Insecticidal composition and method of preparing the same

Claim 2

A NON-POISONOUS INSECTICIDAL POWDERED COMPOSITION USEFUL AS A SORPTIVE DUST INSECTICIDE, EFFECTIVE ON CONTACT WITH THE INSECTS WAXY EPICUTE, COMPRISING INORGANIC SORPTIVE PARTICLES WITHIN THE RANGE OF FROM ABOUT 100 TO ABOUT 400 MESH TYLER SCREEN SIZE AND HAVING ADHERED TO THE SURFACE THEREOF A SORPTIVE SILLICA GEL CONSITUTING AT LEAST ABOUT 0.1 PERCENT BY WEIGHT OF THE TOTAL WEIGHT OF THE COATED PARTICLES AND SAID COMPOSITION HAVING A PACKED BULK DENSITY FROM ABOUT 15 TO ABOUT 100 LBS/FEET3.

Claim 3

A non-poisonous insecticidal powdered composition useful as a sorptive dust insecticide, effective on contact with the insect''s waxy epicute comprising inorganic sorptive particles within the range of from about 100 to about 400 mesh Tyler screen size and selected from the group consisting of diatomaceous earth, bentonites, sub-bentonites, montmorillonites, pyrophyllite, fuller''s earth, silica flour, carbon and perlite and having adhered to the surface thereof a sorptive silica gel, said silica gel ranging from about 0.1 to about 10 percent by weight of the total weight of the coated particles and said composition having a packed bulk density from about 15 to about 100 lbs/feet3.

Claim 4

A non-poisonous insecticidal powdered composition useful as a sorptive dust insecticide, effective on contact with the insect''s waxy epicute comprising inorganic sorptive particles within the range of from about 100 to about 400 mesh Tyler screen size and selected from the group consisting of diatomaceous earth, bentonites, sub-bentonites, montmorillonites, pyrophyllite, fuller''s earth, silica flour, carbon and perlite and having adhered to the surface thereof a sorptive silica gel, said silica gel ranging from about 0.1 to about 10 percent by weight of the total weight of the coated particles and said composition having a packed bulk density from about 15 to about 100 lbs/feet3.

Claim 5

A non-poisonous insecticidal powdered composition useful as a sorptive dust insecticide, effective on contact with the insect waxy epicute, comprising inorganic sorptive particles within the range of from about 100 to about 400 mesh Tyler screen size and having adhered to the surface thereof a sorptive silica gel, said silica gel being formed in situ in the presence of said inorganic particles to adhere to the surface thereof and constituting greater than 0.1 percent of the total weight of the coated particles and said composition having a packed bulk density from about 15 to about 100 lbs/feet3.

Claim 6

A non-poisonous insecticidal powdered composition useful as a sorptive dust insecticide, effective on contact with the insect waxy epicute, comprising inorganic sorptive particles within the range of from about 100 to about 400 mesh Tyler screen size and having adhered to the surface thereof a sorptive silica gel, said silica gel being formed in situ in the presence of said inorganic particles to adhere to the surface thereof and constituting greater than 0.1 percent of the total weight of the coated particles and said composition having a packed bulk density from about 15 to about 100 lbs/feet3.

Claim 7

The composition of claim 1 in which said inorganic particles are selected from the group consisting of diatomaceous earth, bentonites, sub-bentonites, montmorillonites, pyrophyllite, fuller''s earth, silica flour, carbon and perlite.

Claim 8

The composition of claim 1 in which said sorptive silica gel constitutes at least about 0.2 weight percent of the total weight of said composition.

Claim 9

The composition of claim 1 in which said sorptive silica gel is a silica hydrogel.

Claim 10

The composition of claim 1 in which said composition has a packed bulk density of from about 20 to about 30 pounds/cubic foot.

Claim 11

The composition of claim 1 in which said inorganic particles are diatomaceous earth.

Claim 12

The composition of claim 3 in which said composition has a packed bulk density of from about 20 to about 30 pounds/cubic foot.