Deicing and anti-icing compositions comprising renewably-based, biodegradable 1,3-propanediol
View Patent ↗Disclosed herein are deicing and anti-icing compositions comprising 1,3-propanediol, wherein the 1,3-propanediol in said deicing or anti-icing composition has a bio-based carbon content of about 1% to 100%. In addition, it is preferred that the 1,3-propanediol be biologically-derived, and wherein upon biodegradation, the biologically-derived 1,3-propanediol contributes no anthropogenic CO 2 emissions to the atmosphere.
1. 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.
2. The method of claim 1 wherein said deicing or anti-icing composition comprises a liquid.
3. The method of claim 1 wherein said deicing or anti-icing composition comprises a solid.
4. The method of claim 1 wherein said surface is selected from the group consisting of roadways, runways, aircraft, airport pavements, bridges, walking bridges, entrances, structures, pre-harvest fruit or vegetables, canals, locks, components, vessels, nautical components, railroad switches and motor vehicles.
5. The method of claim 1 wherein said glycol comprises at least 5% biobased carbon.
6. The method of claim 1 wherein said glycol comprises at least 50% biobased carbon.
7. The method of claim 1 wherein said glycol comprises 100% biobased carbon.
8. The method of claim 1 wherein said biologically-derived, biodegradable 1,3-propanediol has a peroxide concentration of less than about 100 ppm.
9. The method of claim 1 wherein said biologically-derived, biodegradable 1,3-propanediol has a concentration of carbonyl groups of less than about 10 ppm.
10. The method of claim 1 wherein said biologically-derived, biodegradable 1,3-propanediol has a concentration of total organic impurities of less than about 400 ppm.