EP0152953A2
Expired / Lapsed
EP
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Water-in-volatile silicone emulsifier concentrates, water-in-volatile silicone emulsions that are useful in personal-care formulations and methods of making same
Assignee: Union Carbide Corp
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Filing: 1985-02-21
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Granted: —
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Expires: 2005-02-21
Abstract
Abstract Water-in-volatile silicone emulsifier coneentrates containing 2 to 30 wt. % water in the internal phase, 40 to 90 wt. % of a volatile cyclic silicone liquid such as the octamethylsiloxane cyclic tetramer, decamethylsiloxane cyclic pentamer or the dodecame- thylsiloxane cyclic hexamer and 5 to 40 wt. % of a polyoxyalkylene substituted silicone containing per molecule 5 to 100 dialkylsiloxy units, two trialkylsiloxy end blocking units and 1 to 16 polyoxyalkylene substituted alkylsiloxy units of the average formula: in which R is an alkyl group having 1 to 4 carbon atoms and R can individually be the same or different, wherein R o is a terminal group selected from the class consisting of hydrogen, alkyl, aryl, aralkyl and acyl radicals, n is an integer of 2 to 8, a is a number of 5 to 20 and b is 2 or 3. Said emulsifier concentrates are highly useful in preparing water-in-silicone personal-care emulsions by simply mixing same with desired personal-care components soluble therein followed by mixing with water in which water soluble personal-care components may be mixed. The personal-care components include the well known materials such as emollients, film formers, sun screen agents, moisture barriers, anti-perspi- rants and the like. Processes are also described for preparing the water-in-silicone emulsifier concentrates and emulsions mentioned above.
Inventors
- 👤 Mary Lou Gum
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 00:54
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/84; A61K8/89; A61K8/891; A61K8/894; A61K8/02; A61K8/04; A61K8/06; A61K8/064; A61K8/30; A61K8/58; A61K8/585; A61Q; A61Q15/00; A61Q17/00; A61Q17/04; A61Q19/00; A61Q5/00; A61Q5/12; C; C08; C08K; C08K5/00; C08K5/54; C08K5/549
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
205 words
A water-in-silicone emulsifier concentrate for mixing with water to form a water-in-silicone emulsion, said concentrate comprising: (a) 2 to 30 wt.% of water in the internal phase; (b) 45 to 90 wt.% of a volatile cyclic silicone liquid in the external phase, said cyclic silicone liquid having a normal boiling point of less than 250°C and having the formula: wherein R is alkyl having 1 to 4 carbon atoms and R can individually be the same or different and x is an integer of 4 to 6; and (c) 5 to 40 wt. % of a polyoxyalkylene substituted silicone having the average formula: MD y D° z M wherein M is a trialkylsiloxy unit having the formula R 3 SiO 0.5 , D is a dialkylsiloxy unit of the formula R2SiO, D° is a polyoxyalkylene substituted alkylsiloxy unit of the average formula: R° is a terminal group selected hydrogen, alkyl, aryl, aralkyl and acyl radicals, n is an integer of 2 to 8, a is a number of 3 to 20, b is 2 or 3, y is a number of 10 to 100, z is a number of 1 to 16, said percentages being based on the total weight of (a) (b) and (c).
Claim 2
Dependent Claim
205 words
A water-in-silicone emulsifier concentrate for mixing with water to form a water-in-silicone emulsion, said concentrate comprising: (a) 2 to 30 wt.% of water in the internal phase; (b) 45 to 90 wt.% of a volatile cyclic silicone liquid in the external phase, said cyclic silicone liquid having a normal boiling point of less than 250°C and having the formula: wherein R is alkyl having 1 to 4 carbon atoms and R can individually be the same or different and x is an integer of 4 to 6; and (c) 5 to 40 wt. % of a polyoxyalkylene substituted silicone having the average formula: MD y D° z M wherein M is a trialkylsiloxy unit having the formula R 3 SiO 0.5 , D is a dialkylsiloxy unit of the formula R2SiO, D° is a polyoxyalkylene substituted alkylsiloxy unit of the average formula: R° is a terminal group selected hydrogen, alkyl, aryl, aralkyl and acyl radicals, n is an integer of 2 to 8, a is a number of 3 to 20, b is 2 or 3, y is a number of 10 to 100, z is a number of 1 to 16, said percentages being based on the total weight of (a) (b) and (c).
Claim 3
Dependent Claim
83 words
Water-in-silicone emulsifier concentrate as claimed in claim 1 wherein the polyoxyalkylene chain, (OC b H 2b )a' of the polyoxyalkylene substituted silicone contains an average of at least 50 wt. % polyoxyethylene units, the amount of water is 5 to 20 wt. % or 8 to 20 wt. %, the amount of cyclic silicone is 50 to 85 wt. % or 60 to 80 wt. % and the amountpolyoxyalkylene substituted silicone is 10 to 30 wt. % or 12 to 28 wt. %.
