PERSONAL CARE COMPOSITIONS AND METHODS COMPRISING TRANS-1-CHLORO-3,3,3-TRIFLUOROPROPENE AND TRANS-1,3,3,3-TETRAFLUOROPROPENE
Disclosed are personal care methods and compositions in the form of a stable oil-in-water emulsion comprising: (i) a continuous aqueous phase comprising water; (ii) a discontinuous phase comprising foam forming component(s), trans-1-chloro-3,3,3-trifluoropropene (1233zd(E)) and trans-1-3,3,3-tetrafluoropropene (1234ze(E)), wherein said 1233zd(E) and said 1234ze(E) together comprise from about 40% to about 60% by weight of said personal care composition and are present in a trans1233zd:trans1234ze weight ratio of from about 8:1 to about 8:1; (iii) an emulsifier having an HLB value of from about 7 to about 18 and which may be present in the continuous and/or discontinuous phase; and (iv) one or more active ingredients which may be present in the continuous and/or discontinuous phase.
1 . A methods of treating human skin, hair and/or mucous membranes comprising:
(a) providing a personal care composition in a container under pressure in the form of a stable oil-m-water emulsion comprising:
(i) a continuous aqueous phase comprising water;
(ii) a discontinuous phase comprising foam forming component(s), trans-1-chloro-3,3,3-trifluoropropene (1233zd(E)) and trans-1-3,3,3-tetrafluoropropene (1234ze(E)), wherein said 1233zd(E) and said 1234ze(E) together comprise from about 40% to about 60% by weight of said personal care composition and are present in a trans1233zd:trans1234ze weight ratio of from about 8:1 to about 8:1;
(iii) an emulsifier having an HLB value of from about 7 to about 18 and which may be present in the continuous and/or discontinuous phase;
(iv) one or more active ingredients which may be present in the continuous and/or discontinuous phase; and
(v) optionally one or more auxiliary gel, lotion or cream forming components which may be present in the continuous and/or discontinuous phase;
(b) dispensing said personal care composition on and/or into the skin, hair and/or mucous membrane of the human being treated by discharging at least a portion of the personal care composition from said container into ambient pressure conditions to form a foam.
2 . The method of claim 1 wherein said 1233zd(E) and said 1234ze(E) together comprise from about 40% to about 60% by weight of said personal care composition and are present in a trans1233zd:trans1234ze weight ratio of from about 1:8 to less than 1:1.
3 . The method of claim 1 wherein said 1233zd(E) and said 1234ze(E) together comprise from about 40% to about 60% by weight of said personal care composition and are present in a trans1233zd:trans1234ze weight ratio of from about 8:1 to 1:1.
4 . The method of claim 1 wherein said emulsifier comprises a solid emulsifier.
5 . The method of claim 1 wherein said emulsifier is a linear, long chain solid emulsifier.
6 . The method of claim 1 further comprising foam about 9% to less than about 14% by weight of a stability assistance component.
7 . The method of claim 6 wherein said stability assistance component is selected from the group consisting of ester oil, silicone, fatty alcohol, wax and combinations of two or more of these.
8 . The method of claim 1 wherein said 1233zd(E) and said 1234ze(E) together comprise at least about 60% by weight of said personal care composition and are present in a trans1233zd:trans1234ze weight ratio of from about 1:8 to less than about 1:1.
9 . The method of claim 1 wherein said step of forming a foam on the user provide the user with a cooling sensation and/or a crackling sound.
10 . The method of claim 1 wherein a foam is formed on the user in a form selected from sherbet foam, ice cream foam; crackling foam or a combination of two or more of these.