| 摘要 |
A polyalkenyl bis-(succinic acid) or a polyalkenyl bis-(succinic anhydride) (PABSA) in which the polyalkenyl group is derived from a polyolefin having an M n in the range from 500 to 2100 and compositions containing PABSA having the specified polyalkenyl group in combination with the corresponding mono-(succinic acid or anhydride). A particular feature of the process for producing PABSA by reaction of a polyolefin with maleic acid or maleic anhydride is the use of either a stream of gas, subatmospheric pressure or a nickel salt, e. g. nickel iodide, as catalyst. |
