| abstract |
A wood preservative that comprises as an active ingredient a Pipernmethysticum, plant or a processed product thereof or a compoundnrepresented by Formula (I):n nwherein R 1 , R 2 , R 3 , R 4 and R 16 are same or different and each denotes anhydrogen atom, hydroxy or a C 1-4 alkoxy, or R 1 and R 2 are taken together tonform a group represented by -O-(CH 2 ) n -O- wherein n is an integer of 1 to 3,nR 5 is a C 1-4 alkoxy and X is -CH=CH-, -CH 2 -CH 2 - or epoxyethylene, and thenbond: ndenotes a single bond or a double bond can prevent the attacking wood by anninsect harmful to the wood and also prevents the appearance and thengrowth of a wood-rotting fungus or a wood- staining fungus while beingnhighly safe to humans and animals without exerting no adverse effect on thenenvironment. |