GB1570563A – Emulsions of the «water-in-oil» or «oil-in-water» type and cosmetic products using these emulsions
– Google Patents
GB1570563A – Emulsions of the «water-in-oil» or «oil-in-water» type and cosmetic products using these emulsions
– Google Patents
Emulsions of the «water-in-oil» or «oil-in-water» type and cosmetic products using these emulsions
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Publication number
GB1570563A
GB1570563A
GB7088/78A
GB708878A
GB1570563A
GB 1570563 A
GB1570563 A
GB 1570563A
GB 7088/78 A
GB7088/78 A
GB 7088/78A
GB 708878 A
GB708878 A
GB 708878A
GB 1570563 A
GB1570563 A
GB 1570563A
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GB
United Kingdom
Prior art keywords
oil
emulsion
water
lanolin
acid
Prior art date
1977-02-23
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
Application number
GB7088/78A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LOreal SA
Original Assignee
LOreal SA
Priority date (The priority date 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 date listed.)
1977-02-23
Filing date
1978-02-22
Publication date
1980-07-02
1978-02-22
Application filed by LOreal SA
filed
Critical
LOreal SA
1980-07-02
Publication of GB1570563A
publication
Critical
patent/GB1570563A/en
Status
Expired
legal-status
Critical
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Classifications
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
A61Q1/02—Preparations containing skin colorants, e.g. pigments
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
A61K8/00—Cosmetics or similar toiletry preparations
A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
A61K8/04—Dispersions; Emulsions
A61K8/06—Emulsions
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
A61K8/00—Cosmetics or similar toiletry preparations
A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
A61K8/00—Cosmetics or similar toiletry preparations
A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
A61K8/925—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof of animal origin
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
A61Q19/00—Preparations for care of the skin
C—CHEMISTRY; METALLURGY
C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
C09K23/017—Mixtures of compounds
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S424/00—Drug, bio-affecting and body treating compositions
Y10S424/05—Stick
Description
PATENT SPECIFICATION ( 11)
1 570 563 ( 21) Application No 7088/78 ( 22) Filed 22 Feb 1978 ( 19) ( 31) Convention Application No 7 705 258 ( 32) Filed 23 Feb 1977 in 2 ( 33) France (FR) ( 44) Complete Specification published 2 July 1980 ( 51) INT CL 3 B Oi F 17/16 A 61 K 7/00 ( 52) Index at acceptance Bl V 101 104 109 202 203 205 209 210 211 301 B A 5 B 161 FF FH ( 72) Inventors JEAN-CLAUDE SER, ARLETTE ZABOTTO, CHRISTIAN ZAFFRAN and CONSTANTIN KOULBANIS ( 54) EMULSIONS OF THE «WATER-IN-OIL» OR «OIL-IN-WATER» TYPE AND COSMETIC PRODUCTS USING THESE ‘EMULSIONS ( 71) We, L’OREAL, a French Body Corporate of, 14 rue Royale, 75008, Paris, France, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:-
The present invention relates to new emulsions of the «water-in-oil» or «oil-inwater» type which can be used, in particular, in the field of cosmetics or as a pharmaceutical excipient.
It is known that emulsions can exist in two forms, either in the «water-in-oil» form or in the «oil-in-water» form, the form of the emulsion generally being determined by the emulsifier used.
With the aim of obtaining either «waterin-oil» emulsions or «oil-in-water» emulsions, various emulsifiers have already been proposed, but these are specific In other words, an emulsifier which leads to the formation of a «water-in-oil» emulsion cannot be used to form an «oil-in-water» emulsion, and vice versa.
Thus, soaps of lanolin acid (a mixture of fatty acids) with monovalent metals lead more particularly to «oil-in-water» emulsions, whereas lanolin acid soaps of di and trivalent metals preferentially lead to emulsions of the «water-in-oil» type.
Other types of specific emulsifiers have been proposed; mixtures of an oxypropyleneated/polyglycerolated alcohol and magnesium isostearate, succinic esters of a polyoxyalkyleneated fatty alcohol and oxypropyleneated/oxyethyleneated alcohols may be particularly mentioned for the production of emulsions of the «water-in-oil» type Substances such as lanolin, polycyclic alcohols, such as sterols, and high molecular weight aliphatic alcohols, most of which are constituents of waves, are known for use as emulsifiers for emulsions of the «water-inoil» type.
