Insecticide-containing netlike fabric
AssigneeBayer CropScience AG
InventorsRainer Sonneck, Thomas Bocker, Karin Horn, Guenther Nentwig, Maren Heinemann, Thomas Konig
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Abstract
The present invention relates to an insecticide-containing fabric containing at least one embedded insecticidally active ingredient in the polymeric matrix and having excellent wash resistance, and also to the products produced from this fabric and to their use for protecting humans, animals and plants against arthropods, particularly for controlling insects.
Claims19
A netlike fabric comprising at least one insecticidally active ingredient and at least one polymeric material, wherein said netlike fabric has a biological activity in accordance with WHOPES guidelines of a knockdown after 60 minutes of between 95% and 100% or a mortality after 24 hours of between 80% and 100% after at least 25 washes.
A netlike fabric comprising at least one insecticidally active ingredient and at least one polymeric material, wherein in accordance with the WHOPES guidelines the netlike fabric has a retention index r of formula (I)
- r=n√{square root over ((tn/t0))} (I)
- after at least 5 washes, where
- tn=total active ingredient content after n washes (g/kg),
- t0=total active ingredient content after 0 washes (g/kg), and
- n=number of washes,
- of at least 95%.
A method for producing spun threads comprising one or more insecticidally active ingredients and a polymeric material, comprising:
- a) melting the polymeric material and the one or more insecticidally active ingredients together or separately at a temperature of between 120 and 250° C.,
- b) forming the melted mixture of step a) into spun threads and cooling,
- c) optionally leading the spun threads formed in step b) through a drawing system and drawing,
- d) subjecting the spun threads to a heat-setting operation wherein the temperature for the heat-setting operation is 20° C. below the melting temperature of the polymeric material.
A netlike fabric comprising one or more insecticidally active ingredients and a polymeric material, produced by:
- a) melting the polymeric material and the one or more insecticidally active ingredients together or separately at a temperature of between 120 and 250° C.,
- b) forming the melted mixture of step a) into spun threads and cooling,
- c) optionally leading the spun threads formed in step b) through a drawing system and drawing,
- d) knitting the spun threads to form a preliminary netlike fabric, and
- e) subjecting the preliminary netlike fabric to a heat-setting operation wherein the temperature for the heat-setting operation is 20° C. below the melting temperature of the polymeric material.
Dependencies are inferred from the claim text.