EP0357186A2
Expired / Lapsed
EP
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Skin and hair-care compositions
Assignee: Beecham Group PLC
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Filing: 1989-06-22
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Granted: —
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Expires: 2009-06-22
Abstract
Abstract A skin- or hair-care composition containing silica additionally comprises a C₂₋₄ alkyl ester of a di, tri- or tetrabasic carboxylic acid or hydroxy-carboxylic acid (optionally acetylated). The alkyl ester may be dissolved in an aqueous solvent system.
Inventors
- 👤 Edgar Beecham Products Fairhurst
- 👤 Helen Beecham Products Sayers
- 👤 Steven Beecham Products Poile
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 23:19
CPC Classifications
A; A61; A61Q; A61Q19/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/25; A61K8/30; A61K8/33; A61K8/37; A61P; A61P17/00; A61P17/08; A61P17/10; A61Q5/00; A61Q5/008; A61Q15/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
41 words
A skin- or hair-care composition comprising at least 0.5% w/w silica, a C₂₋₄ alkyl ester of a di-, tri- or tetrabasic carboxylic acid or hydroxycarboxylic acid, wherein the hydroxy residue is optionally acetylated, and, optionally, an inert diluent or carrier therefor.
Claim 2
Dependent Claim
41 words
A skin- or hair-care composition comprising at least 0.5% w/w silica, a C₂₋₄ alkyl ester of a di-, tri- or tetrabasic carboxylic acid or hydroxycarboxylic acid, wherein the hydroxy residue is optionally acetylated, and, optionally, an inert diluent or carrier therefor.
Claim 3
Dependent Claim
37 words
A skin- or hair-care composition comprising a silica, and a C₂₋₄ alkyl ester of a di-, tri- or tetrabasic carboxylic acid or hydroxycarboxylic acid, wherein the hydroxy residue is optionally acetylated, dissolved in an aqueous solvent system.
Claim 4
Dependent Claim
37 words
A skin- or hair-care composition comprising a silica, and a C₂₋₄ alkyl ester of a di-, tri- or tetrabasic carboxylic acid or hydroxycarboxylic acid, wherein the hydroxy residue is optionally acetylated, dissolved in an aqueous solvent system.
Claim 5
Dependent Claim
12 words
A composition according to claim 2, comprising at least 0.5% w/w silica.
Claim 6
Dependent Claim
20 words
A composition according to claim 2 or 3, wherein the aqueous solvent system is an aqueous lower alkanol or water.
Claim 7
Dependent Claim
14 words
A composition according to claim 4, wherein the aqueous solvent system is aqueous ethanol.
Claim 8
Dependent Claim
29 words
A composition according to any preceding claim, wherein the alkyl ester is selected from ethyl and butyl, and/or the polybasic acid is selected from citric, tartaric and succinic acids.
Claim 9
Dependent Claim
27 words
A composition according to claim 6, wherein the ester is selected from triethyl citrate, acetyl triethyl citrate, tributyl citrate, acetyl tributyl citrate, diethyl tartrate and diethyl succinate.
Claim 10
Dependent Claim
30 words
A composition according to any one of the preceding claims, wherein the silica has a mean particle size of 0.1 to 20µ, the particles consisting of aggregates of smaller particles.
Claim 11
Dependent Claim
22 words
A composition according to any one of the preceding claims, wherein the ester: silica ratio is at least 1:1, preferably about 2:1.
Claim 12
Dependent Claim
22 words
A composition according to any one of the preceding claims, wherein the silica is a hydrophobic silica such as silanised silica gel.
References Cited (Backward Citations)
No citation records indexed.
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