The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 1998
Filed:
Jun. 20, 1997
Applicant:
Inventor:
Jay Janzen, Bartlesville, OK (US);
Assignee:
Phillips Petroleum Company, Bartlesville, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 5401 ;
Abstract
A process to obtain the shear storage modulus G'(.omega.) and/or the shear loss modulus G'(.omega.) of a polymer is provided. This process comprises: (a) producing a viscosity data set by measuring the viscosity of said polymer at various shear rates, while said polymer is in a melted state; (b) producing a parameter data set that comprises values for .eta..sub.0, .tau..sub..eta. and .alpha. by analyzing said viscosity data set; and (c) obtaining said shear storage modulus G'(.omega.) and the shear loss modulus G'(.omega.) by using said parameter data set.