Patent ID: 6337079
Filing Date: 2002-01-08
Classification: A01N,Y10S

Abstract:
A termicidal product to prevent the presence of and/or to destroy termites comprising:an elongated solid core formed by extrusion, molding or sintering, said core constituting a solid macroscopic biodegradable matrix, said core having admixed therein at least one binding polymer and at least one substance active against termites releasable over a first period of time (T2), wherein the binding polymer is selected from the group consisting of vinyl and polyolefin polymers and copolymers, acrylic polymers and copolymers, polyamides, polyesters, silicones, polyurethanes and insoluble cellulosic derivates; and an elongated solid envelope surrounding said core and having admixed therein at least one substance active against termites, said active substance of said envelope being releasable by contact of said envelope with moisture wherein said envelope and said core form a solid body; wherein said envelope contains: from 1 to 98% by weight of said at least one substance active against termites, from 1 to 95% by weight of a binder, from 1 to 50% by weight of a plasticizer, and from 0 to 60% by weight of starch; and wherein the active substance of said envelope, when said product is exposed to moisture, is released over a second period of time, said second period of time corresponding at most to T2/10, such that the active substance of the envelope is released at least ten times more rapidly than the active substance of the core, said envelope releasing its said active substance over said second period of time so as to eliminate an infestation of termites and said core releasing its said active substance over said first period of time for preventing reinfestation of termites.