Abstract: The present disclosure teaches systems and methods for a polymer based smoking substitute material. Polyalkylene carbonates are clean burning polymers which have a range of glass transition temperatures and other properties. Cigarettes (10) having smokable material, wrapping material (14) and filter material (16) comprised of one or more polyalkylene carbonates are disclosed. These systems and methods will find industrial applicability in, for example, the tobacco products industry.

Abstract: This invention relates to a method for the treatment of acne that comprises applying a fluid comprising a polyalkylene carbonate over the area affected by acne and penetrating pores within the area. Forming a polyalkylene carbonate film covering the affected area, and thereafter removing the film. The polyalkylene carbonate film can also contain medications useful in the treatment of acne.

Abstract: This invention relates to an improved portable system for the delivery of a breathable, fire extinguishing gas mixture to a fire zone. The gas mixture comprises a normally gaseous inert material, such as nitrogen, helium or argon; an oxygen containing gas; and carbon dioxide. The system includes a means for storing or generating the inert material, means for storing the carbon dioxide, means for generating or introducing the oxygen containing gas, and means for mixing the components. The system also includes means for heating, vaporizing and controlling the temperature and proportions of the components.