Flexible pipe
US9040136B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 2008 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | May 11, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1393
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to a flexible pipe comprising at least one polymer layer, and at least one armoring layer unbounded to said polymer layer, wherein at least one polymer layer is a cationic clay containing polymer layer of a polymer material comprising a polymer matrix and from about 0.1 to about 5% by weight of at least one cationic clay silicate.Preferred cationic clay silicates comprise kaolinite; smectite; Illite; chlorite; and synthetic cationic clays. The cationic clay silicate may e.g. be an organo-cationic clay.The cationic clay silicate may preferably be exfoliated and/or intercalated in the polymer matrix.The polymer layer may preferably comprise an inner liner, a thermally insulating layer, an anti-wear layer and/or an outer sheath or a sub-layer thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.