Highly aromatic polyurea/urethane membranes and their use for the separation of aromatics from non-aromatics
Patent
·
OSTI ID:7086607
This patent describes a dense non-porous polyurea/urethane membrane. It is characterized by possessing a urea index of at least bout 20% but less than 100%, an aromatic carbon content of at least about 15 mole percent, a functional group density of at least about 10 per 1000 grams of polymer and a C{double bond}O/NH ratio of less than about 8.
- Assignee:
- Exxon Research and Engineering Co., Florham Park, NJ
- Patent Number(s):
- US 4914064; A
- Application Number:
- PPN: US 7-108822A
- OSTI ID:
- 7086607
- Resource Relation:
- Patent File Date: 14 Oct 1987
- Country of Publication:
- United States
- Language:
- English
Similar Records
Highly aromatic anisotropic polyurea/urethane membranes and their use for the separation of aromatics from non-aromatics
Permeable membranes for enhanced gas separation
SUPPORTED DENSE CERAMIC MEMBRANES FOR OXYGEN SEPARATION
Patent
·
Tue May 09 00:00:00 EDT 1989
·
OSTI ID:7086607
Permeable membranes for enhanced gas separation
Patent
·
Tue Feb 05 00:00:00 EST 1991
·
OSTI ID:7086607
SUPPORTED DENSE CERAMIC MEMBRANES FOR OXYGEN SEPARATION
Technical Report
·
Mon Jul 01 00:00:00 EDT 2002
·
OSTI ID:7086607