Patent · US Expired

Method and apparatus for rheometry, and its application to control of polymer manufacture

US6840092B2 · kind B2 · utility

8Cited by

28References

27Claims

0Family size

Assignee

Borealis Technology Oy · FI

Inventors

Svein Eggen · Langangen, NO
Petter Asrud · Porsgrunn, NO

Key dates

Filing date	Jan 31, 2001
Grant date	Jan 11, 2005
Priority date	—
Expiry date	Jan 31, 2021

Classification

Technology area (CPC G)Physics
CPC primaryG01N33/44
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method and apparatus for studying the properties of a fluid are provided in which in which a rheometer is used to obtain, for example, value(s) indicative of the shear stress in the fluid to thereby obtain a set of data. The data is then directly compared using, for example, multivariate analysis, with previously obtained data corresponding to a fluid(s) with known rheological properties. The results of this comparison can then be used, for example, to control a manufacturing process.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.