Polymer recovery process
US5183866A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1989 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Aug 30, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A polymerization process wherein monomers are polymerized in liquid diluent to produce a liquid slurry containing particles of normally solid polymers, periodically opening a product takeoff port to allow a charge of liquid slurry to flow into an elongated confined zone including a flash line heater and then into a flash chamber wherein the lighter components are separated from the polymer. The process is particularly characterized by the fact the elongated confined zone is constructed such that the flow time of the charge of slurry in the flash line heater is equal to at least about 25 percent of the time between the time of the closing of the settling valve and the next opening of the settling valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.