Global Patent Index - EP 1242542 A2

EP 1242542 A2 2002-09-25 - METAL SURFACES COATED WITH FLUORINATED POLYMERS

Title (en)

METAL SURFACES COATED WITH FLUORINATED POLYMERS

Title (de)

MIT FLUORPOLYMEREN BESCHICHTETE METALLOBERFLÄCHEN

Title (fr)

SURFACES METALLIQUES REVETUES DE POLYMERES FLUORES

Publication

EP 1242542 A2 (FR)

Application

EP 01954100 A

Priority

  • FR 0102296 W
  • FR 0009474 A

Abstract (en)

[origin: WO0206406A2] The invention concerns a coated metal surface comprising successively: an epoxy primer coating (1) arranged against the metal, a binder coating (2) comprising 98 to 50 parts by weight of at least a fluorinated polymer L3 for respectively 2 to 5 parts of at least a polymer selected among acrylic polymers L1 and polymers L2 which are fluorinated polymers chemically modified by partial dehydrofluorination followed by oxidation, a fluorinated polymer coating (3). In a first embodiment the coating does not include coating (3). However, it is recommended that layer (2) which becomes the outer coating should be thicker than in the inventive structure. In a second embodiment, the coating does not include the primer coating (1), the binder coating should necessarily contain polymer L2 and the surface should necessarily be the outer surface of tubes. In a third embodiment, the coating does not include coating (2) and coating (1) comprises a mixture of epoxy primer and of polymer L2. The invention concerns more particularly the coating of the outer surfaces of tubes. Said tubes are useful for operating in offshore hot oil wells, since the tubes transporting the hot oil should be able to resist seawater corrosion.

IPC 1-7 (main, further and additional classification)

C09D 5/08; B05D 1/38; B05D 7/14

IPC 8 full level (invention and additional information)

B05D 5/08 (2006.01); B05D 7/00 (2006.01)

CPC (invention and additional information)

B05D 5/083 (2013.01); B05D 7/58 (2013.01); Y10T 428/12007 (2013.01); Y10T 428/31522 (2015.04); Y10T 428/31529 (2015.04); Y10T 428/3154 (2015.04)

Citation (search report)

See references of WO 0206406A3

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family

WO 0206406 A2 20020124; WO 0206406 A3 20020523; AT 256718 T 20040115; AU 7645101 A 20020130; BR 0106980 A 20020514; CA 2385399 A1 20020124; DE 60101547 D1 20040129; DE 60101547 T2 20040923; DK 1242542 T3 20040413; EP 1242542 A2 20020925; EP 1242542 B1 20031217; FR 2811999 A1 20020125; FR 2811999 B1 20021213; NO 20021175 A 20020308; NO 20021175 D0 20020308; TR 200400532 T4 20040421; US 2003087100 A1 20030508; US 6773815 B2 20040810