High throughput property testing of olefin copolymers using rheological determinations
US7427506B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2004 |
| Grant date | Sep 23, 2008 |
| Priority date | — |
| Expiry date | Mar 11, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/25
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A high throughput method to determine an amount of a comonomer in a copolymer sample of a copolymer system comprises the steps of providing a plurality of copolymer samples; creating an array of the copolymer samples; measuring a sample complex modulus of each of the copolymer samples at a comparison phase angle; and determining the amount of a comonomer in the copolymer sample by comparing the sample complex modulus to a calibration curve, wherein the calibration curve relates a concentration of the comonomer in the copolymer sample to a complex moduli of the copolymer sample determined at the comparison phase angle. A method of determining the amount of a comonomer in both a single copolymer sample, and in a high throughput scheme using the crossover modulus is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.