|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B01D-053/22 B01D-071/64 B01D-071/00 B01D-067/00|
|미국특허분류(USC)||095/045; 095/050; 095/051; 095/054; 095/055; 096/004; 096/008; 096/010; 096/013; 096/014; 210/640; 210/500.39; 055/DIG.5|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 6 인용 특허 : 24|
This abstract discusses membranes needed to separate fluids for the production of oxygen-enriched air, nitrogen-enriched-air, for the separation of carbon dioxide from hydrocarbons, and the separation of hydrogen from various petrochemical and oil refining streams. Membranes are needed that provide a resistance to interaction with process components or contaminants, provide the mechanical strength required to withstand high membrane differential pressures and high process temperatures, and exhibit sufficient maximum strain such that membranes are not bri...
What is claimed is: 1. A membrane for fluid separation prepared by a process comprising the steps of: a) providing a polyimide polymer comprising a plurality of first repeating units of a formula (I), wherein said formula (I) is: in which R1 of said formula (I) is a moiety having a composition selected from the group consisting of a formula (A), a formula (B), a formula (C), and mixtures thereof, wherein said formula (A), said formula (B), and said formula (C) are: and in which R2 of said formula (I) is a moiety having a composition selected from...