Abstract:
This disclosure introduces the use of an isophorone diisocyanate urethane polymer of naturally occurring castor oil as an active ingredient for skin and personal care compositions and products.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     Castor Oil and Castor Oil derivatives have been used for many years in cosmetic formulations. Esters of Castor Oil have been used as emollients in creams and lotions. Ethoxylated Castor Oils have been used as emulsifiers and solubilizing agents in the textile and cosmetic industries for decades. Ethoxylated/Hydrogenated Castor Oils have also functioned as waxes, emulsifiers and solubilizers and have been in use for the past thirty years in the coating industry where long lasting sheen and durability were of paramount concern. Urethanes based on methylene bisdiisocyanate have been used in the potting industry based on Castor Oil as well. 
     In the cosmetic industry, Castor Oil derivatives have appeared as amides to increase viscosity and enhance &#34;conditioning&#34; to hair formulations. Castor Oil amides have also functioned as emulsifiers. Sulfosuccinates based on derivatives of Castor Oil have been used for their mildness, foaming ability and anti-dandruff properties in addition to thickening. Betaines as well as amine oxides derived from the dimethylamidopropyl amine derivatives of castor oil have found use in the hair industry as viscosity improvers as well as conditioners, specifically when used on the acid side. 
     Castor Oil itself has been used as a vehicle in lipstick formulations where its low cost and description as a vegetable derived raw material, its low inherent toxicity and dispersing ability for pigments make it to be an ideal ingredient. Castor Oil is also used in lip glosses widely because of its characteristic property of sheen. 
     In spite of the wide use of Castor Oil in lipsticks and lip glosses there is a need for raw material in cosmetic formulations, hopefully, to increase adhesion, durability, gloss, increase product stability and exhibit a low order of toxicity. The present invention fulfills the long standing need for a safe, effective cosmetic ingredient demonstrating zero comedogenicity, lack of eye irritation low skin irritation and extremely low LD 50. To date, no existing polymers when evaluated against the subject invention exhibited similar overall familiar properties. 
     2. Prior Art 
     a) U.S. Pat. No. 4,797,273 introduces water-in-oil microemulsions suitable for cosmetic use containing moisturizing agents or sunscreens. 
     b) U.S. Pat. No. 4,839,161 teaches a therapeutic composition for alleviating or preventing sun-induced desquamation. 
     c) U.S. Pat. No. 4,847,072 presents pharmaceutical compositions containing tocopherol sorbate which are useful in preventing damage to the skin caused by chronic or acute UV exposure. 
     d) U.S. Pat. No. 4,971,800 shows methods and compositions for enhancing the cutaneous penetration of topically or transdermally delivered pharmacologically active agents. 
     e) U.S. Pat. No. 5,000,945 preaches UV and UVB absorbing compounds. 
     f) U.S. Pat. No. 5,008,100 describes oil-in-water emulsions containing polyethylene as sunscreen compositions. 
     g) U.S. Pat. No. 5,017,365 shows sunscreen compositions and an application system. 
     h) U.S. Pat. No. 5,032,390 use ZnO in an anti-suntan cosmetic composition. 
     i) U.S. Pat. No. 5,045,317 deals with methods and compositions for enhancing the cutaneous penetration of topically or transdermally delivered pharmacologically active agents. 
     j) U.S. Pat. No. 5,051,260 is a C.I.P. of U.S. Pat. No. 4,971,800 again stressing cutaneous penetration of topically or transdermally delivered pharmacologically active agents. 
