Process and apparatus for solid phase polymerization of polymers
US5440005A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1994 |
| Grant date | Aug 8, 1995 |
| Priority date | — |
| Expiry date | Jul 8, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/80
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process and apparatus for the solid phase polymerization of polymers wherein cold amorphous polymer is introduced to a crystallizer. Hot heat transfer liquid is employed in the crystallizer for heating the polymer through indirect heat exchange to crystallize the polymer. The crystallized polymer is discharged to a reactor for solid phase polymerization, and then passed from the reactor to a cooler. Cold heat transfer liquid is employed in the cooler to cool the polymer through indirect heat exchange. A forced recirculation closed-loop system for the heat-transfer liquid is provided between the crystallizer and the cooler whereby the heat recovery process is achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.