Magnetic dermal adhesives, accessories, and related methods

Abstract

Various magnetic dermal adhesives and magnetically attachable personalizable accessories of the present disclosure are provided comprising a load-bearing magnetic dermal adhesive incorporating magnetic particles and a magnetic personalizable accessory incorporating one or more magnetic elements exhibiting high magnetic coercivity and positioned at least at the base of the magnetic personalizable accessory enabling their interaction. These magnetically complementary products provide a convenient way for reversibly attaching/detaching/interchanging various magnetic personalizable accessories to interact with consumers' skin so that they can be (a) “re-useable” saving money, time, and resources; (b) can be arranged in various ways (worn singly or grouped together in an infinite number of unique arrangements); (c) can provide a broad range of options for creative self-expression/personal style; (d) can be interchangeably attached to achieve multiple variations; (e) can be conveniently swapped/exchanged from one user to another (f) can be stacked or superimposed together into various creative arrangements; (g) can be utilized for enhancing the experience of various personal and professional situations; and many more benefits that can be uniquely crafted by each consumer according to his/her particular performance requirements.

We claim: 
     
         1 . A load-bearing magnetic dermal adhesive capable of attaching one or more magnetic personalizable accessories, comprising:
 (a) a pigment suitable for a skin cosmetic formulation;   (b) one or more magnetic particles suitable for use in a pigmented cosmetic formulation; and   (c) a load-bearing structural adhesive, capable of adhering to the surface of a skin and capable of magnetically supporting the attachment of a magnetic personalizable accessory,   
       wherein the cosmetic formulation is convertible from a non-load-bearing state to a load-bearing adhesive state after coating the skin surface, and 
       wherein the adhesive force between the load-bearing structural adhesive of the skin-adhered dermal adhesive and the skin surface is greater than the magnetic force between the load-bearing magnetic dermal adhesive and the magnetic personalizable accessory, so that the magnetic personalizable accessory is reversibly attachable, detachable, and interchangeable. 
     
     
         2 . The load-bearing magnetic dermal adhesive of  claim 1 , wherein the pigment is selected from a group consisting of natural pigments, synthetic pigments, metallic pigments, non-metallic pigments, inorganic pigments, organic pigments, and pearlescent pigments. 
     
     
         3 . The load-bearing magnetic dermal adhesive of  claim 1 , wherein the pigment is inorganic and selected from a group consisting of black iron oxides, yellow iron oxides, red iron oxides, brown iron oxides, titanium dioxide (rutile or anatase or white), manganese violet, ultramarine blue, chromium oxide (green), and ferric blue. 
     
     
         4 . The load-bearing magnetic dermal adhesive of  claim 1 , wherein the pigment is a particle having an average diameter ranging from about 10 nm to about 500 μm. 
     
     
         5 . The load-bearing magnetic dermal adhesive of  claim 1 , wherein the magnetic particle is a ferromagnetic compound selected from the group consisting of iron oxides, Hematite Fe 2 O 3 , Magnetite Fe II (Fe III ) 2 O 4 , Super-paramagnetic iron oxides (SPIO), Chromium dioxide CrO 2 , Barium ferrites (BaFe 12 O 19 , Ba 2 ZnFe 18 O 23 , BaFe 2+   2 Fe 3+   16 O 27 ), Bismuth ferrite (BiFeO 3 ), Manganese-zinc ferrite (MnZn), Cobalt ferrite, CoFe 2 O 4 , Strontium ferrite, SrFe 12 O 19 , and Yttrium iron granate (YIG) Y 3 Fe 5 O 12 . 
     
     
         6 . The load-bearing magnetic dermal adhesive of  claim 5 , wherein the iron oxide is black iron oxide with a concentration from about 10-60 (w/w %), more preferably 20-50 (w/w %), and most preferably from 25-45 (w/w %). 
     