     k) U.S. Pat. No. 5,089,250 is titled &#34;Cosmetic Containing Benzotiazole Diorganopolysiloxanes&#34;. 
     l) U.S. Pat. No. 5,116,604 teaches sunscreen compositions containing novel neopentanoate esters. 
     m) U.S. Pat. No. 5,207,998 discloses sun care compositions. 
     n) U.S. Pat. No. 5,028,011 indicates various ultraviolet resistant sunscreen formulations. 
     o) U.S. Pat. No. 5,219,558 provides photoprotection compositions having improved substantively to prevent sunburn and sun-induced premature skin aging. 
     p) U.S. Pat. No. 5,300,694 introduces alkoxylated compounds then use in cosmetic stick formulation. 
     q) U.S. Pat. No. 5,302,376 relates to a cosmetic emulsion screening out UV radiation. 
     r) U.S. Pat. No. 5,338,539 presents benzofuran derivatives. 
     OBJECTS AND SUMMARY OF THE INVENTION 
     Castor Oil has long been used in skin and hair formulations. Its use in these formulations suffers from odor and color problems, the bane of skin and hair formulations. 
     The use of the isophorone diisocyante urethane polymer derived from naturally occurring castor oil introduces a novel compound for these formulations to enhance adhesion, durability, emolliency, as well as gloss to skin and hair products. 
     This polymer offers new unanticipated synergistic results over and above the use of castor oil, castor oil esters, castor oil ethoxylates and propoylates and linear polyoxypropylene glycol urethanes. 
     The polymer herein introduced for this use exhibits decreased odor and diminished color making it cosmetically more desirable material than pure castor oil. It exhibits outstanding adhesion to skin and hair, exhibits long lasting emolliencey, enhances gloss for longer periods of time than Castor Oil Esters and other Castor Oil derivatives, assists in enhancing color dispersion, aids in durability, increases payoff in lipsticks and creams, helps to form an impenetrable water film, prevents feathering in lipsticks and helps eliminate bleeding in lipsticks. The urethane polymer of castor oil based on this method of synthesis forms a unique additive for cosmetics which is completely non-comodegeic, nonirritating to the skin and eyes and enhances the life and efficiency of a given cosmetic formulation. 
     This unique castor oil derivative in lipstick formulations gives the following results: 
     1. Immensely better dispersion of pigments (as opposed to straight castor oil). This results in an enhancement of color using less pigment therefore reducing raw materials of formulations. 
     2. Better fill in of the lips using this product as opposed to Castor oil. 
     3. Increased sheen and gloss as opposed to Castor oil. 
     4. Better application (glide) with the use of the present polyurethane castor oil formulated lipstick. 
     5. Increased adhesion and longer lasting lipsticks when based on the present urethane castor oil polymer as opposed to castor oil alone. 
     6. Increased moisturization of lipsticks when the urethane castor oil polymer is incorporated into lipsticks rather than straight castor oil. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The present invention introduces the use of the reaction product of isophorone disocyanate and purified castor oil in the preparation of cosmetic formulations for the purpose of increased adhesion and tenacity as well as durability to the skin and hair. The inclusion of the present invention in a formulation provides a finished product which is resistant to removal from the skin and hair by repeated washing. Additionally higher gloss in lipsticks and lip glosses have been found when compared to use of castor oil itself as well as other linear polymers. 
     The preferred embodiment of the invention is as follows: ##STR1## 
     Naturally occurring Castor Oil has the following composition: 
     
