US3670073A - Hydrophilic polymer containing aerosol - Google Patents

Abstract

An aerosol composition is prepared containing a hydroxyl containing hydrophilic acrylate or methacrylate.

Description

United States Patent Shepherd et al.

[54] HYDROPHILIC POLYMER CONTAINING AEROSOL [72] Inventors: Thomas H. Shepherd, Hopewell; lh'ancls E. Gould, Princeton, both of NJ.

[73] Assignee: National Patent Development Corporation,

New York, NY.

[22] Filed: Sept. 9, 1970 21 Appl. No.: 70,890

Related US. Application Data 51 June 13, 1972 [52] US. Cl ..424/47, 424/59, 424/60 [51] lnt.Cl. ..A6lk 7/00, A6lk 7/02,A6lk 7/10 [58] Field of Search ..424/47, 59, 60

[56] References Cited UNITED STATES PATENTS 3,574,822 4/1971 Shepherd et al. ..424/47 Primary ExaminerShep K. Rose Att0meyCushman, Darby & Cushman [57] ABSTRACT An aerosol composition is prepared containing a hydroxyl containing hydrophilic acrylate or methacrylate.

9 Claims, No Drawings HYDROPHILIC POLYMER CONTAINING AEROSOL The present application is a continuation-in-part of application Ser. No. 567,856 filed July 26, 1966, now U.S. Pat. No. 3,520,949, of July 21, 1970, application Ser. No. 650,259 filed June 30, 1967, now abandoned, application Ser. No. 654,044 filed July 5, 1967 and is a division of application Ser. No. 743,626 filed July 10, 1968 now U.S. Pat. No; 3,574,822 ofApr. 13,1971.

Cosmetic manufacturers have sought in the past to produce compositions for use on human hair and skin which may be easily applied, exhibit no detrimental effect on the skin and retain their stability for a reasonable period of time. Some progress has been made in producing products of this type. However, there remains inherent defects in prior preparations such as creams, lotions, shampoos, dressings, sticks, and the like which impairs their cosmetic efiectiveness.

It has hitherto been proposed to employ lacquers for imparting a temporary set to the hair. However, since lacquers include a water-soluble film-forming ingredient, it has been extremely difficult to remove them from the hair. When it is desired to change the hair style, it sometimes becomes necessary to employ a special solvent or a powerful detergent composition, neither of which is readily available in the home. Lacquers have generally been considered unsatisfactory for application to the hair for this reason. A number of watersoluble film-forming resinous materials have also been proposed for application to the hair in order to set it. However, such water-soluble materials have not been completely satisfactory because of the tendency for the resultant film to become tacky and for the hair to lose its set when exposed to conditions of high humidity.

Furthermore, at present there is no satisfactory method for straightening kinky hair.

Accordingly, it is an object of the present invention to prepare novel cosmetic compositions.

Another object is to improve the application of cosmetic compositions to the body.

An additional object is to reduce the loss of flavors or essences from cosmetic compositions.

A corollary object is to develop cosmetic compositions which release a flavor or essence when wet.

An important object of the invention is to straighten kinky or curly hair so that it can be manipulated as desired.

A related object is to set hair of any type.

A further object is to develop a hair setting composition and method which will provide a permanent set even under conditions of high humidity.

A related object is to give hair a permanent that does not result in the treated hair developing static electrical charges under conditions of low humidity.

Another object is to apply a film having one or more of the above characteristics in relation to hair, but which can be readily removed.

A still further object is to develop novel aerosol compositions useful for application to the body.

Still further objects and the entire scope of applicability of the present invention will become apparent from the detailed description given hereinafter; it should be understood, however, that the detailed description and specific examples, while indicating preferred embodiment of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.

it has now been found that these objects can be attained by employing certain hydrophylic acrylate and methacrylate polymers in cosmetic compositions. For liquid cosmetics the hydrophylic polymer should not have substantial cross-linking (i.e., the cross-linking should not be sufficient to render the polymer insoluble in the solvent) while for powdered or creamy compositions cross-linked copolymers can be employed.

The term cosmetic is intended to embrace all types of products which are to be applied in any manner directly to the person for the purpose of cleansing or embellishment, including altering the appearance. Toilet soap and shaving soaps and creams are intended to be included in this definition as compositions cross-linked copolymers can be used.

