公开(公告)号：US11617989B1

公开(公告)日：2023-04-04

申请号：US17013509

申请日：2020-09-04

Applicant: KING SAUD UNIVERSITY

Inventor： Taieb Aouak ,  Mohamed Ouladsmane ,  Ahmed Yacine Badjah Hadj Ahmed ,  Zeid Abdullah Alothman

IPC: B01D71/70 ,  C07C7/177 ,  B01D61/36 ,  B01D69/14 ,  C07C7/144 ,  B01D5/00 ,  C07C15/04

Abstract: The extraction of benzene from benzene/cyclohexane mixture described herein is a process that removes benzene from a benzene/cyclohexane mixture with high selectivity, resulting in an enriched cyclohexane content in the retentate. The process involves adding an aqueous solution of poloxamer 188 to the benzene/cyclohexane mixture and waiting for the mixture to partition into an organic layer above an aqueous layer. Benzene, being more polar than cyclohexane, is selectively drawn into the aqueous layer. Benzene is then removed from the aqueous layer by pervaporation through a composite PDMS (polydimethylsiloxane)/polystyrene membrane. Cyclohexane is recovered from the retentate by drawing off the organic layer of the retentate by any known method. About 97% of benzene has been removed from a 50-50 wt % mixture by pervaporation in the static mode, and about 99% by pervaporation in the continuous mode.

公开(公告)号：US12269787B1

公开(公告)日：2025-04-08

申请号：US18668526

申请日：2024-05-20

Applicant: KING SAUD UNIVERSITY

Inventor： Taieb Aouak ,  Ahmad Almalki ,  Waseem Sharaf Saeed ,  Wafa Nazal Alharbi ,  Abdel-Basit Al-Odayni

IPC: C07C209/78 ,  C07C209/86

Abstract: A method of making benzalaniline, the method comprising: providing benzaldehyde and aniline; performing a condensation reaction using a solvent; extracting water from the condensation reaction using a pervaporation system, wherein a poly(vinyl alcohol) PVA membrane is in the pervaporation system; and obtaining benzalaniline.

公开(公告)号：US09480749B1

公开(公告)日：2016-11-01

申请号：US14877908

申请日：2015-10-07

Applicant: KING SAUD UNIVERSITY

Inventor： Manal Ahmed Gasmelseed Awad ,  Saba Ameen Al-Adeemy ,  Taieb Aouak ,  Awatif Ahmed Hendi ,  Khalid Mustafa Osman Ortashi ,  Waseem Sharaf Shamsan Saeed

IPC: A61K47/36 ,  A61K31/616 ,  C08B30/10 ,  A61K9/70

CPC classification number: A61K47/36 ,  A61K9/7007 ,  A61K31/616 ,  C08B30/10 ,  C08L3/02

Abstract: A method of synthesizing a nanocomposite film including starch nanofibers includes preparing nanofibers from starch, mixing the starch nanofibers with a drug to form a first mixture, adding water to the mixture to provide an aqueous solution, adding hydrochloric acid (HCl) and glycerol to the aqueous solution to provide a second mixture, maintaining the second mixture in a water bath, and drying the second mixture to form a nanocomposite film including starch nanofibers. The drug can be a drug including carboxylic groups. The drug can be acetyl salicylic acid (AsA). The film can be a nano starch/AsA composite film or nanocomposite film. The nanocomposite film can be used as a drug carrier and, thereby, improve drug delivery.

Abstract translation: 合成包含淀粉纳米纤维的纳米复合膜的方法包括从淀粉制备纳米纤维，将淀粉纳米纤维与药物混合以形成第一混合物，向混合物中加入水以提供水溶液，向其中加入盐酸（HCl）和甘油 水溶液以提供第二混合物，将第二混合物保持在水浴中，并干燥第二混合物以形成包含淀粉纳米纤维的纳米复合膜。 药物可以是包括羧基的药物。 药物可以是乙酰水杨酸（AsA）。 该膜可以是纳米淀粉/ AsA复合膜或纳米复合膜。 纳米复合膜可以用作药物载体，从而改善药物递送。