         ______________________________________          %______________________________________  Oleic     7.4  Linoleic  3.1  Linolenic 1.9  Ricinoleic            87.0  Dihydroxystearic            0.6            100.0______________________________________ 
    
     The stoichiometric use of two moles of Castor Oil to one mole of isophorone diisocyanate gives the resulting preferred embodiment of the invention as shown above. 
     Attached hereto is a technical bulletin giving the physical and chemical data of the instant invention. 
     Acute oral toxicity test results in rats, under the Federal Hazardous Substances Act according to definitions listed in 16 CFR 1500.3 (c)(2)(i) indicate no toxicity. 
     Eye irritation tested pursuant to the Federal Hazardous Substances Act, 16 CFR, Section 1500.42 indicate that the material is not considered as primary eye irritant. 
     Tests of the material pursuant to the Federal Hazardous Substances Act, 16 CFR, Section 1500.3 (c)(4) show that the material introduced is not a primary skin irritant and is non-comedogenic. 
     Following are sample formulations using the instant invention: 
     
         ______________________________________TECHNICAL BULLETIN______________________________________POLYDERM PPI-COChemical Name      Castor Oil Polymer with 3-Isocyanatomethyl-      3,5,5-Trimethylcyclohexyl IsocyanateINCI Name  Castor Oil/IPDI CopolymerCA Index Name      Castor Oil, Polymer with 5-Isocyanato-1-      (Isocyanatomethyl)-1,3,3-TrimethylcyclohexaneCAS Number 68955-90-8SPECIFICATIONS:Appearance @ 25° C.           Clear Viscous LiquidColor           YellowOdor            Mild OrganolepticSpecific Gravity (Typical)           0.980Pounds per Gallon           8.16Refractive Index @ 25° C.           1.4825Molecular Weight (Approx.)           2082Viscosity, cps @ 25° C.           7,000Flash Point, °C. (C.O.C.)           Over 170° C.SOLUBILITY:     Soluble in most organic solvents such           as alcohols, ketones, glycol ethers           and esters. Partially soluble in           vegetable oil. Dispersible in mineral           oil.           Insoluble in silicones, glycols,           diols, triols and water.SUGGESTED APPLICATIONS:POLYDERM PPI-CO is a polymeric emollient where the triol is aderivative of castor oil. It offers outstanding adhesion characteristicsforboth hair and skin. Also, it provides effective water repellency anddura-bility and forms a water resistant film even after repeated washings.This adhesive tenacity suggests use in sunscreens, lipsticks, protectivecreams and lotions for dry skin.This information is believed to be reliable, but it is not to beconstrued asa warranty and no patent liability can be assumed.BULLETIN #1202-1MAY 1995______________________________________ 
    
     
         ______________________________________FORMULARYPOLYMERIC PROTECTIVE MOISTURIZING CREAMINGREDIENTS   %, WEIGHT   INCI NAME______________________________________A.   Wickenol 707.sup.1             4.00        PPG-30 Cetyl EtherDermol DIPS.sup.1             3.00        Diisopropyl SebacateDermol MOS.sup.1             5.00        Isostearyl Neopentano-                         ate Isocetyl StearatePolyderm PPI-CO.sup.1             3.00        N/AStearic Acid-TP             4.00        Stearic AcidDermol PGMS.sup.1             6.00        Propylene Glycol                         StearateCetyl Alcohol             1.00        Cetyl AlcoholB.   Water, Deionized             67.80Dowicil-200.sup.2             0.20        Quaternium-15Triethanolamine             1.00        TriethanolamineFoamid AME-70             5.00        Acetamide MEAC.   Fragrance    q.s.PROCEDURE:1. Heat Part A 70-75° C.2. Heat Part B 70-75° C.3. With slow agitation, add Part B to Part A.4. With constant agitation, allow batch to cool to 40° C.5. Add fragrance.______________________________________ .sup.1 ALZO INC. .sup.2 DOW CHEMICAL AUGUST 1995 
    
     
         ______________________________________FORMULARYLIP CREAMINGREDIENTS             %, WEIGHT______________________________________A.     DERMOL GMS-SE.sup.1  12.00  DERMOL 135.sup.1     10.00  Mineral Oil          15.00  Promulgen D          2.00  POLYDERM PPI-CO.sup.1                       1.00  Cetyl Alcohol        3.00B.     Water (Deionized)    48.00  FOAMQUAT SAQ-90.sup.1                       3.00  Propylene Glycol     5.00C.     Germaben II (Propylene Glycol (and)                       1.00  Diazolidinyl Urea (and) Methylparaben  (and) Propylparaben)PROCEDURE:In a suitable vesel, weigh Phase A and heat to 80° C. In an-other vessel able to contain the entire batch, weigh Phase Band heat to 80° C. Slowly add Phase A to Phase B withagitation and mix for 10 minutes. Maintaining agitation,start cooling to 45° C. and add Phase C. Continue cooling andagitation to 25-28° C. and package.______________________________________ .sup.1 ALZO INC. 
    
     
         ______________________________________FORMULARYDRY SKIN CREAMINGREDIENTS               %, WEIGHT______________________________________A.     Triple Pressed Stearic Acid                         4.00  DERMOL 135.sup.1       6.00  DERMOL 20-SD.sup.1     2.00  Lanolin Oil            0.50  Myrj 52S (PEG-40 Stearate                         2.00  Mineral Oil            5.00  Abil B 8852 (Dimethiconecopolyol)                         1.00  POLYDERM PPI-CO        1.00  DERMOL GMS-SE          3.00  Vitamin E Acetate (Tocopheryl Acetate)                         0.10B.     Water (Deionized)      55.00  Propylene Glycol       3.00  Allantoin              0.20  Triethanolamine, 99%   0.90C.     Carbopol 934 2% Aq. Soln. (Carbomer 934)                         15.00D.     Germaben IIE (Propylene Glycol (and)                         1.00  Diazolidinyl Urea (and) Methylparaben  (and) Propylparaben)E.     Fragrance              0.30                         100.00%______________________________________ .sup.1 ALZO INC. 
    
