| 摘要 |
1. Method of producing coumarone-indene resins by cation polymerisation of unsaturated agents such as: styrene, indene, coumarone, methylindene contained in coumarone-indene fraction obtained from heavy benzyl or carbolic oil, following prior removal of pyridine from the fraction; is characterised in that the pyridine is removed from the coumarone-indene fraction by one or multi-phase application of the strongly acidic form of sulfonic-cation
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