prov:value
| - Generally, based upon 100 parts by weight of copolymer to be produced, then about 50 to 1220, preferably 100 to 600, parts by weight of solvent, e.g. hydrocarbons such as benzene, hexane, cyclohexane, etc., and about 0.1 to 20, e.g. 1 to 5, parts by weight of promoter will be used.
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