Personal care compositions and methods comprising trans-1-chloro-3,3,3-trifluoropropene

1 . A method of treating human skin, hair and/or mucous membranes comprising:

(a) providing a personal care composition in the form of a gel, lotion or cream comprising: (i) one or more active ingredients; (ii) optionally one or more auxiliary gel, lotion or cream forming components; and (iii) foam forming component(s) present in an amount of from about 30 percent by weight to about 50 percent by weight based on the total weight of the components (i), (ii) and (iii), said foam forming component(s) comprising: (1) at least about 90 percent by weight, based on the total of components (1) and (2), of trans-1-chloro-3,3,3-trifluoropropene (1233zd(E));

(b) spreading said gel, lotion or cream on and/or into the skin, hair and/or mucous membrane of the human being treated; and

(c) foaming said gel, lotion or cream during delivery and/or while in contact with the skin, hair and/or mucous membrane by evaporating said trans-1-chloro-3,3,3-trifluoropropene (1233zd(E)) from said gel, lotion or cream.

2 . The method of claim 1 wherein said personal care composition comprises one or more auxiliary gel, lotion or cream forming components.

3 . The method of claim 1 wherein said proving step comprises providing said gel, lotion or cream in a container.

4 . The method of claim 3 wherein said foaming step comprises spreading said gel, lotion, cream and/or foam on and/or into the skin, hair and/or mucous membrane of the human being treated and wherein said foaming provides an extended cooling effect to the user.

5 . The method of claim 4 wherein said foaming step comprises spreading said gel, lotion, cream and/or foam on and/or into the skin, hair and/or mucous membrane of the human being treated and wherein said spreading provides energy for said evaporation of said 1233zd(E).

6 . The method of claim 5 wherein said container is under pressure.

7 . The method of claim 1 wherein said personal care composition further comprises trans-1,3,3,3-tetrafluoropropene (1234ze (E)).

8 . A personal care formulation for treating human skin, hair and/or mucous membranes comprising a gel, lotion or cream comprising:

(a) one or more active ingredients for providing a beneficial effect to the skin and/or hair and/or mucous membranes of a human,

(b) optionally one or more auxiliary gel, lotion or cream forming components, and

(c) from about 1 percent by weight to about 50 percent by weight based on the total of components (a), (b) and (c) of foam forming component(s), wherein said foam forming component comprises at least about 90% by weight of trans-1-chloro-3,3,3-trifluoropropene (1233zd(E).

9 . The personal care composition of claim 8 comprising from about 1 percent by weight to about 10 percent of said foam forming components.

10 . The personal care composition of claim 9 comprising from about 3 percent by weight to about 6 percent of said foam forming components based on the weight of the components in the personal care composition and wherein said foam forming component(s) comprise at least about 95% by weight of said 1233zd(E).

11 . The personal care composition of claim 9 wherein said foam forming components consist essentially of from about 3 percent by weight to about 6 percent of said 1233zd(E) based on the weight of the components in the personal care composition.

12 . The personal care composition of claim 9 wherein said foam forming components consist of from about 3 percent by weight to about 6 percent of said 1233zd(E) based on the weight of the components in the personal care composition.

13 . A method of treating human skin, hair and/or mucous membranes with a personal care gel, lotion, cream or foam, said method comprising:

(a) providing a closed container openable to dispensing the contents thereof and including therein a personal care formulation in the form of an emulsion and/or dispersion comprising:

(i) one or more active ingredients for providing a beneficial effect to the skin and/or hair of a human,

(ii) optionally one or more auxiliary gel, lotion, or cream forming components,

(iii) foam forming component(s) present in an amount of from about 30 percent by weight to about 50 percent by weight based on the total weight of the components (1), (ii) and (iii), said foam forming component(s) comprising:

(1) at least about 90 percent by weight, based on the total of components (1) and (2), of trans-1-chloro-3,3,3-trifluoropropene (1233zd(E); and optionally

(2) a co-foaming agent different than said 1233zd(E); and

(iv) an external propellant for providing a force tending to eject said personal care composition from said container,

(b) dispensing said personal care formulation from said container by propelling said personal care formulation from said container;

(c) applying said dispensed personal care formulation to the skin, hair and/or mucous membranes; and

(d) providing a cooling sensation to the human being treated by evaporating at least a portion said trans-1-chloro-3,3,3-trifluoropropene (1233zd(E)) from said applied personal care composition after said dispensing step.

14 . The method of claim 13 wherein said dispensing step initiates foaming of said personal care formulation.

15 . The method of claim 14 wherein said co-foaming agent is present.

16 . The method of claim 15 wherein said propelling and initial foaming is provided by said co-foaming agent, wherein said applying comprises spreading said personal care composition onto the user and wetting the skin, hair and/or mucous membrane of the user while said cooling sensation is being provided to the user.

17 . The method of claim 16 wherein said co-foaming agent comprises trans-1,3,3,3-tetrafluoropropene (1234ze (E)).