Automatic sampling and dilution apparatus for use in a polymer analysis system
US8322199B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2007 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Sep 27, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/0218
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides an automatic sampling and dilution apparatus for use in a polymer analysis system. The apparatus comprises (a) a primary mixing chamber; (b) a primary pump capable of continuously withdrawing a variable viscosity liquid from a reactor at a selectable, fixed withdrawal rate over a varying viscosity range of about 50 to about 5,000,000 centipoise (cP) for continuously conveying the variable viscosity polymer-containing liquid into the primary mixing chamber; (c) a first dilution pump for continuously delivering a first dilution solvent into the primary mixing chamber at a selectable, fixed flow rate to mix with the variable viscosity liquid in the mixing chamber and thereby form a diluted polymer-containing liquid therein; and (d) a secondary pump for continuously conveying the diluted polymer-containing liquid into a flow-through detector. A polymer analysis system utilizing the automatic sampling and dilution apparatus is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.