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JILIN JINZHENG MACROMOLECULE MATERIALS R&D CO., LTD
| JILIN JINZHENG MACROMOLECULE MATERIALS R&D CO., LTD Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20110218315 | PROCESS FOR PREPARING A POLYETHER ETHER KETONE - A process for preparing a polyether ether ketone. Sodium carbonate is used alone as the condensation agent, and 4,4′-difluorodibenzophenone, p-benzenediol and biphenyldiol are subjected to polymerizing. After the corresponding prepolymer is obtained, the reaction temperature is elevated and p-benzenediol is further added as a chain extender to react for a period of time to produce high-viscosity polyether ether ketone. | 09-08-2011 |