Method for measuring a gel-point temperature
US4971451A · kind A · utility
10Cited by
10References
4Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 18, 1989 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Aug 18, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A heat-generating element and a fluid temperature measuring element are immersed in a molten or gelled fluid sample to measure continuously both temperature .SIGMA.w of the said heat-generating element and fluid temperature .THETA..infin. during the cooling or heating of the fluid sample at one or several constant cooling or heating rates. An abrupt change in .THETA.w-.THETA..infin. value is detected to obtain the practical gel-point temperature of a characteristic gel-point temperature, which is defined as the extrapolated gel-point temperature at a cooling or heating rate of zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.