' The hydrophylic monomer used to prepare the hydrophylic polymer is preferably a hydroxyalkyl monoacrylate or methacrylate such as 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, diethylene glycol monoacrylate, diethylene glycol monomethacrylate, hydroxypropyl acrylates and methacrylates, e. g. 2-hydroxypropyl acrylate, Z-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, tetraethylene glycol monomethacrylate, pentaethylene glycol, monomethacrylate, dipropylene glycol monomethacrylate, dipropylene glycol monoacrylate. The most preferred monomer is 2-hydroxyethyl methacrylate and the next most preferred monomer is 2-hydroxyethyl acrylate.

In preparing hydroxyalkyl acrylates and methacrylates a small amount of the diacrylate or dimethacrylate is also fonned. This need not be removed as it does not cause undue cross-linking.

When it is desired to shampoo out the hydrophylic polymer there are desirably included 0.1 to 15 percent of an ethylenically unsaturated acid to provide free acid groups. Typical examples of such acids include acrylic acid, methacrylic acid, itaconic acid, aconitic acid, cinnamic acid, crotonic acid, citraconic acid, mesaconic acid, maleic acid and fumaric acid. Less preferably there can also be used partial esters of polybasic acids such as mono Z-hydroxypropyl itaconate, mono 2-hydroxyethyl itaconate, mono 2-hydroxyethyl citraconate, mono-2-hydroxypropyl aconitate, mono 2- hydroxyethyl maleate, mono-2-hydroxypropyl fumarate, monomethyl itaconate, monoethyl itaconate, mono Methyl Cellosolve ester of itaconic acid (Methyl Cellosolve is the monomethyl ether of diethylene glycol), mono Methyl Cellosolve ester of maleic acid.

The use of such acid containing groups does not result in substantial cross-linking unless the polymer is heated for a substantial time above normal operating conditions for cosmetics or unless the polymerization time is prolonged using relatively high amounts of catalysts.

When crosslinked or cross-linkable hydrophylic polymers are prepared normally the cross-linking agent is preferably present in an amount of 0.1 to 2.5 percent, most preferably 0.1 to 1.0 percent, of the total monomers, although up to 15 percent of cross-linking agent can be used. Typical examples of cross-linking agents include ethylene glycol diacrylate, ethylene glycol dimethacrylate, l,2-butylene dimethacrylate, 1,3-butylene dimethacrylate, 1,4-butylene dimethacrylate, propylene glycol diacrylate, propylene glycol dimethacrylate, diethylene glycol dimethacrylate, dipropylene glycol diacrylate, divinyl benzene, divinyl toluene, diallyl tartrate, allyl pyruvate, allyl malate, divinyl tartrate, triallyl melamine, N,N'-methylene-bis-acrylamide, glycerine trimethacrylate, diallyl maleate, divinyl ether, diallyl mono ethylene glycol citrate, ethylene glycol vinyl allyl citrate, allyl vinyl maleate, diallyl itaconate, ethylene glycol diester of itaconic acid, divinyl sulfone, hexahydro-l,3,5-triacryltriazine, triallyl phosphite, diallyl ester of benzene phosphonic acid, polyester of maleic anhydride with triethylene glycol, polyallyl sucrose, polyallyl glucose, e.g., diallyl sucrose and triallyl glucose, sucrose diacrylate, glucose dimethacrylate, pentaerythritol diacrylate, sorbitol dimethacrylate.

The cross-linked polymers are characterized by being insoluble in the solvents. Typical examples of suitable crosslinked hydrophilic polymers are those in Wichterle U.S. Pat. 2,976,576, Wichterle U.S. Pat. No. 3,220,960, e.g., examples Ill, V, VI, VII, and IX, Wichterle U.S. Pat. No. 3,361,858, examples l, 2, 3, 6, 8, 9, l0, and 11, as well as copolymers of 30 parts ethylene glycol with 0.1 part ethylene glycol bismethacrylate; 54.7 parts ethylene glycol monomethacrylate, 17.2 parts diethylene glycol monomethacrylate and 0.6 parts of diethylene glycol dimethacrylate; parts ethylene glycol monomethacrylate, parts methacrylamide and 0.4 parts of ethylene glycol bis-methacrylate; 97 parts ethylene glycol monomethacrylate, 0.25 part diethylene glycol dimethacrylate and 0.25 part ethylene glycol bis-methacrylate; 60 parts ethylene glycol monomethacrylate, 19.7 parts diethylene glycol monomethacrylate, 0.3 part ethylene glycol bismethacrylate, 99.6 parts ethylene glycol monomethacrylate and 04 part ethylene glycol bismethacrylate, 99.5 parts ethylene glycol monomethacrylate and 0.4 part ethylene glycol bis-methacrylate, 99.7 parts ethylene glycol monomethacrylate and ethylene glycol bis-methacrylate; 98.7 parts ethylene glycol monomethacrylate and 0.3 part diethylene glycol dimethacrylate. Details for making the last 9 copolymers set forth above are given in Wichterle application Ser. No. 762,618 filed Sept. 25, 1968, entitled "Anhydrous Sparingly Cross-Linked Hydrophilic Copolymers." They can also be prepared using the procedures set forth in our parent application Ser. No. 654,044 or the procedures employed in the specific examples below.