Claim 4
Dependent Claim
42 words
Water-in-silicone emulsifier concentrate as claimed in claim 2 wherein the cyclic silicone liquid is Me 2 Si0 5 or octamethyltetrasiloxane and the polyoxyalkylene substituted silicone has the average formula: wherein y, z, b and a are as defined in claim 1 or
Claim 5
Dependent Claim
31 words
Water-in-silicone emulsifier concentrate as claimed in claim 3 containing about 10 wt. % water, about 74 wt. % dimethylsiloxane cyclic tetramer and about 16 wt. % of the polyoxyalkylene substituted silicone.
Claim 6
Dependent Claim
17 words
Water-in-silicone emulsifier concentrate as claimed in claims 2 to 4 wherein the cyclic silicone liquid is decamethylpentasiloxane.
Claim 7
Dependent Claim
80 words
Water-in-silicone personal care emulsion comprising (a) 25 to 98 wt. % or 60 to 90 wt. % water, (b) 1.6 to 75 wt. % or 5 to 40 wt. % of the volatile cyclic silicone liquid of claims 1b and 3 (c) 0.1 to 30 wt. % or 1 to 25 wt. % of a personal-care component; and (d) 0.3 to 5 wt. % or 1 to 5 wt. % of the polyoxyalkylene substituted silicone of claims lc and 2.
Claim 8
Dependent Claim
26 words
Water-in-silicone personal care emulsion as claimed in claim 6 wherein the personal care component is soluble in the cyclic silicone phase or in the aqueous phase.
Claim 9
Dependent Claim
44 words
Water-in-silicone personal care emulsion as claimed in claim 6 wherein the emulsion contains 2 or more personal care components at least one of which is soluble in the aqueous phase and at least another one of which is soluble in the cyclic silicone phase.
Claim 10
Dependent Claim
63 words
Water-in-silicone personal care emulsion as claimed in claims 6 to 8 wherein the personal care component is selected from ester waxes, oils and fats of animal or vegetable origin, fatty alcohols, fatty acids, alkyl esters of fatty acids, hydrocarbon oil and waxes, glycerol esters of fatty acids, CMC cellulose gums, quaternary N-substituted cellulose ethers, aliphatic polyols, and fatty acid amido- alkyl dialkyl amines.
Claim 11
Dependent Claim
53 words
Water-in-silicone emulsion hair conditioner comprising (a) 75 to 98 wt. % water, (b) 1 to 20 wt. % of the cyclic silicone of claims 1b and 3, (c) 0.5 to 3 wt. % of personal care component, and (d) 0.5 to 2 wt. % of polyoxyalkylene substituted silicone of claims 1c and 2.
Claim 12
Dependent Claim
23 words
Water-in-silicone emulsion hair conditioner as claimed in claim 10 wherein the personal care components include myristyl myristate, stearamidopropyl dimethyl amine and sorbitan oleate.
Claim 13
Dependent Claim
49 words
Water-in-silicone emulsion moisturizing cream comprising (a) 50 to 75 wt. % water, (b) 15 to 35 wt. % cyclic silicone of claims 1b and 3; (c) 5 to 15 wt. % personal care component and (d) 2 to 10 wt. % of polyoxyalkylene substituted of claims 1c and 2.
Claim 14
Dependent Claim
28 words
Water-in-silicone emulsion moisturizing cream as claimed in claim 12 wherein the personal care component includes stearic acid, myristyl myristate, glycerol, propylene glycol and a quaternized hydroxyethyl cellulose ether.
Claim 15
Dependent Claim
49 words
Water-in-silicone emulsion night cream comprising (a) 50 to 75 wt. % water, (b) 15 to 35 wt. % cyclic silicone of claims 1b and 3, (c) 5 to 15 wt. % personal care component and (d) 2 to 10 wt. % polyoxyalkylene substituted silicone of claims 1c and 2.
Claim 16
Dependent Claim
27 words
Water-in-silicone emulsion night cream as claimed in claim 13 wherein the personal care component includes stearic acid, stearyl stearate, glycerol monostearate and a quaternized hydroxyethyl cellulose ether.
Claim 17
Dependent Claim
45 words
Water-in-silicone emulsion hand and body lotion comprising (a) 70 to 85 wt. % water, (b) 5 to 15 wt. % cyclic silicone (c) 5 to 15 wt. % personal care component, (d) 1 to 15 wt. % polyoxyalkylene substituted silicone of claims 1c and 2.
Claim 18
Dependent Claim
31 words
Water-in-silicone emulsion hand and body lotion as claimed in claim 16 wherein the personal care component includes stearic acid, butyl stearate, stearyl stearate, glycerol monostearate and a carboxyl methyl cellulose gum.
Claim 19
Dependent Claim
57 words
Water-in-silicone emulsion anti-perspirant formulation wherein the personal care component is aluminium chlorohydrate comprising (a) 20 to 30 wt. % water, (b) 40 to 50 wt. % cyclic silicone liquid of claims lb and 3, (c) 15 to 25 wt. % aluminium chlorohydrate and (d) 5 to 25 wt. % polyoxyalkylene substituted silicone of claims 1c and 2.
References Cited (Backward Citations)
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