With the aim of facilitating the work of cosmetic scientists, it is important to perfect emulsifiers which make it possible to obtain either «water-in-oil» emulsions or «oil-inwater» emulsions 50 We have found, according to the present invention, completely surprisingly, that this result can be obtained by using certain mixtures of lanolin acid and at least one natural basic {a-amino-acid as the emulsifier 55 In fact, we have found that simply by varying the proportions either of the lanolin.
acid or of the natural basic Lo-amino-acid, it is possible to produce either emulsions of the «water-in-oil» type or emulsions of 60 the «oil-in-water» type under excellent conditions.
Furthermore, we have found, surprisingly, that the use of an emulsifier of this kind makes it possible to obtain emulsions having 65 various p H values, which could only be achieved hitherto by using a well-defined type of emulsifier for each desired p H.
Thus, according to this invention, it is possible to obtain excellent emulsions from 70 solutions which are buffered at p H values generally from 2 9 to 8 9 A result of this kind cannot be obtained with conventional emulsifiers because the emulsion is found to break immediately on acidifying with, for 75 example, hydrochloric acid.
Again, we have found thatthe emulsions of the present invention exhibit excellent fluidity, especially when the emulsifier is used together with lanolin alcohol or hydro 80 genated lanolin.
The emulsions according to the invention furthermore exhibit excellent stability, which makes it possible to avoid the use of stabilisers such as, for example, wax or 85 liquid petrolatum.
The present invention accordingly provides a stable emulsion of the «water-in-oil» or «oil-in-water» type which comprises a water phase, an oil phase and an emulsifier 90 m I.z L 11 t_ 1111 M 1,570,563 which is a mixture of lanolin acid and at least one natural basic,a-amino-acid.
«Natural basic,o-amino-acid,» as used herein, means an a-amino acid which is known under the name of a hexone base, and especially arginine, histidine and lysine.
It is known that lanolin acid (or lanolic acid) is obtained by hydrolysing lanolin or lanolin esters) which is composed of about 94 % of fatty acid esters (see, for example, A W Weitkamp, J Am Chem Soc 67, 447 ( 1945)).
Lanolin acid itself is in fact a rather complex mixture of fatty acids which more particularly include aliphatic acids, which may or may not be substituted, and hydroxylic acids The analyses which have been carried out hitherto have enumerated about 36 different fatty acids Depending on the origin of the lanolin acid and on the method of hydrolysis, the lanolin acid can generally have a mean molecular weight of between about 350 and about 480 In general, lanolin acid occurs in the form of a compact or granular wax having a pale yellow to light brown colour.
Lanolin acids which can be used in the production of the emulsions according to the invention include those known under the tradenames «AMERLATE WFA», sold by Messrs AMERCHOL, and «LANACID», sold by Messrs MALMSTROM, as well as the «Acides Lanoliques» («Lanolin Acids»), sold by Messrs CRODA.
According to this invention, emulsions of the «water-in-oil» type are generally obtained by using weight ratios of lanolin acid/natural basic ac-amino-acid of 98:2 to 82: 18, and preferably 92: 8 to 85: 15.
According to this invention, emulsions of the «oil-in-water» type are generally obtained by using weight ratios of lanolin acid/natural basic x-amino-acid of 80:12 to 60: 40, and preferably 78: 22 to 72:28.
Ratios of 82:18 to 80:20 generally lead to intermediate emulsions It has therefore been found that, only by varying the ratios of the lanolin acid to the natural basic a-amino-acid, it is possible to obtain either emulsions of the «water-in-oil» type or emulsions of the «oil-in-water» type.
The emulsifier is generally present in the emulsion at a concentration of 6 to 20 %, and preferably 10 to 18 %, by weight.
According to a particular embodiment, the emulsifier is used together with lanolin alcohol and/or hydrogenated lanolin in ar amount from, say, 6 to 12 %, and preferably 8 to 10 %, by weight relative to the total weight of the emulsion It is thereby possibkl to obtain emulsions having excellent fluidit 3 and very good stability.
