Title: Process for producing improved sulfur-coated urea slow release fertilizers
Application Number: 95190939 Application Date: 1995.09.22
Publication Number: 1135745 Publication Date: 1996.11.12
Approval Pub. Date: 2001.10.03 Granted Pub. Date: 2001.10.03
International Classifi-cation: C05C9/00;C05G3/10;C05G5/00
Applicant(s) Name: Ayellehee Tech. Co., Ltd. Address:
Inventor(s) Name: John. Detrick
Attorney & Agent: QUAN JING
Abstract:
    The present invention describes a sulfur-coated urea slow release granular fertilizer having a uniform, durable polymeric coating over the sulfur-coating. The polymer coating is formed by the direct in situ co-polymerization of diethylene glycol-triethanolamine polyol and a diisocyanate on the surface of the sulfur-coated urea granule. The polymeric coating provides improved impact resistance of the composite coated granule.
Time: 5
<- Previous Patent:Special health agent for wheat fi...   |  Next Patent:Coated synergistic urea ->