GB2262709A - Epoxy/polyolefin coating process - Google Patents

Epoxy/polyolefin coating process

Info

Publication number
GB2262709A
GB2262709A GB9302474A GB9302474A GB2262709A GB 2262709 A GB2262709 A GB 2262709A GB 9302474 A GB9302474 A GB 9302474A GB 9302474 A GB9302474 A GB 9302474A GB 2262709 A GB2262709 A GB 2262709A
Authority
GB
United Kingdom
Prior art keywords
polyolefin
coating
pipe
homopolymer
microns
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB9302474A
Other versions
GB2262709B (en
GB9302474D0 (en
Inventor
James John William Cox
Toni Alois Pfaff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DuPont Canada Inc
Valspar Inc
Original Assignee
DuPont Canada Inc
Valspar Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DuPont Canada Inc, Valspar Inc filed Critical DuPont Canada Inc
Publication of GB9302474D0 publication Critical patent/GB9302474D0/en
Publication of GB2262709A publication Critical patent/GB2262709A/en
Application granted granted Critical
Publication of GB2262709B publication Critical patent/GB2262709B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B05D7/148—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using epoxy-polyolefin systems in mono- or multilayers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/10—Coatings characterised by the materials used by rubber or plastics
    • F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

A method of coating metallic pipe is disclosed. The method comprises heating the pipe to a temperature of at least 200 DEG C and applying an epoxy resin composition having a thickness of at least 300 microns to the outer surface of the heated pipe. Before the epoxy resin composition has completely cured, but preferably after it has gelled, a coating of a modified polyolefin is applied in a thickness of up to 500 microns. The modified polyolefin is a homopolymer or copolymer of hydrocarbon alpha-olefins having 2-10 carbon atoms that has been modified by grafting with ethylenically unsaturated organic carboxylic acid or anhydride. An outer coating of a polyolefin is then applied in a thickness of at least 300 microns, the polyolefin being a homopolymer or copolymer of hydrocarbon alpha-olefins having 2-10 carbon atoms and preferably a homopolymer of ethylene or propylene, or a copolymer of ethylene and a C3-C10 hydrocarbon alpha-olefin. The resultant coating is resistant to impact damage and cathodic disbondment. The coated pipe may be used in buried pipelines in the petroleum industry.
GB9302474A 1990-08-20 1993-02-09 Epoxy/polyolefin coating process Expired - Fee Related GB2262709B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909018236A GB9018236D0 (en) 1990-08-20 1990-08-20 Epoxy/polyolefin coating process
PCT/CA1991/000293 WO1992003234A1 (en) 1990-08-20 1991-08-16 Epoxy/polyolefin coating process

Publications (3)

Publication Number Publication Date
GB9302474D0 GB9302474D0 (en) 1993-04-21
GB2262709A true GB2262709A (en) 1993-06-30
GB2262709B GB2262709B (en) 1994-03-02

Family

ID=10680937

Family Applications (2)

Application Number Title Priority Date Filing Date
GB909018236A Pending GB9018236D0 (en) 1990-08-20 1990-08-20 Epoxy/polyolefin coating process
GB9302474A Expired - Fee Related GB2262709B (en) 1990-08-20 1993-02-09 Epoxy/polyolefin coating process

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB909018236A Pending GB9018236D0 (en) 1990-08-20 1990-08-20 Epoxy/polyolefin coating process

Country Status (4)

Country Link
BR (1) BR9106771A (en)
CA (1) CA2089766C (en)
GB (2) GB9018236D0 (en)
WO (1) WO1992003234A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4310525A1 (en) 1993-03-31 1994-10-06 Basf Lacke & Farben Three-layer metal pipe coating agent and method for external coating of metal pipes in three-layer process
FR2723006B1 (en) * 1994-07-28 1996-09-13 Gts Isopipe Sa PROCESS FOR PRODUCING A PROTECTIVE COATING ON A TUBE AND, PARTICULARLY, ON A PIPELINE TUBE DEVICE AND INSTALLATION FOR IMPLEMENTING SAME
FR2743330A1 (en) * 1996-01-10 1997-07-11 Atochem Elf Sa COATING OF METAL SURFACES
JP3943003B2 (en) * 2002-10-10 2007-07-11 第一高周波工業株式会社 Manufacturing method of multi-layer coated metal curved pipe
JP3979920B2 (en) * 2002-11-05 2007-09-19 第一高周波工業株式会社 Multi-layer coating material for forming anti-corrosion coating and method for forming anti-corrosion coating
DE102006057179A1 (en) 2005-12-03 2007-06-21 Skumtech As Corrosion protection for anchors in the mountains
CA2537348A1 (en) 2006-02-22 2007-08-22 Shawcor Ltd. Coating method for pipe having weld bead
CA2632802A1 (en) * 2008-05-30 2009-11-30 Shawcor Ltd. Coating compositions and processes for making the same
IT1403637B1 (en) * 2011-01-20 2013-10-31 Saipem Spa METHOD OF JUNCTION OF TUBE CUTTINGS TO CREATE PIPES FOR HYDROCARBONS, IN PARTICULAR SUBMARINE PIPES
DE102014102621A1 (en) * 2014-02-27 2015-08-27 Doege Beteiligungs Gmbh Large-tube arrangement and method for producing such
KR20170019385A (en) 2014-06-12 2017-02-21 다우 글로벌 테크놀로지스 엘엘씨 Powder coatings
CA2985390C (en) 2015-05-22 2022-11-29 Solvay Specialty Polymers Italy S.P.A. Multilayer assembly
JP7245395B2 (en) * 2020-07-07 2023-03-23 第一高周波工業株式会社 Method for manufacturing three-layer coated metal pipe

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0366168A1 (en) * 1988-10-03 1990-05-02 Dow Benelux N.V. Process for field coating pipe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0366168A1 (en) * 1988-10-03 1990-05-02 Dow Benelux N.V. Process for field coating pipe

Also Published As

Publication number Publication date
CA2089766A1 (en) 1992-02-21
GB9018236D0 (en) 1990-10-03
WO1992003234A1 (en) 1992-03-05
BR9106771A (en) 1993-06-29
GB2262709B (en) 1994-03-02
GB9302474D0 (en) 1993-04-21
CA2089766C (en) 1999-03-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19990816