Pesticidal tape for controlling crawling pests

Abstract

In a tape for controlling crawling pests, on the first side (S1) is a carrier layer having a multitude of vertically extending structures, and on the opposite side (S2) is a means for attaching the tape to a surface. At least the first side (S1) is impregnated with a composition of A) 0.1 to 45% by weight (based on the total of A plus B) of one or more insecticides and B) 99.9 to 55% by weight (based on the total of A plus B) of an (meth)acrylate binder of one or more homo- or copolymer having units derived from one or more acrylates and/or methacrylates.

Claims

1. A tape for controlling crawling pests, comprising on the first side (S1) a carrier layer, comprising a multitude of vertically extending structures, and on the opposite side (S1) means for attaching the tape to a surface, wherein at least the first side (S1) is impregnated with a composition comprising A) 0.1 to 45% by weight (based on the total of A plus B) of one or more insecticides and B) 99.9 to 55% by weight (based on the total of A plus B) of a (meth)acrylate binder comprising one or more homo or copolymer, comprising units derived from one or more acrylates and/or methacrylates.

2. The tape of claim 1 characterized in that the carrier layer is a hook and loop strip and the vertically extending structures are hooks or loops.

3. The tape of claim 1, characterized in that the attachment means comprises a sticky layer and a cover layer wherein the sticky layer is attached to the second surface of the carrier layer with a first surface of the sticky layer and the cover layer is attached to a second surface of the sticky layer opposite to the first surface of the sticky layer.

4. The tape of claim 1 characterized in that the insecticide is selected from pyrethroids, chlorfenapyr, fipronil or a mixture of two of those insecticides.

5. The tape of claim 4 characterized in that the insecticide is alpha-cypermethrin.

6. The tape of claim 1 characterized in that the (meth)acrylate binder (B) is obtainable by emulsion polymerization of B1) 20 to 93% by weight (based on B) of one or more (meth)acrylates of the formula (I)
H.sub.2CCR.sup.1COOR.sup.2(I) where R1 is H or CH3 and R2 is a linear or branched C1-C12-alkyl group; B2) 1 to 5% by weight (based on B) of at least one monomer selected from the group consisting of N-methylolacrylamide, N-methylolmethacrylamide, N,N-bismethylolmaleic diamide and N,N-bismethylolfumaric diamide; B3) 0.2 to 5% by weight (based on B) of at least one monomer selected from the group consisting of acrylic acid, methacrylic acid, vinylsulfonic acid, maleic acid and fumaric acid; B4) 0 to 5% by weight (based on B) of at least one monomer selected from the groups B4A) monomers of the formula (II) and/or (III),
H.sub.2CCR.sup.3X(II)
ZHCCHZ(III) where the symbols have the following meanings: R3 is H or CH3, X is Z, CONHCH2-NHCOCR3=CH2 or COOCH2-COCH2-COOR4; Z is CONH2, CONHCH2-OR5, COOYOH, CO-glycidyl, CHO or COYOH; Y is C1-C8-alkylene and R4, R5 are identical or different and are a linear or branched C1-C10-alkyl group; B4B) allyl acrylate, methallyl acrylate, allyl methacrylate, methallyl methacrylate, diallyl maleate, dimethallyl maleate, allyl fumarate, methallyl fumarate, diallyl phthalate, dimethallyl phthalate, diallyl terephthalate, dimethallyl terephthalate, p-divinylbenzene and ethylene glycol diallyl ether; B5) 0 to 40% by weight (based on B) of at least one monomer selected from the groups B5A) acrylonitrile, methacrylonitrile, maleonitrile and fumaronitrile and/or B5B) unpolar ethylenically unsaturated monomers other than B1-B4.

7. The tape of claim 1 characterized in that the (meth)acrylate binder has been crosslinked with a crosslinker which has free isocyanate groups.

8. A method for controlling crawling pests comprising the placement of a tape according to claim 1 at the perimeter of an area to be protected.

