Drug – bio-affecting and body treating compositions – Inorganic active ingredient containing – Elemental sulfur or compound thereof
Patent
1997-01-31
1998-05-26
Pak, John
Drug, bio-affecting and body treating compositions
Inorganic active ingredient containing
Elemental sulfur or compound thereof
424703, 424713, 514546, 514547, 514549, 514552, 514785, 514786, A01N 5902, A01N 3702, A01N 3706, A01N 2530
Patent
active
057561281
DESCRIPTION:
BRIEF SUMMARY
This application is a 371 of PCT/JP95/01535, filed on Aug. 2,1995.
1. Technical Field
The present invention relates to an agricultural chemical preparation which can sufficiently show its efficacy even when it is used in a concentration lower than that conventionally used as well as a method for preparing the same.
2. Background Art
As agricultural chemicals, there have widely been used those comprising, as effective components, inorganic compounds such as copper compounds, mercury compounds and arsenic compounds; and organic compounds such as organic chlorine compounds and organic phosphorus compounds and these agricultural chemicals have contributed to a production increase of farm products. However, most of these agricultural chemicals act not only on the intended diseases and harmful insects, but also on beneficial insects and human beings and accordingly, there have been pointed out a bad influence thereof on human bodies and damage of environment.
Under such circumstances, Japanese Un-Examined Patent Publication (hereinafter referred to as "J. P. KOKAI") No. Sho 63-233902 an agricultural chemical preparation which can be used in a low dose as compared with previously used agricultural chemical preparations while ensuring the effect of controlling diseases and/or harmful insects to an extent comparable to that achieved by the previous agricultural chemical preparations and which would not be accompanied by any environmental pollution as well as a method for preparing the preparation.
However, this method requires the use of a volatile organic solvent such as ethanol and propanol as a solvent for dissolving a fatty acid ester of an aliphatic polyhydric alcohol during the production processes. There is a high possibility of causing an explosion or a fire if these organic solvents are volatilized during the processes for the production of such an agricultural chemical preparation and therefore, this method suffers from a serious problem from the practical standpoint.
In addition, these organic solvents must also be used for forming a stable aqueous emulsion of an agricultural chemical which comprises an agricultural effective component and a fatty acid ester of an aliphatic polyhydric alcohol prior to the spray of the agricultural chemical on farm products and it is impossible to form a uniform aqueous emulsion from a product comprising the foregoing components, which has been stored over a long time period after the production thereof and from which the foregoing organic solvents are lost through evaporation, when preparing a liquid formulation to be sprayed.
On the other hand, an agricultural chemical purchased by a farm household is seldom used up within a specific time period and accordingly, the rest is often stored while the sealed container is left open. In such case, the organic solvents required for the formation of the foregoing emulsion are lost through volatilization. Accordingly, the spraying solution prepared from such an agricultural preparation does not show its effect and the use of such a spraying solution becomes a cause of spray injury.
The foregoing preparation has not yet been practically used because of the foregoing problems concerning the preparation thereof.
DISCLOSURE OF THE INVENTION
It is an object of the present invention to provide an agricultural chemical preparation which can sufficiently show its efficacy even when it is used in a concentration lower than that of the corresponding agricultural chemical preparation conventionally used.
Another object of the present invention is to provide an agricultural chemical preparation having preventive and curative effects.
A still another object of the present invention is to provide a method for preparing the foregoing agricultural chemical preparations without using any volatile organic solvent such as ethanol and propanol.
The foregoing objects of the present invention can be accomplished by providing an agricultural chemical preparation which comprises 100 parts by weight of a fatty acid ester of an aliphatic polyhydric alc
REFERENCES:
patent: 5362707 (1994-11-01), Fiard et al.
Pak John
Rikagaku Kenkyusho
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