3a-(c) abo~t 30-60% of a foamable acidic surfactant comprising a surfactant of the general formula:
(c8-c~2)alkyl(ocH2cH2)mocH2co2 wherein m is about 3-15; and (d) about 2-5~ propylene glycol said percentages being percentages by weight based on the total weight of the composition, said composition containing not more than 10% by weight of other components.
Detailed Description of the Invention The compositions of the present invention permit the encapsulation, storage and delivery via soft gelatin encapsulation of basic foamable surfactants which would normally be chemically-incompatible with soft gelatin if incorporated therein in a cosmetically acceptable amount. To overcome this incompatibility, the basic surfactants are combined with an amount of a foamable acidic surfactant effective to render the basic surfactants compatible with flexible, soft gelatin capsules while maintaining the foam-producing ability of the surfactants in aqueous media substantially intact.
The basic, or high pH, surfactants useful in the present foamable surfactant blend are selected from two classes: the diethanol amine salts of fatty alcohol-(ethylenoxy)sulfates and the diethanolamides of fattyacids.
Useful sulfate salts include those of the general formula: higher (C8-C22)alkyl(0CH2CH2)nOSO3H.HN-(C~l2CH20H)2, wherein n is about 1-5. Commercially-available surfactants of this type include DEA-Laureth Sulfate (available in combination with Cocamide DEA as Monamine (trade mark) 779 from Mona Industries, Inc., Paterson, N.J.) and DEA-Myreth Sulfate (available in ~2~ 37~2 -3b-combination with Cocamide DEA as Standapol (trade mark)Conc. 7023 from Henkel, Inc.). The commercially-available preparations of these sulfate amine salts are viscous liquids which exhibit pH's of about 8.5-9.0 in 10% aqueous solution.
The high pH surfactants employed in the present surfactant systems will also include at least one (diethanol) amide of a saturated or unsaturated fatty acid of the general formula: higher(C8-C22)alkylC=ON(CH2CH2OH)2. Useful amide surfactants of this class include lauramide DEA (Monamid~
716, Mona Industries), cocamide DEA, linoleamide DEA and ole-amide DEA. These amides are generally viscous liquids which exhibit pH's of about 9.5-11.0 in 10% aqueous solutions.
The acidic, or low pH, surfactants employed to pre-pare the present surfactant blends are selected from fattyalcohol(polyethylenoxy)acetic acids cf the general formula higher(Cg-C22)alkyl(OCH2CH2)mOCH2CO2H wherein m is about 3-15, preferably about 5-12. Commercially-available members of this class include tridesceth-7-carboxylic acid (Sandopan~
DTC-Acid, Sandoz Chemical Co., East Hanover, N.J., C13-alkyl, m=6) and isosteareth-6-carboxylic acid; C18-i-alkyl, m=3;
Sandopan3 TA-10. These surfactants are generally oily liq-uids which exhibit pH's of about 3-~ in 1% aqueous solutions.
Preferably the acidic surfactant will be blended with the basic surfactants in a weight ratio of about 0.5-1.5:1, most preferabl~ about 1:1. The basic surfactant will include at least one member of both the sulfate amine salt and the fatty acid amide. Preferably, one or more of the fatty acid a~ides will form the major proportion of the basic surfactant blend, most preferably at least about 60% (e.g., 60-80%) of the amide will be present.
The liquid blend of the present invention can also include a minor amount of a C2-C4 diol or triol, preferably propylene glycol and/or glycerin, which can function to ad-just the viscosity of ~he surfacta~t blend and enhance itsrelease from the ruptured capsule.
~ inor but effective amounts of an odoriferous ayent selected so as to be chemically-compatible with soft gelatin and the above-described surfactants will be included in the liquid blend. IJseful fragrances will include, for .. . . .. . . . . . . . .. . .
instance about 0.5-10~, preferably about 1-5% of floral oils such as rose oil, lavender, lilac, jasmine, wisteria, citrus, apple blossom, or compound bouquets such as spice, pine, woody, oriental, and the like.
