A membrane and method for the separation of aromatic hydrocarbons from a mixture of various aromatic hydrocarbons or from a mixture of such aromatic hydrocarbons and non-aromatic hydrocarbons
申请人:NEDERLANDSE ORGANISATIE VOOR
TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK
TNO
公开号:EP0760251A1
公开(公告)日:1997-03-05
The invention relates to membranes and to a method for the separation of aromatic hydrocarbons from a mixture of various aromatic hydrocarbons or from a mixture of such aromatic hydrocarbons and non-aromatic hydrocarbons. According to the invention the membrane is formed from aromatic polyesters on the basis of aromatic diacid chlorides in combination with either bisphenol-A-like bisphenols, or a bisphenol which is completely built up of aromatic centres.
Preferably the membrane is formed from aromatic polyesters on the basis of aromatic diacid chlorides such as terephthaloyl chloride, isophthaloyl chloride, 5-t-butylisophthaloyl chloride, or PIDA in combination with bisphenol-A-like bisphenols, such as 4X-BPN, 4X-BPT, 4X-BPI.
本发明涉及从各种芳香烃混合物或从此类芳香烃和非芳香烃混合物中分离芳香烃的膜和方法。根据本发明,膜由芳香族聚酯在芳香族二酸氯化物的基础上与类似双酚 A 的双酚或完全由芳香族中心组成的双酚组合而成。
膜最好是由芳香族聚酯与对苯二甲酰氯、间苯二甲酰氯、5-t-丁基间苯二甲酰氯或 PIDA 等芳香族二酸酰氯以及 4X-BPN、4X-BPT、4X-BPI 等双酚-A 类双酚组合而成。