     
         ______________________________________FORMULARYLIPSTICK BASE       PARTS BYINGREDIENTS WEIGHT      INCI NAME______________________________________Castor Oil  24.61       Castor OilPOLYDERM PPI-CO.sup.1       10.0        N/ADERMOL M-5.sup.1       14.0        Caprylic/Capric                   TriglyceridesPetralatum  12.0        PetralatumPOLYDERM PPI-D       2.0         N/AMineral Oil 12.0        Mineral OilLanolin     2.5         LanolinDERMOLAN GLH.sup.1       2.5         Glycereth-7-Hydrox                   stearateDERMOL 185.sup.1       3.0         Isostearyl NeopentanoateDERMOL DID.sup.1       2.0         Diisopropyl DilinoleateDERMACET AC.sup.1       4.0         Acetylated Cetyl Alcohols                   &amp; Acetylated Lanolin &#34;Ozokerite   2.5         OzokeriteDERMOL IPL.sup.1       0.5         Isopropyl LinoleatePropyl Paraben       0.06        Propyl ParabenAloe Vera   0.06        Aloe VeraBHA         0.06        Butylated HydroxyanisoleVitamin E   0.06        Alpha Tocopherol AcetatePABA        0.02        p-Amino Benzoic AciCandelilla Wax       16.00       Candelilla WaxPROCEDURE:To be ground and blended in the usual manner.______________________________________ .sup.1 ALZO INC. 
    
     
         ______________________________________FORMULARYPOLYMERIC LIP GLOSSINGREDIENTS    %, WEIGHT  INCI NAME______________________________________A.  WAXENOL 801.sup.1              2.0        Arachidyl Propionate    Lanolin, USP Anhydrous              4.0        Lanolin    DERMOLAN GLH.sup.1              4.0        Glycereth-7-                         Hydroxystearate    Petralatum     5.0        Petralatum    DERMOL 25L     10.0       C.sub.12 C.sub.15 Alcohols Lactate    Ozokerite #4   7.5        Ozokerite    Castor Oil     16.0       Castor Oil    POLYDERM PPI-CO.sup.1              8.2        N/A    Beeswax        7.5        Beeswax    Carnauba Wax   5.0        Carnauba Wax    Methyl Paraben 0.1        Methyl Paraben    Tenox 11       0.1        Butylated Hydroxy                         AnisolB.  Pigments       1.6         --    DERMOL IDO.sup.1              15.0       Isodecyl Oleate    Lunapearl BZ-CO-70              14.0        --PROCEDURE:1.  Grind the color pigments in a portion of the DERMOL IDO; add    the pearl and balance of the IDO to complete B. Melt A wax and    oils to 80° C. Heat B to 70° C. and add to A.2.  Pour into molds at 75-80° C.______________________________________ .sup.1 ALZO INC. 
    
     
         ______________________________________FORMULARYPOLYMERIC CONDITIONING SHAMPOO(PEARLESCENT)INGREDIENTS   %, WEIGHT   INCI NAME______________________________________Water (Deionized)         46.8Dowicil-200.sup.1         0.2         Quaternium-15Foamquat SOAS.sup.2         1.5         Soyamidopropyl Ethyl-                     dimonium EthosulfatePolyderm PPI-CO.sup.2         1.0         N/ADermowax EGMS.sup.2         0.5         Glycol StearateFoamtaine CAB-G.sup.2 (45%)         20.0        Cocamidopropyl BetaineBio-Terge AS.sup.3 (40%)         10.0        Sodium Alpha Olefin                     SulfonateStepanol WA Paste.sup.3 (30%)         20.0        Sodium Lauryl SulfateColor         q.s.Fragrance     q.s.         100.0PROCEDURE:1.   Heat water to 55-60° C. With fast stirring, slowly addDowicil-200 and Foamquat SOAS. Mix to dissolve.2.   Add Polyderm PPI-CO and EGMS. Mix to dissolve.3.   With fast mixing, slowly add Foamtaine CAB-G, Alpha Olefinand Sodium Lauryl Sulfate.5.   When uniform, cool; add Color and Fragrance.TYPICAL SPECIFICATIONS:Activity, %:  22Viscosity:    3,000 (Without Fragrance)pH @ 25° C.         7.0______________________________________ .sup.1 DOW CHEMICAL .sup.2 ALZO INC. .sup.3 STEPAN