US4366099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating cosmetic oils so as to modify their properties and cosmetic compositions containing these oils
Assignee: L'Oréal SA
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Filing: 1980-04-25
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Granted: 1982-12-28
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Expires: 2000-04-25
Abstract
Abstract A process for reducing the volatility and improving the emulsifying power of an unsaturated or saturated cosmetic oil comprising heating the cosmetic oil, in the absence of a solvent and under an inert atmosphere, with a homopolymerizable and hydrophilic monomer in the presence of an initiator generating free radicals. The monomer is selected from the group consisting of N-vinylpyrrolidone, 2-hydroxymethyl acrylate, 2-hydroxymethyl methacrylate, acrylamide, methacrylamide, N-hydroxymethyl acrylamide, N-(carboxyhydroxy) methacrylamide, acrylic acid, methacrylic acid, 2-vinylpyridine, 4-vinylpyridine and a monomer having the formula, <IMAGE> wherein R is hydrogen or methyl, Y is O or NH, r' is methyl or ethyl and n is 2 or 3. The resulting modified oil is then purified to remove any insoluble nongrafted homopolymer.
Inventors
- 👤 Quintino Gaetani
- 👤 Christos Papantoniou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:01
CPC Classifications
C; C11; C11C; C11C3/00; A; A61; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/06; A61K8/18; A61K8/92; A61K8/922; A61Q; A61Q19/00; C09; C09K; C09K23/00; C09K23/16; A61Q1/00; A61Q1/02; A61Q1/10; A61Q5/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
131 words
A process for modifying the properties of an unsaturated or saturated cosmetic oil by grafting so as to reduce its volatility and to improve its emulsifying power, said process comprising heating in the absence of a solvent and under an inert atmosphere, a natural or synthetic cosmetic oil with a homopolymerisable and hydrophilic monomer in the presence of an initiator generating free radicals, said monomer being selected from the group consisting of N-vinylpyrrolidone, 2-hydroxymethyl acrylate, 2-hydroxymethyl methacrylate, acrylamide, methacrylamide, N-hydroxymethylacrylamide, N-(carboxyhydroxy)methacrylamide, acrylic acid, methacrylic acid, 2-vinylpyridine, 4-vinylpyridene and a monomer having the formula ##STR4## wherein R represents hydrogen or methyl, Y represents --O-- or --NH--, r' represents methyl or ethyl and n is 2 or 3, and purifying the resulting modified cosmetic oil so as to remove any insoluble nongrafted homopolymer.
Claim 2
Dependent Claim
131 words
A process for modifying the properties of an unsaturated or saturated cosmetic oil by grafting so as to reduce its volatility and to improve its emulsifying power, said process comprising heating in the absence of a solvent and under an inert atmosphere, a natural or synthetic cosmetic oil with a homopolymerisable and hydrophilic monomer in the presence of an initiator generating free radicals, said monomer being selected from the group consisting of N-vinylpyrrolidone, 2-hydroxymethyl acrylate, 2-hydroxymethyl methacrylate, acrylamide, methacrylamide, N-hydroxymethylacrylamide, N-(carboxyhydroxy)methacrylamide, acrylic acid, methacrylic acid, 2-vinylpyridine, 4-vinylpyridene and a monomer having the formula ##STR4## wherein R represents hydrogen or methyl, Y represents --O-- or --NH--, r' represents methyl or ethyl and n is 2 or 3, and purifying the resulting modified cosmetic oil so as to remove any insoluble nongrafted homopolymer.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein said cosmetic oil is heated at a temperature between 50° and 250° C.
Claim 4
Dependent Claim
19 words
The process of claim 1 wherein said cosmetic oil is heated at a temperature between 80° and 200° C.
Claim 5
Dependent Claim
22 words
The process of claim 1 wherein said heating is carried out for a period of time ranging from 1 to 15 hours.
Claim 6
Dependent Claim
22 words
The process of claim 1 wherein said heating is carried out for a period of time ranging from 2 to 10 hours.
Claim 7
Dependent Claim
27 words
The process of claim 1 wherein said cosmetic oil is selected from the group consisting of liquid petrolatum, olive oil, jojoba oil, purcellin oil and liquid lanolin.
Claim 8
Dependent Claim
43 words
The process of claim 1 wherein said cosmetic oil is selected from the group consisting of polyisobutylene, an ester of a fatty acid having 8-30 carbon atoms and an alcohol having 10-30 carbon atoms, an acid triglyceride having 8-21 carbon atoms and perhydrosqualene.
Claim 9
Dependent Claim
55 words
The process of claim 1 wherein said homopolymerizable and hydrophilic monomer is selected from the group consisting of a salt of acrylic or methacrylic acid with an inorganic or organic base, a salt of 2-vinylpyridine or 4-vinylpyridine with hydrochloric acid or lactic acid, and a quaternary ammonium derivative of a compound of the formula (I).
Claim 10
Dependent Claim
32 words
The process of claim 1 wherein said initiator generating free radicals is selected from the group consisting of azobisisobutyronitrile, dibenzoyl peroxide, di-tert.-butyl peroxide, dicumyl peroxide, tert.-butyl peroxy 2-ethylhexanoate and tert.-butyl peroxy 3,5,5-trimet-ylhexanoate.
Claim 11
Dependent Claim
24 words
The process of claim 1 wherein the weight ratio of said homopolymerizable and hydrophilic monomer to said cosmetic oil ranges from 0.03:1 to 0.5:1.
Claim 12
Dependent Claim
24 words
The process of claim 1 wherein the weight ratio of said homopolymerizable and hydrophilic monomer to said cosmetic oil ranges from 0.05:1 to 0.2:1.
Claim 13
Dependent Claim
26 words
The process of claim 1 wherein the weight ratio of said initiator generating free radicals to said homopolymerizable and hydrophilic monomer ranges between 0.01:1 to 0.2:1.
Claim 14
Dependent Claim
26 words
The process of claim 1 wherein the weight ratio of said initiator generating free radicals to said homopolymerizable and hydrophilic monomer ranges between 0.3:1 to 0.1:1.
Claim 15
Dependent Claim
14 words
A cosmetic oil modified by grafting and obtained by the process of claim 1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |