US 8,025,894 B2Granted

Innovative formulation

AssigneeEndura S.p.A.

InventorsValerio Borzatta, Oreste Picolo, Elisa Capparella

Life of this patent

Estimating the term…

Loading patent…

Abstract

The present invention relates to a new formulation characterised by the presence of two components, one of which (A) possesses insecticidal, acaricidal, fungicidal, snailcidal or vermicidal activity and the other (B) exhibits synergistic activity with the first by enhancing its effectiveness, and in which the average release time of component (A) is 1 to 12 hours later than the average release time of component (B). The formulation is obtained by: a) separate microencapsulation of both components (A) and (B) within a multilayer system of specific polymers in which component (A) is in a more interior portion of the capsule than component (B), being separated from component (B) by a polymer layer of suitable thickness (FIG. 1); b) microencapsulation of both components within a single layer system (FIG. 2), combined with an immediate-release emulsion/microemulsion containing an additional amount of component (B).

Claims20

Dependent claims

A formulation comprising:

(a) a single layer microcapsule comprising:
(i) a capsule wall comprising polyesters, polyamides, polyureas, polycarbamates, polyurethanes or urea-formaldehyde polymers;
(ii) component (A) selected from the group consisting of Allethrin, Bioallethrin, Tetramethrin, Prallethrin, Cypermethrins, Esbiothrin, Permethrin, Fenpropathrin, Transfluthrin, Bifenthrin, Resmethrin, Bioresmethrin, Fenvalerate, Esfenvalerate, Etofenprox, Imiprothrin, Phenothrin, β-Cyfluthrin, Deltamethrin, Cyhalothrin, Imidacloprid, Acetamiprid, Thiacloprid, Thiodicarb, Carbosulfan, Carbofuran, Fenazaquin, Pyridaben, Fludioxonil, Imazalil, Pyrimethanil, Fenbendazole, Clotrimazole, Praziquantel, Fipronil, Pymetrozine and Pyridalyl, wherein (A) possesses insecticidal, acaricidal, fungicidal, snailcidal or vermicidal activity;
and
(iii) component (B) selected from the group consisting of piperonyl butoxide (PBO), sesamol, verbutin, MGK 264 and S,S,S-tributyl phosphorotrithioate (DEF), wherein (B) exhibits synergistic activity with (A) by enhancing its effectiveness;
and
(b) an immediate-release emulsion or microemulsion comprising an additional quantity of component (B),
wherein the average release time of component (A) is delayed by a time of between 1 and 12 hours.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/912,299Filed 20 Apr 2006
Priority: IT MI2005A072822 Apr 2005
Published: US 2009/0130156 A121 May 2009
Granted: 27 Sep 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

A01N 43/30
With two hetero atoms in positions 1,3: with two oxygen atoms in positions 1,3, condensed with a carbocyclic ring
A01N 25/28
In coated particulate form: microcapsules or nanocapsules
A01N 53/00
Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic
A61P 7/00
Drugs for disorders of the blood or the extracellular fluid