«Hydrogenated lanolin» are used hereit to mean the mixture of alcohols which an obtained by the catalytic hydrogenation o:
lanolin which is essentially composed of esters Its preparation consists in initially hydrogenolysing lanolin (or lanolin esters) to give a mixture of free acids and alcohols, and then in catalytically reducing the free acids to give the corresponding alcohols.
Its preparation can be represented schematically in the following manner:
60:40, and preferably 78:22 to 72:28.
lHl Rw-C-OR -> R C-OH+ROH 11 I O 0 I LANOLIN (or lanolin esters) catalytic X m RCI Io OH II the hydrogenated lanolin being the mixture of the alcohols I and II above.
«Lanolin alcohol» is used herein to mean the alcohols obtained by hydrolysing the 90 esters which constitute lanolin As indicated above the acid resulting is called lanolin acid According to recent analyses, lanolin alcohol is composed of about 33 different alcohols which belong to three separate 95 classes, namely aliphatic alcohols, triterpenoic alcohols and sterols.
Hydrogenated lanolin or lanolin alcohol should preferably have a hydroxyl number of 130 to 170, a drop point of 34 to 70 C, 100 and a peroxide number which is less than or equal to 10.
As hydrogenated lanolins, those known under the tradenames «HYDROLAN» (Registered Trade Mark), sold by Messrs 105 MILLSMASTER ONYX and having a melting point of 48-53 C, «HYDROXYL», sold by Messrs MALMSTROM, and «SUPER-SAT», sold by Messrs RITA Chemical and having a melting point of 110 48-50 C, are suitably used.
As lanolin alcohols, those known under the tradenames «HARTOLAN» (Registered Trade Mark), and «SUPER HARTOLAN», sold by Messrs CRODA, and «LANOCER 115 INA», sold by Messrs ESPERIS, are suitably used.
In general, the emulsions according to the invention comprise a water phase amounting to say, 20 to 70 % by weight, and preferably 120 to 60 % by weight, and an oily phase amounting to, say, 20 to 75 % by weight, and preferably 30 to 55 % by weight, relative to the total weight of the emulsion.
A large variety of products can be em 125 ployed to form the «oil» phase of the emulsions according to the invention, such as hydrocarbon oils, such as paraffin oil, Purcellin oil and perhydrosqualene, and solutions of microcrystalline wax in these oils, 130 1,570,563 animal or vegetable oils, such as sweetalmond oil, avocado oil, callophylum oil, lanolin, castor oil, caballine oil, lard oil and olive oil, mineral oils having an initial distillation temperature at atmospheric pressure of 250 C and a final distillation temperature of 410 C, i e those which distil over a temperature range from 250 to 440 C, and saturated esters such as isopropyl palmitate, alkyl myristates such as isopropyl, butyl and cetyl myristates, hexadecyl stearate, ethyl palmitate, the triglycerides of octanoic and decanoic acids and cetyl ricinoleate.
If desired, silicone oils which are soluble in the other oils, such as dimethylpolysiloxane, methylphenylpolysiloxane and silicone/glycol copolymer, can be added to the «oil» phase.
Waxes such as carnauba wax, Candelilla wax, beeswax, microcrystalline wax and ozokerite can also be used in order to assist retention of the oils.
The present invention also provides cosmetic compositions which are obtained from the emulsions of this invention These cosmetic compositions can exist in various forms.
Emulsions of the «water-in-oil» type make it possible to produce compositions which exist in the form of moisturising creams such as sun creams, face creams, body creams or hand creams, or in the form of moisturising rouges or make-up foundations.
These compositions based on emulsions of the «water-in-oil» type can also exist in the form of moisturising sticks for the face, body and lips, or for eye make-up.
Emulsions of the «oil-in-water» type also make it possible to produce compositions which exist in the form of creams, or preferably in the form of milks, for the care or cleansing of the face, body or hands.
These compositions can also exist in the form of make-up foundations.
The cosmetic compositions according to the invention can contain the ingredients which are generally used in cosmetics, in particular dyestuffs, pigments, perfumes and preservatives such as methyl parahydroxybenzoate or propyl parahydroxybenzoate, the latter making it possible to increase the stability and the keeping properties of the emulsion.
The cosmetic compositions according to the invention have an excellent affinity for the skin and, by virtue of the nature of the emulsifier used, these emulsions make it possible to apply, to the skin, substances, namely natural a-amino-acids, which are present in the epidermis in more or less complexed forms.
