This paper states that petroleum resin is synthesised by using fractions of C_9, which are the by-product of Daqing ethene unit.
研究了利用大庆乙烯生产装置副产的c_9馏分合成油溶性石油树脂。
This paper states that petroleum resin is synthesised by using fractions of C_9, which are the by-product of Daqing ethene unit.
研究了利用大庆乙烯生产装置副产的c_9馏分合成油溶性石油树脂。
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