Multidimensional chromatographic system

US5240604A · kind A · utility

Assignee

• THE DOW CHEMICAL COMPANY · US

Inventors

• Hernan J. Cortes · Midland, US
• Curtis D. Pfeiffer · Midland, US
• Steven J. Martin · Shoreview, US
• Charles G. Smith · Kalamazoo, US
• Gary L. Jewett · Midland, US

Key dates

• Filing date: Nov 25, 1992
• Grant date: Aug 31, 1993
• Expiry date: Nov 25, 2012

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2030/8405
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An on-line multidimensional system which includes a liquid chromatograph having an on-line connection to a pyrolysis probe, which in turn has on-line connection to a gas chromatograph. Preferred applications use a size-exclusion chromatograph coupled to a pyrolysis probe coupled to a gas chromatograph to simultaneously produce composition as a function of molecular weight/size information for polymeric materials.