Unless otherwise indicated all parts and percentages are by weight.

The hydrophylic polymers of this invention possess unique properties which are capable of improving a wide range of cosmetic products. In particular, they impart to such products a wide range of unusual and desirable properties and effects on the skin and hair, such as lubricity, emolliency, softening and smoothing, resistance to and protection against the drying effects of alcohol solutions, resistance to water and/or soap or detergents and water, freedom from tactile greasiness or oiliness due to mineral and/or vegetable oils,

Make-up powders for the face may benefit from the presence of the polymers. These powders usually comprise an opacifying agent (clay, titania, magnesia, zinc oxide, etc.,) a slip material (talc, metal stearates, etc.,), an adherent material (stearates, clay, etc.) and an absorbent (chalk, calcium carbonate, kaolin, etc. The hydrophilic polymers are capable of replacing in whole or in part, metal salts and oxides like chalk, kaolin, magnesium carbonate, talc, titania, magnesium stearate, zinc oxide, zinc oxide, zinc stearate and the like. An advantage of such a substitution is the reduced incidence of undesirable dermatological reactions. For example, in the case of magnesium carbonate, a widely used ingredient, it is known that some persons are sensitive to the presence of trace amounts of elements like selenium, arsenic, or mercury which tend to be present in the magnesium carbonate owing to the difficulty of purifying it. The gravity of the problem is underlined by the fact that amounts of selenium as low as one part per million may be detrimental. Other conventional ingredients, if not sufficiently fine, may give rise to mechanical irritation. In the case of ingredients like talc, by omitting it there is eliminated its characteristic earthy odor, which otherwise must be masked. Of further interest is the effectiveness of the polymers for sorbing oil, this properly being useful in face powders for combating oily skin, especially on the nose. By sorption is meant the capacity of the polymeric powder to absorb oily, fatty, greasy, waxy and aqueous materials.

In addition to the foregoing capabilities, the polymers are of benefit to loose face powder compositions by virtue of their excellent adherence to surfaces including the skin by the degree to which their particle size may be varied, and by the extent to which their flufi'iness or bulk density may be changed. Therefore, they are useful in place of the adherent agents noted. By incorporating conventional amounts of a desired color and a desired perfume, a complete, esthetically suitable face powder may be made which will inherently have a mat effect, and which may be used per se or serve as a base, with or without the color and perfume, to which only minor additions need be made to obtain desired finished powders to suit different types of skin.

In sunscreen products, including suntan products and leg paints, the hydrophylic polymers provide lubricity without greasingess, and in addition, the adherence of the product to the skin is enhanced, and its water-removability improved. As

these preparations are frequently in dispersion form, a further advantage resides in the stability which is imparted to the dispersions by the presence of the polymers. Of interest in this connection are simple 2-, 3-, or 4- component sunscreen preparations made by mixing a base like petrolatum or zinc oxide or lanolin with the hydrophilic polymer and water. A sunburn preventive can be added to help block out harmful radiation, including such agents as acetanilide, cholestrol, paminobenzoic and salicylic acid salts, quinine salts, and the like. These components form compatible mixtures. Suntan make-up in loose powder form for the face and other areas can be benefitted in the manner described for make-up powder.

The polymers of this invention are also effective in hair preparations.

The present invention overcomes the disadvantages pointed out supra of previous hair preparations. Even though the hydrophylic polymers of the invention are insoluble in water, they are easily removed, e. g. with conventional shampoo.

