Patent ID: 7972530

Claim:
A method of reducing the anthropogenic CO 2 emission of a deicing or anti-icing composition upon biodegradation, the method comprising: preparing a deicing or anti-icing composition comprising a glycol wherein said glycol is a biologically-derived, biodegradable 1,3-propanediol, and wherein said biologically-derived, biodegradable 1,3-propanediol exhibits no anthropogenic CO 2 emission upon biodegradation, and applying said deicing or anti-icing composition to a surface whereby said deicing or anti-icing composition biodegrades; wherein the reduction of anthropologic CO 2 emission is compared to the anthropologic CO 2 emission of a deicing or anti-icing composition not comprising biologically-derived, biodegradable 1,3-propanediol.