Co-extrustion of multi-component insecticidal pet collars

Details Co-extrustion of multi-component insecticidal pet collars Co-extrustion of multi-component insecticidal pet collars

1984-10-15

1989-02-14

Swiatek, Robert P.

Animal husbandry

Waste toilet or related device

Walled receptacle; e.g., litter box, etc., containing...

119156, A01K 2700

Patent

active

048039560

ABSTRACT:
Co-extruded insecticidal pet collars contain one or more active insecticidal components in a desired relationship to the skin of the animal. The outside layer (away from the skin) contains carbamate, organo-phosphate chlorinated hydrocarbon or other insecticide that is irritating to the skin, or a cholinesterase inhibitor. The inside layer acts as a barrier to the insecticide. The layers of a multi-layered collar which is prepared by extrusion may also contain different insecticidal systems. A co-extruded collar is prepared by preparing two blends which have varying concentrations of active and/or inert ingredients, depending on the end product which is desired. Each of the blends is fed into an extruder wherein the polyvinyl chloride is fused. The melt blend from extruder B is then transferred to the die of extruder A where it becomes an integral part of the extruded strip from extruder A.

REFERENCES:
patent: 3904746 (1975-09-01), Aries
patent: 3978820 (1976-09-01), Drehman
patent: 4031859 (1977-06-01), Stewart
patent: 4150109 (1979-04-01), Dick et al.
patent: 4158051 (1979-06-01), Greenberg et al.
patent: 4218991 (1980-08-01), Cole
patent: 4224901 (1980-09-01), Carey, Jr.

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