Title:
フルオロポリマーパイプ
Document Type and Number:
Japanese Patent JP6301308
Kind Code:
B2
Abstract:
The present invention pertains to a pipe being an unbonded flexible riser and comprising at least one layer at least comprising, preferably consisting essentially of (or being made of), a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below:
CF 2 =CF-O-R f (I)
wherein R f is a linear or branched C 3 -C 5 perfluorinated alkyl group or a linear or branched C 3 -C 12 perfluorinated oxyalkyl group comprising one or more ether oxygen atoms,
said TFE copolymer having a melt flow index comprised between 0.5 and 6.0 g/10 min, as measured according to ASTM D1238 at 372°C under a load of 5 Kg [polymer (F)]. The invention also pertains to use of said pipe in downhole operations including drilling operations.
Inventors:
Coryanna, Pascua
Besana, Jean Battista
Marenda, Marco
Messina, Niccio
Besana, Jean Battista
Marenda, Marco
Messina, Niccio
Application Number:
JP2015502267A
Publication Date:
March 28, 2018
Filing Date:
March 25, 2013
Export Citation:
Assignee:
Solvay Specialty Polymers Italy S.P.A.
Technip france
Technip france
International Classes:
B32B1/08; C08F214/26; B32B15/082; C08F216/14; E21B17/01; F16L9/12
Domestic Patent References:
| JP7070397A | ||||
| JP7292200A | ||||
| JP2003519260A | ||||
| JP2003520863A | ||||
| JP2001286930A |
Foreign References:
| WO2012012289A1 | ||||
| WO2010110129A1 |
Attorney, Agent or Firm:
Sonoda/Kobayashi Patent Business Corporation