9. A method of protecting humans and domestic animals in a building from crawling pests characterized in that a tape according to claim 1 is placed in the building.

10. A method of producing a tape according to claim 1, comprising the steps of a) providing a tape comprising a first side (S1) which is a carrier layer, comprising a multitude of vertically extending structures, and an opposite side (S1) comprising attachment means for attaching the tape to a surface, and b) impregnating the first side (S1) with a composition comprising A) 0.1 to 45% by weight (based on the total of A plus B) of one or more insecticides and B) 99.9 to 55% by weight (based on the total of A plus B) of a (meth)acrylate binder according to the invention.

Description

EXAMPLES

(1) A) (Meth)acrylate Binder

(2) Preparation of the Polymer Dispersions

(3) General Procedure

(4) 250 g of water and 3 g of styrene seed latex (33% by weight) with a mean particle size of 30 nm are heated to 85 C., whereupon 5% by weight of the feed 2 are added. After 10 min, the addition of feed 1 (see below) and the remainder of feed 2 starts.

(5) Feed 2 comprises 30 g of sodium peroxydisulfate dissolved in 39.9 g of H.sub.2O. The composition of feed 1 is shown in table 1. Feeds 1 and 2 are added in the course of 3 hours, followed by afterpolymerization for 0.5 hour.

(6) TABLE-US-00001 TABLE 1 Composition of feed 1 in % by weight pphm (parts per hundred monomers) Monomer composition MMA S AN EHA BA EA MaMol AMol AM AS A 1 16.6 30.0 30.0 20.0 3.0 0.4 A 2 25.7 5.0 5.3 60.0 3.5 0.5 A 3 14.7 11.0 70.0 3.5 0.5 0.3 A 4 30.0 13.0 8.0 45.2 3.0 0.5 0.3 A 5 20.0 20.0 17.0 23.0 15.3 3.5 1.2 A 6 9 36.9 43.4 3.2 1.2 A 7 26.0 13.0 57.0 3.0 1.0 A 8 15.0 13.0 68.0 3.0 1.0 A 9 16.0 81.0 2.0 1.0

(7) The amount of the initiator sodium peroxydisulfate is 0.3 parts by weight, that of the emulsifier 0.4 parts by weight of Dowfax 2A1 (Dow) and 0.6 parts by weight of Lumiten IRA (BASF SE), based on 100 parts by weight of the monomer composition of table 1.

(8) Abbreviations

(9) MMA: Methyl methacrylate S: Styrene AN: Acrylonitrile EA: Ethyl acrylate EHA: 2-Ethylhexyl acrylate BA: n-Butyl acrylate Amol: N-Methylolacrylamide MAMol: N-Methylolmethacrylamide AS: Acrylic acid AM: Acrylamide

(10) ##STR00001##
B) Tapes

(11) TABLE-US-00002 TABLE 1 Tapes evaluated The tapes are supplied with a hook and loop material as indicated and are treated with formulations as indicated. Color/ Color/ hook hook Tape.sup.1 Active.sup.2/rate Binder.sup.3 or loop Tape Active.sup.2/rate Binder.sup.3 or loop tape 1 Alpha 0.1% Black tape 13 Alpha 0.5% Black 200 mg/m.sup.2 Loop 0.25% Loop tape 2 0.1% White tape 14 0.5% White Loop Loop tape 3 0.1% Black tape 15 0.5% Black Hook Hook tape 4 0.1% White tape 16 0.5% White Hook Hook tape 5 CFP 0.1% Black tape 17 CFP 0.5% Black 200 mg/m.sup.2 Loop 0.25% Loop tape 6 0.1% White tape 18 0.5% White Loop Loop tape 7 0.1% Black tape 19 0.5% Black Hook Hook tape 8 0.1% White tape 20 0.5% White Hook Hook tape 9 Alpha 0.1% Black tape 21 Alpha 0.5% Black 100 mg + Loop 0.125% + Loop tape 10 CFP 0.1% White tape 22 CFP 0.5% White 100 mg/m.sup.2 Loop 0.125% Loop tape 11 0.1% Black tape 23 0.5% Black Hook Hook tape 12 0.1% White tape 24 0.5% White Hook Hook Untreated Black Untreated Black Loop Hook White White Loop Hook .sup.1Samples 1-12 supplied with adhesive backing attached. .sup.2Alpha = alpha-cypermethrin, CFP = chlorfenapyr. .sup.3Based on binder A6 Tapes provided with active ingredient rates as shown.
Methods

