US 4,225,521 AGranted

Herbicidal phosphonates

AssigneeE. I. Du Pont de Nemours and Company

InventorRichard F. Sauers

Life of this patent

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Abstract

This invention relates to phosphorus containing compounds which are useful as herbicides. Additionally, they demonstrate tolerance towards desired crops, e.g., cotton, soybeans and sugarbeets.

Claims8

Dependent claims

A compound of the formula ##STR241## wherein R is C.sub.1 -C.sub.4 alkyl or phenyl;

R.sub.1 is C.sub.1 -C.sub.4 alkoxy;
and
R.sub.2 is alkyl of 1 to 6 carbons, alkenyl of 3 to 4 carbons, cycloalkyl of 5-6 carbons or said cycloalkyl substituted with methyl.

Dependencies are inferred from the claim text.

Facts

Application: 05/930,603Filed 1 Aug 1978 · continuation in part
Priority: 23 Jun 1978
Granted: 30 Sep 1980
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

C07F 9/655345
Having sulfur atoms, with or without selenium or tellurium atoms, as the only ring hetero atoms: the sulfur atom being part of a five-membered ring
A01N 57/18
Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds: having phosphorus-to-carbon bonds
A01N 57/26
Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds: having phosphorus-to-nitrogen bonds
C07F 9/145
Esters of phosphorous acids: with hydroxyaryl compounds

Family

Serial917,388Parent of this continuation-in-part · filed 23 Jun 1978
US 4,225,521 AThis patent

From the US filing history. Foreign family members aren’t listed.

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