     
         7 . The load-bearing magnetic dermal adhesive of  claim 1 , wherein the magnetic particles exhibit an average diameter size ranging from 1 μm to 1 mm, preferably ranging from 5 μm to 500 μm, and most preferably ranging from 50 μm to 250 μm. 
     
     
         8 . The load-bearing magnetic dermal adhesive of  claim 1 , wherein the magnetic particles are encapsulated and exhibit an average diameter size ranging from 100 nm to 1 μm. 
     
     
         9 . The load-bearing magnetic dermal adhesive of  claim 1 , wherein the magnetic particles comprise a ferromagnetic material exhibiting high intrinsic coercivity. 
     
     
         10 . The load-bearing magnetic dermal adhesive of  claim 1 , wherein the structural adhesive comprises a fluorinated acrylate polymer. 
     
     
         11 . The load-bearing magnetic dermal adhesive of  claim 1 , wherein the magnetic personalizable accessory comprises an accessory base incorporating one or more magnetic elements exhibiting high magnetic coercivity. 
     
     
         12 . A magnetically attachable personalizable accessory, comprising:
 (a) an accessory base incorporating one or more magnetic elements exhibiting high magnetic coercivity; and   (b) a visible accessory surface of interest,
 wherein the magnetic elements are positioned in a portion of the accessory base for magnetically interacting with the surface of a magnetic dermal adhesive film formable over a skin of interest, 
 wherein the adhesive force between the load-bearing structural adhesive of the skin-adhered dermal adhesive and the skin surface exceeds the magnetic force generated between the load-bearing dermal adhesive and the personalizable accessory, and 
 wherein the magnetic force between the load-bearing dermal adhesive and the personalizable accessory exceeds the gravitational force acting on the personalizable accessory, and 
 thereby, the magnetic interaction between the magnetic particles incorporated into the load-bearing dermal adhesive and the magnetic elements incorporated into the magnetic personalizable accessory stably attaches the magnetic personalizable accessory to a skin surface. 
   
     
     
         13 . The magnetically attachable personalizable accessory of  claim 12 , wherein the magnetic element exhibits an intrinsically high coercivity, preferably ranging between 10-25,000 kA/m, more preferably from 100-15,000 kA/m, and most preferably from 1,000-10,000 kA/m. 
     
     
         14 . The magnetically attachable personalizable accessory of  claim 12 , wherein the magnetic element is selected from a group consisting of ferromagnetic elements, ferromagnetic alloys, and ferromagnetic compounds. 
     
     
         15 . The magnetically attachable personalizable accessory of  claim 12 , wherein the magnetic element is formed from one or more hard ferromagnetic materials. 
     
     
         16 . The magnetically attachable personalizable accessory of  claim 15 , wherein the hard ferromagnetic material is selected from Bismanol and AlNiCo. 
     
     
         17 . The magnetically attachable personalizable accessory of  claim 15 , wherein the hard ferromagnetic material comprises one or more rare-earth compounds. 
     
     
         18 . The magnetically attachable personalizable accessory of  claim 17 , wherein the rare-earth compound is neodymium-iron-boron Nd 2 Fe 14 B. 
     
     
         19 . The magnetically attachable personalizable accessory of  claim 12 , wherein the magnetic elements in the accessory base are arranged to form a one-sided flux distribution. 
     
     
         20 . A magnetically attachable personalizable accessory system, comprising:
 (a) a load-bearing magnetic dermal adhesive adherable to a skin surface and incorporating magnetic particles compatible with a load-bearing structural adhesive; and   (b) a magnetic personalizable accessory incorporating one or more magnetic elements exhibiting high magnetic coercivity and positioned at least at the base of the personalizable accessory,   wherein the adhesive force between the load-bearing structural adhesive of the skin-adhered dermal adhesive and the skin surface exceeds the magnetic force generated between the load-bearing dermal adhesive and the personalizable accessory,   wherein the magnetic force between the load-bearing dermal adhesive and the personalizable accessory exceeds the gravitational force acting on the personalizable accessory, and   thereby the magnetic interaction between the magnetic particles incorporated into the load-bearing dermal adhesive and the magnetic elements incorporated into the magnetic personalizable accessory stably attaches the personalizable accessory to a skin surface.   
     
