求教如何查询以下三个文献?拜谢!!!!!!
Kawabe K,Yokkaichi. Process for simultaneous producing of ethylene
glycol and carbonate ester: US,6380419[P]. 2002 - 04 - 30.
[11] 首个采用Omega 工艺的乙二醇生产装置[J]. 现代化工,2
009,
Evans,Hess,Matusz, et al. Process for the preparation of alkylene
carbonate and or alkylene glycol: EU,2009140319[P]. 2009 -
11 - 19.
Slapak,Paul M J,Badhuisweg, et al. Process for the recovery of monoethylene
glycol: EU, 2010040773[P]. 2010 - 04 - 15.
Kawabe K,Yokkaichi. Process for simultaneous producing of ethylene
glycol and carbonate ester: US,6380419[P]. 2002 - 04 - 30.
美国专利,到美国专利局下载
首个采用Omega 工艺的乙二醇生产装置[J]. 现代化工,2009,
中国期刊论文,到中国知网、万方、维普下载
Evans,Hess,Matusz, et al. Process for the preparation of alkylene
carbonate and or alkylene glycol: EU,2009140319[P]. 2009 -11 - 19.
欧洲专利,到欧洲专利局下载
Slapak,Paul M J,Badhuisweg, et al. Process for the recovery of monoethylene
glycol: EU, 2010040773[P]. 2010 - 04 - 15.
欧洲专利,到欧洲专利局下载