Agrium, Inc.

Agrium Advanced Technologies (u.s.) Inc.

Chevron Phillips Chemical Company LP

Agrium U.S. Inc.

Leslie L Carstens

Michael S Matson

Daniel M Hasenberg

Mitchell D Refvik

Jim D Byers

Baozhong Xing

Nick Peter Wynnyk

Garrard Lee Hargrove

Dale M Solaas

Chad W Brown

Michael S Hankinson

Steven J Herron

Sriramakrishna Maruvada

Romem Avdala

Romen Avdala

A controlled release fertilizer material comprising a particulate plant nutrient surrounded by at least one coating comprising the reaction product of a mixture comprising a polyol, an isocyanate, a wax and an epoxidized fatty acid triglyceride oil.

Controlled release fertilizer employing epoxidized fatty acid triglyceride oil as a coating additive

A controlled release fertilizer material comprising a particulate plant nutrient surrounded by a coating which is the reaction product of a mixture including a cross-linked polyol, an isocyanate and a wax is described. The cross-linked polyol is a reaction product of a polyhydroxyl compound, such as glycerol, and a triglyceride and the monoglyceride and/or diglyceride products are cross-linked with sulfur, oxygen and/or a peroxide cross-linking moiety, or are directly cross-linked at unsaturated sites in the monoglycerides and/or diglycerides.

Controlled release fertilizers made from cross-linked glyceride mixtures

There is disclosed a wet process for the recovery of phosphate from phosphate rock which comprises leaching finely divided particles of phosphate rock with a protic acid at a temperature and for a time that favours dissolution, into a leachate, of the phosphate in relation to an impurity, and, isolating the leachate. An appropriate combination of particle size, leach time and leach temperature can achieve high phosphate recovery while reducing the amount of impurities.

Process for the recovery of phosphate from phosphate rock

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Thorhild, Canada

Leslie L Carstens