公开(公告)号：US3278377A

公开(公告)日：1966-10-11

申请号：US35152764

申请日：1964-03-12

申请人： SHELL OIL CO

发明人： FERRUCCI JR ANTHONY P

IPC分类号： B27K3/44 ,  B27K3/46

CPC分类号： A01N61/02 ,  B27K3/36 ,  B27K3/52 ,  A01N2300/00

摘要： A wood preservative composition having improved penetration properties comprises 15-90% by volume of coal-tar creosote, up to 45% by volume of coal tar, 7-66.5% by volume of paraffinic wax and 0.5-21% by volume of a high boiling paraffinic oil (i.e. an essentially hydrocarbon oil no more than 5% of which boils below 315 DEG C. at 1 atm. pressure), the volumetric ratio of creosote to coal tar being at least 1:1 and of wax to oil 2.3:1 to 19:1. The paraffinic wax may have a m.pt. of 35 DEG -58 DEG C. and the wax and/or oil may have an average M.W. of 280-340. The oil preferably contains at least 80% by volume of paraffinic hydrocarbons. 10 to 85% by volume of the paraffinic wax and oil content of the composition may be constituted by a soft wax product obtained by solvent de-oiling of crude wax obtained by solvent dewaxing of high viscosity index distillate lubricating oil.