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US 5,314,693 AGranted
Pest control chemicals against pine wood nematodes
AssigneeKioritz Corporation
InventorTakayuki Suga
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AssigneeKioritz Corporation
InventorTakayuki Suga
Estimating the term…
Disclosed are (1) pest control chemicals against the pine wood nematodes containing an extract from a pine tree with an organic solvent, (2) a repellent against the pine wood nematodes containing .alpha.-humulene or a mixture of .alpha.-humulene and .beta.-bisabolene, (3) a repellent against the pine wood nematodes containing a mixture of .alpha.-pinene and calarene, (4) a nematicide against the pine wood nematodes containing methyl ferulate, (+)-pinoresinol or a mixture thereof, and (5) highly effective pest control chemicals against pine wood nematodes containing hydroxystilbenes or salts thereof which are prepared by synthesizing methoxystilbenes from benzyl phosphonates and methoxybenzaldehydes by a Wittig-Horner reaction, performing demethylation to obtain the hydroxystilbenes, and preparing the salts thereof by conventional methods if necessary.
A process for preparing a hydroxystilbene or a salt thereof, said process comprising:
The method for controlling pine wood nematodes in wood, said method comprising treating the wood with an effective amount of a nematode control chemical comprising an extract from a pine tree with an organic solvent, the extract having pine wood nematode repellant activity or nematicidal activity.
A method for controlling pine wood nematodes in wood, said method comprising treating the wood with a repellent comprising a carrier containing a pine wood nematode repellent effective amount of .alpha.-humulene or a mixture of .alpha.-humulene and .beta.-bisabolene.
A method for controlling pine wood nematodes in wood, said method comprising treating the wood with a repellant comprising a carrier containing a pine wood nematode repellant effective amount of a mixture of .alpha.-pinene and calarene.
A method for controlling pine wood nematodes in wood, said method comprising treating the wood with a nematicide comprising a carrier containing a pine wood nematicidal effective amount of methyl ferulate, (+)-pinoresionol, or a mixture thereof.
A method for controlling pine wood nematodes in wood, said method comprising treating the wood with a composition comprising a carrier containing a pine wood nematode controlling effective amount of a hydroxystilbene or a salt thereof.
Dependencies are inferred from the claim text.