Insecticidal polymer matrix comprising hdpe and ldpe

An insecticidal and polymer technology, applied in the direction of insecticides, biocides, animal repellents, etc., can solve the problems of not indicating the content of PBO

Inactive Publication Date: 2011-07-13
VESTERGAARD FRANDSEN AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

While stating precise figures for enclosing PBO and DM in aqueous suspension within microcapsules to delay the release of DM relative to PBO, this disclosure does not suggest at all that PBO relative to PBO in a polymer matrix (such as a polyethylene matrix) DM content, at this time insects should be exposed to both PBO and DM because DM and PBO migrate to the substrate surface

Method used

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  • Insecticidal polymer matrix comprising hdpe and ldpe
  • Insecticidal polymer matrix comprising hdpe and ldpe
  • Insecticidal polymer matrix comprising hdpe and ldpe

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Embodiment Construction

[0059] In terms of solution, the path to the present invention does involve several intermediate steps, simple but not straightforward.

[0060] In teachings in the field of insecticidal nets, it has currently been assumed that PBO must be pre-delivered to mosquitoes well before exposure to DM, as it is believed that PBO needs to be in the mosquito for a period of time before temporarily disrupting the resistance mechanisms. The aforementioned International Patent Application WO 2006 / 11155 reflects this. Because PBO is degraded by sunlight / visible light to generate free radicals that cause DM degradation, it is currently believed that providing PBO and DM on the net surface at the same time and at the same location is an obstacle to effective insecticidal nets, because mosquitoes must be exposed to DM before DM exposure. The time lapse between exposures to PBO simultaneously resulted in DM degradation. The conclusion implied at this point is that polymers doped with DM and PB...

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Abstract

Provided is an insecticidal polymer matrix comprising HDPE and LDPE An insecticidal polymer matrix containing HDPE (high density polyethylene), LDPE (low density polyethylene), preferably containing PBO (Piperonyl Butoxide) and DM (Deltamethrin), wherein the ratio of the contents of HDPE to LDPE is between 5 and 20 and most preferably between 8 and 10. The matrix is highly useful for bed nets against mosquitoes.

Description

technical field [0001] The present invention relates to an insecticidal polymer matrix comprising HDPE and LDPE. Background technique [0002] With regard to insecticide control, it is known that insecticides can be incorporated into polymeric materials to prevent insects from penetrating the material. However, this is seen as a difficult problem when controlling the release rate of insecticides in polymer matrices, because too fast release quickly depletes the matrix in consideration of the insecticidal effect, and when the insecticide falls off or by e.g. Too slow release does not have the desired efficiency or proper regenerative properties when removed by wash. [0003] In the case of crop flakes, it is known to blend LDPE with other polymers, as disclosed in US 4,888,174, to reduce migration speed. This is consistent with International Patent Application WO 02 / 34487, which states that "the choice of polymer depends on the desired release rate", where the disclosure pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N53/00A01N25/10A01N43/30A01N25/34A01P7/04
CPCD01F1/10A01N53/00D01F6/46A01N25/10A01N25/34A01N43/30A01N2300/00
Inventor 米凯尔·韦斯特高·凡德森迈克尔·斯坦利·彼得森马修·齐薇格塞巴斯蒂安·古安希柯·德克·鲁尔达潘氏琼芝
Owner VESTERGAARD FRANDSEN AS
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