As indicated above, the emulsions according to the invention can also be used in the production of pharmaceutical excipients such as creams, ointments and balms.
The present invention also provides a process for the preparation of the emulsions according to the invention, this process being essentially characterised in that, in a first stage, the lanolin acid is dissolved in the «oil» phase at a temperature of about,80 C, whilst stirring, in that, in a second stage, the «water» phase containing the natural basic oz-amino-acid is added at a temperature of about 80 C and in that, finally, emulsification is carried out by rapid stirring using a stirrer or a turbine; the emulsion can then be allowed to cool to ambient temperature, whilst stirring more slowly When the operation is complete, the emulsion can be fined, if desired, by passing it through a roll mill.
The following Examples further illustrate the present invention.
EXAMPLE 1
A «water-in-oil» emulsion, which can be used in cosmetics or as a pharmaceutical excipient, is prepared according to the invention by mixing the following ingredients: 90 Lanolin acid 7 2 g Lysine 0 8 g Lanolin alcohol (LANOCERINA) 8 g Paraffin oil 34 g 95 Water, q s p 100 lg This emulsion is prepared by melting the lanolin acid in the paraffin oil at about 80 C and then by adding the water part which contains the lysine and has been heated to 100 about 800 OC.
Emulsification is then carried out by stirring using a turbine, and the emulsion is then allowed to return to ambient temperature and is fined, if desired, by passing it through 105 a roll mill.
EXAMPLE 2
An «oil-in-water» emulsion, which can be used in cosmetics or as a pharmaceutical 110 excipient, is prepared according to the invention by mixing the following ingredients:
Lanolin acid 8 g Lysine 2 g Paraffin oil 30 g 115 Water, q s p 100 g EXAMPLE 3
A «water-in-oil» emulsion, which can be used in cosmetics or as a pharmaceutical 120 excipient, is prepared according to the invention by mixing the following ingredients:
Lanolin acid 14 4 g Histidine 1 6 g Paraffin oil 34 g 125 Water, q s p 100 lg EXAMPLE 4
An «oil-in-water» emulsion, which can be used in cosmetics or as a pharmaceutical 130 1,570,563 excipient, is prepared according to the invention by mixing the following ingredients:
Lanolin acid 7 g Histidine 3 g Paraffin oil 30 g Water, q s p 100 g EXAMPLE S
An «oil-in-water» emulsion, which can be used in cosmetics or as a pharmaceutical excipient, is prepared according to the invention by mixing the following ingredients:
Lanolin acid 4 5 g Arginine 1 5 g Hydrogenated lanolin 6 g Caprylate ester 7 g Water, q s p 100 g EXAMPLE 6
A «water-in-oil» emulsion, in the form of a cream which can be used in cosmetics or as a pharmaceutical excipient, is prepared according to the invention by mixing the following ingredients:
Lanolin acid 7 2 g Arginine O 8 g Hydrogenated lanolin 8 g Isopropyl palmitate 8 g Water, q s p 100 g The emulsions according to Examples 2 to 6 are obtained in accordance with the same method of operation as that described in Example 1.
EXAMPLE 7
A «water-in-oil» emulsion, in the form of a cream, is prepared according to the invention by mixing the following ingredients:
Lanolin acid 13 5 g Arginine 1 5 g Hydrogenated lanolin 15 O g Paraffin oil 35 O g Preservative O 15 g Perfume O 1 g Water, q s p 100 g This emulsion is prepared by melting the lanolin acid in the hydrogenated lanolin and the paraffin oil at about 80 C, and then by adding the water part which contains the arginine and has been heated to about 80 C.
Emulsification is then carried out by stirring using a turbine, and the emulsion is then allowed to return to ambient temperature and the preservative and perfume are added.
On acidifying with HC 1, for example, to p H 3, no breaking of the emulsion is found.
EXAMPLE 8
An «oil-in-water» emulsion, in the form of a fluid cream, is prepared according to the invention by mixing the following ingrednts:
Lanolin acid 7 8 g Arginine 2 2 g Paraffin oil 32 O g Preservative O 10 g Perfume O 2 g This emulsion is produced in accordance with the same method of operation as that described in Example 7 above.