Minor amounts of other foam-compatible adjuvants, such as dyes, emollient oils, biocides (preservatives and/or disinfectants) and the like, may be introduced into the pres-ent product in effective amounts either via the li~uid filler or gelatin wall. When employed in the present products, such adjuvants can be present at levels of up to about 5-10% by weight of the finished product.
Therefore preferred liquid foam-producing blends prepared according to the present invention will comprise about 30-60%, preferably about 40-55~ by weight of a basic surfactant comprising a diethanol amine salt of a fatty alco-hol(ethylenoxy)sulfate and a diethanolamide of a fatty acid;
about 30-60~, preferably about ~0-55% of an acidic surfactant com~rising a fatty aleohol (polyethylenoxy)acetic acid, about 1-10~ fragrance and about 1-10% propylene glycol, preferably about 2-5%.
The liquid foamable blends are generally prepared by mixing together the surfactants under ambient conditions, followed by room temperature addition of the fragrance and the propylene glycol. The resultant blend is mixed until homogeneous and then filled into soft gelatin capsules in a suitable cosmetic unit dose size, e.g. 3000-4000 mg, via a rotary die encapsulation machine or similar encapsulating device.
~he invention will be further described by refer-ence to the following detailed example.
EXAMPLE
Lauramide DEA (Monamid~ 716, 5.0 kg), a mixture of DEA Laureth Sulfate and Cocamide DEA (Monamine~ 779, 3.2 kg) :
:' '' . . .
3t72 , and Tridesceth-7-Carboxylic Acid (Sandopan~ DTC-acid, 8.2 kg) were blended to homogeneity in a stainless steel mixing vat equipped with mechanical stirring. Citrus-jasmine fragrance (0.52 kg) and propylene glycol (0.5 kg) were added and the viscous liquid stirred an additional 1.0 hour at 25C. The mixture was filled into spherical soft gelatin (SEG 90 minim) capsules at a dose of 3500 mg per capsule by means of a rotary die encapsulation apparatus. The batch resulted in about 5x103 Eilled capsules.
Preliminary stability testing indicated that the ;
filled capsules did not leak or bleed after 1-2 months at 37C. The filled capsules are expected to be indefinitely stable upon storage at controlled room temperatures of 56-86~F (15-30~C).
When three capsules were contacted with a stream of warm (110-120~F) soft city water, the capsule shells ruptured in less than 1 minute and the shell completely dissolved in about 10 minutes. Foaming was evident as soon as the shell opened and the foam layer persisted for about 30 minutes~
Therefore, the Example demonstrates the preparation of a foaming bath oil composition which is quickly released from the capsule upon exposure to warm water, but which does not negatively affect capsule wall stability upon storage.
While certain representative embodiments oE the invention have been described herein for purposes of illus-tration, i~ will be apparent to those skilled in the art that modifications therein may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A cosmetic unit dosage form comprising a soft gelatin capsule containing a substantially water-free, liquid blend consisting essentially of:
(a) from about 0.5% to about 10% of a fragrance;
(b) from about 30% to about 60% of a foamable mix-ture of basic surfactants comprising a (diethanol)amine salt of a fatty alcohol (ethylenoxy)sulfate and a fatty acid (diethanol)amide; and (c) from about 30% to about 60% of an amount of a foamable acidic surfactant comprising fatty alcohol-(polyethylenoxy)acetic acid effective to render the liquid blend substantially non-reactive with said gelatin capsule while maintaining the foam-producing ability of the surfactants in aqueous media, said percentages being percentages by weight based on the total weight of the composition, said composition containing not more than 10% by weight of other com-ponents.
(a) from about 0.5% to about 10% of a fragrance;
(b) from about 30% to about 60% of a foamable mix-ture of basic surfactants comprising a (diethanol)amine salt of a fatty alcohol (ethylenoxy)sulfate and a fatty acid (diethanol)amide; and (c) from about 30% to about 60% of an amount of a foamable acidic surfactant comprising fatty alcohol-(polyethylenoxy)acetic acid effective to render the liquid blend substantially non-reactive with said gelatin capsule while maintaining the foam-producing ability of the surfactants in aqueous media, said percentages being percentages by weight based on the total weight of the composition, said composition containing not more than 10% by weight of other com-ponents.
