Lignosulfonate coated calcium chloride
View Patent ↗Ice-melt compositions including calcium chloride coated with a lignosulfonate material are disclosed. The ice-melt compositions can be useful as ice-melt products with improved safety. Also disclosed are methods of melting ice using an ice-melt composition and methods of making an ice-melt composition.
1. An ice-melt composition comprising:
coated particles, wherein each coated particle comprises:
a core comprising calcium chloride; and
a coating at least partially surrounding the core, the coating consisting essentially of a lignosulfonate and an optional colorant; and
wherein the coated particles comprise about 60% to about 99.9%, by weight, of the calcium chloride and about 0.1% to about 5%, by weight, of the lignosulfonate material.
2. The ice-melt composition of claim 1 , wherein the lignosulfonate material comprises calcium lignosulfonate, sodium lignosulfonate, ammonium lignosulfonate, or mixtures thereof.
3. The ice-melt composition of claim 1 , wherein the coated particles are pellets, granules, or mixtures thereof.
4. The ice-melt composition of claim 1 , wherein about 60% or more of the coated particles are sized at about 35 mesh or greater.
5. The ice-melt composition of claim 1 , wherein about 40% or less of the coated particles are sized at about 3.5 mesh or greater.
6. The ice-melt composition of claim 1 , wherein the lignosulfonate material is soluble in water.
7. The ice-melt composition of claim 1 , wherein the coating further consists essentially of the colorant.
8. The ice-melt composition of claim 7 , wherein the colorant is water-soluble.
9. The ice-melt composition of claim 1 , wherein the lignosulfonate material at least partially hydrates the calcium chloride.
10. An ice-melt composition comprising:
coated particles, wherein each coated particle comprises:
a core consisting essentially of calcium chloride; and
a coating at least partially surrounding the core, the coating consisting essentially of a lignosulfonate material, an optional colorant, an optional drying additive, an optional non-slip aggregate, and an optional ice-melting material selected from the group consisting of a chloride salt and urea; and
wherein the coated particles comprise about 0.1% to about 5%, by weight, of the lignosulfonate material.
11. The ice-melt composition of claim 10 , wherein the lignosulfonate material comprises calcium lignosulfonate, sodium lignosulfonate, ammonium lignosulfonate, or mixtures thereof.
12. The ice-melt composition of claim 10 , wherein the particles are pellets, granules, or mixtures thereof.
13. The ice-melt composition of claim 10 , wherein about 60% or more of the coated particles are sized at about 35 mesh or greater.
14. The ice-melt composition of claim 10 , wherein about 40% or less of the coated particles are sized at about 3.5 mesh or greater.
15. The ice-melt composition of claim 10 , wherein the lignosulfonate material is soluble in water.
16. An ice-melt composition comprising:
coated particles, wherein each coated particle comprises:
a core consisting essentially of calcium chloride; and
a coating at least partially surrounding the core, the coating consisting of a lignosulfonate material, a colorant, an optional drying additive, an optional non-slip aggregate, and an optional ice-melting material selected from the group consisting of a chloride salt and urea; and
wherein the coated particles comprise about 0.1% to about 5%, by weight, of the lignosulfonate material.
17. The ice-melt composition of claim 16 , wherein the lignosulfonate material comprises calcium lignosulfonate, sodium lignosulfonate, ammonium lignosulfonate, or mixtures thereof.
18. The ice-melt composition of claim 16 , wherein the particles are pellets, granules, or mixtures thereof.
19. The ice-melt composition of claim 16 , wherein about 60% or more of the coated particles are sized at about 35 mesh or greater.
20. The ice-melt composition of claim 16 , wherein about 40% or more of the coated particles are sized at about 3.5 mesh or greater.
21. The ice-melt composition of claim 16 , wherein the lignosulfonate material is soluble in water.
22. The ice-melt composition of claim 16 , wherein the colorant is water soluble.