Title:
POLYUREA MEMBRANE AND ITS USE FOR SEPARATION OF AROMATIC COMPOUND AND NON-AROMATIC COMPOUND
Document Type and Number:
Japanese Patent JPH01164402
Kind Code:
A
Abstract:
PURPOSE: To selectively permeate and separate an arom. hydrocarbon from a mixture composed of the arom. hydrocarbon and non-arom. hydrocarbon by using an arom. nonporous polyurea membrane.
CONSTITUTION: A polymer of poly[methylene bis(4-phenylurea)] is produced by adding a dimenthylformamide soln. of 4,4'-diisocyanatodiphenylmethane to a soln. prepd. by dissolving, for example, 4,4'-diaminodiphenylmethane into dimethylformamine and effecting reaction. This polymer soln. is cast onto a glass plate and is dried to obtain the arom. polyurea membrane. This membrane is usable as a membrane for sepn. of the arom. compd. and a satd. compd. in pervaporation or perstraction.
Inventors:
ROBAATO CHIYAARUZU SHIYUTSUKAA
Application Number:
JP25923888A
Publication Date:
June 28, 1989
Filing Date:
October 14, 1988
Export Citation:
Assignee:
EXXON RESEARCH ENGINEERING CO
International Classes:
B01D61/36; B01D71/54; C07B31/00; C07B63/00; C07C1/00; C07C9/00; C07C15/00; C07C7/144; C07C67/00; C08G18/28; C08G18/32; C08G18/38; C10G31/11; D01F6/72; (IPC1-7): B01D13/00; B01D13/04; C07B63/00; C07C7/144; C07C9/00; C07C15/00; D01F6/72
Attorney, Agent or Firm:
Minoru Nakamura (8 outside)
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