Sulfur containing isocyanate compositions

Details Sulfur containing isocyanate compositions Sulfur containing isocyanate compositions

C - Chemistry, Metallurgy

05

G

C05G 3/00 (2006.01) C05G 5/00 (2006.01) C09D 7/12 (2006.01) C09D 175/00 (2006.01)

Patent

CA 2274200

This invention relates to an isocyanate composition comprising a) at least one isocyanate and b) from 1 to 50% by weight, based on the total weight of component a), of sulfur. These isocyanate compositions are suitable for the preparation of polyurethane/polyurea encapsulated fertilizers. Accordingly, the present invention also relates to an improved process for the production of a polyurea/polyurethane encapsulated fertilizer comprising applying at least one isocyanate-reactive component to the fertilizer particles and applying the isocyanate compositions of the present invention to the fertilizer particles, to form these polyurea/-polyurethane encapsulated fertilizers.

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