Hair sprays produced according to this invention comprise a soluble hydrophylic polymer such as previously described and a non-toxic organic solvent. A propellant is also employed in the aerosol formulations. As the organic solvent there can be employed alcohols, particularly lower aliphatic saturated alcohols e. g. ethyl alcohol, isopropyl alcohol, propyl alcohol, glycols, e. g. ethylene glycol diethylene glycol, propylene glycol and dipropylene glycol, glycerine, ethylene glycol methyl ether, ethylene glycol ethyl ether, n-propylene glycol monomethyl ether, n-propylene glycol monoethyl ether, isopropylene glycol monomethyl ether, isopropylene glycol monoethyl ether, ethyl acetate. Mixtures of these solvents with monor amounts of water, e. g. up to 30 percent water, can be also employed. Glycols and glycerine and similar polyhydric alcohols act as plasticizers for the hydrophylic polymer.

Generally the amount of hydrophylic polymer will be about 0.5 to 10 percent, preferably 0.75 to 5 percent, by weight of the total hair spray composition.

Hair setting and hair straightening compositions are also produced according to the invention using 0.5 to 10 percent of the hydrophylic polymer in the solvent.

Such compositions not only provide the desired temporary setholding characteristics and maintains the hair in the desired configuration until removed, but do so even when the hair is exposed to conditions of high humidity without the development of any appreciable surface track. In addition, the hair thus treated, despite its resistance to moisture, is remarkably free from any tendency to develop static electrical charges when combed or brushed under conditions of low humidity. Furthermore, the treated hair is capable of being reset merely by use of water-dampened comb. Finally, the film on the hair may readily be removed, despite its resistance to moisture, by a mild shampoo.

The amount of solvent is usually 10 percent or more of the total hair preparation. When a propellant is present the solvent is normally not over 60 percent and is preferably 25 to 40 percent of the total hair preparation by weight.

When the hydrophylic polymer is packaged in an aerosol container the propellant should be sufficient to force the composition out of the container as a spray. The propellant can vary considerably, but usually is about 25 to 8 5 percent, preferably 50 to 70 percent, of the total hair spray composition. As the aerosol propellants there can be used compressed gasses such as carbon dioxide, nitrous oxide and nitrogen, liquified volatile hydrocarbons such as propane, n-butane, isobutane, Z-methyl butane and fluorinated compounds including perhalogenated compounds and fluorinated hydrocarbons such as dichlorodifluoromethane, trichlorofluoromethane, l,2-dichlorotetrafluoroethane, octofluorocyclobutane, chlorodifluoromethane, l l difluoroethane, l-chlorol l-difluoroethane. These fluorinated compounds are available under the names Freon and Genetron. The propellant should contain a substantial amount of volatile material boiling at not over 20 C., but there can also be present a significant amount of less volatile material boiling up to 50 C., e.g., methylene chloride can be present as a substantial part of the propellant. Of course perfumes or other essences can be included in the formulations.

As catalysts for carrying out the polymerization there is employed free radical catalyst in the range of 0.05 to 1 percent of the polymerizable hydroxyalkyl ester, for example, the preferred amount of catalyst is 0.1 to 0.2 percent of the monomer. Typical catalysts include t-butyl peroctoate, benzoyl peroxide, isopropyl percarbonate, methylethylketone peroxide, cumene hydroperoxide and dicumylperoxide. Irradiation, e.g., by ultra violet light or gamma rays, also can be employed to catalyze the polymerization. Polymerization can be done at 20 to 150 C., usually 40 to 90 C.

When cross-linked polymers are prepared the method of polymerization is not critical and the monomers can be polymerized in water, by suspension polymerization, in organic solvent or without any solvent. However, when hydrophylic soluble thermoplastic polymers are desired they are preferably prepared by suspension polymerization of the hydrophylic monomers in a non-polar medium such as silicone oil, mineral oil, xylene, toluene, benzene or the like. Alternatively they can be polymerized while in solution in ethyl alcohol, methyl alcohol, propyl alcohol, isopropyl alcohol, formamide, dimethyl sulfoxide or other appropriate solvent.

