In BPA production impurities in raw material phenol can poison mercaptan radical contained in resin catalyst, and sulphonic acid radical also in resin is easy to lose in higher temperature medium.

 
  • 摘要巰基化樹(shù)脂催化劑用于雙酚A生產(chǎn),易被原料苯酚中的雜質(zhì)中毒,而且在較高的介質(zhì)溫度下磺酸基流失明顯。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan