Insecticidal polymer matrix comprising hdpe and ldpe

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...

AI Technical Summary

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

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