Method and device for testing aldehyde in polyester polymer
US6902700B2 · kind B2 · utility
1Cited by
17References
56Claims
0Family size
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Key dates
| Filing date | Nov 12, 2002 |
| Grant date | Jun 7, 2005 |
| Priority date | — |
| Expiry date | Nov 12, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/202499
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A test strip, methods for making and using the test strip, and a kit are described, which allow for the simple and efficient determination of the acetaldehyde content in a polyester polymer. The strip and methods have application, for example, in the manufacture of polyethylene terephthalate preforms and containers, where existing methods for testing for acetaldehyde are cumbersome and time consuming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.