Drug – bio-affecting and body treating compositions – Effervescent or pressurized fluid containing – Organic pressurized fluid
Patent
1995-01-05
1999-05-04
Bawa, Raj
Drug, bio-affecting and body treating compositions
Effervescent or pressurized fluid containing
Organic pressurized fluid
424 45, 424DIG1, 424DIG2, 424 7011, 424 7802, 424 7015, 424 7016, 424 709, 514957, 514945, 132202, A61K 912
Patent
active
059002298
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to the use of a vinyl lactam-derived terpolymer in compositions intended for treating the hair and/or the skin, which compositions are pressurized as an aerosol and form a foam at the outlet of the aerosol device.
Cosmetic compositions which are pressurized in aerosol devices, under conditions such that they form a foam at the outlet, are well known and are used especially in treating the hair and/or the skin.
Such compositions will be referred to as "aerosol foam" in the remainder of the description.
These foams generally make it possible to obtain good spreading of the cosmetic compositions on the hair and, in addition, they are easy to use and are more economical in terms of the products.
These foams should be sufficiently stable so as not to be liquefied rapidly and should also disappear rapidly when massaged in, which serves to make the composition penetrate into the hair or to spread the former over the skin.
Anionic, nonionic or amphoteric surface-active agents may be used to form foams but, when used alone, these surface agents produce foams of application or they do not disappear after application at the time of massaging in.
Another means of forming foams is to use foaming polymers, but, in this case, difficulties of solubilizing the polymers in water are encountered or, if these polymers are sufficiently soluble, the cosmetic properties of the resulting foams can be further enhanced.
The Applicant has discovered that the use of a terpolymer consisting of: hair (shape-retention of the hairstyle) and imparts softness to the hair. The foam thus obtained also imparts enhanced softness to the skin.
The foams obtained in accordance with the invention are particularly stable and rigid for their use in the cosmetic treatment of the skin and of the hair, they possess film-forming properties and are particularly advantageous in terms of the softness which they impart to the hair and to the skin.
These foams also constitute a particularly suitable vehicle for applying cosmetic or dermatological active agents to the skin or to the hair.
A "cosmetic treatment" will refer in the remainder of the description to any treatment which aims to enhance the surface condition or esthetics of the skin or of the hair.
"Dermatological treatment" will refer to a treatment using active substances having a therapeutic or preventive effect towards a skin disease.
The subject of the invention is thus the use as foaming agent of a vinyl lactam-derived copolymer defined below.
Another subject of the invention consists of the cosmetic compositions intended for treating the skin or the hair, which are applied in the form of a foam from an aerosol device for treating the skin or the hair.
A further subject of the invention is a process for treating the skin and the hair which uses such a foam.
Other subjects of the invention will become apparent on reading the description and the examples which follow.
The copolymer used as foaming agent in the compositions intended to be applied to the skin or to the hair, in order to form a foam from a composition which is packaged in an aerosol device, is a terpolymer consisting of:
The vinyl lactam is in particular 2-vinylpyrrolidone.
The unsaturated carboxylic acid is preferably chosen from acrylic acid, methacrylic acid, itaconic acid or crotonic acid.
The alkyl acrylate or methacrylate containing at least 6 carbon atoms is preferably an acrylic or methacrylic ester containing from 8 to 18 carbon atoms.
The alkyl groups are preferably chosen from 2-ethylhexyl, octyl, lauryl and stearyl groups.
The polymers which may be used in accordance with the invention are known per se and may be prepared, for example, according to the process described in U.S. Pat. No. 5,015,708.
The terpolymers which may be used in accordance with the invention are preferably chosen from polymers containing: and 18.
The particularly preferred copolymers are chosen from the terpolymers of vinylpyrrolidone, of (meth)acrylic acid and preferably of acrylic acid and of lauryl methacrylate.
The
REFERENCES:
patent: 3405084 (1968-10-01), Bohac et al.
patent: 4300580 (1981-11-01), O'Neill et al.
patent: 4876083 (1989-10-01), Grollier et al.
patent: 4897262 (1990-01-01), Nandagiri et al.
patent: 5015708 (1991-05-01), Shih et al.
patent: 5164177 (1992-11-01), Bhatt et al.
patent: 5266303 (1993-11-01), Myers et al.
patent: 5620684 (1997-04-01), Dupuis
patent: 5830438 (1998-11-01), Dupuis
Oteri, R. et al. (1991). Cosmetics & Toiletries vol. 106 (Jul. issue), pp. 30-34.
"L'Oreal"
Bawa Raj
LandOfFree
Use of a vinyl lactam-derived terpolymer as a foaming agent in c does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Use of a vinyl lactam-derived terpolymer as a foaming agent in c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Use of a vinyl lactam-derived terpolymer as a foaming agent in c will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1868467