Aqueous pvp solution in two phase aerosol hair spray

Claim 1

A SELF-DISPENSING NON-FLAMMABLE PRESSURIZED PACKAGE CONSISTING OF A VALVED CONTAINER HAVING THEREIN A HAIRSETTING CHARGE TO BE DISPENSED, SAID HAIR-SETTING CHARGE CONSISTING ESSENTIALLY OF AN AQUEOUS FIRST LAYER CONTAINING IN SOLUTION A MINOR AMOUNT OF POLYVINYL PYRROLIDONE; A HYDROCARBON PROPELLANT SELECTED FROM THE GROUP CONSISTING OF PROPANE, NORMAL BUTANE, ISO-BUTANE AND MIXTURES THEREOF, SAID HYDROCARBON PROPELLANT FORMING A LIQUID SECOND LAYER IMMISCIBLE WITH SAID FIRST LAYER, HAVING A SUPERATMOSPHERIC VAPOR PRESSURE AT ROOM TEMPERATURE AND HAVING A SUBSTANTIALLY LOWER SPECIFIC GRACVITY THAN SAID FIRST LAYER, WHEREBY SAID SECOND LAYER FLOATS ON SAID FIRST LAYER, AND A VAPOR SPACE ABOVE SAID SECOND LAYER SATURATED WITH THE VAPORS OF SAID SECOND LAYER, SID POLYVINYL PYRROLIDONE DISSOLVED IN SAID FIRST LAYER BEING SUBSTANTIALLY INSOLUBLE IN SAID SECOND LAYER; THE CONTAINER BEING PROVIDED WITH A DISCHARGE VALVE AND A DIP TUBE EXTENDING FROM THE DISCHARGE VALVE INTO SAID FIRST LAYER NEAR THE BOTTOM OF THE CONTAINER AND THE DISCHARGE VALVE BEING PROVIDED WITH AN ORFICE COMMUNICATING WITH THE VAPOR SPACE ABOVE SAID SECOND LAYER, WHEREBY WHEN THE DISCHARGE VALVE IS OPENED LIQUID FIRST LAYER MATERIAL CONSISTING ESSENTIALLY OF WATER AND POLYVINYL PRROLIDONE IS DISCHARGED THROUGH THE DIP TUBE UNACCOMPAINED BY LIQUID HYDROCARBON OF THE SECOND LAYER BUT ACCOMPANIED BY VAPORS OF THE LATTER.