Controlled release fertilizers

Details Controlled release fertilizers Controlled release fertilizers

1994-10-28

1997-05-20

Lander, Ferris

Chemistry: fertilizers

Processes and products

Organic material-containing

71 33, 71 6407, 71 6411, C05C 900, C05B 700, C05G 300

Patent

active

056308612

ABSTRACT:
Controlled-release fertilizers comprise one or more water-soluble fertilizer(s) together with improved magnesite cements, comprising cements selected from magnesium oxychloride and/or magnesium oxysulphate together with one or more organic carboxylic acid(s) and/or their carboxylate salts and/or their acid anhydrides.

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patent: 4041929 (1977-08-01), Cooksey
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patent: 4174420 (1979-11-01), Anolick
patent: 4699822 (1987-10-01), Shu
patent: 4786328 (1988-11-01), Weill et al.
patent: 4814014 (1989-03-01), Arfaei
patent: 4992481 (1991-02-01), von Bonin et al.
patent: 5264017 (1993-11-01), Van de Walle
Rossiter et al., Insulation Materials Testing and Applications (McElroy and Kimpflen, eds., Philadelphia 1990) 38-51 No Month.
Beaudoin et al., Am. Cer. Soc. Bull., 56(4), 424-7 (1977). No Month.
CA 72(20):103399c., Bochorov, Water Resistant Magnesia Cement Based on Caustic Dolomite.
Ved et al., Budivelni Mater. Konstr., (1), 35-6 (1969). No Month.
Stanboliev et al., Tonindustrie Zeitung, 100(1), 34-37 (1976). No Month.

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