Method for measurement of polymer molecular weight based upon a temperature difference
US5341672A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 22, 1993 |
| Grant date | Aug 30, 1994 |
| Priority date | — |
| Expiry date | Nov 22, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N25/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A molecular weight of a polymer is measured by a process including steps of: heating a polymer portion with a heating device, measuring, with a temperature measuring device, the difference between temperatures of at least two points of the polymer portion at each of which the polymer portion is subjected to a thermally different influence from each other by the heating device, and estimating the molecular weight of the polymer which corresponds to the difference between the temperatures obtained by the measuring step according to a relationship between the temperature difference and the molecular weight of the polymer which relationship has been beforehand obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.