Process for lining metal pipelines
US9371943B2 · kind B2 · utility
0Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 2012 |
| Grant date | Jun 21, 2016 |
| Priority date | — |
| Expiry date | May 25, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L58/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A process for lining a metal pipeline, which process generally utilizes thermoplastic fluoropolymer pipe liner Also, a pipeline system that includes at least two coaxial pipes, an outer metal pipe and inner thermoplastic fluoropolymer pipe. The thermoplastic fluoropolymer pipe/pipe liner is made from a composition that generally includes from 10% to 60% by weight of at least one vinylidene fluoride (VDF) homopolymer, from 40% to 90% by weight of at least one VDF copolymer comprising from 2% to 15% by moles of recurring units derived from at least one other fluorinated comonomer (F), and optionally at least one plasticizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.