     
         21 . The magnetically attachable personalizable accessory system of  claim 20 , wherein the magnetic dermal adhesive comprises (a) a pigment suitable for a cosmetic formulation, (b) one or more magnetic particles suitable for use in a pigmented cosmetic formulation, and (c) a load-bearing structural adhesive, capable of adhering to the surface of a skin and capable of magnetically supporting the attachment of a magnetic personalizable accessory. 
     
     
         22 . The magnetically attachable personalizable accessory system of  claim 20 , wherein the one or more magnetic particles are ferromagnetic compounds selected from the group consisting of iron oxides, Hematite Fe 2 O 3 , Magnetite Fe II (Fe III ) 2 O 4 , Super-paramagnetic iron oxides (SPIO), Chromium dioxide CrO 2 , Barium ferrites (BaFe 12 O 19 , Ba 2 ZnFe 18 O 23 , BaFe 2+   2 Fe 3+   16 O 27 ), Bismuth ferrite (BiFeO 3 ), Manganese-zinc ferrite (MnZn), Cobalt ferrite, CoFe 2 O 4 , Strontium ferrite, SrFe 12 O 19 , and Yttrium iron granate (YIG) Y 3 Fe 5 O 12 . 
     
     
         23 . The magnetically attachable personalizable accessory system of  claim 20 , wherein the magnetic element is formed from one or more hard ferromagnetic materials. 
     
     
         24 . The magnetically attachable personalizable accessory system of  claim 23 , wherein the hard ferromagnetic materials are selected from a group consisting of Bismanol and AlNiCo. 
     
     
         25 . The magnetically attachable personalizable accessory system of  claim 23 , wherein the hard ferromagnetic material comprises one or more rare-earth compounds. 
     
     
         26 . The magnetically attachable personalizable accessory system of  claim 25 , wherein the rare-earth compound is neodymium-iron-boron Nd 2 Fe 14 B. 
     
     
         27 . The magnetically attachable personalizable accessory of  claim 20 , wherein the load-bearing structural adhesive comprises a fluorinated acrylate polymer. 
     
     
         28 . The magnetically attachable personalizable accessory system of  claim 20 , wherein the magnetic elements in the magnetic personalizable accessory are arranged to form a one-sided flux distribution. 
     
     
         29 . A method for making a magnetically attachable personalizable accessory system, comprising:
 a) providing a load-bearing magnetic dermal adhesive adherable to a skin surface and incorporating magnetic particles compatible with a load-bearing structural adhesive; and   (b) providing a magnetic personalizable accessory incorporating one or more magnetic elements exhibiting high magnetic coercivity and positioned at least at the base of the personalizable accessory,   wherein the adhesive force between the load-bearing structural adhesive of the skin-adhered dermal adhesive and the skin surface exceeds the magnetic force generated between the load-bearing dermal adhesive and the personalizable accessory,   wherein the magnetic force between the load-bearing dermal adhesive and the personalizable accessory exceeds the gravitational force acting on the personalizable accessory, and   thereby the interaction between the magnetic particles incorporated into the load-bearing dermal adhesive and the magnetic elements incorporated into the magnetic personalizable accessory stably attaches the personalizable accessory to a skin surface.   
     
     
         30 . A method of using a magnetically attachable personalizable accessory system of  claim 20 , comprising:
 coating a load-bearing magnetic dermal adhesive incorporating magnetic particles onto a skin surface;   permitting sufficient time for the load-bearing magnetic dermal adhesive to form a stable adhesive bond to the skin surface; and   positioning a magnetic personalizable accessory incorporating magnetic elements at least at the accessory base, for allowing the magnetic personalizable accessory to stably attach to the load-bearing magnetic dermal adhesive by magnetic attraction.