(12) Wooden dowel rods (2.4 cm dia) were cut to 10 cm lengths. Treated hook and loop strips, 2 cm wide, were cut to length (7.5 cm) and wrapped around the rods, one each, 6 cm from one end. Tapes 1-12 were secured by adhesive backing on the strips. Tapes 13-24 did not have adhesive backing and so were secured with hot glue. After securing the strips, hot glue was applied to the end of the dowel farthest from the strip and secured vertically to a 10 cm plastic Petri dish or lid. The dowel was marked 3 cm from the dish/lid as the introduction point for bed bugs. For evaluations, one adult bed bug was placed on the marked release point on the dowel and a timer started. Time to reach and cross (exposure time to the treatments) the strip was recorded. Cases in which the insect mounted and subsequently left the strip without crossing were noted and the total time on the strip recorded upon final crossing. Insects that would mount but not cross the strip after an extended period of time were removed and the time on the strip recorded. Three replicates of six individual bed bugs (18 total insects per treatment) of the 24 treated samples were conducted. After exposure, each insect was held individually in six-well cell culture plates, one piece of filter paper per well, for observation. Mortality was evaluated at 1, 2, 3, 6, and 9 days post exposure.

(13) Results

(14) Tape crossing events (Table 2)

(15) TABLE-US-00003 TABLE 2 Bed bug crossing data for pesticidal treated hook and loop tapes affixed to vertical wooden dowels Number Number of insects of insects Color/ never with hook or Time on strip (sec) crossing multiple Tape Active.sup.1/rate Binder.sup.3 loop .sup.2 Medin strip .sup.4 mounts tape 1 Alpha 0.1% B/L 36.2 16.5 4 3 tape 2 200 mg/m2 0.1% W/L 18.1 12.5 0 2 tape 3 0.1% B/H 36.2 33.5 6 8 tape 4 0.1% W/H 33.7 35.0 9 7 tape 5 CFP 0.1% B/L 13.1 7.0 1 1 tape 6 200 mg/m2 0.1% W/L 14.3 9.0 1 1 tape 7 0.1% B/H 32.9 22.5 5 5 tape 8 0.1% W/H 30.3 23.0 2 2 tape 9 0.1% B/L 30.9 17.5 5 2 tape 10 0.1% W/L 13.3 10.5 3 2 tape 11 0.1% B/H 32.4 24.0 9 5 tape 12 0.1% W/H 27.8 22.0 7 6 tape 13 0.5% B/L 12.8 8.0 0 5 tape 14 0.5% W/L 11.4 9.5 0 6 tape 15 0.5% B/H 16.3 10.0 0 3 tape 16 0.5% W/H 17.7 13.0 0 3 tape 17 0.5% B/L 12.8 8.0 0 1 tape 18 0.5% W/L 10.4 7.5 0 2 tape 19 0.5% B/H 18.4 10.5 0 3 tape 20 0.5% W/H 17.9 17.5 0 4 tape 21 0.5% B/L 11.3 9.0 0 1 tape 22 0.5% W/L 14.8 8.5 0 3 tape 23 0.5% B/H 18.4 13.5 0 0 tape 24 0.5% W/H 22.5 15.5 0 5 Unt BL B/L 28.5 23.0 0 1 Unt WL W/L 11.6 9.0 0 2 Unt BH B/H 38.2 31.5 11 2 Unt WH W/H 32.6 30.0 6 8 .sup.1Alpha = alpha-cypermethrin, CFP = chlorfenapyr. Treatments provided with active ingredient rates as shown. Samples 1-12 were provided with adhesive strips, no adhesive on samples 13-24. .sup.2 B = black, W = white, L = loop side, H = hook side. 3Based on binder A6 .sup.4 Bed bug exposures replicated three times, six individual bed bugs per replicate (18 total insects).

