| 摘要 |
A process for separating lithium from a conjugated diolefin polymer wherein a solution containing said conjugated diolefin polymer and a lithium compound is contacted with magnesium phosphate, magnesium phosphate dibasic, magnesium dihydrogen phosphate or a mixture thereof. Preferably, the magnesium phosphate compound is selected from the group consisting of mono- and dihydrogen phosphates. Most preferably, the magnesium phosphate is magnesium phosphate dibasic. The magnesium phosphate, magnesium phosphate dibasic, magnesium dihydrogen phosphate or mixture thereof may be used in combination with water and/or methanol with relatively good results. The lithium, which is a polymerization catalyst, can be removed immediately after the conjugated diolefin polymer is prepared by contacting the polymer solution with the magnesium phosphate compound.
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