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US 3,943,201 AGranted
Alkoxy carboxycarbonylphosphonic acid esters
AssigneeE. I. Du Pont de Nemours and Comapny
InventorColin Leslie McIntosh
Life of this patent
Estimating the term…
Abstract
Alkoxycarbonylphosphonic acids and alkylthiocarbonylphosphonic acids and esters and salts of these acids such as diammonium methoxycarbonylphosphonate are useful for regulation of the growth rate of plants.
Claims4
A compound of the formula;
- ##EQU8## wherein Z is oxygen;
- R is alkyl of 1 to 8 carbon atoms, optionally substituted with a chlorine, bromine, fluorine, or iodine;
- alkenyl of 3 to 8 carbon atoms;
- or ##SPC2##
- wherein
- A is chlorine or methyl,
- B is chlorine or methyl,
- n is 0 or 1, and
- m is 0 or 1;
- R.sub.5 is alkyl of 1 to 6 carbon atoms, alkenyl of 3 to 4 carbon atoms, or benzyl;
- and
- M is hydrogen, sodium, lithium, potassium, calcium, magnesium, manganese, barium, or ##EQU9## wherein R.sub.1 is hydrogen, alkyl of 1 to 4 carbon atoms, or hydroxyalkyl of 2 to 4 carbon atoms;
- R.sub.2 is hydrogen, alkyl of 1 to 4 carbon atoms, or hydroxyalkyl of 2 to 4 carbon atoms;
- R.sub.3 is hydrogen, alkyl of 1 to 4 carbon atoms, or hydroxyalkyl of 2 to 4 carbon atoms;
- and
- R.sub.4 is hydrogen or alkyl of 1 to 12 carbon atoms,
- provided that the total number of carbon atoms in R.sub.1, R.sub.2, R.sub.3, and R.sub.4 is less than 16.
14 more elements
Dependencies are inferred from the claim text.