Fertilizer coating compositions and methods of preparation thereof
AssigneeKraton Chemical, LLC
InventorsGerald Heebner, Lloyd Nelson
Life of this patent
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Abstract
The disclosure relates to fertilizer coating compositions and methods for making thereof. The fertilizer coating comprises a decarboxylated rosin acid (DCR) component, optional bitumen and other additives. The DCR has a Kb value of 25-90, a density of 0.9 to 1.0 g/cm3 at 20° C., an aniline point of 3-40° C., and an acid value of <50 mg KOH/g. The fertilizer coated with the coating composition has a reduction in dust level of >25% after 2 weeks of aging compared to a fertilizer not having the coating composition disposed thereon, according to Dust Level Measurement Test.
Claims17
A fertilizer composite comprising:
- a fertilizer substrate, and
- a coating disposed on at least a surface of the fertilizer substrate;
- wherein the coating comprises:
- 2-100 wt. % decarboxylated rosin acid (DCR);
- wherein the DCR has
- a Kb value of 25-90, according to ASTM D1133,
- an aniline point of 3-40° C., according to ASTM D611,
- a viscosity of 15 to 60 cSt at 40° C., measured according to ASTM D-445, and
- an acid value of <50 mg KOH/g, as measured using ASTM D1240-14 (2018);
- 0-98 wt. % bitumen;
- and
- 0-98 wt. % one or more components selected from the group of waxes, resins/polymers, plant oils, and mixtures thereof;
- wherein the fertilizer composite has a reduction in dust level of >25%, measured according to Dust Level Measurement Test, after 2 weeks of aging compared to a fertilizer substrate not having the coating disposed thereon.
A method of making a fertilizer composite, the method comprising:
- providing a fertilizer substrate;
- and
- coating at least a surface of the fertilizer substrate with a coating comprising:
- 2-100 wt. % decarboxylated rosin acid (DCR);
- wherein the DCR has
- a Kb value of 25-90, according to ASTM D1133,
- an aniline point of 3-40° C., according to ASTM D611,
- a viscosity of 15 to 60 cSt at 40° C., measured according to ASTM D-445, and
- an acid value of <50 mg KOH/g, as measured using ASTM D1240-14 (2018);
- 0-98 wt. % bitumen;
- and
- 0-98 wt. % one or more components selected from the group of waxes, resins/polymers, plant oils, and mixtures thereof;
- wherein the fertilizer composite has a reduction in dust level of >25%, measured according to Dust Level Measurement Test, after 2 weeks of aging compared to a fertilizer substrate not having the coating disposed thereon.
Dependencies are inferred from the claim text.