Patent GB-830655-A (GB)
Title: Improvements in or relating to dry, seed-dressing compositions
Inventor: EATON JOHN KENNETH
IPC: A01N25/12
Filed: 1956-07-30
Abstract: In order to protect seeds against attack by insects, wireworm &c they are dressed with a dry, pulverulent, free-flowing composition comprising 15 to 65% by weight of at least one of the insecticides aldrin, dieldrin, isodrin or endrin incorporated with sufficient absorbent diluent powder, containing 1 to 20% of its weight of a substantially non-volatile, non-phytotoxic oil, to yield a non-free-flowing mixture, and a minor proportion, e.g. 5 to 15% by weight, of free-flowing substantially non-absorbent solid particles sufficient to make the composition free-flowing. The oil-treated diluent powder may constitute 65 to 10% by weight of the composition. The diluent powder may be talc, diatomaceous earth, magnesite, calcium carbonate, hydrated calcium-silicate or china clay.  The substantially non-absorbent particles may be particles of sand, quartz, flint, glass or graphite.  The oil is preferably a mineral spindle oil, but castor or olive oil may be used.  The oil may contain an antioxidant. The composition preferably contains an agent which neutralizes acids such as urea or hexamethylenetetramine.  The composition may contain 1 to 20% of a fungicide such as phenyl-mercury chloride or acetate, phenyl-mercury urea, ethyl-mercury chloride preferably mixed with phenyl-mercury acetate, ethyl-mercury phosphate, methoxyethyl-mercury acetate, tetramethyl-thiuram disulphide, chloranil, 2 : 3-dichloro-1 : 4-naphthaquinone or ferric dimethyl-dithiocarbamate.  The composition may contain up to 10% of an oil-free absorbent mineral powder, e.g., one of the above-mentioned diluent powders.  The composition may also contain up to 0,5% of a tracer dye, such as oil-soluble violet, and/or up to 6% of a colour such as Turkey red, ferric oxide, chrome yellow and Indian red.  Methods for testing powders to determine whether they are or are not free-flowing and their bulk densities are described.  Specifications 692,546, 692,547, 714,688 and 772,193 are referred to.ALSO:A dry, pulverulent, free-flowing composition for dressing seeds comprises 15 to 65% by weight of at least one of the insecticides aldrin, dieldrin, isodrin or endrin incorporated with sufficient absorbent diluent powder, containing 1 to 20% of its weight of a substantially non-volatile, non-phytotoxic oil, to yield a non-free-flowing mixture, and a minor proportion, e.g. 5 to 15% by weight of free-flowing substantially non-absorbent solid particles sufficient to make the composition free-flowing.  The oil-treated diluent powder may constitute 65 to 10% by weight of the composition. The diluent powder may be talc, diatomaceous earth, magnesite, calcium carbonate, hydrated calcium silicate or china clay.  The substantially non-absorbent particles may be particles of sand, quartz, flint, glass or graphite.  The oil is preferably a mineral spindle oil, but castor or olive oil may be used.  The oil may contain an antioxidant.  The composition preferably contains an agent which neutralizes acids such as urea or hexamethylene tetramine.  The composition may contain 1 to 20% of a fungieide such as phenyl-mercury chloride or acetate, phenyl-mercury urea, ethyl-mercury chloride preferably mixed with phenyl-mercury acetate, ethyl-mercury phosphate, methoxy - ethyl - mercury acetate, tetramethyl - thiuram disulphide, chloranil, 2 : 3 - dichloro - 1 : 4 - naphthaquinone or ferric dimethyldithiocarbamate.  The composition may contain up to 10% of an oil-free absorbent mineral powder, e.g. one of the above-mentioned diluent powders.  The composition may also contain up to 0.5% of a tracer dye, such as oil-soluble violet, and/or up to 6% of a colour such as Turkey red, ferric oxide, chrome yellow and Indian red.  Methods for testing powders to determine whether they are or are not free-flowing and their bulk densities are described.  Specification 692,546, 692,547, 714,688 and 772,193 are referred to.