| 摘要 |
1. Use for lubrication purpose of products having the following general formula : see diagramm : EP0088650,P4,F3 where m and n have the value 1 or 2, x and z the value from 0 to 2, a and b vary from 0 to 3 with a+b=3, c and d vary from 0 to 2 with c+d=2, (mb+nd) varies from 0 to (3m+2n-2) and x+z+mb+nd is other than 0, and when b is other than 0, d is also other than 0. |