EXAMPLE 9
An «oil-in-water» emulsion, in the form of a make-up foundation, is prepared according to the invention by mixing the following ingredients:
Lanolin acid 7 5 g Arginine 2 5 g Paraffin oil 30 g Preservative O 1 g Perfume O 2 g Dyestuffs and pigments 10 g Water, q s p 100 g This emulsion in the form of a make-up foundation is produced in accordance with the same method of operation as that described in Example 7; however, the dyestuffs and pigments are introduced during emulsification.
EXAMPLE 10
A «water-in-oil» emulsion, in the form of a make-up foundation, is prepared according to the invention by mixing the following ingredients:
Lanolin acid 14 25 g Arginine 0 75 g Paraffin oil 30 g Preservative 0 15 g Perfume O 1 g Dyestuffs and pigments 10 g Water, q s p 100 g I This emulsion is prepared in the same 105 manner as the emulsion described in Example 9.
Of course, the embodiments of the invention which have been described have only been given by way of indication and they 110 will be able to undergo any desirable modification, without thereby going outside the scope of the invention.
It will be understood that the emulsions according to the invention can also be used 115 in fields other than those of cosmetics and of excipients for pharmaceutical products.
Claims (1)
WHAT WE CLAIM IS:-
1 An emulsion of the «water-in-oil» or 120 «oil-in-water» type comprising an aqueous phase, an oil phase and an emulsifier which is a mixture of lanolin acid and at least one natural basic,oz-amino acid as hereinbefore defined 125 2 An emulsion according to claim 1, in which the natural basic,o-amino-acid is arginine, histidine or lysine.
1,570,563 3 An emulsion according to claim 1 or 2 in which the lanolin acid has a mean molecular weight of 380 to 480.
4 A «water-in-oil» emulsion according to any one of claims 1 to 3, in which the weight ratio of lanolin acid to natural basic a-amino-acid is from 98:2 to 82:18.
An emulsion according to claim 4 in which the said weight ratio is from 92 8 to 85:15.
6 An «oil-in-water» emulsion according to any one of claims 1 to 3, in which the weight ratio of lanolin acid to natural basic a-amino-acid is from 80:20 to 60:40.
7 An emulsion according to claim 6 in which said weight ratio is from 78:22 to 72:28.
8 An emulsion according to any one of the preceding claims, in which the emulsifier is present in an amount from 6 to 20 % by weight relative to the total weight of the emulsion.
9 An emulsion according to claim 8 in which the emulsifier is present in an amount from 10 to 18 % by weight.
An emulsion according to any one of the preceding claims, which also contains lanolin alcohol and/or hydrogenated lanolin in an amount from 6 to 12 % by weight 11 An emulsion according to claim 10 in which the lanolin alcohol and/or hydrogenated lanolin is present in an amount from 8 to 10 % by weight.
12 An emulsion according to any one of the preceding claims, in which the water phase is present in an amount from 20 to % by weight.
13 An emulsion according to claim 12 in which the water phase is present in an amount from 25 to 60 % by weight.
14 An emulsion according to any one of claims 1 to 11 in which the oil phase is present in an amount from 20 to 75 % by weight.
15 An emulsion according to claim 14 in which the oil phase is present in an amount from 20 to 55 % by weight.
16 An emulsion according to any one of the preceding claims, in Which the oil phase of the emulsion comprises at least one of paraffin oil, Purcellin oil, perhydrosqualene, or a solution of microcrystalline wax therein, sweet-almond oil, avocado oil, callophylum oil, lanolin, castor oil, caballine oil, lard oil, olive oil, a mineral oil which distils over the temperature range at atmospheric pressure of 250 C to 410 C, isopropyl palmitate, isopropyl, butyl or cetyl myristate, hexadecyl stearate, ethyl palmitate, a triglyceride of octanoic or decanoic acid and 60 cetyl ricinoleate.
17 An emulsion according to any one of the preceding claims, in which the oil phase contains a wax which is carnauba wax, Candelilla wax, beeswax, microcrystalline wax 65 or ozokerite.
