SULFUR COATED FERTILIZERS WITH POLYMER COATING LAYER
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United States of America Patent
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Issued Date -
Apr 11, 2024
app pub date -
Jan 19, 2022
filing date -
Jan 19, 2022
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Abstract
The invention relates to a sulfur coated granular fertilizer, having a polymer coating on the sulfur layer, wherein the polymer coating comprises polycaprolactone. The sulfur coated granular fertilizer may have an aliphatic polyester a polymer coating on the sulfur layer, and has the following characteristics when tested in a standardized water leach test: a. an initial release of about 20% nutrient or less in 24 h, preferably of about 15% or less; b. a release of more than 4% of the nutrient content between the days 14 and 21 from the beginning of the water leach test, preferable of about 5% or more.
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