Multilayer tubular structure having better resistance to extraction in biofuel and use thereof
US10914408B2 · kind B2 · utility
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13References
28Claims
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Key dates
| Filing date | Dec 13, 2019 |
| Grant date | Feb 9, 2021 |
| Priority date | — |
| Expiry date | Dec 13, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1393
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Provided is a method of determining whether a multilayer tubular structure (MLT) satisfies an extractables test by filling the multilayer tubular structure MLT with an alcohol-containing petrol of FAM B type to obtain a filled MLT and measuring the amount of extractable material. The MLT satisfies the extractables test when the residue of the filtrate is less than or equal to 6 g/m2 of the inner surface area of the MLT.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.