In the suspension polymerization procedure the catalyst containing monomer is dispersed in the non-polar medium in the form of small droplets which are polymerized to form finely divided spheres or beads. The beads are dissolved in the polar organic solvents, e.g., ethyl alcohol, isopropyl alcohol, ethyl alcohol-water (e.g. 95:5 or 70:30), glycols and glycol ethers for use as sprays, etc. or are mixed with other ingredients to make creams, powders or the like.

Suspension polymerization is preferably carried out at 50l05 C. until bead formation is completed. The ratio of suspension oil to monomer can be varied widely, but preferably is from 5:1 to 20:1. As stated the catalyst to monomer ratio is preferably from 0.05 to 1.0 parts per 100 parts of monomer.

One method of incorporating the hydrophylic polymeric powders with cosmetic ingredients or essences dissolved in an appropriate solvent is to place the mixture on a mechanical roller so that the solution becomes intimately mixed with the powder. The mixture is dried by air evaporation or forced heat. Upon evaporation of the solvent the cosmetic ingredients and/or essences are retained by the powder.

EXAMPLE 1 Into a flask equipped with an agitator and a heating mantle was charged 1,000 grams of silicone oil; polydimethyl silicone) 100 grams of Z-hydroxyethyl methacrylate and 0.33 grams of isopropyl percarbonate. The flask was placed under a nitrogen atmosphere and the contents were rapidly agitated and heated to 100 C. After minutes at 100 C., the polymer slurry obtained was filtered hot to isolate the polymer. The polymer powder was reslurried in 300 ml. of xylene, filtered and dried. A 98 percent yield of 2 to 5 micron particle size powder was obtained.

EXAMPLE 2 The thermoplastic, solvent soluble poly-(2-hydroxyethyl methacrylate)polymeric powder formed in example 1 was mixed with an oil of orchids perfume essence and the resultant mixture placed on a mechanical roller for approximately 8 hours. The polymeric powder thus absorbed the essence. The mixture was filtered and the residue dried at room temperature.

EXAMPLE 3 Example 1 was repeated using xylene in place of the silicone oil. The amount of 2-hydroxyethyl methacrylate was increased from 100 grams to 300 grams and the quantity of isopropyl percarbonate was increased to 0.99 gram. An 85 percent yield of polymer beads was obtained.

EXAMPLE 4 Example 1 was repeated using mineral oil in place of the silicone oil, the amount of 2-hydroxyethyl methacrylate was increased from 100 grams to 200 grams and the quantity of isopropyl percarbonate was increased from 0.33 to 0.66 gram. A 98 percent yield of polymer beads ranging in diameter from 2 to 5 microns was obtained.

EXAMPLE 5 800 grams of ethylene glycol monomethyl ether, 180 grams of 2-hydroxyethyl methacrylate, 20 grams of acrylic acid and 2 grams of t-butyl peroctoate were charged into a flask. The solution was heated and stirred under a carbon dioxide atmosphere at C. for 6 hours. The thermoplastic hydrophylic polymer formed was precipitated by pouring the reaction solution into 10 liters of rapidly agitated water. The precipitated polymer was isolated by filtration and dried. The product of this example while thermoplastic and solvent soluble has the capability of curing to crosslinked solvent insoluble polymer by further heating, particularly if additional catalyst is added. In contrast, the polymers of examples 1, 3, and 4 are permanently thermoplastic and solvent soluble. The copolymers formed in examples 7-13 are all cross-linked.

EXAMPLE 6 The procedure of example 1 was repeated replacing the 2- hydroxyethyl methacrylate by grams of 2-hydroxypropyl methacrylate to produce a thermoplastic solvent soluble hydrophylic finely divided bead polymer.

EXAMPLE 7 This example shows the preparation of a cross-linked polymer prepared with the aid of a foaming agent. The use of a foaming agent, e.g., sodium bicarbonate, potassium bicarbonate, azodicarbonamide, benzene sulfonyl hydrazide, azobisisobutyronitrile, etc. aids in preparing polymers which are in the form of a foam which is easily disintegrated to form a fine powder by means of a shearing action. Quantities of 0.5 to 10 grams of foaming agent per 100 grams of reactants are adequate 100 grams of 2-hydroxyethyl methacrylate, 0.15 grams of tbutyl peroctoate, 0.20 grams of ethylene glycol dimethacrylate and 1 gram of sodium bicarbonate were heated to 70 C. and the resulting solid friable polymeric foam ground into a powder of 80 mesh size (U.S. Standard Sieve).

