Chemistry: fertilizers – Processes and products – Organic material-containing
Reexamination Certificate
2006-06-07
2008-12-23
Sayala, C. (Department: 1794)
Chemistry: fertilizers
Processes and products
Organic material-containing
C071S032000, C071S044000, C071S064030
Reexamination Certificate
active
07468087
ABSTRACT:
Disclosed are a fertilizer containing a sparingly water-soluble phosphatic fertilizer and an urea/aliphatic aldehyde condensation product. The process for controlling inorganizing speed of urea/aliphatic aldehyde condensation product comprises adding to the urea/aliphatic aldehyde condensation product a sparingly water-soluble phosphatic fertilizer having special elution characteristics. The fertilizer of the invention and the process for controlling inorganizing speed of urea/aliphatic aldehyde condensation product of the invention make it possible to control the inorganizing speed of the condensation product without changing the particle size or form. The fertilizers of the invention or the urea/aliphatic aldehyde condensation products can provide nitrogen components to plant in accordance with the periods of culture of desired crops and a pattern of absorbing nutrition. This is effective in saving of the number of additional fertilization or nitrogen components left in soil after the period of culture.
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Catalog on a fertilizer comprising urea/acetaldehyde condensation product (CDU),Chisso-ASAHI Fertilizer Co., Ltd.
Fukuda Kenji
Harada Noriaki
Sakamoto Atsushi
Chissoasahi Fertilizer Co. Ltd.
Leydig Voit & Mayer Ltd
Sayala C.
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