18 An emulsion according to claim 1 substantially as hereinbefore described.
19 An emulsion according to claim 1 substantially as described in any one of the 70 Examples.
Process for the preparation of an emulsion as claimed in any one of the preceding claims, which comprises first dissolving the lanolin acid in the oil phase at a 75 temperature of about 80 C, whilst stirring, and second adding the water phase containing the natural basic,x-amino-acid at a temperature of about 80 C and then stirring the mixture sufficiently to cause emulsifica 80 tion.
21 Process according to claim 20, in which the emulsion is fined by passing it through a roll mill.
22 Process according to claim 20 sub 85 stantially as hereinbefore described.
23 An emulsion as defined in claim 1 whenever prepared by a process as claimed in claim 20 or 21.
24 A cosmetic composition which com 90 prises a «water-in-oil» or «oil-in-water» emulsion as claimed in any one of claims 1 to 19 and 23 together with a cosmetics adjuvant.
A composition according to claim 24, 95 in the form of a moisturising cream, a rouge or a make-up foundation.
26 A composition according to claim 25 in the form of a sun cream, or a face, hand or body cream 100 27 A composition according to any one of claims 24 to 26 which contains at least one dyestuff, pigment, perfume or preservative.
28 A pharmaceutical excipienó which 105 comprises a «water-in-oil» or «oil-in-water» emulsion as claimed in any one of claims 1 to 19 and 23 together with a pharmaceutical adjuvant.
29 A composition or excipient accord 110 ing to claim 24 or 28 substantially as hereinbefore described.
J A KEMP & CO, Chartered Patent Agents, 14, South Square, Gray’s Inn, London WC 1 R S Er.
Printed for Her Majestys Stationery Office by Burgess & Son (Abingdon), Ltd -1980.
Published at The Patent Office, 25 Southampton Buildings, London, WC 2 A l AY from which copies may be obtained.
GB7088/78A
1977-02-23
1978-02-22
Emulsions of the «water-in-oil» or «oil-in-water» type and cosmetic products using these emulsions
Expired
GB1570563A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
FR7705258A
FR2381558A1
(en)
1977-02-23
1977-02-23
NEW «WATER-IN-OIL» OR «OIL-IN-WATER» TYPE EMULSIONS AND COSMETIC PRODUCTS OBTAINED WITH THE HELP OF THESE EMULSIONS
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GB1570563A
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1980-07-02
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GB1570563A
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1977-02-23
1978-02-22
Emulsions of the «water-in-oil» or «oil-in-water» type and cosmetic products using these emulsions
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JPS53103987A
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CA1110970A
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CH628804A5
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DE2807607A1
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ES467222A1
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FR2381558A1
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2000-04-25
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2003-06-20
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Assignee
Title
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*
1969-06-12
1972-05-02
Lever Brothers Ltd
Extraction of lipid and cellular fractions from the stratum corneum of animal skin
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FR
FR7705258A
patent/FR2381558A1/en
active
Granted
1978
1978-02-17
US
US05/878,912
patent/US4337241A/en
not_active
Expired – Lifetime
1978-02-21
BE
BE185330A
patent/BE864148A/en
not_active
IP Right Cessation
1978-02-22
NL
NL7801983A
patent/NL7801983A/en
not_active
Application Discontinuation
1978-02-22
GB
GB7088/78A
patent/GB1570563A/en
not_active
Expired
1978-02-22
DE
DE19782807607
patent/DE2807607A1/en
not_active
Ceased
1978-02-22
CA
CA297,529A
patent/CA1110970A/en
not_active
Expired
1978-02-22
ES
ES467222A
patent/ES467222A1/en
not_active
Expired
1978-02-22
JP
JP1862578A
patent/JPS53103987A/en
active
Pending
1978-02-22
CH
CH192978A
patent/CH628804A5/en
not_active
IP Right Cessation
Also Published As
Publication number
Publication date
JPS53103987A
(en)
1978-09-09
CH628804A5
(en)
1982-03-31
CA1110970A
(en)
1981-10-20
US4337241A
(en)
1982-06-29
FR2381558A1
(en)
1978-09-22
FR2381558B1
(en)
1980-02-15
DE2807607A1
(en)
1978-08-24
ES467222A1
(en)
1978-11-16
NL7801983A
(en)
1978-08-25
BE864148A
(en)
1978-08-21
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Date
Code
Title
Description
1980-09-17
PS
Patent sealed [section 19, patents act 1949]
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