| Record no |
201102228686 |
| Activity status |
Dead or Administration by others |
| Working Title |
PROCESS FOR THE PREPARATION OF POLYURETHANE SPHERICAL PARTICLE |
| Working Inventors |
LALGUDI SRINIVASAN RAMANATHAN;SWAMINATHAN SIVARAM; |
| Contributing institutions |
NCL |
| Administered by |
CSIR |
| Ownership |
|
| Categories > Subjects |
Polymer sciences and engineering |
| Categories > Portfolio |
Polymerization/Polymer catalysis |
| Disclosure number |
|
| NCL No |
1997-NCL-0139 |
| CSIR No |
1997-NF-0377
|
| Priority date |
06-12-1998 |
| Country |
US |
| Application number |
09/143240 |
| Provisional filing date |
|
| Complete filing date |
08-28-1998 |
| Publication status |
Yes |
| Publication date |
|
| Publication no |
|
| Granted number |
6123988 |
| Granted date |
09-26-2000 |
| Final title |
PROCESS FOR THE PREPARATION OF POLYURETHANE SPHERICAL PARTICLE |
| Final Inventors |
LALGUDI SRINIVASAN RAMANATHAN;SWAMINATHAN SIVARAM; |
| Abstract |
This invention relates to the process for the preparation of polyurethane with controlled particle size and shape. More particularly it relates to the production of polyurethane microspheres from a diol and diisocyanate by dispersion polymerization in presence of a steric stabilizer and a catalyst in an organic solvent at a controlled temperature and finally separating the spherical polyurethane particles from the reaction mixture by conventional means. |
| Case status |
Granted + Expired |
| Licensing status |
|
| Licensing case no |
|
| Client name |
|
| Lead inventors |
|
| Categories > Industry > Primary |
Polymers and Commodity Plastics |
| Categories > Industry > other |
|