2. The cosmetic unit dosage form of claim 1 wherein the liquid blend further comprises a C2-5-diol or triol.
3. The cosmetic unit dosage form of claim 1 wherein the (diethanol)amine salt of a fatty acid(ethylenoxy)sulfate is of the formula:
(C8-C22)alkyl(OCH2CH2)nOSO3H.HN(CH2CH2OH)2 wherein n is about 1-5, and the fatty acid(diethanol)-amide is of the formula:
(C8-C22)alkylC = ON(CH2CH2OH)2
(C8-C22)alkyl(OCH2CH2)nOSO3H.HN(CH2CH2OH)2 wherein n is about 1-5, and the fatty acid(diethanol)-amide is of the formula:
(C8-C22)alkylC = ON(CH2CH2OH)2
4. The cosmetic unit dosage form of claim 1 wherein the fatty alcohol(polyethylenoxy)acetic acid is of the formula:
(C8-C22)alkyl(OCH2CH2)mOCH2CO2H, wherein m is about 3-15.
(C8-C22)alkyl(OCH2CH2)mOCH2CO2H, wherein m is about 3-15.
5. The cosmetic unit dosage form of claim 2 wherein the C2-C5-diol comprises propylene glycol.
6. A cosmetic unit dosage form comprising a soft gelatin capsule containing a substantially water-free liquid blend consisting essentially of:
(a) about 0.5-10% fragrance;
(b) about 30-60% of a foamable mixture of basic surfactants comprising a fatty acid (diethanol)amide and a basic surfactant of the formula:
(C8-C22)alkyl(OCH2CH2)nOSO3H.HN(CH2CH2OH)2 wherein n is about 1-5;
(c) about 30-60% of a foamable acidic surfactant comprising a surfactant of the general formula:
(C8-C22)alkyl(OCH2CH2)mOCH2CO2H, wherein m is about 3-15; and (d) about 2-5% propylene glycol said percentages being percentages by weight based on the total weight of the composition, said composition containing not more than 10% by weight of other components.
(a) about 0.5-10% fragrance;
(b) about 30-60% of a foamable mixture of basic surfactants comprising a fatty acid (diethanol)amide and a basic surfactant of the formula:
(C8-C22)alkyl(OCH2CH2)nOSO3H.HN(CH2CH2OH)2 wherein n is about 1-5;
(c) about 30-60% of a foamable acidic surfactant comprising a surfactant of the general formula:
(C8-C22)alkyl(OCH2CH2)mOCH2CO2H, wherein m is about 3-15; and (d) about 2-5% propylene glycol said percentages being percentages by weight based on the total weight of the composition, said composition containing not more than 10% by weight of other components.
7. The cosmetic unit dosage form of claim 6 wherein the foamable acidic surfactant comprises tridesceth-7-carboxylic acid.
8. The cosmetic unit dosage form of claim 6 wherein the weight ratio of the acidic surfactant to the basic surfactant mixture is about 0.5-1.5:1.
9. The cosmetic unit dosage form of claim 6 wherein about 3000-4000 mg of the liquid blend is contained by said gelatin capsule.
10. The cosmetic unit dosage form of claim 8 wherein the fatty acid (diethanol)amide comprises at least 60% of the mixture of basic surfactants.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000507938A CA1251372A (en) | 1986-04-30 | 1986-04-30 | Encapsulated foaming bath composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000507938A CA1251372A (en) | 1986-04-30 | 1986-04-30 | Encapsulated foaming bath composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1251372A true CA1251372A (en) | 1989-03-21 |
Family
ID=4133002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000507938A Expired CA1251372A (en) | 1986-04-30 | 1986-04-30 | Encapsulated foaming bath composition |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1251372A (en) |
-
1986
- 1986-04-30 CA CA000507938A patent/CA1251372A/en not_active Expired
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