EXAMPLE 8 100 grams of purified 2-hydroxyethyl methacrylate was mixed with 0.2 grams of ethylene glycol dimethacrylate and 1 gram of benzoyl peroxide. The mixture was sprayed via a nozzle which forms fine droplets into a chamber containing nitrogen at C. After spraying of the monomer was concluded, 36 grams of polymer beads were recovered.

EXAMPLE 9 An aqueous solution was prepared from 15 percent acrylamide, 10 percent ethylene glycol monomethacrylate, 0.1 percent ethylene glycol dirnethacrylate and the balance water. One liter of this solution was mixed with 10 ml. of an aqueous 2 percent solution of sodium thiosulfate and 15 ml. of an aqueous 2 percent solution of ammonium persulfate and the mixture allowed to polymerize at room temperature. The resulting gel was then finely divided to give a cross-linked hydrophylic polymer.

EXAMPLE 10 A polymerization mixture was prepared from 15 parts methacrylamide, 80 parts ethylene glycol monomethacrylate, 0.4 parts ethylene glycol bis-methacrylate and 5 parts of dibenzoyl peroxide. The mixture was rotated at 400 rpm. in a helium atmosphere at 80 C. for 6 hours to give a cross-linked copolymer. The polymer was then finely divided (below 100 mesh).

EXAMPLE 11 97 parts of ethylene glycol monomethacrylate, 0.25 part ethylene glycol bis-methacrylate, 0.25 part diethylene glycol bis-methacrylate, 2 parts ethylene glycol and 0.2 part diisopropyl percarbonate were rotated 80 minutes at 420 rpm. in a carbon dioxide atmosphere at 60 C. to produce a cross-linked hydrophylic copolymer. The polymer was then finely divided, i.e., to less than 100 mesh.

EXAMPLE l2 15 parts of a monomer mixture consisting of 99.7 percent ethylene glycol monomethacrylate and 0.3 percent ethylene glycol bis-methacrylate as a cross-linking agent, 85 parts glycerol and 0.1 part diethyl percarbonate as a catalyst was heated at 65 C. for 20 minutes to form a cross-linked hydrophylic polymer.

EXAMPLE 13 50 ml. of a mixture of 98 percent ethylene glycol monomethacrylate, 0.3 percent diethylene glycol bismethacrylate and 1 percent glycol were mixed with 50 ml. formamide and an amount of azo-bis-isobutyronitrile corresponding to 0.2 percent of the combined monomers. Polymerization was performed at 75 C. for 50 minutes to give a cross-linked hydrophylic polymer.

EXAMPLE 14 A hair setting composition was prepared from 1.90 parts of the poly 2-hydroxyethyl methacrylate prepared in example 1, 0.10 parts of perfume (oil of orchids) and 28 parts of ethyl alcohol. This solution (50 percent of the total formulation) was packaged in a conventional aerosol pressure can container together with 45.5 parts (32 percent of the total formulation) of monofluorotrichlormethane and 24.5 parts (18 percent of the total) of methylene chloride.

The aerosol was sprayed on hair held to a desired configuration and allowed to dry, the formulation was found to provide satisfactory set-holding characteristics even under conditions of high humidity. The sprayed hair was natural looking, nonsticky, non-static and exhibited holding power for a relatively long period of time.

EXAMPLE 15 In a bottle equipped with an agitator and a heating mantle was charged 20 liters of 2-hydroxy ethyl methacrylate, 50 liters of methanol, 30 liters of water and grams of t-butyl perocotate. The kettle was flushed with carbon dioxide and the contents were rapidly agitated and heated to 75 C. After 8 hours at 75 C. the polymer, representing an 85 percent polymeric con version, was isolated. The polymer solution was precipitated from 500 liters of water, filtered and dried at room temperature.

EXAMPLE 16 A sun screen aerosol was made from 1 part of the poly 2- hydroxyethyl methacrylate prepared in example 1, 30 parts of 95 percent ethyl alcohol, 0.5 part of 2-ethoxyethyl-p-methoxy cinnamate and 68.5 parts of dichlorotetrafluoroethane. The aerosol was sprayed from the container onto the body and acted as an effective sun screen.

EXAMPLE l7 1 part of hexachlorophene was absorbed on 10 parts of the finely divided cross-linked hydrophylic methacrylate polymer prepared in example 1 1. There was blended in 20 parts of talc and the deodorant powder was packaged in an aerosol container together with 30 parts of chlorotrifluoromethane and 10 parts of methylene chloride.

