| Record no |
2011052043625 |
| Activity status |
Dead or Administration by others |
| Working Title |
METHOD OF PREPARING POLYCARBONATES BY SOLID STATE POLYMERIZATION |
| Working Inventors |
SWAMINATHAN SIVARAM;GODAVARTHI SATYANARYANA VARADARAJAN; NISKAYUNA, N.Y;JOSEPH ANTHONY KING JR.,; MIDLOTHIAN VA; |
| Contributing institutions |
NCL |
| Administered by |
|
| Ownership |
|
| Categories > Subjects |
Polymer sciences and engineering |
| Categories > Portfolio |
Polymerization/Polymer catalysis |
| Disclosure number |
|
| NCL No |
1997-NCL-0144 |
| CSIR No |
|
| Priority date |
12-08-1997 |
| Country |
US |
| Application number |
08/986448 |
| Provisional filing date |
|
| Complete filing date |
12-08-1997 |
| Publication status |
Yes |
| Publication date |
05-18-1999 |
| Publication no |
US5905135 A |
| Granted number |
5905135 |
| Granted date |
05-18-1999 |
| Final title |
METHOD OF PREPARING POLYCARBONATES BY SOLID STATE POLYMERIZATION |
| Final Inventors |
SWAMINATHAN SIVARAM;GODAVARTHI SATYANARYANA VARADARAJAN; NISKAYUNA, N.Y;JOSEPH ANTHONY KING JR.,; MIDLOTHIAN VA; |
| Abstract |
Crystallization of precursor polycarbonates prior to solid state polymerization is achieved by contact with a non solvent comprising at least in part a dialkyl carbonate such as dimethyl carbonate. The non solvent can be a mixture typically of dimethyl |
| Case status |
Granted + Expired |
| Licensing status |
Assignment(Project agreement) |
| Licensing case no |
1997-LIC-90 |
| Client name |
GENERAL ELECTRIC CORPORATE RESEAR |
| Lead inventors |
SIVARAM SWAMINATHAN |
| Categories > Industry > Primary |
Polymers and Commodity Plastics |
| Categories > Industry > other |
|