(16) Untreated hook tapes were the most difficult for bed bugs to cross. This may be due to the deformation of hooks during treatment resulting in slightly flattened hooks relative to untreated tapes.

(17) Mortality (Table 3)

(18) TABLE-US-00004 TABLE 3 Bed bug mortality data from contacting/crossing insecticide treated hook and loop tapes affixed to vertical wooden dowels Color/hook Mean % dead at: .sup.4 Tape Active/rate.sup.1 Binder.sup.3 or loop .sup.2 2 d 3 d 6 d 9 d tape 1 Alpha 0.10% B/L 44.4 55.6 55.6 55.6 72.2 tape 2 200 mg/m2 0.10% W/L 16.7 27.8 44.4 44.4 66.7 tape 3 0.10% B/H 11.1 16.7 22.2 50.0 66.7 tape 4 0.10% W/H 11.1 33.3 50.0 66.7 83.3 tape 5 CFP 0.10% B/L 0.0 0.0 0.0 22.2 61.1 tape 6 200 mg/m2 0.10% W/L 0.0 0.0 0.0 0.0 44.4 tape 7 0.10% B/H 0.0 5.6 5.6 27.8 27.8 tape 8 0.10% W/H 0.0 0.0 0.0 11.1 27.8 tape 9 Alpha 0.10% B/L 5.6 11.1 22.2 33.3 55.6 tape 10 100 mg + CFP 0.10% W/L 11.1 16.7 22.2 44.4 61.1 tape 11 100 mg/m2 0.10% B/H 0.0 11.1 16.7 27.8 61.1 tape 12 0.10% W/H 5.6 5.6 5.6 27.8 50.0 tape 13 0.50% B/L 22.2 22.2 50.0 83.3 83.3 tape 14 0.50% W/L 16.7 22.2 27.8 50.0 72.2 tape 15 0.50% B/H 11.1 22.2 22.2 38.9 44.4 tape 16 0.50% W/H 11.1 22.2 33.3 44.4 66.7 tape 17 0.50% B/L 5.6 11.1 16.7 33.3 44.4 tape 18 0.50% W/L 0.0 0.0 5.6 22.2 27.8 tape 19 0.50% B/H 0.0 0.0 5.6 11.1 16.7 tape 20 0.50% W/H 0.0 0.0 0.0 0.0 5.6 tape 21 0.50% B/L 0.0 0.0 11.1 27.8 38.9 tape 22 0.50% W/L 11.1 16.7 22.2 44.4 50.0 tape 23 0.50% B/H 0.0 11.1 16.7 22.2 33.3 tape 24 0.50% W/H 5.6 11.1 11.1 27.8 38.9 Unt BL B/L 0.0 0.0 0.0 16.7 38.9 Unt WL W/L 0.0 0.0 0.0 5.6 11.1 Unt BH B/H 0.0 5.6 5.6 16.7 44.4 Unt WH W/H 5.6 5.6 11.1 16.7 16.7 .sup.1Alpha = alpha-cypermethrin, CFP = chlorfenapyr. Tapes provided with active ingredient rates as shown. Tapes 1-12 were provided with adhesive strips, no adhesive on samples 13-24. .sup.2 B = black, W = white, L = loop side, H = hook side. .sup.3Based on binder A6 .sup.4 Bed bug exposures replicated three times, six individual bed bugs per replicate (18 total insects).

(19) Treatments of alpha-cypermethrin alone provided the longest bed bug exposures to treatment (longest time to cross) and the highest mortality, ranging from 39-83%.