The ratio of polymer to talc can range from 10 to parts of polymer to 90 to 10 parts of talc or the tale can be omitted.

EXAMPLE 18 20 parts of aluminum chlorohydrol, in parts of water, 10 parts of hydroethyl methacrylate containing 1 part of perfume (e. g. rose oil) and 0.04 part of isopropyl percarbonate were polymerized at 70 C. for two hours. The solid obtained was ground to a powder less than 300 mesh and was useful as a deodorant by applying the same to the body.

EXAMPLE 19 A face powder was made from 10 parts precipitated chalk, 75 parts talc, 5 parts of the hydrophylic polymer of example I, 5 parts zinc oxide and 5 parts zinc stearate.

EXAMPLE 20 A loose face powder was prepared from 3 parts kaolin, 70 parts talc, 1.5 parts magnesium stearate, 2 parts of D & C Red. No. 2 (lake) 20 percent in talc, D & C Red. No. 3 (lake) 10 percent talc, 1 part yellow iron oxide 20 percent in talc and 1 part rose oil absorbed in 4.5 parts of the hydrophylic polymer of example 7.

EXAMPLE 21 A baby powder was prepared from 80 parts tale, 9 parts zinc stearate, 5 parts boric acid and 0.25 part perfume absorbed in 5.75 parts of the hydrophylic polymer prepared in Example 1.

What is claimed is:

l. A polymer acrylate or methacrylate selected from the group consisting of hydrophilic polymers of hydroxy lower alkyl acrylates, hydroxy lower alkyl methacrylates, hydroxy lower alkoxy lower alkyl acrylates and hydroxy lower alkoxy loWer alkyl methacrylates packaged as a composition in an aerosol container also containing a propellant.

2. A polymer composition according to claim 1 wherein the acrylate or methacrylate is a member of the group consisting of hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate and hydroxypropyl methacrylate.

3. A packaged composition according to claim 2 wherein the acrylate or methacrylate is 2-hydroxyethyl methacrylate.

4. A packaged composition according to claim 2 wherein the aerosol is in the form of a powder except for the propellant.

5. A packaged composition according to claim 2 wherein the aerosol includes an organic solvent for the hydrophilic polymer.

6. A packaged composition according to claim 5 wherein the solvent is a lower alkanol.

7. A packaged composition according to claim 2 in the form of a dry powder except for the propellant said composition and containing, retained in the dry polymer, a flavor, essence or deodorant releasable from the polymer when the polymer is wet.

8. A polymer composition according to claim 1 wherein there is included a sun screening composition.

9. A composition according to claim 8 wherein the sun screening composition is 2-ethoxyethyl-p-methoxy cinnamate.

Disclaimer 3,670,073.-Th0mas H. Shepherd, Hopewell, and Fmneis E. Gould, Princeton, PHILIC POLYMER CONTAINING AEROSOL.

NJ. HYDRO Patent dated June 13, 1972. Disclaimer filed. Sept. 1, 1972, by the assignee, National Patent Development Comm-amen.

Hereby disclaims the portion of the term of the patent subsequent to Apr. 13, 1988.

[Ofiieial Gazette October 3,1972.]

Claims (8)

1. 2. A polymer composition according to claim 1 wherein the acrylate or methacrylate is a member of the group consisting of hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate and hydroxypropyl methacrylate.
2. 3. A packaged composition according to claim 2 wherein the acrylate or methacrylate is 2-hydroxyethyl methacrylate.
3. 4. A packaged composition according to claim 2 wherein the aerosol is in the form of a powder except for the propellant.
4. 5. A packaged composition according to claim 2 wherein the aerosol includes an organic solvent for the hydrophilic polymer.
5. 6. A packaged composition according to claim 5 wherein the solvent is A lower alkanol.
6. 7. A packaged composition according to claim 2 in the form of a dry powder except for the propellant said composition and containing, retained in the dry polymer, a flavor, essence or deodorant releasable from the polymer when the polymer is wet.
7. 8. A polymer composition according to claim 1 wherein there is included a sun screening composition.
8. 9. A composition according to claim 8 wherein the sun screening composition is 2-ethoxyethyl-p-methoxy cinnamate.