Barrier film with molecular expansion under strain
US9297115B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | Feb 4, 2013 |
| Grant date | Mar 29, 2016 |
| Priority date | — |
| Expiry date | Feb 4, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2329/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for treating a solid substrate coupled to a polyol, wherein said polyol bears free hydroxyl groups, comprising the grafting of at least one fatty acid having an aliphatic chain comprising at least 12 carbon atoms onto said solid substrate coupled to a polyol by esterification of at least one free hydroxyl group of said polyol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.