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Method of preparing polymers with low melt viscosity
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 2001 |
| Description | This invention is an improvement in standard polymerizations procedures, i.e., addition-type and step-growth type polymerizations, wherein monomers are reacted to form a growing polymer chain. The improvement includes employing an effective amount of a trifunctional monomer (such as a trifunctional amine anhydride, or phenol) in the polymerization procedure to form a mixture of polymeric materials consisting of branced polymers, star-shaped polymers, and linear polymers. This mixture of polymeric materials has a lower melt temperature and a lower melt viscosity than corresponding linear polymeric materials of equivalent molecular weight. |
| File Size | 1194070 |
| Page Count | 17 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20010055589 |
| Archival Resource Key | ark:/13960/t3vt6kz9v |
| Language | English |
| Publisher Date | 2001-02-20 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Polymerization Viscosity Patents Monomers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
