Chinoin Gyogyszer Es Vegyeszeti Termekek Gyara Rt.

Erzsebet Radvany Nee Hegedus

Jozsef Szejtli

Istvan Racz

Gyorgy Lugosi

Maria Bakonyi

Gabriella Pap Nee Imrenyi

Tibor Zsolnai

Laszlo Papp

Zsuzsanna Budai

Gyorgy Kormoczy

Istvan Szepesi

The invention relates to new inclusion complexes of piperonyl butoxide formed with cyclodextrin. The new complex of the invention can be prepared by reacting cyclodextrin or a solution thereof formed with water and/or an organic solvent having 1-4 carbon atoms, preferably ethanol with piperonyl butoxide or a solution thereof formed with an organic solvent having 1-4 carbon atoms, preferably ethanol at a temperature between 20.degree. C. and 90.degree. C., whereby the piperonyl butoxide is used in an amount of 0.6-1.5 moles related to 1 mole of cyclodextrin. The complexes of the present invention synergize the pesticidal effect of known insecticides and fungicides to a much higher extent of known insecticides and fungicides to a much higher extent than piperonyl butoxide used per se.

Cyclodextrin inclusion complex of piperonyl butoxide

The invention relates to a method of combatting phytopathogenic fungi, primarily powdery mildew. The method involves administering compositions according to the invention which contain as active principle at least one compound of the formula (I), ##STR1## wherein R.sup.1 is a C.sub.1-12 alkyl or a chloroethyl group,

Method of treating fungus-infected plants with phenylazocyanoacetic

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Budapest, Hungary

Erzsebet Radvany Nee Hegedus