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目前,中国正在加速淘汰(氢氯氟碳烃)HCFCs,HFC-245fa作为过渡型产品属于(氢氟碳烃)HFCs,国家对HFCs暂时没有政策限制,但GWP高,国家也不鼓励推广。与此同时,国际巨头霍尼韦尔、杜邦则倡导(氢氟氧烯烃)HFO烯烃HCFO-1233zd三氟丙烯(LBA)、HFO-1336mmz(六氟丁烯)FEA-1100替代HFC-245fa、HFC-365mfc成为第4代发泡剂。此外,霍尼韦尔公司HFC-245fa制备专利于2015年7月
At present, China is accelerating the phase-out of (HCFCs) HCFCs. HFC-245fa is a transitional product that belongs to (HFC) HFCs. The country has no policy restrictions on HFCs temporarily, but GWP is high, and the country does not encourage promotion. At the same time, the international giants Honeywell and DuPont promoted (hydrofluoroethylene olefins) HFO olefins HCFO-1233zd trifluoropropene (LBA), HFO-1336mmz (hexafluorobutylene) FEA-1100 instead of HFC-245fa, HFC -365mfc becomes the fourth generation foaming agent. In addition, Honeywell’s HFC-245fa preparation patent was issued in July 2015.